Hydrocrowding with usage of fabric containing depressed fibers
FIELD: textile; paper.
SUBSTANCE: presented bed for implementation of hydrocrowding process is manufactured by means of including in it depressed fibres during its manufacturing or forming of depressed fibres by means of calendering or grinding of initial fabric. Including of depressed fibres into bed at manufacturing of nonwoven fabrics provides higher crowding of fibres forming nonwoven fabrics.
EFFECT: creation of more rugged finished nonwoven material.
20 cl, 10 dwg
The technical field
This invention relates to the production of nonwoven materials and, in particular, for the production of nonwovens using process getoperation.
Description of the prior art
Nonwoven materials are used in many areas, which can be advantageously used their structural quality. Materials of this type differ from traditional woven or knitted fabric so that the fibers or filaments of the nonwoven material are combined in associated canvas without the use of traditional processes of weaving. The entanglement of the fibrous elements of the fabric allows the formation of a material with the desired solidity, and the selected process reversal allows us to give the material the pattern to achieve the desired aesthetic qualities.
As a rule, non-woven fabrics formed from fibers fixed in place by the interaction of these fibers with obtaining strongly coupled structures, often without the need for melting the binder component or thread. Items may have a repeating pattern of regions of entangled fibers with a high surface density (weight per unit area)than the average surface density of the material, and the connective fibers that run between the dense entangled regions and randomly re Otani with each other in a dense entangled regions. Local mixed region can be connected by fibers passing between adjacent entangled regions to form a region with a lower surface density than the adjacent areas of high density. The pattern of the holes is essentially free of fibers, may be formed in a dense entangled regions and connecting the fibers or between them.
Some products dense mixed region are arranged in a regular pattern and are connected orderly groups of fibers to create a material that has the appearance similar to the plain woven material, but in which the fibers are randomly through the fabric from one mixed up the field to the other mixed region. Fiber-ordered group can be either essentially parallel or randomly placed relative to each other. Implementation methods of the invention include materials having complex patterns of fibers with areas of mixed fibers associated ordered groups of fibers that are located in zones of different material thickness. These materials are particularly suitable for clothing, including dresses and suits, as well as for use as engineering materials, such as cleaning materials.
As mentioned above, the fibers are fixed n is its place in the material by the interaction of the fibers. "Lock in place" implies that the individual fiber structures not only have no tendency to move from their respective positions in the structure of the pattern, but in fact this movement is physically prevented by the interaction of the fiber with yourself and/or with other fibers of the material. The fibers are fixed in place in the areas of entangled fibers with a higher surface density than the average surface density of the material, and this interaction fibers can also occur in any other place.
Under "interaction", it is assumed that the fibers are rotated, wound, roll back and forth, and are near each other in all directions patterns with complex entanglement that these fibers attach to each other when the fabric is subjected to mechanical stress.
Mechanical processes clutter bind or fasten the layer or layers of fibers with each other or with the substrate by perforation of webs, a large number of barbed needles in the device, called needling machine. This operation carries fibers from the surface of the layer of fibers in a lot of webs and through it. Although such entanglement of fibers in the canvas characteristics of strength improves, the process can be slow, needle damage the fibers themselves quickly isnative who are, but the process is essentially suitable only for rotation with the use of heavy supporting structures.
To avoid these problems were developed processes fastening webs jets, which use the energy of high coherent water jets small diameter and high pressure to simulate pereputyvayutsya actions needle of the machine. The method includes forming a fibrous cloths air or wet laying, after which the fiber mix up by means of very fine water jets under high pressure. Several rows of water jets directed to a fibrous fabric, which is supported by a floating wire mesh or cloth. Bound entanglement of the fibrous fabric is then dried. The fibers used in the material can be synthetic or restored staple fibers, such as complex polyester, polyamide, polypropylene, viscose or similar cellulosic fibers or mixtures of cellulose fibers and staple fibers. Water method can produce nonwovens with high quality, reasonable price and high absorbency. They can be used as cleaning materials for home or industrial use, as well as materials for products one is disposable for medicine, for the purposes of hygiene, etc.
The process of getoperation can be used for the production of a large number of different products by changing the source material and/or used tapes/elements to form the figure. The source material may be made of any fabric, Mat, web or the like layer of loose fibers arranged in a random order relative to each other or with some degree of orientation. The term "fiber"as used here refers to all types of fibrous materials, natural or artificial, including fiber-binder film, paper fiber, textile staple fibers and continuous fibers. Improved properties can be obtained by suitable combinations of short and long fibers. Composites are formed by combinations of segments staple fibers with fibrous essentially continuous strands, where the term "strand" includes continuous fibers and various forms of continuous textile fibers (filaments), which can be straight or tortuous; other desired products are obtained, using the original material is a fiber with a high degree of tortuosity and/or elastic fibers. Non-woven materials with specific desired pattern is formed using a source material containing fibers having latent SPO is functioning to increase, to twist, sit, or otherwise to change in length, with subsequent treatment of the patterned non-woven structure for the manifestation of latent properties of the fibers thus to change the free length of the fibers. The source material may contain various types of fibers, such as compressible and non-shrink fiber, to obtain special effects in the activation of latent properties of one of the types of fibers.
Initially, the process of water included the use of pre-molded laid dry fibrous materials, which were lying on the surface with holes, so that the stream of water directed on the fibrous material moved or divided fibres and formed a picture of the changing density and the same holes. In most cases, the resulting cloth was only the rearrangement of fibers pre-formed sheet material, and rearranged fibers had very little, if at all there was a valid entanglement. Rearrangement of the fibers was a result of the use of water with sufficient pressure to move the fibers in the lateral direction, but insufficient for effective crowding. These canvases with rearranged fibers and holes are often required significant is richest a binder to give them strength, sufficient to allow further processing of such sheet materials.
As an example, figure 3 shows hydroperiodide system, which is described in U.S. patent No. 6163943, line 25 column 2 to row 3 column 4 (in this patent drawing labeled Fig 1).
The authors of this invention have found that the process getoperation on the fabric, which contains flattened threads, improves the resulting non-woven products.
Accordingly, this invention provides a fabric containing flattened filaments, for use as a supporting tissue in the production of non-woven material, through a process of getoperation, and how getoperation using a cloth.
List of drawings
The following detailed description is provided only as an example and is not intended to limit the scope of the present invention. It will be more understandable, in conjunction with the attached drawings, in which similar positions indicated like elements and parts.
Figure 1 shows a weaving pattern of one layer, not containing flattened threads.
Figure 2 shows the weaving pattern of one layer containing flattened filaments in accordance with this invention.
Figure 3 is a schematic image is their installation to getoperation, which is suitable for use in this invention.
On figa and 4B shows two local fabrics, suitable for modification in accordance with this invention.
Figure 5 shows a perspective representation of a fragment of the fabric shown in figa and 4B.
Figure 6 shows in larger scale a detail view of the fabric shown in figa and 4B, prior to its modification in accordance with this invention.
7 shows in larger scale a detail view of the fabric shown in figa and 4B, after modification in accordance with this invention.
Fig is a schematic illustration of the unit sections for getoperation suitable for carrying out the process of getoperation in accordance with this invention.
Figure 9 shows a detail view of the fabric/ribbon from the United spirals, suitable for modification in accordance with this invention.
Detailed description of preferred forms of carrying out the invention
Supporting tissues to getoperation according to this invention can be used in the plant for getoperation, such as the one shown in figure 3 and described in detail in U.S. patent No. 6163943, with a line 25 in column 1 to row 3 in column 4 with reference to figure 1. In the case of use in this installation, as shown in figure 3, the fabric according to the invention will be them who be kind of an endless belt, and this tape is to replace the wire grid 12.
Supporting tissues to getoperation according to this invention preferably is woven from monofilaments as in the weft direction, and foundations. As is well known to specialists of ordinary skill in the art, monofilament bases lie in the direction perpendicular to the machine direction of the fabric produced by the process of the infinite or modified endless weaving, while they lie in the machine direction (the direction of movement of the fabric in the car), if the fabric is woven flat. On the other hand, the weft monofilament lie in the machine direction in the fabrics produced infinite or modified endless weaving, but perpendicular to the machine direction of the fabric, woven flat.
Monofilament can be extruded or produced in any other way from any of the polymeric resins that are commonly used by experts in the field of machinery for the production of monofilaments, which are intended for use in fabrics for paper production, such as, for example, polyamide, complex polyester, polyetheretherketone, polypropylene, polyolefin and polyethylene terephthalate resin. Can also be used and other types of fibers, such as woven monofilament, comprehensive, continuous filament, to the scientists of complex continuous filaments, etc., which are known in the art.
It should be noted that although the description uses the terms "continuous filament" and "monofilament"that this invention is not limited to the terms "thread" and "monofilament", which is defined in the strict sense. The terms "thread" and/or "monofilament" is used here to denote a fiber, yarn, filament, continuous filament fibers, monofilament, complex fiber, etc. Thus, the fabric tape according to the invention can be woven from materials of any of these types or any combination of the materials of these species. In addition, the materials used for the manufacture of fabric can be natural or synthetic. Further, it is possible to use metal as the material for forming the tape. For example, can use metal or sintered metal fiber or can be used a thread with metallic shell with a core of monofilament. Can also be used when forming the ribbon combinations of various types of metallic materials.
In any case, the supporting fabric according to the invention contain flattened monofilament. Flattened monofilaments can be some or all of the monofilament perpendicular to the machine direction, some or all of the monofilament machine direction, or some combination of monofilament PE pendicular machine and machine directions.
1 and 2 are used to compare a single-layer weave without flattened monofilaments with a single layer of weaving weaving with the flattened monofilaments. As you can see, Fig. 1 shows a round monofilament 2 machine direction and a few round monofilaments 4, perpendicular to the machine direction. Figure 2 shows one round 6 monofilament machine direction and somewhat flattened monofilaments 8, perpendicular to the machine direction. Thus, in the form of the invention shown in figure 2, all of the monofilament perpendicular to the machine direction, are flattened. The use of flattened monofilament perpendicular to the machine direction, network weaving weave, shown in figure 2, with the thickness T'that is less than the thickness t of the weave in figure 1. In addition, the use of the flattened monofilaments in the weaving weave in figure 2, increases resistance to water flow in the direction perpendicular or substantially perpendicular to the plane in which lie the monofilament perpendicular to the machine direction. Region a and a' are shaded only in order to facilitate visual comparison.
Fabrics according to the invention can be formed as one-, two - or three-layer weave. Flattened monofilament can be included in any layer, or any combination of words is in, and they can be in any configuration in the specified layer. In the preferred form of the invention, the three-layer fabric is supplied in a flattened monofilaments, woven only in the layer worn (on the car) side of the fabric opposite the side on which the stacked fiber non-woven fabric), while round monofilament is used only in the layer forming side of the fabric (the side on which the stacked fiber non-woven fabric). In this form of the invention, the fiber non-woven fabric supported round monofilaments forming the sides, while the flat monofilament provide more reflected the flow of water so most of the reflected energy crowding. Contributing more reflected energy crowding, fabric contributes to greater entanglement of the fibers forming the nonwoven material, and thus provides greater durability of the finished non-woven material. That is, when water is directed onto the fabric in the direction perpendicular or substantially perpendicular to the plane in which lie flattened threads, some water will pass through the forming surface layer and the intermediate layer, to be reflected from the layer worn on the machine side and even more to confuse the fiber.
In Altern the active form of the invention, the two-layer fabric is supplied in a flattened monofilaments, included only in the layer worn on the machine side of the fabric, while round monofilament is used only in the other layer. In the case of three-layer form run-fiber non-woven fabric supported round monofilaments forming the sides, while the flat monofilament promote greater reflection of the water flow and, consequently, increase reflected energy crowding.
In another alternative form of the invention, the two - or three-layer fabric is supplied in a flattened monofilaments only in the layer forming side of the fabric. This provides better support for the fibers on the forming side.
In each form of the invention, the air permeability of the fabric is more than 350 cfm (to 9.91 m3/min).
In any case flattened continuous filaments according to the invention can be formed before or after they are woven into the layer, and flattening can be achieved in several ways. One way of forming the flattened filaments is in the extruding them in a way that gives a "flattened" the cross-section of the finished thread. Two other ways of achieving the necessary flattening are calendering and grinding, both of them can be performed before or after a continuous thread woven into the layer, and which can be used to modify the profile/cross-section of the filaments along their entire length or in limited areas of their length.
One of the fabrics that are suitable for modification in accordance with the invention, shown in figa and 4B, it is called FormTech 103A or Flex C. On figa shows a detail view of the side of unmodified fabric with long bends of the warp. FIGU is a detail view of the side of unmodified fabric with long bends of the weft threads. Figure 5 shows a perspective representation of the fabric shown in figa and 4B. Side of the fabric with the long weft kinks visible in figure 5 and indicated by the position 30, while the side with the long main kinks indicated by the position 32.
Figure 6 shows in larger scale the side of the long main kinks fabric depicted in figa and 4B. Figure 6 in a major scale are shown unmodified fabric, the "effective surface area" is the surface of the fabric is shown by the round and oval labels 34. 7 is a closeup of the side of the long main kinks tissue figa and 4B after this fabric was calendered in accordance with the invention. The fabric shown in Fig.7, calendering was applied only to the side with a long main kinks, and round and oval region 36 indicate the effective surface area of the side of the long main kinks after calendering. As you can see from the comparison Fig.6 and Fig.7,the calendering of the fabric substantially increases the effective surface area of the side of the long main kinks. This increase in effective surface area is implemented on the side of the long weft kinks when calendering is applied only to the side with a long weft kinks. In another form of the invention, calendarbut and the side of the long main kinks, and the long side weft kinks, this increases the effective surface area of both sides. It should be noted that calendering, considered in connection with Fig.7, is a calendering the woven material, and accordingly, such calendering results in flattening of at least parts of all of the fibers/yarns in the fabric. It is also worth noting that the calendering shown in Fig.7, leads to a decrease in the thickness of tissue by approximately 15% compared to its uncalendered state and to decrease approximately 20% of air flow through the fabric compared to her uncalendered state.
On Fig shows a section setup for getoperation suitable for carrying out the process of getoperation using calendered fabric shown in Fig.7. As you can see in Fig, section installation for getoperation contains fabric 38 to getoperation, such as fabric, shown in Fig.7, a few rollers 40A, guiding the fabric to getoperation is, the first drum 42, the second drum 50, the sealing cloth 44, several rollers 46a-e, guides, seal fabric, the first water nozzle 47 and the second water nozzle 48. The fibrous sheet and the resulting non-woven material produced by the installation is indicated by the position 52. During operation, the fibrous fabric is applied to the fabric 38 to getoperation, is compressed between it and the sealing cloth 44, is subjected to jets of the first water nozzle 47 and then is subjected to jets of the second water nozzle 48, which is the main perepucyvatus nozzle.
Mixed fabric is released from the fabric 38 to getoperation at the point 54 of separation, where the canvas is captured by the second drum 50. Relatively pig it should be noted that although this drawing is considered as showing "section" installation for getoperation, it is possible that the elements of the drawing is a whole setup for getoperation.
The advantages of getoperation according to the invention were confirmed using modified versions of the fabric shown in figa and 4B, at the facility containing the structure shown in Fig. In particular, the invention reduces the tangling of the fibers with the surface of the fabric and improves the reflection (or kickback) water jets. In addition, invented the e improves the separation of the fiber fabric and fabrics for getoperation after clutter and improves the tensile strength in the machine/perpendicular to the machine direction. More specifically, the test using the installation constructed in accordance with Fig showed that the separation of the fiber fabric and fabrics for getoperation improved so that the thrust is reduced from about 8 to 0%, and the improvement ratio of tensile strength in the machine/perpendicular to the machine direction is from about 10 to 40%.
In addition, when the invention is carried out by calendering the fabric, similar to that shown in figa and 4B, the advantages of the invention are realized regardless of calendarbut whether both sides of the fabric or only one side of the fabric, and in the case of calendering the one hand no matter which direction calendarbut. In addition, the calendering of the fabric improves the smoothness of the transportation of prefabricated in the plant for getoperation, linear increases speed and reduces cravings and orientation in the machine direction.
Although the invention is shown and described in connection with preferred forms of its implementation, the specialists of ordinary skill in the art will readily understand that various changes may be made without departure from the essence and scope of the invention. For example, the invention can be carried out in relation to fabrics/tapes to getoperation made the C United spirals. Fabric/ribbon from the United spirals discussed in U.S. patent No. 4345730, the content of which is incorporated in this description by reference to the corresponding source.
Figure 9 shows a detail view of the example of the tissue 60 from the United spirals, which are suitable for modification in accordance with this invention. As can be seen in Fig.9, the fabric of this type is formed of a plurality of helical monofilaments 62 and a variety of connective monofilaments 64. As in the case of forms of embodiment of the invention with native threads/perpendicular to the machine direction, the spiral and the connecting filaments can be extruded or made otherwise of any of the polymer resins that are typically used by experts of ordinary skill in the art for the manufacture of monofilaments, which are intended for use in fabrics for paper production. Here, the terms "thread" and "monofilament" used in the same wide sense in which they were used to describe the form of the invention, the thread machine/perpendicular to the machine direction.
After the fabric shown in Fig.9, is modified in accordance with the invention, it contains flattened monofilament. Flattened monofilaments can be some or all of the helical monofilaments, some or all of the connection m is nonita, or some combination of spiral and connective monofilaments. In any case, flattened strands according to the invention can be formed before or after they are built into the fabric of the United spirals, and flattening can be achieved through any of several methods, considered in connection with the forms of the invention, the thread machine/perpendicular to the machine direction. That is, flattened strands can be formed by extruding them to give a "flattened" the cross-section of the finished thread, as well as calendering or grinding. As in the case of forms of embodiment of the invention with native threads/perpendicular to the machine direction, the operation of the calendering and grinding can be performed before or after the threads are embedded in the fabric, and can be used to modify the profile/cross-section of the filaments along their entire length or in limited areas of their length.
Flattened monofilament fabric, shown in Fig.9, contribute to the creation of more indirect flow of water, thus contributing to greater entanglement of the fibers forming the nonwoven material, and thereby create a more durable finish non-woven material.
1. The support tissue for the implementation process getoperation in combin, the tion with the device for getoperation, produced by inclusion of flattened filaments during its manufacture.
2. The supporting fabric according to claim 1, which contains the threads of the machine direction and the threads perpendicular to the machine direction, and the aforementioned flattened strands include only a portion of the threads of the machine direction.
3. The supporting fabric according to claim 1, which contains the threads of the machine direction and the threads perpendicular to the machine direction, and the above-mentioned flattened strands include all the threads of the machine direction.
4. The supporting fabric according to claim 1, which contains the threads of the machine direction and the threads perpendicular to the machine direction and flattened strands include only a portion of the threads perpendicular to the machine direction.
5. The supporting fabric according to claim 1, which contains the threads of the machine direction and the threads perpendicular to the machine direction, and the above-mentioned flattened strands include all the threads perpendicular to the machine direction.
6. The supporting fabric according to claim 1, which contains the threads of the machine direction and the threads perpendicular to the machine direction, and the aforementioned flattened strands include a combination of the threads of the machine direction and yarns perpendicular to the machine direction.
7. The supporting fabric according to claim 1, which is double-layered fabric, and flattened strands included in one layer.
8. Support the supporting fabric according to claim 7, in which mentioned one layer is a layer of hand, put on the machine.
9. The supporting fabric according to claim 7, in which the mentioned one layer is a layer forming the side.
10. The supporting fabric according to claim 1, which is a three-layer fabric, and flattened strands included in one layer.
11. The supporting tissue of claim 10, in which the mentioned one layer is a layer of hand, put on the machine.
12. The supporting tissue of claim 10, in which the mentioned one layer is a layer forming the side.
13. The supporting fabric according to claim 1, the permeability of which is higher than 350 cfm (to 9.91 m3/min).
14. The supporting fabric according to claim 1, which is made from the United spirals.
15. The supporting fabric according to claim 1, in which the flattened filaments formed by extrusion before were woven supporting fabric.
16. The supporting fabric according to claim 1, in which the flattened filaments formed by calendering neoplasene threads before were woven supporting fabric.
17. The support tissue for the implementation process getoperation in combination with a device for getoperation containing included flattened filaments formed by calendering or grinding of the original tissue.
18. Supporting the fabric on 17, in which the calendering is applied only to one hundred is one of the original tissue.
19. Supporting the fabric on 17, in which the calendering is applied to both sides of the original tissue.
20. Supporting the fabric on 17, which is made from the United spirals.
SUBSTANCE: invention relates to an apparatus for colourless patterning of a textile fabric made of mutually interlaced and thus strengthened natural or synthetic fibres, preferably of a nonwoven fabric such as a wadding web, which is also dried in the case of a wet treatment such as hydrodynamic needling. The apparatus comprises a housing and a revolving drum provided therein, whereby the textile fabric is pressed by an overpressure and underpressure against the drum having perforations so that the cross-sectional areas of the perforations generate a picture pattern on the textile fabric, wherein an external peripheral surface of the drum being subject to drawing is provided with perforations depicting an image, which perforations act in diverse pattern-imparting fashions on the textile fabric resting thereon. Moreover, the drum and its external peripheral surface are microperforated as a whole and thus fluid-permeable, and the pattern-imparting perforations are sized larger than the microperforation of the surface supporting the textile fabric, Moreover, the textile fabric is capable of leading the fluid away from the entire surface in a region of the pictorial pattern and also beyond peripheral regions of the pictorial pattern.
EFFECT: providing a method with which a pattern can be continuously imposed on a nonwoven fabric in the course of treatment.
11 cl, 2 dwg
FIELD: technological processes.
SUBSTANCE: invention is manufactured out of thermostable or heat resistant fibres and may be used for manufacturing parts out of thermal structural composite material. Carbon nanotubes are in-built into fibre structure by means of their growing on the heat-resistant fibres of the basis.
EFFECT: provides more well-ordered tightening of parts and improvement of mechanical qualities.
31 cl, 6 dwg, 9 ex
FIELD: reinforcement and protection of ground surfaces such as ground planning embankment slopes, automobile and railway roads, open pits, dry slopes of earth-fill dams etc from erosion processes by quick recovery of soil and plant layer.
SUBSTANCE: biomat is formed as multiple-layer, at least three-layer, structure including layers of cloth comprising artificial chemical fibers, and intermediate layer placed between each two cloth layers and secured therewith, said intermediate layer comprising plant seeds. Natural fibers are added into cloth so as to form mixture of natural and synthetic fibers, said mixture containing at least 15-50 wt% of synthetic fibers and 50-85 wt% of natural fibers from materials which form upon decomposition nutritive medium for plants, and surface density of cloth ranging between 250 and 800 g/m2. Apart from seeds of plants presented in cloth structure in an amount of 60-150 g/m2, cloth additionally contains nutrient mixture consisting of fertilizers, plant growth promoters and soil forming additives selected with soil-ground conditions of region where biomat is to be utilized and composition of used seeds being taken into consideration. Content of nutrient mixture is 20-90 g/m2. Also, natural or artificial sorbing substances are introduced into biomat structure in an amount of 30-600 g/m2 by embedding of these substances into cloth or composition of intermediate layer. Biomat may be readily unrolled on any ground surface and serves as artificial soil layer.
EFFECT: high moisture retention capacity providing formation of stable soil and ground covering, improved protection of ground surface from erosion processes, retention of plant seeds during growing, efficient development of root system during vegetation and high vitality of plant covering during formation thereof.
7 cl, 1 tbl
FIELD: chemical and light industry, in particular, production of viscose staple fiber containing antibacterial preparation for manufacture of non-woven material used for manufacture of air filters.
SUBSTANCE: method involves washing formed viscose threads; squeezing to provide 50%-content of α-cellulose; treating with aqueous catamine solution having mass concentration of 15-40 g/dm3; providing two-staged washing procedure in countercurrent of softened water at feeding and discharge temperature difference making 4-6 C at first stage and 3-5 C at second stage. Temperature of aqueous catamine solution is 18-30 C. Resultant thread has linear density of single fibers of 0.17-0.22 tex and mass fraction of 0.6-4.0% of catamine. Thread is subjected to drying process at temperature of drying drum surface of 80-90 C, followed by corrugation and cutting into 60-70 mm long fibers. Method further involves fixing resultant fibrous web by stitching process on substrate of thermally secured polypropylene having surface density of 10-30 g/m2.
EFFECT: enhanced antibacterial properties and reduced aerodynamic resistance of resultant material allowing blowing-off of fibers from filter layer by flow of air under filtering process to be prevented.
3 cl, 2 tbl, 6 ex
FIELD: textile industry, in particular, versions of nonwoven fibrous material made in the form of needle stitched web.
SUBSTANCE: material is manufactured from mixture of high-melting point and various low-melting point fibers, with main fiber being two-component polyester fiber of "core-coat" type. Polymer of "coat" has melting temperature substantially lower than polymer of "core". According to first version, low-melting point fiber used is staple two-component polyester fiber of "core-coat" type having thickness of 0.4-1.0 tex, length of 50-90 mm and melting temperature of "coat" polymer of 105-115 C. High-melting point fiber is staple polyester fiber having thickness of 0.3-1.7 tex, length of 60-90 mm and melting temperature of 240-260 C. Ratio of fibers in mixture, wt%, is: staple two-component polyester fiber of "core-coat" type 30-70; staple polyester fiber the balance to 100. According to second version, nonwoven fabric additionally comprises auxiliary staple polypropylene fiber having thickness of 0.6-1.7 tex, length of 50-90 mm and melting temperature of 150-160 C. Ratio of fibers in mixture is, wt%: staple two-component polyester fiber of "core-coat" type 30-70; staple polypropylene fiber 5-20; staple polyester fiber the balance to 100.
EFFECT: improved operating properties and form stability of parts manufactured from nonwoven fibrous material under conditions of changing temperature loadings.
3 cl, 1 tbl, 5 ex
FIELD: textile industry.
SUBSTANCE: three-dimensional nonwoven fibrous textile material is composed of netted woven carcass and layers of fibrous cloths arranged at both sides of carcass and mechanically attached thereto. Carcass is produced from thermoplastic weft threads with linear density of 29-72 tex and thermoplastic warp threads with linear density of 14-20 tex and surface density of 80-220 g/m2. Said threads are preliminarily subjected to shrinkage. Method involves applying onto melted netted woven carcass layers of fibrous materials and mechanically attaching said layer in alternation to each side; applying onto each side of carcass at least one layer of fibrous cloth and attaching it by needle stitching; subjecting nonwoven material to thermal processing at temperature of 80-1580C under pressure of 0.3-0.6 MPa for 40-120 min.
EFFECT: improved organoliptical properties and improved appearance of material.
FIELD: textile, paper.
SUBSTANCE: invention is referred to protective items including those proved from stabbing weapon attack and preferably, protective items proved from stabbing weapons and bullets. It consists of multiple set of flexible layers with surface density from 0.5 to 6.0 kilogram per square meter. Each layer is made of woven fabric which density factor from 0.75 to 1.15. It is manufactured from yarn with linear density 500 dtex or less, density from 3 to 20 grams per dtex and fracture energy from 8 to less than 30 J per gram. In addition, yarns contain staple fibers with linear density from 0.2 to 7.0 dtex per fiber.
EFFECT: production of advanced, flexible and light item proved from stabbing weapon attack as well as bullets, if necessary.
19 cl, 5 dwg, 2 tbl, 5 ex
FIELD: fixed constructions; reinforcing of the soil surface of road slopes and shore lines, protection of mainline pipelines against soil erosion using geogrids.
SUBSTANCE: geogrid comprises set of flexible tapes made of a woofed structure material that are set on edge and attached one to another with seams to form a meshed structure when the grid in set position. The tapes are made of a material having a woofed structure formed of 150 to 300 polypropylene threads in warp direction and of polypropylene fibrillated or multifilament threads in weft direction, and having a breaking force not less than 100 kN/m. The used seams are shuttle-type seams with bar tacks. The length of the geogrid in its set position is from 10 to 20 m, the width is up to 10 m, and the height - from 50 to 150 mm. The geogrid mesh sides are from 50 to 500 mm in its set position in longwise and crosswise directions. The thickness of flexible woofed tape is from 1.0 to 2.0 mm. The seams are stitched vertically in relation to the flexible edges with twisted sewing threads, made of polyether or polyamide or other synthetic threads with a breaking load not less than 60 N, ensuring a minimal breaking load of the seam not less than 50% of the tape breaking load of the tapes.
EFFECT: enhancement of the geogrid performance characteristics; ultraviolet rays resistance of the material; biological stability; environmental security; maintaining stable characteristics to allow using the geogrid at all times and at all temperatures.
4 cl, 4 dwg, 1 tbl
FIELD: transport engineering; seat belts.
SUBSTANCE: design peculiarity of strap is that it contains first group of warp treads 1 and second group of warp threads 2, warp threads 1 of first group are more extensible than those of warp threads 2 second group, and warp threads 3 of third group are included into warp threads 2 of second group. Warp threads 3 of third group contains electric conducting means 4.
EFFECT: increased strength of strap.
10 cl, 3 dwg
FIELD: fabric used in aircraft industry for manufacture of wing and tail covering of plane.
SUBSTANCE: fabric is produced from warp and weft polyester complex filaments having similar linear density ranging between 27.7-29.4 tex and twist rate of 130-160 twists/min. Warp to weft filament ratio of fabric is 55-50:45-50. Fabric is produced by twill weave and is not subjected to final finishing procedure.
EFFECT: provision for stretching of covering owing to thermal shrinkage of proposed fabric structure, reduced weight, and prolonged service life of fabric.
3 cl, 1 tbl, 7 ex
FIELD: light industry, in particular, elastic fusible interlining material based on woven fabric and adapted for doubling of cutting parts for sewing articles.
SUBSTANCE: woven fabric for fusible interlining material is made from textured polyester threads of crepe weave with linear warp and weft density of 10-24 tex and fabric thread density of 12-24 threads/cm. Fusible interlining covering is made in the form of chaotically arranged glue dots having diameter of up to 1 mm and dot spacing of up to 3 mm. Surface density of fusible covering is 13-17 g/m2.
EFFECT: improved operating characteristics of interlining material.
2 dwg, 1 tbl, 4 ex
FIELD: textile industry.
SUBSTANCE: invention provides fireproofing textile for use when sewing special technical clothing for workers of Emergency Control Ministry, Ministry of defense, and other force structures in order to protect workers working at enterprises including high-temperature objects, elevated heat emission, molten metal scrap containing objects, hot shops, and the like. Fireproofing textile contains staple yarn within warp and weft, said staple yarn incorporating aromatic terpolymer-based staple filaments mixed with natural and artificial fibers. Fabric is manufactured using derived, combined, and composed weaves. As natural fibers, cotton, linen, and woolen fibers are used and, as artificial, fireproofing viscose fibers.
EFFECT: improved performance characteristics of fabric, expanded assortment possibilities and resource of raw materials.
6 cl, 6 dwg, 1 tbl, 6 ex
FIELD: manufacture of cloths provided with at least one fold or formed as zigzag put folds.
SUBSTANCE: cloth provided with at least one permanent fold comprises shrinkable material fixed in direction within at least one fold formation zone. Said material is shrunk as a result of processing in direction diagonal to above direction. Method allows cloth to be manufactured, which comprises one or more folds, and also cloth formed as zigzag put folds.
EFFECT: wider range of cloths manufactured by said method.
18 cl, 8 dwg
FIELD: textile industry, in particular, manufacture of special medical and rehabilitation articles, for example, physiotherapeutic mats, plaids and clothing parts contacting directly with human body.
SUBSTANCE: antistatic fabric contains systems of warp threads defining background layer and weft threads, said threads being based on chemical and/or natural filaments, and current conductive netted material defined by complex current conductive polymer threads of enclosure-core structure, with fabric warp and weft repeat pattern containing from 10 to 24 threads, including single complex current conductive polymer threads in an amount of from 1 to 12 filaments. Complex current conductive polymer threads of enclosure-core structure are made on the basis of capron filaments covered with continuous current conductive composition based on copolymer of tetrafluoroethylene and vinylidene fluoride, filled with technical carbon at weight ratio of from 1:0.6 to 1:0.8, with total linear density of complex current conductive polymer filament making 52-58 tex.
EFFECT: enhanced antistatic properties of fabric by eliminating the possibility of accumulation of static electricity on surface of article manufactured from said fabric and contacting directly with human body.
2 cl, 5 dwg
FIELD: industrial fabric used in pulp-and-paper industry and associated branches of industry.
SUBSTANCE: industrial fabric comprises threads extending in the course of advancement of paper in machine, and threads extending traverse to course of advancement of paper in machine, said threads being interwoven so as to form woven structure. At least some of threads extending in the course of advancement of paper in machine and/or threads extending traverse to course of advancement of paper are threads having core filament surrounded with enclosure. Core filament and enclosure may be visually distinguished from one another by unaided eye, for example by color, so that wear of industrial fabric surface may be visually controlled during its service life on the basis of changing which is distinguished upon wearing and losses of enclosure from core filament.
EFFECT: provision for controlling wear of fabric in any point on its inner and outer surfaces.
FIELD: woven materials for magnetic systems and electromagnetic radiation shields.
SUBSTANCE: proposed magnetically soft fabric used as magnetically soft material has mixture of powdered alloy of falsifier with grain size of 5 to 10 μm and magnetically soft Mn-Zn-ferrite with grain size of 50 to 100 μm , and binding polymer. Fabric warp is made of lavsan using textile technology; proportion of ingredients is as follows, mass percent: lavsan threads, 30-20; binding polymer, 15-20; magnetically soft ferrite powder, 30-50.
EFFECT: ability of shielding external superhigh-frequency electromagnetic radiation in ferromagnetic resonance mode.
1 cl, 1 tbl, 3 ex
SUBSTANCE: invention relates to the removal of solid particles from liquids and gases, in ecological processes of treatment of sewage and smoky gases in cases of oil spills from tankers, oil pipelines and oil tanks and also for collecting petroleum products from the surface of water. The filtering material, consists of synthetic threads in the form of the tubular jersey having a piled surface with comminuted rubber placed in it, the piled surface on the back side of the tubular jersey consisting of two layers, and the lower layer is made from binder thread, consisting of inextensible and elastic yarn, and the top layer is made of plating inextensible cord, in this case the height of the top layer is 0.5-3.2 times more than bottom.
EFFECT: improvement of quality of filtering during the cleaning liquids and gases and improvement of a degree of removal of petroleum products stormy and industrial discharges.
3 ex, 1 tbl, 2 dwg