A method of manufacturing a wave mechanical fastening devices (options)

 

(57) Abstract:

The inventive offers an improved method of manufacturing a tooth for mechanical fasteners (fastening) and the teeth are made this way. The teeth are made by applying a heated temperature-sensitive material on a substrate that is moved with a speed difference relative to the heated material, applied for the formation of teeth. In addition, roaming the substrate can be abstracted from the point of application at an angle. By changing the velocity difference between the substrate and the heated heat-sensitive material during its application and by changing the angle between the substrate and the point of application of the heated heat-sensitive material that may be beneficial to change the characteristics of the fasteners, in particular the shear strength, fastening devices formed from these teeth. 5 C. and 7 C.p. f-crystals. 9 Il., table 4.

The invention relates to a method of manufacturing a fastening device having improved structural characteristics and the characteristics of the binding.

Well known in the art allow for re-securing manual scripsisse, coupled with the substrate, and a suitable receiving surface from which the prong concatenate. Reception surface typically contains one or more layers of filaments or fibers.

The projection of the wave mechanical fastening devices, usually called by means of the clutch, penetrates into the receiving surface and engages with the threads or fibers of the receiving surface. The resulting mechanical mutual influence and physical obstacle to the promotion does not allow to extract a tooth from the receiving surface up until the efforts of the division will not exceed either the strength otder or shear strength fastening device.

Often the specialist in the art wishes to select or to adjust the characteristics of the bonding mechanical fastening device to the desired application of the device. In some applications, the shear strength fastening device becomes important (if not decisive) factor, and the designer may want to adjust the shear strength of the teeth for mechanical fastening to the requirements of such applications.

For example, allowing re-fastening mechanical fastening devices may be used in combination is 46815, 1989 described the diaper with allowing re-fastening fastening (zastavivhsee) device that provides a resistance normally encountered shear stresses and which is convenient and beneficial for the skin of the user. In U.S. patent N 4869724, 1989, described absorbing (hygroscopic) the product is disposable with loops of masking tape and allow re-fastening mechanical fastening devices (clasps), used in combination with each other to ensure re-fastening of the absorbing product of the user and convenient removal of the diaper after it gets dirty.

If allowed repetitive fastening mechanical fastening device used in combination with absorbent disposable product use (such as a diaper), you need some minimum shear strength for maximum reduction detach mechanical fastening devices during wear, which can lead to a weakening of the garment on the user and even to fall. This increases the likelihood of failure to properly absorbent garment functions accepting and understanding: what>/P>If absorbing the product is disposable is a product that is suffering from any incontinence adult, the same image can be profitably used allowing re-fastening mechanical fastening devices such as those disclosed in assigned application N 07/382157 on a U.S. patent (grant N F 40), 1989, However, in contrast to the above requirement fastening devices to provide a certain minimum shear, mechanical fastening device used in combination with the product for an adult suffering from any incontinence may need only a certain maximum shear. This difference stems from the fact that the user may have limited arm strength or dexterity, and if the shear fastening device is too large, the user may not be able to remove easily absorbent garment is disposable for verification in respect of pollution or for a regular shift garment.

In another application it may be desirable to have a mechanical fastening device that allows nestorienne surface, and the direction in which you want fastening grip. This sideslip gives fastening device allowing some adjustment of the relative position of the teeth on the receiving surface by the bonding of two component elements of the device with each other.

Can be important also, and other characteristics (such as design characteristics or configuration) mechanical fastening devices. Specialist in the art can also prepare these characteristics fastening device. For example, the lateral projection (lateral extension) of teeth can be adjusted to the value that makes the teeth suitable for a particular desired receiving surface. Another structural feature, namely the internal angle of the teeth relative to the substrate affects the depth of penetration of the teeth into the receiving surface. Therefore, the designer may wish to adjust this configuration specifications fastening device in accordance with layers and strength filaments or fibers of the receiving surface and the required strength in shear crimping device.

In particular, it was found that there is a certain dependent the STS. In addition, there is a correlation between some parameters of the manufacturing process and the internal angles of the teeth resulting from the implementation of such processes.

The aim of the invention is to provide a method comfortable fit characteristics of fasteners, in particular tensile shear crimping teeth, during manufacture of mechanical fastening devices. The aim of the invention is also a method of regulating the lateral projections of teeth, mechanical fastening devices, and internal angles of the teeth relative to the substrate during manufacture of mechanical fastening devices. In addition, the purpose of the invention is to provide a tooth for mechanical fasteners, which could slide sideways parallel to the plane of the receiving surface after the bonding bonding wave and the receiving surface with each other.

In accordance with the invention offers allow for re-securing of the fastening device in the form of teeth for bonding with a suitable receiving surface and a method of manufacturing such a fastening device. Allow for re-securing of the fastening device with the clutch. The ground prong is connected to the substrate, and the rod is adjacent to the base and acting on it in an outward direction. The clutch means connected with the rod and protrudes laterally beyond the periphery of the rod.

The crimping device can be constructed in accordance with the method, including the availability of temperature-sensitive material and heating it to the melting point. Provide a means for applying individual portions of the heated heat-sensitive material on a substrate and the substrate, which can be connected to the heated heat-sensitive material.

The substrate is moved in the first direction at a first speed relative to the application tools. Individual portions of the heat-sensitive material is applied in a second direction to move the substrate. Backing away from the application tools at an obtuse angle formed between the first and second directions.

In accordance with another variant of the method of making a mechanical fastening device increases the shear strength of the teeth for mechanical fasteners. This method involves moving the heated heat-sensitive material and the substrate relative to each drugdealing the difference of speeds between the movable substrate and caused heated heat-sensitive material.

These methods can be profitably exercised when using the printing roller having many cells located along its periphery. In cells injected heated heat-sensitive material. The printing roller rotate around its axis of rotation, and the substrate is moved in the first direction at the first speed, while maintaining its contact with the cells. This ensures the application of the heated heat-sensitive material of the cells to the substrate.

If necessary, next to the print roller can be mounted supporting roller for the formation of the contact zone and the plane of the contact zone. The substrate is moved through this area in contact with the cells of the printing roll. Backing away from the contact zone at a selected acute angle to the plane of the contact zone. The substrate can be pulled through the contact zone with speed, which is essentially not equal to the peripheral speed of the printing roller.

In the method, increasing the shear strength of a mechanical fastening device, the substrate away from the application tools with differential speed or at an obtuse angle. When using the above-mentioned roller construction with the area of contact between the substrate and the plane of the contact zone abrasin device, which can be used for the manufacture of tooth fastening device, a schematic side view of Fig. 3 a graphical representation of the influence of the velocity difference between a floating support and a tool applied on the inner corner of the terminal prong to two different internal angles formed between the substrate and the plane of the contact zone; Fig. 4 a graphical representation of the influence of the internal angle of the rod teeth on the shear strength of the mechanical fastening device for two different internal angles between the substrate and the plane of the contact zone; Fig. 5 a graphical representation of the influence of positive and negative differences of velocity on the shear strength fastening device for two different internal angles between the substrate and the plane of the contact zone; Fig. 6 (a, b) images of the two teeth made in accordance with the invention with the same positive difference in the velocities between the movable substrate and the printing roller for each tooth and with different internal angles between the movable substrate and the plane of the contact zone in the apparatus shown in Fig. 2; Fig. 7 (a,b) images of the two teeth made in accordance with the invention with one and , with different internal angles between the movable belt and the plane of the contact zone in the device, it is shown in Fig. 2; Fig. 8 (a,b) images of the two teeth made in accordance with the invention with the same internal angle between the movable substrate and the plane of the contact zone in the apparatus shown in Fig. 2, for each tooth and with different positive difference in the velocities between the movable substrate and the printing roller; Fig. 9 (a,b) images of the two teeth made in accordance with the invention with the same positive difference in the velocities between the movable substrate and the printing roller for each tooth and with different internal angles between the movable substrate and the plane of the contact zone in the apparatus shown in Fig. 2.

The crimping device 1 in accordance with the invention contains at least one prong 2, as shown in Fig. 1, and preferably a lot of teeth 2. Each prong 2 sets can be connected to the substrate 3 on the specified schema. Each of the teeth 2 has a base 4, a rod 5 and the tool 6 clutch. Reason 4 teeth 2 are in contact and connected with the substrate 3 and is supported near the ends of the rods 5. The rods 5 are from the substrate 3 and reason 4 in the outward direction. The rods 5 are the far end, which is connected with medium spans the x direction and may be similar to the hook tip. Used herein, the term "lateral" means having a component of a vector parallel to the plane of the substrate 3 at the considered primary wave 2. Protrusion means 6 clutch from the periphery of the rod 5 in the lateral direction allows attachment means 6 coupling to a suitable receiving surface (not shown). Tool 6 clutch is connected and preferably adjacent to the far end of the prong 2. It is obvious that the tool 6 clutch can be connected with a tooth 2 in place between the base 4 and the far end of the rod 5.

As shown in Fig. 2, the set of teeth 2 create using any suitable device or method, including methods that give free formed prong 2, as described and claimed below. Used in this description, the term "freely generated" means the design, which is not a design that is extracted from the mould cavity or from the extrusion head in solid form with a certain shape. The teeth 2 is applied to the substrate 3 in the molten, preferably liquid, state and utverjdayut by cooling until then, until they become rigid and preferably solid, having the desired structure and shape, as will be described n the, is such that, which is widely known as gravure printing. When using this method, the flat substrate 3 having opposite surfaces, pass through the zone 7 of the contact between two cylindrical rollers, i.e., as shown in Fig. 2, between the printing roller 8 and the supporting roller 9. Rollers 8 and 9 are parallel to the axis and are in contact with the substrate 3 as it passes through the zone 7 of the contact. One of the rollers, in particular one that is called by the printing roller 8 has many of the deaf (closed at one end) of the cavities (called cells 10) corresponding to the desired system of teeth 2, applied to the substrate 3. The second roller, called the supporting roller 9 provides for the maintenance of the printing roller 8 pressed against the substrate 3 to the printing roller 8 in the desired position, when the substrate 3 passes through the zone 7 of the contact.

Heat-sensitive material, preferably thermoplastic material, which must be formed teeth 2, is supplied from a heated source such as a tray 11. Heat-sensitive material is preferably heated at least to the melting temperature. Heat-sensitive material is introduced into the cell 10 during the rotation of the printing roller 8 € in contact with the substrate 3, and put the heated material on the substrate 3 to the desired schema.

Upon further relative movement between the substrate 3 and the rollers 8 and 9, the teeth 2 are stretched in a direction having a lateral component, parallel to the plane of the substrate 3 with the formation of the rod 5 and the means 6 of the clutch. Finally, from the means 6 of the clutch can be separated using a separating means 12 Nabeul prong 2. However, the separation means 12 may be removed and the tooth may be separated from Nabeul without the use of special separation means 1, if the parameters of manufacturing the fastening device 1 provides the possibility of separating without such special separation means 12. Due to the viscoelastic properties of thermoplastic material, the prong 2 is reduced (contracted) under the action of gravity and shrinkage that takes place during cooling. Then the prong 2 is cooled (and preferably allow to harden) before the formation of solid construction having means 6 clutch adjacent to the terminal 5.

The crimping device 1 is attached to a suitable receiving surface. Used in this description, the term "reception surface to which parikrama open front side with closely spaced holes, suitable for 6 clutch and educated by one or more threads (fibers), or in accordance with another variant of the front side capable of localized elastic deformation, which means 6 clutch may be captured and will not be able to be smoothly ejected. Holes or localized elastic deformation allows the tool 6 clutch to enter the plane of the receiving surface, and the thread (or undeformed material) to the receiving surface located between the holes (or deformed areas) hinder recovery (freeing) the crimping device 1 until, until you want it to do, or until you exceed the strength otder or shear the fastening device 1.

The receiving surface having threads or fibers, referred to as "appropriate" if the openings between the filaments or fibers have a size that allows at least one means 6 clutch to penetrate the plane of the receiving surface, and the threads are sized to hook tool 6 clutch or detain him. The receiving surface, capable and localized deformation, referred to as "appropriate" if the tee, which will resist the separation of the fastening device 1 from the suction surface.

Suitable recipient surfaces are reticulated foams, knitted fabric, non-woven materials and nonwoven materials with loop pile materials, such as the trademark "Velcro" sold by "Velcro", USA, Manchester, new Hampshire. Particularly suitable receiving surfaces are made of non-woven material number 970026 sold F. "Milliken company Spartanburg, South Carolina, and the fabric number 16110 sold F. "Guilford Mills", Greensboro, North Carolina.

When more detailed consideration of the constituent elements of the fastening device 1 and the individual teeth 2 (Fig. 1) it can be noted that the substrate 3 fastening device 1 must be strong enough to prevent rupture and separation in places between the individual teeth 2 of the fastening device 1, must have a surface to which the teeth 2 will be easy to stick, and shall be suitable for connection with a fixed product, when would the consumer. Used herein, the term "connection" refers to the condition when the first element is attached (added) to the second element directly to the e l e C attach (attach) to the second element. It is assumed that the relationship between the first and second elements remains throughout the life of the product. "Substrate" is an open surface to which is attached one or more teeth 2.

The substrate 3 should also be capable of collapsing into a roll, to support the implementation of traditional manufacturing processes, flexible, so it can be bent and thereby impart the desired configuration, and is able to withstand the heat applied to it liquid teeth 2 without melting or harmful influences before such teeth 2 will harden. The substrate 3 should be also of different widths. Suitable substrates 3 are knitted materials, woven materials, nonwoven materials, rubber, vinyl, film in particular, polyolefin) and preferably Kraft paper. Appropriate, as determined, is white Kraft paper having a basic weight (density) of 0.08 kg / m2(50 pounds per 3000 square pounds).

The base 4 prong 2 is a flat part of wave 2, which is attached to the substrate 3 and which is adjacent to the middle end of the rod 5 prong. Used herein, the term "base" refers to the part of the tooth is satalino, you can see the boundary between the substrate 4 and the rod 5 prong 2. It is important that during use, the rod 5 is not separated from the base 4 and the base 4 is not separated from the substrate 3.

Section base 4 should provide sufficient structural integrity (and therefore area) for the required strengths for order and shear fastening device 1, which is based on the density (density) the location of the teeth 2 and the length of the rods 5 separate teeth 2, as well as to ensure proper adhesion to the substrate 3. When you use a longer rod 5 of the base 4 should normally have a large sectional area to provide sufficient adhesion to the substrate 3 and the proper structural integrity.

Tip shape (footprint) of the base 4 on the substrate 3 has no importance, and the imprint may be extended in any direction to provide greater structural integrity and, therefore, greater strength order in that direction. Used herein, the term "footprint" refers to the flat contact area of the base 4 on the substrate 3. The aspect ratio of the print should not be too large, otherwise the tooth 2 may be unstable in the case, when the I aspect ratio less than about 1.5:1, and it is preferable to round the mark.

For this variant is suitable base 4, with the imprint of a round shape with a diameter of about 0.76 to 1.27 mm (0,030-0,050 inch). If you want to get the crimping device 1 having high strength otder or shift in a certain direction, the sectional area of the base 4 can be increased in this direction, the result will be increased strength and structural integrity with respect to an axis perpendicular to this direction. This makes the teeth 2 is more durable in the direction of increasing the base 4.

The rod 5 is adjacent to the base 4 and protrudes outward from the base 4 and the substrate 3. Used herein, the term "core" refers to the portion of the tooth 2, which is located between the base 4 and the tool 6 clutch and adjoins them. Terminal 5 determines a longitudinal distance at which the tool 6 clutch is from the substrate 3. Used herein, the term "longitudinal" refers to something going in a direction having a vector component directed away from the substrate 3, with increase in the direction perpendicular distance to the plane of the substrate 3 is Yu in the direction specified plane of the substrate 3.

With the rod 5 and the base 4 of each tooth 2 is the starting point 13. "Starting point" of the rod 5 is a point, which can be considered the centre of the base 4 and which is usually located within the footprint of the base 4. The starting point 13 are considering a side view of the tooth 2. "Side view" is a view, on the rod 5 and the base 4 in their radial direction, which is also parallel to the plane of the substrate 3. If the crimping device 1 made in accordance with the method described and claimed below, it is preferred (but not required) to look at wave 2 when determining the starting point 13 in the transverse (across a stroke of the substrate) directions relative movement of the substrate 3 through the contact zone 7.

Find the lateral distance between the remote edges of the imprint base 4 for this particular type side and this distance is divided in half, resulting in the midpoint of the base 4 for this type. When dividing in half the footprint of the base 4 for this particular type side a slight discontinuity (such as a bucket or irregularities inherent in the attachment to the substrate) are not taken into account. This point is the starting point 13 of the rod 5.

Specialists in the art it is clear that the maximum lateral projection 14 is the distance to the outer periphery of the rod 5 or the means 6 of the coupling on the opposite side of the base 4. Type of tooth 2 side, in which the lateral projection maximum 14 is a view in profile of such a 2 prong. For experts in the field of technology it is also apparent that in the manufacture of the fastening device 1 is described and claimed below the maximum lateral projection 14 generally parallel to the direction of travel of the substrate (longitudinal direction) and, therefore, view the profile is usually focused in NAPA one type of wave 2 in the profile. For specialists in the art it is obvious that there is another view in profile with opposite (180o) side of the view (the maximum lateral projection 14 will be oriented to the left from the viewer). Any of the two species in the profile is equally well suitable for the processes described below. On the form of wave 2 in the profile are as described above, the starting point 13 of the rod 5. On this view in profile enter the imaginary cutting plane 1-1 (parallel to the plane of the substrate 3) in contact with the periphery of the tooth 2 at the point (part) wave 2, with the greatest perpendicular distance from the plane of the substrate 3. This corresponds to the part of the tooth 2 which has the greatest height. The perpendicular distance from the imaginary cutting plane 1-1 to the surface of the substrate 3, which are connected to the base 4 of teeth 2, is the "height" of the wave 2. The imaginary cutting plane 1-1 then transferred to one quarter of this greatest perpendicular distance closer to the substrate 3 from the point of greatest altitude location, resulting in an imaginary plane 1-1 intersects with the tooth 2 at a height of three quarters of the perpendicular distance from the plane of the substrate 3 to point the General plane 1-1 then use to determine three points on the tooth 2. The first point is the point at which the cutting plane is suppressed with the front edge 15 of the tooth 2, and call it 75% of the front point 16. "The leading edge" is the pinnacle of the periphery of the rod 5, which is longitudinally directed away from the plane of the substrate 3. The second point is after 180orelative to the center of the tooth 2 and is the point where the cutting plane 1-1 intersects the rear edge 17 of the tooth 2, and call this point 75% of the rear point 18. "Trailing edge" is the pinnacle of the periphery of the rod 5, longitudinally directed to the substrate 3 and located opposite from the front edge 15 of the side. A straight line connecting these two points is in the cutting plane 1-1, and, dividing it in half to find the middle point 19 of the imaginary cutting plane 1-1. This is followed by a straight line connecting the middle point 19 of the imaginary cutting plane 1-1 with the starting point 13 of the rod in the base 4. The internal angle a that this line forms with respect to a plane of the substrate 3, is the angle a of the rod 5.

In other words, the angle a which the rod 5 forms relative to the plane of the substrate 3, is an addition to the 90ocorner most remote from the perpendicular formed by the line (on any side), sedyawati substrate 3, if this line to look in any radial rod 5 (and, in particular, the starting point 13) direction, which is parallel to the plane of the substrate 3 and orthogonal to the perpendicular, is the angle a of the rod 5. It is clear that if you look at the wave 2 approximately in the direction of travel of the substrate (or approximately 180ofrom it), the visible angle a of the rod 5 will be approximately 90o. However, as described above, the angle a, which must be measured is the angle that deviates farthest from the perpendicular, and, therefore, this is the angle a, defined in the case when the wave 2 look in profile, usually approximately in the transverse direction (the direction of progress across the substrate).

The angle a of the rod 5 may be direct to the plane of the substrate 3, or preferably sharp to provide the required strength in a particular direction, when the direction parallel to the maximum lateral projection 14. However, the larger the deflection angle a of the rod 5 from the perpendicular, the more specific the shear strength in the lateral direction. For the described variant of the well-operating rod 5 is a rod with angle a being between about 30 and 70oand predpochtite terzani is not perpendicular oriented relative to the plane of the substrate 3 (regardless of the lateral orientation).

The diameter of the thickening of the 20 funds clutch also measured in the form of a profile. This is the maximum diameter of the thickening near the far end of the clutch means 6 being at right angles to the projected centre line of the rods 5 and means 6 clutch.

The above-mentioned measurement is easily done using a goniometer type 100-00 115 sold F. "RAM-heart, Inc. Mountain Lakes, New Jersey. If you want a more precise measurement, specialists in the art will understand that the definition of the species in the profile, the starting point 13, the cutting plane 1-1, 75% of the energy points 16, 19 and 18 of the angle a of the rod 5 can be ensured by making pictures of the prongs 2 and measurement this photo with conversion scale. For this purpose, is very appropriate, as it was found, scanning electron microscope type 1700 sold F. "Amra, New Bedford. Massachusetts. If necessary, you can use multiple photos to determine the maximum lateral projection 14 and one or the other type in the profile.

Pin 5 should act in the longitudinal direction from the base 4 by a distance sufficient to carry the tool 6 clutch from the substrate 3 to a height that allows the tool 6 clutch l, that it can penetrate into the receiving surface is deeper, allowing the tool 6 clutch coupled with a large number of threads or fibers. On the contrary, relatively shorter rod 5 has the advantage consisting in the fact that you get relatively more durable prong 2, but it also provides a lesser penetration into the receiving surface, and therefore may be unsuitable for foster surfaces (such as wool or loose nonwoven materials), which are less tightly Packed filaments or fibers.

When using knitted wool or receiving surface is suitable relatively shorter rod 5, having a longitudinal length from the substrate 3 to the point (or part of) the greatest height of approximately 0.5 mm (0.020 inch), and preferably at least about 0.7 mm (0,028 inches). When using the receiving surface of the high-speed material having a thickness of more than about 0.9 mm (0.035 inch), the more appropriate is a relatively long rod 5, having a greater longitudinal dimension equal to at least 1.2 mm (0,047 inch), and preferably at least about 2.0 mm (0.079 inch). With increasing DG can be increased, the thickness (density) of the teeth 2 of the fastening device 1.

As described above, the longitudinal length of the rod 5 determines a longitudinal distance from the substrate 3 to the means 6 of the clutch. "Longitudinal length" is the smallest perpendicular distance from the plane of the substrate 3 to the periphery of the tool 6 clutch. For the 6 clutch having a constant geometry, the longitudinal distance between the means of the 6 clutch and the substrate 3 increases with increasing longitudinal length of the rod 5. The longitudinal distance at least twice the diameter of the filaments or fibers, and preferably about 10 times greater than the diameter of these fibers or filaments of the receiving surface provides a good grip pin means 6 fastening device 1 with filaments or fibers and hold their grip. For the described variant of a well-functioning tooth 1 is prong having a longitudinal length from about 0.2 mm to about 0.8 mm (0,008-0.03 inch).

The shape of the section of the rod 5 is not significant. Therefore, the rod 5 may be of any required cross-section corresponding to the above-mentioned parameters related to the cross-section of the base 4. "Section" is a flat platform of any part of the tooth 2, located perpendicularly to the terminal 5 or 6 screenium in longitudinal and lateral directions to the far end of the rod 5 and the tool 6 clutch teeth 2. This design provides a corresponding reduction of the moment of inertia of the rod 5 and the means 6 of the clutch, resulting in a greater approximation of the voltage wave 2 to a constant at the position of the efforts of the division to the fastening device 1 and thereby reduces the number of unnecessary materials in wave 2.

To provide the desired geometry in a wide range of sizes of teeth 2 can be used the same ratio of the areas of the cross section, so that the teeth 2 were comparable. One of the ratios, which regulates the overall narrowing of the prong 2 is the ratio of the sectional area of the base 4 to the cross-sectional area of the tooth 2 in the place of the maximum height (rise) of the tooth 2. As indicated above, the phrase "maximum height" refers to the point (or part) of the rod 5 or the means 6 of the clutch, which is the greatest perpendicular distance from the plane of the substrate 3. Usually work well teeth 2, with the ratio of the sectional area of the base 11 and the sectional area of the largest height in the range of from about 4:1 to 9:1.

It was found that suitable for the described scenario is a round rod 5, tapering from the diameter of the base 4, which, as is located in the range of about from 0.41 mm to 0.51 mm (0,016-0.020 inch). In particular a circular cross section with a diameter of about 0.46 mm (0,018 inches) in place of the maximum height gives the cross-sectional area in the place of the maximum height of approximately 0.17 mm2(0,0003 inches squared). The round cross section of the base 4 with a diameter of approximately 1.0 mm (0,040 inches) gives the cross-sectional area of the base 4 is approximately 0.81 mm2(0,0013 inches squared). This design results in a ratio of the sectional area of the base 4 and the sectional area of the largest height of about 5:1 and in the above range.

Tool 6 clutch is connected with the rod 5 and preferably adjacent to the far end of the rod 5. Tool 6 clutch is radially outward from the periphery of the rod 5, and may additionally have a vector component which acts in the longitudinal direction, i.e., oriented in the direction of the substrate 3 or from it. Used in this description, the term "means of adhesion" refers to any side to the periphery of the rod 5 tabs (other than minor irregularities on the periphery of the rod 5, which resists separation from the receiving surface. The term "periphery" means the outer surface of the tooth 2. The term "radial" means articate base 4.

In particular, a lateral protrusion has a vector component parallel to the plane of the substrate 3 and facing in the direction of this plane. It should be understood that the tool 6 clutch and the rod 5 can have both lateral and longitudinal vector components. No matter, could clearly defined boundaries the far end of the rod 5 and noticeable whether the interface between the rod 5 and the tool 6 clutch. It is only necessary to longitudinally oriented surface of the periphery of the rod 5 is interrupted so that the tool 6 clutch had a surface with a vector component parallel to the plane of the substrate 3 and drawn to this plane.

Tool 6 clutch can have a greater lateral projection than the rod 5, or Vice versa, when required. As shown in the figures, the tool 6 clutch is preferably arcuate and may have incoming curve. If the tool 6 clutch has incoming curve, it has a part coming in the longitudinal direction of the substrate 3 at the base 4 or the place assigned sideways from the base 4. This part is directed sideways to the terminal 5, but to direct it radially towards the starting point 13 is not necessary.

Tool 6 clutch each prong 2 iscli requires a relatively unidirectional prevailing characteristics of the fastening device 1, as well as the strength otder and shear strength, or may be randomly oriented to provide isotropic characteristics in the lateral direction. Means 6 of the clutch can be a hook-like edges that protrude from one side of the rod 5, forming a convex contour, and penetrate into the hole of the receiving surface, caplease with threads or fibers of the receiving surface on the inner radius of curvature means 21 6 clutch. The coupling between the tool 6 and clutch threads or fibers of the receiving surface prevents release fastening device 1 from the suction surface to until will not be exceeded strength otder or shear strength fastening device 1. Tool 6 coupling must not protrude radially too far in the lateral direction, otherwise it will not be able to penetrate into the hole of the receiving surface. The tools section 6 of the clutch must be of the sizes, providing a penetration means coupling holes in the receiving surface.

The cross-sectional area and geometry tools 6 clutch is not decisive until the tool 6 clutch has structural integrity, providing rises the Commissioner of the device 1, having a set of teeth 2 of a given density. For the variant described here is appropriate is made in the form of hook the edge of the tool 6 clutch having a maximum lateral projection 14 from the center of the base 4 to the far side about the periphery from 0.79 mm to 1.4 mm (0.03-0.06 inch).

When used for the crimping device 1 sets of teeth 2 can be selected from any of the layout and density of teeth 2, providing strength otder and shear strength required for a particular application of the fastening device 1. Usually when increasing the density of teeth in proportion to increase in a linear dependence of strength on otder and shear strength. Individual teeth 2 should not be so close to each other to prevent coupling means 6 clutch neighboring teeth 2 with the threads or fibers of the receiving surface. If the prongs 2 are too thick can happen seal or skolachivaniya threads or fibers of the receiving surface, resulting in the openings between the filaments or fibers will be closed. On the contrary, the teeth 2 should not be so far from each other to require excessive area of the substrate 3 to the floor is different to have a lot of teeth 2 rows, so that each prong 2 was located at the same distance from the adjacent teeth 2. In accordance with the method described and claimed below, the alignments are usually oriented in the longitudinal (in the direction of the substrate) and transverse (across a stroke of the substrate) directions. Typically, each of the longitudinal and transverse row of teeth 2 must be located at the same distance from the adjacent longitudinal and transverse rows of teeth 2 to provide a uniform field voltage across the clamping device 1 and the receiving surface of the efforts of the division.

Used herein, the term "step" refers to the distance, measured either in the longitudinal or in the transverse direction between the centers of prints grounds 4 teeth 2 in adjacent rows. Usually a suitable fastening device 1 is a device having a set of teeth 2 in increments ranging from about 1,02 mm to about 5,08 mm (0.04 to 0.20 inch), and preferably in increments of about 2,03 mm (0.08 in). Adjacent transverse rows are preferably offset by about half a step in the transverse direction to double the distance in the longitudinal direction between adjacent transverse rows.

The teeth 2 may be arranged in a matrix on a grid size of 1 cm2the ima is cnom, directions, and preferably from about 5 rows of teeth 2 inch (13 rows per inch) in each direction. This grid will result in the crimping device 1 having from about 4 to 100 teeth 2 per square centimeter (25-625 teeth per square inch) of the substrate 3.

The teeth 2 of the fastening device 1 can be made of any heat-sensitive material that is strong and retains its shape after curing, but not fragile enough to crumble under the application of a fastening device 1 of the efforts of the division. Used in this description, the term "heat-sensitive" refers to the property of the material to gradually move from solid to liquid when the heat input. Destruction believe occurred when the prong 2 broke or can no longer withstand the opposing force in the presence and under the influence of the forces of separation. The material preferably has a modulus of tensile elasticity (measured in accordance with standard D-638 ASTM) from about 24600000 to 31600000 kg m2(35000-45000 pounds per square inch).

Furthermore, the material of the tooth must have a sufficiently low melting temperature to ensure easy handling, and concerning the order to pull the rods 5 and easy to form means 6 of the clutch in accordance with the method of manufacture, described below. It is also important that the teeth 2 were viscoelastic, which will increase the possibility of varying the parameters that affect the design of the prongs 2 and, in particular, the geometry of the tool 6 clutch. Appropriate is a material having a complex viscosity in the range of about from 20 to 100 PA-s at the temperature of application to the substrate 3.

Viscosity can be measured with a mechanical spectrometer model 800 for rheological measurements using dynamic operating mode with a sampling rate of 10 Hz and 10% relative deformation of the material. The preferred geometry of the disc type of the disc, in particular a disk having a radius of about 12.5 mm and a gap of about 1.0 mm between the disc and plate.

In accordance with a preferred variant, the teeth 2 are made of a thermoplastic material. The term "thermoplastic" refers to neseccary polymers thermosensitive material, the current at the input of heat or pressure. For manufacturing the fastening device 1 in accordance with the present invention, in particular in the manner described below, are particularly suitable hot-melt adhesive thermoplastics. Used here, the phrase "thermoplus liquid state. Especially suitable and preferred are polyester and polyamide hot melt adhesives. Used here, the term "polyester" and "polyamide" means a chain having recurring ester and amide elements, respectively.

If you choose a polyester hot-melt adhesive, it is found that works well adhesive having a complex viscosity of about 232 PA-s at about 194oC. If you choose polyamide hot-melt adhesive that has been found suitable adhesive, having a complex viscosity of about 9010 PA-s at about 204oC. it is found that works well polyester hot-melt adhesive sold F."Bostik company, Middleton, mA under No. 7199. It was also found that works well polyamide hot-melt adhesive sold F."Henkel", Kankakee, Illinois under the trademark "Macromelt 6300".

A method of manufacturing

Above the teeth 2 may be manufactured in accordance with the method, including the application of individual portions of the heated heat-sensitive material on a substrate 3, which is moved relative to the selected means for applying the heated heat-sensitive mater is heating it to at least the melting temperature, bringing the heated heat-sensitive material becomes liquid, flowing state.

Ensure the presence of the substrate 3 and move it relative to the means for applying this heated material. Provide a means for applying individual portions of the heated heat-sensitive material. From the application tools to the substrate 3 put individual portions of the heated heat-sensitive material. For specialists in the art it is obvious that you can move the tool to apply individual portions of the heat-sensitive material and the substrate 3 to leave stationary or, preferably, to provide relative movement between the substrate 3 and a means of drawing the substrate 3 is moved, and means applying leave motionless.

During the movement of the substrate 3 and the application of individual portions of the heat-sensitive material which forms the teeth 2 install two directions. The first direction is the direction of movement of the substrate relative to the means for applying heat-sensitive material. The second direction is the direction of application of such material in the floating substrate 3 at the time of application. Between pabespealia the desired properties of strength in shear, below, and the preferred geometry of the teeth 2 formed by the angle b should be preferably blunt. When the obtuse angle b is closer approaching about 100o(larger or smaller angles), you normally receive the fastening device 1 having a relatively high shear strength. It should be understood that the preferred angle of approximately 100othat can be changed by using the cell 10 for applying the heated heat-sensitive material on a substrate 3.

In the process of applying the heated heat-sensitive material on a substrate 3 preferably, when there is a speed difference between the movable substrate 3 and the applied heat-sensitive material. This speed difference is considered "positive" if the speed of the substrate 3 in the first direction greater than the speed of one or another means, such as cell 10, the printing roller 8, which is used for drawing the heated heat-sensitive material at the point of application of such material to the substrate 3. On the contrary, the speed difference is considered "negative" if the speed of a floating substrate 3 is smaller than the speed of the cell 10 for applying heat-sensitive material at the point of application of such m is heated temperature-sensitive material is left stationary, and the substrate 3 is moved, you always receive a positive difference in the velocities. While providing a positive velocity difference viscoelastic rheological properties of heat-sensitive material can provide lateral stretching of the material and the desired characteristics of the fasteners, in particular, the resulting properties relating to the desired strength in shear.

As shown in Fig. 2, the crimping device in accordance with the present invention can be produced using a modified gravure printing process. Gravure printing is well known in the art, as shown in the description of the U.S. patent N 4643130, 1988

As shown in Fig. 2, the substrate 3 may be omitted through the zone 7 of the contact formed between the two adjacent to each other rollers of the printing roller 8 and the supporting roller 9. Rollers 8 and 9 are parallel to the axis of rotation are parallel to the plane of the substrate 3. Each of the rollers 8 and 9 rotate around its axis, so that the rollers 8 and 9 are in zone 7 the same surface and direction. Optionally, the rollers 8 and 9 may also be equal to each other circumferential speed in zone 7 of the contact.

PR is STV external driving force (not shown) or one roller can be brought into rotation by an external driving force, and the other through a friction clutch with the first roller. As it was installed, proper driving force can be created through the AC motor power of about 1500 watts. Due to the rotation of the rollers 8 and 9 to actuate the means for applying the heated heat-sensitive material on a substrate 3 for the formation of teeth 2. Rollers 8 and 9 can be rotated with the same or with different cutting speeds. It is only necessary that both of the roller 8 and 9 are rotated in the same direction in the zone 7 of the contact.

Means the application must be capable of withstanding the temperature of the material of the teeth 2 in the liquid state, to provide a uniform pitch between the teeth 2 in the longitudinal (in the direction of the substrate) and transverse (across a stroke of the substrate) direction and to provide the desired density of the teeth 2 in the above-mentioned set of teeth. In addition, the tool application should be able to give teeth having different diameters of the base 4 and different heights of the rod 5. The printing roller 8, in particular, provides a means for applying a teeth 2 on the substrate 3 in the order described above (or in a different order), in accordance with the proposed method of manufacture.

The phrase "among the 3 portions, relevant individual teeth 2. The term "apply" means to move the material to the teeth of the mass and to dispense such material on the substrate 3 in amounts corresponding to individual teeth 2.

One suitable means for applying the material of the teeth on the substrate 3 is one or more cells 10 in the printing platen 8. Used in this description, the term "cell" refers to any cavity or other part of the printing roller 8 which carries the material to the teeth from the source to the substrate 3 and causes the material to the substrate 3 separate portions.

The cross-section of the cell 10 at the surface of the printing roller 8 conforms to the shape of the imprint base 4 prong 2. The cross section of the cell 10 should be approximately equal to the desired cross section of the base 4. The depth of the cell 10 to some extent determines the longitudinal length of the prong 2, in particular the perpendicular distance from the base 4 to the point (or part of) the greatest height. However, when the depth of the cell 10 is increased to more than about 70% of the diameter of the cell 10, the longitudinal size of the prong 2 remains constant. This is because not all of the liquid material of the tooth is extruded from the cell 10 and is applied to the substrate to be passed in the cell 10 and is moved in the substrate 3.

For this variant is suitable blind cylindrical cell 10, which has a depth of between about 50 and 70% of the diameter. If necessary, the cell 10 may be made somewhat tapering in the shape of a truncated cone in accordance with the requirements of traditional manufacturing methods, such as chemical etching.

When using the cell in the form of a truncated cone inner cone angle of the cell 10 should not be greater than approximately 45oto provide the preferred narrowing of the rod 5 and the above-described ratio between the base and the zone of maximum height. If the cone cell 10 has a larger internal angle can be obtained prong 2, having too much constriction. If the interior angle is too small or the cell 10 has a cylindrical shape, can be obtained rod 5 of the same section, having therefore a zone of a higher voltage. For the described variant suitable prong 2 gives the cell 10, having an internal angle of approximately 45othe diameter at the periphery of the roller approximately from 0.89 to 1.22 mm (0,035-0,048 inches) and a depth in the range of about 0.25 to 0.51 mm (0.01 to 0.02 inch).

The printing roller 8 and the supporting roller 9 must be pressed to each other in C the substrate 3 and provide sufficient friction clutch, ensure that the rotation of the opposite roller, if he does not have an external drive. Supporting roller 9 should be slightly softer and more pliable than the printing roller 8, to provide a resilient supporting material for teeth when applying it to the substrate 3 from the printing roller 8. Appropriate is supporting roller 9 having a rubber coating with a hardness of approximately 40 to 60 when measured by scleroscope And Shor.

The temperature of the printing roller 8 is not strokerelated, however, the printing roller 8 must be heated to prevent solidification of the material of teeth 2 at the time of transfer from the source and deposition on the substrate 3. The required surface temperature of the printing roller 8, close to the temperature of the material at the source. It has been found that a suitable temperature is printing roller 8 approximately 197oC.

It should be understood that it may be necessary cooling roller, if the heat transferred from the material of teeth, has a harmful effect on the substrate 3. If you want a cooling roller, it can be embedded in a supporting roller 9 by means well known to specialists in this field of technology is another polyolefin substrate 3.

The material used for formation of separate teeth 2, you need to keep the source that provides the proper temperature for bonding teeth 2 to the substrate 3. Usually need a temperature slightly above the melting point of the material. It is believed that the material is at the melting point or higher, if it is partly or completely in the liquid state.

If the source material for the teeth to hold too high a temperature, the material will not be sufficiently viscous and can give the tool 6 clutch attached to the teeth 2 on the side near the longitudinal (in the direction of the substrate) direction. If the material temperature is very high, the teeth 2 will flock to a small, somewhat hemispherical puddle, and the tool 6, the clutch will not be formed. On the contrary, if the source temperature is too low, the material for the teeth cannot be transferred from the source to the means of application or subsequently may not be properly transferred from the means 10 is applied to the substrate 3 in the desired order. The source of the material should also inform the material uniform temperature profile in the transverse (along the substrate) direction, nah the ri depletion of material.

A suitable source is tray 11, commensurate with the part of the transverse size of the printing roller 8, which has the cell 10 and is adjacent to them. The tray 11 has closed down the outer side and the ends. The top may be closed, or closed, as desired. The inner side of the tray 11 is open, allowing in it liquid material free to contact and communicate with the circumference of the printing roller 8 and enter the cell 10, or to communicate with any other desired means for applying heat-sensitive material on a substrate 3.

The source is heated externally by a known means (not shown) to maintain the material for teeth in a liquid state and at a proper temperature. The preferred temperature is above the melting temperature but below that at which there is a significant decrease in the viscoelastic properties. If desired, the liquid material in the tray 11 can be mixed or recycling, in order to promote homogeneity and corners of different temperature distribution.

Under the bottom tray 11 is the cutter (blade) 22, which regulates the amount of material adhering to the printing roller 8. The cutter 22 and the tray 11 leave the fixed material, which was not included in the individual cells 10 on the shaft 8, and allows you to recycle this material. This design provides the possibility of applying the material to the teeth of the cell 10 to the substrate 3 in the desired order in accordance with the geometric arrangement of the cells 10 in the periphery of the printing roller 8. As shown in Fig. 2, the cutter 22 is preferably placed in a horizontal plane, in particular at the horizontal top of the printing roller 8, which is located above (in the direction of rotation) zone 7 of the contact.

After application to the substrate 3 teeth 2 can be separated from the printing roller 8 and the means 10 for applying. If necessary, the Department may be implemented as a separate stage of the process by use of a separating means 12 for separating teeth 2 on the tool 6 clutch fastening device 1 and Nabeul. Used herein, the term "Nabeel" refers to any material separate from wave 2 and not part of the fastening device 1. However, depending on the regulation of various parameters such as the angle g between the substrate 3 and the cells 10 of the drawing, the speed difference, the viscosity of the heated heat-sensitive material, the mesh is the natural enemy of the image as a function of movement of the substrate 3 in the direction from the place of application.

In the case of its use separation means 12 should be adjusted for different sizes of teeth 2 and the lateral projection means 14 6 clutch, and also to ensure uniformity throughout the cross over set of teeth. The term "separation medium" refers to a device or composite element, which in the longitudinal direction separates from Nabeul fastening device 1. The term "split" refers to the action of the Department of Nabeul from the crimping device 1 as described above. Separation means 12 should also be clean and should not rust, oxidize, or transferred to the teeth 2 substances causing corrosion and contaminants (such as material Nabeul). Suitable separation means is a wire that is located parallel to the axes of the rollers 8 and 9 and separated from the substrate 3 by a distance slightly greater than the perpendicular distance from the place of greatest height hardened teeth 2 to the substrate 3.

Separation means 12 is preferably heated to prevent the accumulation of molten material to the teeth on the separation means 12, to compensate for the cooling of teeth 2 occurring between momen 6 clutch. Heating the separating means 12 must also ensure a uniform temperature distribution in the transverse (across a stroke of the substrate) direction in order to obtain a set of teeth 2, having the same geometry.

When the temperature of the material for the teeth is increased, this may compensate for the relatively lower temperature of the hot separator device (wire) 12. In addition, when the speed is reduced, the substrate 3 is less frequent cooling of the hot wire 12 during the cutting of each prong 2 and Nabeul that provides increased opportunities for the use at the same temperature of the hot separator device (wire) 12 with relatively low power consumption in watts. It should be understood that increasing the temperature of the hot wire 12 will cause the teeth 2 will have, as a rule, the shorter the rod 5. On the contrary, the length of the rod 5 and the side length of the tool 6, the clutch will increase inversely proportional to the decrease in the temperature of the hot wire 12. To effect the separation of the actual contact separating means 12 is not required. Prong 2 can be separated by means of radiant heat, isogawa is nichrome wire 12 of circular cross section, having a diameter of about 0.51 mm (0.02 inch) and heated to a temperature in the range from about 343 to 416oC. it is Obvious that the above-described hot wire 12 may be replaced by a knife, laser, or other separation means 12.

It is important that separation means 12 is in place that allows for drawing (stretching) before wave 2 will be cut off from Nabeul. If separation means 12 is located too far from the plane of the substrate 3, the material will be below the dividing means 12 without any contact with him, which formed a very long tool 6 clutch, which will not be properly separated from the substrate 3 or the adjacent teeth 2. Conversely, if the separation means 12 is located too close to the plane of the substrate 3, the separation means 12 will truncate the rod 5 and the tool 6 clutch cannot be established.

For the described method of manufacturing a correctly located the separating means in the form of hot wire 12 is separation means, located at a distance of approximately 14 to 22 mm (0.56 to 0.88 inch), preferably about 18 mm to 0.72 inch), from nonpolarised roller 9 in a direction radially outward and approximately from 1.5 to 4.8 mm (0.06-0.75 inches) from the printing roller 8 in the direction radially outward.

During operation, the substrate 3 is moved in the first direction relative to the cells. In particular, the substrate 3 is moved through the zone 7 contact, preferably extending through exhaust (intake) of the platen (not shown). This provides a clean section of the substrate 3 for the continuous coating of the teeth 2 and the drainage areas of the substrate 3, which is applied to the teeth 2. The direction parallel to the main direction of movement of the substrate 3 as it passes through the zone 7 contact, referred to as "longitudinal direction". Longitudinal direction, as shown by the arrow 23 in Fig. 2, perpendicular to the axis of the printing roller 8 and the supporting roller 9. The direction perpendicular to the longitudinal direction and parallel to the plane of the substrate 3, referred to as "transverse direction". The plane of the contact area of this plane with the line that matches the contact zone and tangent to the printing roller 8 and the supporting roller 9.

After application of the material from the cell 10 to the substrate 3 continue the rotation of the rollers 8 and 9 in the direction shown in Fig. 2 by the arrows 23. This is the reason of occurrence of a certain period of relative displacement between the movable substrate 3 and the cells 10 (period) during which (to the al is drawn (stretched) as long until the separation and prong 2 separates from the cell 10 of the printing roller 8. Used herein, the term "extract" means an increase in linear dimension, at least a portion of which (increase) remains constant during the lifetime of the fastening device 1.

As described above, the separation of individual teeth 2 from the printing roller 8 may be a necessary part of the process of forming tools 6 clutch. Being separated, the prong 2 is divided into two parts: the far end and the tool 6 clutch, which remain with the fastening device 1, and Nabeul (not shown), which remains with the printing roller 8 and, if desired, can be used in a repeated cycle. After separation of the teeth 2 from Nabeul fastening device 2 allow to cool before the teeth 2 will come into contact with other objects. After hardening of the teeth 2, the substrate 3 can be wound on the roller for storage.

The substrate 3 may be moved through the zone 7 of the contact in the first direction at a rate of approximately 3-31 m per minute (10-100 feet per minute). The substrate 3 can be routed through an area of 7 contact with a speed that is within the speed by approximately 25% of especiay the speed difference between 25% of the positive difference of speeds of up to 15% negative. Preferred is at least 2 positive difference in the velocities. Therefore, when using the device shown in Fig. 2, the speed of the floating substrate 3 is at least about 2% greater than the peripheral speed of the printing roller 8.

Performance bond (in particular, the shear strength) of the fastening device 1 or a single tooth 2 may also influence the internal angle b formed between the two directions appearing on dynamic stages of this process, and the first direction is the main direction of movement of the substrate 3 and the second direction is a direction of drawing the heated heat-sensitive material in the floating substrate 3. Certain internal angle g has a place when used as a means 10 for applying the heated heat-sensitive material in the floating substrate 3 described above, the device containing the printing roller 8, the supporting roller 9 and zone 7 of the contact. For specialists in the art it is obvious that when using this device for the application of the heated heat-sensitive material on the substrate 3 at the time of application of the internal angle g will be equal to priblizitelino, in which the heated heat-sensitive material is removed from the cell 10 at the periphery of the printing roller 8.

As described above, the substrate 3 can be driven out from the plane of the contact zone 7 of the printing roller 8 at a certain angle g, which is acute relative to the plane of the zone 7 contact and obtuse relative to the direction of application of the heated heat-sensitive material in the floating substrate 3. Usually when reducing the internal angle g between the direction of movement of the substrate after its exit from the zone 7 of the contact and the plane of the zone 7 pins) or, more generally, the internal angle b between the first direction roaming substrate 3 and the second direction causing the heated heat-sensitive material in the floating substrate 3) receive fastening device 1 having a relatively high shear strength, as shown in the accompanying drawings and described in more detail below.

This relationship generally holds regardless of the relative velocity difference between the movable substrate 3 and the cell 10 for applying the heated heat-sensitive material in the floating substrate 3. This dependence is valid for both positive difference is th substrate 3 away at an obtuse angle b relative to the direction of application of the heated heat-sensitive material in the floating substrate in the range of about 100 to 110oand, more specifically, where a floating substrate 3 away from the plane of the zone 7 of the contact under the inner corner of g within the example from 5 to 40o.

As shown in Fig. 3, usually with increasing positive velocity difference decreases internal angle a of the teeth 2 on the substrate 3 and, therefore, the teeth become more oriented to the side and closer to parallelism with the plane of the substrate 3. This dependence is fair and essentially linear for the two selected interior angles g, equal to 15 and 35obetween the plane of the zone 7 of the contact line along which the substrate 3 away from the zone 7 of the contact, and covers the range from negative 11% velocity difference to a positive 16% velocity difference.

As shown in Fig.4, the shear strength of the sample mechanical fastening device 1 measured in grams-force to the sample holding device 1 having an area of approximately 4,84 cm2(of 0.75 square inches). This sample size was chosen because it is large enough to give a representative assessment of the sample, and the typical dimensions used in the above application. The shear strength test above grade material 16 is by stretching the crimping device 1 and the receiving surface, bound to each other, in opposite directions that are parallel to the respective planes of the substrate 3 and the receiving surface. During the measurement, the internal angle of teeth 2 oriented in the same direction in which pulled the substrate 3 through rastaquouere device (shown in Fig. 1 prong 2 is pulled to the right). The method used to determine the resistance of the fastening device 1 to the efforts of the shift, more fully described in the U.S. patent N 4699622, 1987

In Fig. 4 shows that the shear strength fastening device 1 is connected with an internal angle a of inclination of the rods 5 teeth 2 and, consequently, with the difference between the velocities of the dependence shown in Fig. 3. As shown in Fig. 4, it is preferable that the angle a between terminals 5 and the substrate 3 was less than approximately 70o, preferably less than about 65oto provide a shear strength equal to at least about 1000 g 4.8 cm2because you can see that the shear strength decreases rapidly when the rods 5 are more perpendicularly oriented relative to the substrate than about 65-70o. In Fig. 4 also shows that for all the recorded values of the internal angles of a ster 15oand not at an angle more than 35 go.

It is evident from Fig. 4 you can see that is usually required to have an internal angle a between the terminal 5 of the tooth 2 and the substrate 3 less than 70o. In particular, the necessary internal angle a in the range of about 20 to 65o. This dependence is again remains fair to both internal angle g between the plane of the zone 7 of the contact lines, which divert the substrate 3 after leaving the zone 7 of the contact.

In Fig. 5 shows the relationship between the difference of the velocities of the substrate 3 and the tensile shear mechanical fastening device 1, obtained at such a velocity difference. This figure shows both positive and negative velocity difference. However, in Fig. 5 shows that it is desirable positive difference in the velocities of from about 2 to 16%, This dependence is again remains fair to both internal angle g between the plane of the zone 7 of the contact line, which move the substrate 3 away after leaving the zone 7 of the contact.

Another factor that must be considered skilled in the art, is the radius of curvature of the printing roller 8 and its dependence on the difference soon the 8 cable and terminal 5 formed prong 2 away from the substrate 3 at an angle, which near zone 7 contact becomes closer to a straight angle relative to the plane of the zone 7. After hardening, this prong 2 will usually have a relatively larger internal angle a than the prong 2, made under similar conditions, with the exception of the printing roller 8 with a large radius of curvature.

Thus, to avoid reducing the strength of shear in accordance with the dependence shown in Fig. 4, when the radius of curvature of the printing roller 8 is reduced, it is also necessary to reduce the speed difference or internal angle g between the movable substrate 3 and the plane of the zone 7 of the contact, or both. If the radius of curvature of the printing roller 8 to increase or decrease without appropriate compensation by changing the velocity difference or internal angle g, the angle a of the teeth 2 and, consequently, the shear strength fastening device 1 may not provide the shear strength required for this application. In particular, if the speed difference and the internal angle is not consistent with the radius of curvature of the printing roller 8, Nabeul-wave 2 may be focused too close to the perpendicular direction relative to the substrate 3 and after curing inside the capacity in shear, than this is required.

Thus, in order to produce improved fastening device 1 in accordance with the present invention, it is important to provide a device used for manufacturing the fastening device 1, by means of message vector orientation that is not perpendicular (>10ofrom the axis in any direction) to the plane of the substrate 3 at the base 4 prong 2, certain portions of the applied heat-sensitive material. When using the device shown in Fig. 2, two tools for messages not perpendicular to the substrate 3 vector orientation applied to individual portions of thermosensitive material is the above-mentioned speed difference and an acute angle g between the plane 7 of the contact and the movable substrate 3.

There are various options described device and method for manufacturing within the scope of the present invention. If desired, ensuring the presence of a relatively strong substrate 3 and sufficient tension, it is possible to remove the support cushion 9 of the device shown in Fig. 2. Instead, as is well known to experts in the art, the substrate 3 may be printed bow roller 8 by using the and, it is shown in Fig. 2, is absent, and the application of heated temperature-sensitive material of the cells 10 of the printing roller 8 provides the tension of the substrate 3. However, you should understand that if you choose this option designs for devices and means 10 applying the heated heat-sensitive material on the substrate 3, the substrate 3 must have sufficient tensile strength to avoid rupture and to provide the tension necessary for the proper application of the heated heat-sensitive material.

Examples.

Here are four illustrated, non-limiting example of how the various parameters of the manufacturing process it is possible to combine, modify, maintain permanent and used for the manufacture of allow for re-securing of the fastening device 1 having the desired design, geometry, or shear strength. In Fig. 6,a-9,b shows a typical wave 2 for each example, the fastening device 1.

Considering that the first of these options maintain a constant for all four parameters in each of the following examples use the above polyester hot-melt adhesive N 7199 sold F. "Bostick". Some Kraft paper with a thickness of 0.13-0.18 mm (0.005 to 0.007 inch), moved with a constant speed of approximately of 6.31 m/min (20,7 feet per minute).

The device selected for applying the heated heat-sensitive material, similar to that shown in Fig. 2, and has a printing roller 8 with a diameter of about 16 cm (6.3 inches) and the supporting roller 9 with a diameter of approximately 15.2 cm (6.0 inch). The printing roller 8 has many made in the shape of a truncated cone deaf (closed at one end) of the cells 10, each of which has a diameter on the periphery of the printing roller 8 of about 1.0 mm (0,040 inches) and a depth of about 0.46 mm ( 0.018 inches) and is situated in a matrix of about 75 cells per square centimeter (484 cells per square inch).

Each example includes separation means 12, in particular a hot wire with a diameter of 0.76 mm (0,030 inch) and a length of about 61 cm (24 inches). Hot wire 12 have horizontally about 5.1 mm (0.2 inch) from the printing roller 8 and about 22.9 mm (0.9 inch) away from the backing roll 74 for each example. The wire 12 is heated using electrical energy.

Taking into account that the following parameters are changing in all the examples, the electrical energy supplied to the hot wire 12 maintains the efficiency cooling taking place between the periphery of the hot wire 12 and the surfaces of teeth made in accordance with various examples. Change the angle b between the cells 10 of the coating and the substrate 3, to show the influence of two different angles g. In particular, the examples use the angles g between the movable substrate 3 and the plane of the zone 7 of the contact is equal to 15 and 30o. In addition, change the speed difference between the cells 10 of the drawing and move the substrate using the positive and negative velocity difference. For each example, either the difference in the velocities constant support, and the angle g regulate, or Vice versa, so in the same example does not regulate both the parameter.

Example 1. As shown in Fig. 6A,b, prong 2 (Fig. 6,a) are in accordance with the parameters presented in table. 1(A) and wave 2, as shown in Fig. 6,b, receive in accordance with the parameters presented in table. 1(B). Both teeth are made with a positive 2% velocity difference, but changing the internal angle g between the plane of the zone 7 of the contact and the movable substrate 3 with an acute angle 15oat an acute angle 35o. In other respects, the parameters used in the manufacturing process of teeth, poketcasino in Fig. 4 and 5, the prong 2, having an internal angle g, 15ohas a shear strength of almost 35% greater than the shear strength of the tooth 2 (shown in Fig. 6,b), having an internal angle g, 35o. But the prong 2 is shown in Fig. 6,b, almost 25% higher and has a lower lateral projection.

Example 2. In Fig. 7,a and b, shows teeth made in accordance with the parameters presented in table.2, and having a positive 6,6% speed difference, but obtained with different internal angles g between the plane of the zone 7 of the contact and the direction of movement of the substrate 3, is approximately 15 and 35o. Tool 6 clutch teeth 2, as shown in Fig.7,b, has a significant orientation of the entrance back to the starting point 13 of the base 4. However, according to Fig.4 and 5 prong 2 shown in Fig. 7,and has approximately 7% greater shear strength than the prong 2, shown in Fig. 7, b. One of the reasons for increased shear strength of the teeth 2, as shown in Fig. 7, is that the orientation of the input means 6 clutch prevents adhesion of the fastening device 1 with a large number of fibers of the receiving surface and such linked fibers do not have a significant resistance usedin and the same internal angle between the plane of the zone 7 of the contact and the plane of the floating substrate 3. Constant angle g for both teeth 2, as shown in Fig. 8,a and b, is approximately 35o. Prong 2 is shown in Fig. 8,and has a positive speed difference approximately equal to 16% and the tooth shown in Fig. 8,b, identical to the one shown in Fig. 6,b-wave 2, with a positive 2% speed difference. For specialists in the art it is obvious that the tool 6 clutch teeth 2, as shown in Fig. 8,b, has a very large maximum lateral projection 14, almost 71 greater than that of the tooth shown in Fig. 8,b. Prong 2 shown in Fig. 8,and has a greater lateral projection 14 that the tooth 2 can slide sideways parallel to the plane of the substrate 3 being coupled with the receiving surface, provided that this slide coincides with the direction of the tooth profile 2.

In addition, the prong 2, shown in Fig. 8,and has a shear strength that is almost 10% greater than that of the tooth shown in Fig. 8,b. This result corresponds to that shown in Fig. 3-5. When increasing the velocity difference of the internal angle is reduced (as in Fig. 3) and, therefore, increases the shear strength (as in Fig. 4). In addition, as shown in Fig. 5, when increasing the speed difference increases tov 1 and 3 you can see, as the lowest and highest values of strength in shear are presented in example 1 teeth 2 with a positive 2% speed difference. This difference in tensile shear means that at lower positive differences speeds the production process is more sensitive to changes in the internal angle g between the substrate 3 and the plane of the zone 7 of the contact.

Example 4.

As shown in Fig. 9,a,b, the teeth 2, obtained in accordance with the parameters of these figures have every negative 11% difference in the velocities and significantly less strength in shear than the teeth 2 in the previous examples. However, according to Fig. 3 and 5, shown in Fig. 9,and the 2 prong having an inner angle g between the movable substrate 3 and the plane of the zone 7 of the contact is equal to the 15ohas almost 27% greater shear strength than that of the tooth shown in Fig. 9,b, which has an internal angle g between the movable substrate 3 and the plane of the zone 7 of the contact is equal to the 35o.

The results are shown in table. 4.

For specialists in the art it is obvious that can be used by various other modifications and combinations of the above parameters. For example, you can adjust the many differences of speeds and other means for applying the heated heat-sensitive material in the floating substrate 3. All such combinations and modifications are within the scope of the attached claims.

1. A method of manufacturing a wave mechanical fastening device, characterized in that the prong free form, heated at least to the melting temperature of thermosensitive material, then it is served with means for applying to the substrate, which is moved relative to the means for applying, when the sensing material is applied to individual portions is not perpendicular to the substrate.

2. A method of manufacturing a wave mechanical fastening device, characterized in that the prong free form, heated at least to the melting temperature of thermosensitive material, which is served in a cell means for applying, made in the form of the printing roller, printing roller rotate around its axis to the contact of cells with the substrate, which serves at a speed different from the speed of the rotating printing roller, put individual portions of the heat-sensitive material in the floating substrate.

3. The method according to p. 2, characterized in that the substrate serves at speeds from 25% more up to 15% less than the speed of rotation of the drive roller is m, beneath the printing roller establish supportive cushion with the formation of the contact zone between them, the rollers rotate toward each other at different speeds in the direction of movement of the substrate, the substrate is passed through a zone of contact, put on her thermosensitive material and away from the plane of the contact zone at an acute angle.

5. The method according to PP.2, 4, characterized in that the substrate away from the plane of the contact zone at an angle 5 40o.

6. A method of manufacturing a wave mechanical fastening device, characterized in that the prong free form, heated at least to the melting temperature of thermosensitive material, which is served in a cell means for applying, made in the form of printed cushion, printed under the platen install support roller with the formation of the contact zone between them, the rollers rotate toward each other in the moving direction of the substrate, the substrate is passed through a zone of contact, put on her thermosensitive material and away from the plane of contact at an obtuse angle.

7. The method according to p. 6, characterized in that the substrate away from the plane of the contact zone at an angle of 100 to 110o.

8. The method according to p. 7, otline contact 90o.

9. A method of manufacturing a wave mechanical fastening device, characterized in that the tooth freely shape, heat at least to the melting temperature of thermosensitive material, then it is served with means for applying to the substrate, which is moved relative to the means for applying at a faster speed, the feed rate of the heat-sensitive material at the time of application to the substrate with a positive speed difference.

10. The method according to p. 9, characterized in that the means for applying heat-sensitive material, made in the form of printed cushion with cells that rotate at a peripheral speed different from the speed of the substrate, the speed of the floating substrate is greater peripheral speed of the printing roller.

11. The method according to p. 9, characterized in that the substrate is moved with a speed of at least 2% greater than the speed of rotation of the cell, i.e. with a positive speed difference constituting at least 2%

12. A method of manufacturing a wave mechanical fastening device, characterized in that the prong free form, heated at least to the melting temperature of thermosensitive material,enableval supporting roller with the formation of the contact zone between them, the rollers rotate toward each other in the moving direction of the substrate at a speed different from the speed of the substrate, the substrate is passed through a zone of contact, put on her thermosensitive material and away from the plane of the contact zone at an angle, increase the speed roaming of the substrate relative to the peripheral speed of the printing roller and move the substrate through the contact zone with a speed of 2 to 16% greater speed of the printing roller.

 

Same patents:

The invention relates to the fabrication of powder materials, in particular to the processing of polymeric materials such as Teflon-4 (polytetra - veratile, PTFE, f-4) in the product, and can be used to produce reinforced tapes or strips of unlimited length from a number of materials such as rubber, graphite, ceramics, metal powders and the like, and compositions on their basis

The invention relates to the field of engineering, namely, to designs of devices for the continuous manufacture of products from polymeric materials, such as endless belts of the conveyors for various purposes

The invention relates to the fabrication of powder materials, in particular to the processing of polymeric materials such as Teflon (polytetrafluoroethylene, PTFE, f-4 ) in the product, and can be used to produce tapes or strips of unlimited length from a number of other materials such as rubber, graphite, ceramics, metal powders and the like, and compositions on their basis

The invention relates to woodworking industry and can be used for the manufacture of hollow moldings round shape in cross section of wood or other press-songs

FIELD: equipment for retaining and/or connecting various members, such as shoe parts, bracelets etc.

SUBSTANCE: retaining and/or connecting device comprises two members A, B including teeth 2 and slots 5, respectively, said slots being adapted for receiving of teeth upon connecting of both members. Teeth 2 are manufactured from elastic flexible material and deformed in slots 5 upon connecting of both members so as to provide for holding of both members A and B together. Said teeth recover their shape after disconnecting of members A and B from one another. Said device is also used in bracelet and shoe part.

EFFECT: increased wear-resistance, provision for keeping of good fixation even after prolonged operation, and also precise fixing in desirable position.

9 cl, 6 dwg

FIELD: composite materials.

SUBSTANCE: invention aims at manufacturing composite fabrics comprising substrate with one or several discrete polymer areas. At least some of them are formed from elastomeric thermoplastic composition transferred onto substrate from recesses formed in transferring roller. Discrete elastomer polymer areas can be utilized to impart elasticity to substrate or to control degree of elasticity of the substrate.

EFFECT: achieved flexibility in controlling elasticity of fabrics.

10 cl, 27 dwg, 22 ex

FIELD: personal demand items.

SUBSTANCE: item is equipped with mechanical fastener and is intended for wear by user. Item includes the main section for wear by user. The main section includes fastening layer and fibrous fastening layer comprising multiple fibres. The other main section also includes foamed layer, besides foamed layer has the first surface including multiple freely arranged connections suited for fixation of at least part of multiple fibres of fastening layer.

EFFECT: invention provides for high resistance to shift and strength in case of exfoliation.

25 cl, 67 dwg, 6 tbl, 13 ex

Sanitary towel // 2389462

FIELD: medicine.

SUBSTANCE: invention relates to disposable sanitary towels used to protect items, such as chair pillows, bed-clothes or a changing table. A sanitary towel contains a longitudinal symmetry line, the first and second longitudinal edges, and the first and second transverse edges. The sanitary towel also contains a top layer for liquid reception turned to the user, and essentially fluid-tight bottom layer turned from the user. The sanitary towel is provided with a belt to attach the sanitary towel to the user so that to ensure the towel follows the user while moving.

EFFECT: application of the invention provides protection of the item to be protected owing to that the towel is fixed concerning the user and the item.

37 cl, 7 dwg

Disposable diaper // 2409337

FIELD: medicine.

SUBSTANCE: disposable diaper has a section of engagement, which is arranged so that force of separation of clasp tape is such that it reduces stepwise or smoothly from central part along width of item towards edges at both sides, or section of engagement produced from a layer of stitch elements is arranged so that stitch elements of stitch base layer could be open in holes of perforated protective layer.

EFFECT: improved force of diaper engagement.

12 cl, 12 dwg

FIELD: system and methods for producing of composite fabrics containing structured discrete polymeric regions on at least one surface of fabrics.

SUBSTANCE: method involves transferring one or greater number of discrete polymeric regions onto basic surface of substrate under pressure enabling impregnation of thermoplastic material by substrate and/or encapsulation of substrate fibers; obtaining composite material including discrete structured polymeric regions formed therein for one pass, with substrate and melted thermoplastic composition being fed simultaneously; regulating form and volume of discrete polymeric regions and distance therebetween regardless of velocity of system line; obtaining one or greater number of discrete polymeric regions arranged along the entire length of substrate by means of transfer roll so that form and sizes of said regions are regulated; obtaining various discrete polymeric regions arranged crosswise of substrate from various thermoplastic compositions, with properties of various discrete polymeric regions applied onto substrate varying in fabric crosswise and lengthwise directions; obtaining one or greater number of discrete polymeric regions at both main surfaces of substrate. System has substrate 10 with greater number of reinforcing discrete polymeric regions 14 arranged on surface or within composite fabric. Discrete polymeric regions 14 are produced by applying of melted thermoplastic composition from slots 34 provided on transfer roll 30 onto substrate 10. Each of discrete polymeric regions 14 is then formed so that multiple structures 12 are produced within these regions. Such structures may include rods with heads or free of heads, hooks as part of securing hook-and-loop system, pyramids etc.

EFFECT: increased efficiency and improved quality of composite materials.

42 cl, 20 dwg

FIELD: textile industry; chemical industry; methods of production of the composite fabrics with the reinforcing polymeric areas and the elastic polymeric areas.

SUBSTANCE: the invention presents the elastic product including the substrate with one or more reinforcing discrete polymeric areas, and also the composite fabric including the indicated substrate and the method of its production. The method provides, that they form on the substrate the set of the discrete polymeric areas of the elastomeric and non-elastomeric thermoplastic compounds. The composite fabric contains one or more dividing lines determining the boundaries of the set of the separate sections including at least one non-elastomeric discrete polymeric area and at least one elastomeric discrete polymeric area. The composite fabric contains the laminated substrate. The technical result of the invention is production of the discrete polymeric areas stretching along the whole length of the substrate, without their possible expansion together with the basic surface of the substrate.

EFFECT: the invention ensures production of the discrete polymeric areas stretching along the whole length of the substrate, without their possible expansion together with the basic surface of the substrate.

26 cl, 31 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of films from superhigh-molecular polyolefin. Proposed method comprises affecting initial superhigh-molecular polyolefin with weighted mean molecular weight of, at leas 500000 g/mol in the form of compacted powder by isobaric press. Besides, compacted polyolefin of rolling stage is subjected to definite processing. Also, it is stretched at such conditions whereat polymer processing temperature does no up to magnitude exceeding its fusion point at no point whatsoever.

EFFECT: high-quality films from superhigh-molecular polyolefin.

15 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to substrate-free conducting surface coat and method of its production. Proposed surface coat includes central layer consisting of the particles produced mincing of said sheet. Said particles are sintered particles embedded in polymer matrix. Said particles and/or said polymer matrix contain conducting material. Proposed method comprises the steps that follow. a) Sheet mincing to produced said particles. b) Making the polymer-based powder for polymer matrix. c) Application of said particles on moving belt carrier. d) Application of said polymer-based powder on said particles. e) Heat treatment and compaction of said particles and said polymer-based powder at the press.

EFFECT: substrate-free surface coat with antistatic properties.

17 cl, 5 tbl, 10 dwg, 19 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of billets from synthetic material reinforced with synthetic material. At first step, continuously fed plies of fibrous material is subjected to plastic deformation in a definite way. At second step, produced section is purposefully flexed by lengthwise plastic deformation. Note here that radius of lengthwise plastic deformation can be adjusted.

EFFECT: accelerated production process.

13 cl, 18 dwg

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