Method of producing workpiece from packing laminate, workipiece thus produced and packing container

FIELD: process engineering.

SUBSTANCE: invention relates to fabrication of workpiece from thermally sealed and foldable laminate for packing container resisting SHF heating. Endless ribbon (1) of starting laminate (10) moves in packing laminate conversion line. Endless workpieces for aforesaid packing containers are directed from top to bottom and across machine processing direction in conversion line and top-to-bottom interface (51). Starting laminate (10) is made with bents and cuts for workpieces (50a, 50b). Endless ribbon (2) from heat and electrically conducting material is applied along machine processing direction above aforesaid interface (51) and in combination with stage (a). Elongated indication (53) of hole is effected prior to or after applying ribbon (2). Hole indicator stays within the limits of aforesaid ribbon. Packing container is formed by folding, is filled and sealed by workpiece (50a, 50b).

EFFECT: higher density, reliability and tightness.

23 cl, 8 dwg

 

The technical field to which the invention relates

The present invention relates to a method of manufacturing a preform from termopane and bendable laminate for packaging container, resistant to microwave heating, comprising the steps:

(a) continuously moving the tape from the source of the laminate in the conversion of the line to convert it to a packaging laminate so that a continuous billet for these packing containers are oriented in its direction of up and down across the direction of computer processing on the conversion line and the surface of the partition top-to-top/bottom,

(b) ensure that the specified source laminate bends and cuts for these blanks from the packaging laminate.

The present invention also relates to the thus obtained preparation, and also to the packaging container, which, arising from such blanks, forms, content filled, sealed and preferably autoclaved or alternatively filled with hot content.

The prior art to which the invention relates

The packing laminate is already known, for example, from International patent application WO97/02140. Known packaging laminate is a rigid, but foldable base or bulk layer of paper or cardboard and naru is nye, sealed cover from moisture and heat resistant thermoplastic material on both sides of the inner layer. To give a known packaging laminate property of tightness with respect to gases, in particular for gaseous oxygen, the packaging laminate, in addition, equipped with a barrier to gas, for example aluminum foil located between the inner layer and one outer coating.

For example, from rulesgeneral tubular packaging blanks are autoclavable containers, in which the packaging blank is first raised to an open tubular packaging Board, whose one end is sealed by the formation of the bend and sealed continuous folding of the end panel from the packing carton for forming an essentially flat bottom seal. Packing cardboard, provided with a bottom, is filled with relevant content, such as food, through its open end, which is then compacted by the formation of additional fold, and seal the corresponding end panel of the packaging Board for education essentially flat upper seal. Of course, the upper seal packaging Board may instead be formed earlier, in this case, its content, then performance is in the bottom. The filled and sealed packaging cardboard, usually rectangular in shape then ready for heat treatment, to give the packaged food product a longer retention time in the closed packaging cardboard, for example, the retention time of at least 6 months, often even more, for example at least 12 or 18 months.

Heat treatment of the Packed food product with the intention to extend its shelf life can be suitably carried out by means of this method and under the conditions, described in more detail in International patent application WO98/16431, which is given here as a reference. The packaging container is placed in an autoclave and heated therein by means of the first circulating gaseous medium, for example hot water vapor, to a temperature which typically is in the range between 70 and 130C. After a predetermined amount of time at the chosen temperature the flow of the first gaseous environment cease. Then the packing container is cooled by the second circulating gaseous medium, for example cold air, and, finally, by circulating a liquid medium, for example cold water. Chilled packaging container is then removed from the autoclave for subsequent handling operations.

One variant of such autoclaves the tion is the so-called hot filling, which, in particular, is used for acidic foods. In this case, is a sterile filling product at least 80C. but below 100C, after which the autoclave is not required.

As, for example, soups, sauces and other ready-to-eat products can be Packed in such a packaging container, there is a clear need for technology that could provide the heat content in the microwave oven when it is still in open packaging container. The problem in achieving this of course is that the barrier layer of aluminum for gas prevents the passage of microwave radiation and therefore the packaging container of the gas barrier layer may not be used for heating in microwave ovens. Suppose that the prior art known about the possibility to use other gas barrier layers, for example layers based polymer satisfying the General requirements to the properties of the barriers. However, the main drawback of such a gas barrier layers based polymers is that they do not allow termopane by induction, which is provided a gas barrier layer of aluminum or other electrically conductive materials. Induction termopane well tested and works well, providing a very germ the ranks of the seal. Very good adhesion achieved in such seals, in addition, provides an extremely good otkryvaet to indicate holes, for example, in the form of a perforation for tear, i.e. without the use of scissors. Moreover, the aluminum layer is almost necessary if such perforations on the finished laminate shall be performed using laser methods of perforation and only through part of its thickness, and in this case, the laser perforating beam is delayed by a layer of aluminum, so this layer and the layer or layers placed inside an aluminum layer, not any punching.

Summing up, it would be thus desirable still be able to use aluminum, therefore it is a requirement that is contrary to the need to use other packaging materials that are resistant to microwave heating. In addition, it is desirable from the point of view of environmental protection to be able to reduce the use of aluminium in packaging materials.

It is already known from EP 0 378 880 B1 receipt of the packaging laminate on paper with strips of aluminum, the purpose of which is the possibility of obtaining thermosbaenacea by induction in his fields. However, the paper does not mention whether the amount of aluminum small enough to provide microwave heating of the laminate and allow you to plug the t of such a laminate made of him packing container, providing treatment in an autoclave or hot filling. Also, the document does not disclose how secured the opening of the container and the indication on the packaging laminate and packaging container produced from it. Furthermore, the method described for the deposition of aluminum strips on the laminate, has many flaws. The reason for this is that this method is periodic, in which the short strips are applied across the width of the tape laminate with equal distances between them, which correspond to the provisions, which will later be made transverse seals on the same line in a continuous process of forming-filling-sealing-based laminate, which is continuously formed in the form of a pipe filled with specified content, transversely sealed directly with the content and then cut into containers in the form of pillows, which are then formed, for example, in the form of masonry. In fact, this periodic method itself has shortcomings in relation to, for example, equipment, regulation and control. In addition, even if the aluminium strip, as indicated, covered with polyethylene on both sides, on the edges of the strips of aluminum exposed to food, which should be stored in the packaging container, and it is not permissible for p is the FL power.

Brief description of the invention

One object of the present invention therefore is to eliminate the above disadvantages and provide a method of making blanks of the packaging laminate of the type described in the introduction for a packaging container which can be heated with its contents in a microwave oven and which can preferably thermally treated in an autoclave in connection with its filling or filled with a hot product.

Another objective of the present invention is to provide a method of manufacturing such parts from the packaging laminate, which is due to the material conducting heat and electricity, such as aluminum, may be transversely to tighten very securely, tightly and securely. Moreover, procurement of packaging laminate should be provided with display openings, for example, in the form of a perforation in the area where the workpiece in its upper part must be sealed, and this indication hole provides a very good otkryvaet of the packaging container, which is made from billet.

Another objective of the present invention is the creation of this piece from the packaging laminate and packaging container produced from her, allowing his heated in microwave ovens and preferably also autocl viraemia or hot filling and which provide extremely dense, reliable and hermetic seal and an indication of the holes with a very good otkryvaetsja.

These and other objectives and advantages are achieved in accordance with the present invention, as described and defined in the attached claims.

Thus, according to the present invention proposes a method described in the introduction, the manufacture of wood from termopane and bend the packaging laminate for packaging container, resistant to microwave heating, a continuous strip of material that conducts heat and electricity, is applied in the direction of the processing machine on site over a specified surface of section top-to-top/bottom and in conjunction with step (a), in which is provided an elongated indication holes before or after applying the strips so that the display of the holes located in the region of the specified bar.

The term "resistant to microwave heating" means that the packing container after it has been opened, may be heated together with the content in a microwave oven without problems resulting from shielding or blocking of microwave radiation or sparks.

The fact that the strip may be provided continuously to incoming tape from the original laminate, gives the main advantage in processing. This is possible due to the orientation of just the wok, which stage (a) are thus still continuous with respect to one another and are "cross" on the ribbon so that the top of the workpiece occurs with the top or bottom of the other blanks in the form, as it is here called, "the interface of the top-to-top/bottom". Preferably, the blanks are located so that they meet the top-to-top in the form of a surface section of a top-to-top". This also means that the strip may have a double width, in this case, it is cut to a predetermined width when the laminate is cut into the workpiece on the stage (b). The top of the preform, provided by the strip of material which conducts heat and electricity, in the future when filling and sealing will be compacted by induction for the formation of the upper transverse seal which is durable, reliable and airtight.

In addition, due to the elongated device holes or display holes in strips at the upper end of the workpiece is a device hole is also easy to produce and provide high properties thanks to this strip, while the major part, preferably the main part of the strip and thereby the metal material will be removed from the packaging container when it is opened for subsequent placement in a microwave oven. As a result, in the packaging container remains such nathnac the proportion of metallic material, it does not prevent its heating in a microwave oven and not screens or blocks of microwave radiation, leaving so many metallic material that arcing does not occur.

In accordance with one variant of the present invention that this strip is formed of metal foil, preferably aluminum foil, and preferably has a thickness of between 6 and 20 microns. At least she is hardened properly with one side and preferably on both sides of the polymer reinforcing material, preferably polypropylene, polyamide or polyethylene terephthalate, but respectively using an adhesive plastic located between the metal foil and a polymeric reinforcing material. The strip may, for example, have a width of between 20 and 50 mm and it is applied so that the area of this strip is also provided upper ribbed fold, obtained in step (b), as will be described in more detail and explained in the description of the accompanying drawings. In this case, it should be noted that the width of the strips will depend on the size of the packaging container, which must be formed from the workpiece. Such packing size can be anything from, for example, 100, 125 or 200 ml to 1000, 1500 or 2000 ml, even if it is at all incompatible with microwave heating packaging containera is, this should be no more than 400 ml.

It should be understood that the width of the strips will be half the width described above, when the tape is cut on the workpiece at the interface of the top-to-top. If, on the other hand, is a surface section of a top-to-bottom, the strip may be positioned so that most of it will be placed within the upper edge of the workpiece, the top of which faces the surface of the partition.

In accordance with another variant of the invention the specified indication hole is provided with perforations, preferably by means of laser technology perforation or through mechanical technology perforation. If you are using laser technology perforation, it is particularly preferable to perform it after applying the strips, in this case, the strip functions as a means to delay the laser beams so that the perforation is only partially passes through the laminate. Preferably, the specified indicating holes entailed ensuring preferably continuous indication of the holes on the other side surface of the partition top-to-top, in this case, each display openings are preferably located more remotely from the specified interface the top-to-top, than from one of the longitudinal edges of the strips, and this longitudinal to the AI is on the same side surface of the partition top-to-top, as mentioned indication holes. On the other hand, when it comes to the interface of the top-to-bottom, the course will be provided with display openings as has just been described, only at the upper end of the workpiece, the top of which is directed to the surface of the partition top-to-bottom. When the laminate is cut into blanks, the upper end of each workpiece remains indication of the holes in the upper end of each of the workpiece within the scope of the strips. By placing the device hole is provided by removing a sufficient amount of the material strip/metal at the opening of the packaging container so that no problems with microwave heating.

Can be provided for different ways of applying the specified rectangle on the specified source laminate. In one first embodiment of the present invention this can be done so that the reinforcing material (if present) focuses directly on the original laminate is heated when the strip and the original laminate pressed to one another, for example, by crimping between the rollers. Heating, for example, can be carried out, for example, through induction, hot air, gas flame, ultrasound, etc.

In the second embodiment of the present invention pointed to by the I strip may be applied to the original laminate, in which polymer laminate material extruded as the first elongated layer between the said strip and the specified source laminate when pinning the strips and the source material to each other, for example, by crimping between the rollers. Such polymeric laminate material is preferably a polyolefin, such as polypropylene, and may, in one preferred embodiment, consist of hot melted glue. In this context, it is clear that the hot molten glue "extruded", even if it is pumped into the nozzle, and not otherwise supplied to the nozzle by means of the screw.

In accordance with another variant of the present invention the entire surface of the strip and its lower longitudinal edge, i.e. the one longitudinal edge, which extends for some distance on the workpiece is coated with a polymer material such as polypropylene, polyamide or most preferably hot melted glue. Such polymeric covering material will function as Thermopanel layer when the top is sealed in the area of the strip, and its lower longitudinal edge has a floor, and a metal foil will not come into contact with the contents of the packaging container formed from the blank and is filled with, for example, food. This application of a covering material that the same can be done in different ways. In accordance with the first embodiment of the invention the strip is covered once applied on the laminate or in connection with this, the second elongated layer of polymeric coating material with the specified coating material is preferably applied so that it also covered the longitudinal edges of the strips. In this case, the polymer laminate material may ekstrudirovaniya as that of the second elongated layer above the strips and firmly pressed into its position, for example, by crimping between the rollers. In accordance with the second embodiment of the invention it is provided the above-mentioned polymer reinforcing material at least on one side of the strip, so it sits on top of the longitudinal edges of the strip while the strip is applied to the specified source laminate so that this polymer reinforcing material is placed on the opposite side of the metal foil in relation to the original laminate, so that this polymer reinforcing material covers the longitudinal edge of the strip.

Sealing the area to the bottom transverse seal in a variant, where the first mentioned strip over the surface of the partition top-to-top, may, for example, be performed when the second continuous strip of material which conducts heat and electricity, is applied in the direction of the processing machine, the second region in the lower end of the workpiece, and the second strip is preferably narrower than the first mentioned strip, for example about 5-10 mm (in preparation). Other options for this second strips may be applicable as described above for the first mentioned strips to the top seal. However, also provides for the implementation of bottom sealing a completely different way, for example by ultrasound, pulse heating, hot air, etc.

The original laminate, which according to the invention is provided with a strip made of a material that conducts heat and electricity, can have a structure, which can vary within wide limits. However, the basic concept can, as they say, lies in the fact that the original laminate is covered with a given outer side in the depth provided by the band, includes sealed for liquid sealing layer, internal or bulk layer is preferably made of paper or cardboard, a gas barrier layer and impermeable to liquid covering layer, as well as possible intermediate binder layers. One advantage obtained from the present invention lies in the fact that it is not permeable to liquid covering layer on the inner side of the laminate can be made that is the more, than in other cases because it does not need to adapt to the transverse seals, but only for less critical longitudinal seals.

In accordance with the latest variant of the method according to the present invention specified procurement of packaging laminate is formed by folding after step (b) in the packing container, which is filled with food, sealed and autoclaved. In this case, the transverse seals preferably are induction heating. Where applicable, autoclaving can be waived or replace it with a hot filling.

The present invention also relates to the harvesting of Thermopanes and bend the packaging laminate for packaging container, resistant to microwave heating, and procurement of packaging laminate has an upper end, made with elongated display openings, a continuous strip of material which conducts heat and electricity, is provided on one side of the packaging laminate and the neighboring specified upper end so that it covers the specified indication hole.

In addition, the present invention relates to a packaging container, resistant to microwave heating and preferably autoclaved or hot filling and which is formed from such a C is cooking folding, filling and sealing.

Brief description of drawings

The present invention will be described in more detail below with reference to one preferred variant implementation, and with reference to the accompanying drawings, in which:

Figure 1 represents a portion of the continuous tape blanks of the packaging laminate, shown schematically, according to the present invention, including applied strips located, as you can see, across the tape;

Figure 2 is a cross-section along the line a-a of tape 1 is shown schematically in position without stripes;

Figure 3 is a transverse section on line-In tape 1 is shown schematically in position with a strip;

Figure 4 is a cross-section of the strips of material that conducts heat and electricity, with hardening material on both sides;

Figure 5 is a continuous ribbon of workpieces from the packaging laminate according to the invention, including applied strips, as it is visible from above;

6 represents one preferred process of applying strips of tape, shown schematically as it is seen from the side;

Fig.7 is a process of figure 6, as it is visible from above; and

Fig is a cross-section, shown schematically, of the material from the CSOs in the process, shown in Fig.6 and 7.

Detailed description of the accompanying drawings and the preferred embodiments of the invention

It should be noted that the present invention is not limited to the specific preferred options for implementation, which are shown in the figures, and numerous changes and modifications obvious to a person skilled in the art after reading the description, without departing from the concept of the invention as defined in the attached claims.

Thus, figure 1 shows a portion of the continuous tape 1 of workpieces from the packaging laminate according to the invention, including marked sealed strips 2', located, as you can see, across the tape.

Figure 2 shows that the original laminate, indicated overall by the reference position 10, has an inner or bulk layer 11 and outer, sealed and thermopane coatings 12 and 13 on both sides of the inner layer 11. The original laminate 10 also has a gas barrier 14 between the inner layer 11 and one sealed coating 12 and, moreover, additional sealed intermediate layer 15 may be located between the inner layer 11 and the gas barrier 14.

Binder layers 16A, 16b of a suitable adhesive may be provided at required locations between the just-described layers. Figure 2 p is the cauldron one such binder layers 16A sealed between the cover 12 and the gas barrier 14, and one bonding layer 16b between the gas barrier 14 and additional sealed intermediate layer 15.

External hermetic coating 13 on the other side of the inner layer 11 may be a decorative ornament of suitable inks for printing, which in turn protected by a transparent layer 17 deposited on the aforementioned decorative decorating pattern consisting of a suitable lacquer or other agent that protects the decorative decorating picture from external influence. It is also clear that decorating decorative pattern and the protective lacquer can be applied only after you have applied the strips 2.

The inner layer 11 may consist of any suitable rigid, but bendable material, but preferably it consists of paper or paperboard conventional packaging quality.

The outer sealed cover 13 may be made of plastic selected from the group essentially comprising polyethylene (PE), polypropylene (PP) and polyester (PEER) any quality or mixtures thereof. The thickness or the number of the outer sealed cover 13 can vary, but in General it is approximately between 25 to 45 g/m2.

Accordingly hermetic coating 12 may be composed of plastic, which is selected from the group essentially comprising polyethylene (PE), polypropylene bags, the Yong (PM), polyester (PEER) any quality and their copolymers. The thickness or quantity of the plastic coating 12 may vary, but in General it is approximately 25 to 35 g/m2.

The gas barrier layer 14 is made of a material that does not conduct heat and electricity, such as polyethylene terephthalate (PET), amorphous polyethylene terephthalate (APET films), cyclic olefin copolymers (CSO), polyamide (PA), amorphous polyamide (APA), liquid crystal polymers (ICP), copolymers of ethylene vinyl alcohol (SAWS) and polyvinyl alcohol (PVA), etilenovogo alcohol. It is possible that these materials may be combined with layers of SiOx or AlOx.

Suitable adhesives or binders binder layer/layers 16A, 16b for use in source laminate 10 are known in themselves in this field of technology, but especially preferred binder according to the invention is that which can be obtained from the Japanese company Mitsue under the trade name Admer (adhesive plastic).

Figure 3 source laminate 11, 12, 13, 14, 15, 16A, 16b, 17 is the same as figure 2, but sealed strip 2' is located on its inner side (see Figure 1). Sealed strip 2' includes a strip 2, which is formed from a foil of a material which conducts heat and electricity, preferably of metal fo is IGI and even more preferably of aluminum foil. The strip 2 has been bonded to the sealing cover 12 by a layer 18 of a polymeric material. Extreme, i.e. outside of the strip is a layer 19 of the polymer termopane material.

Figure 4 shows one example of the sealed strips 2' in cross section. Here the layers 18 and 19 were plotted as reinforcing layers on the strip 2 already before applying the strips to the original laminate. In the shown embodiment, both layers 18 and 19 extend for a short distance beyond the longitudinal edges 20 of the strip 2, so that its longitudinal edges are protected from contact with the food product, which shall be filled packaging container made from billet with a strip. Outside longitudinal edges 20 strips 2 layers 18 and 19 are soldered to one another. However, it is also clear that only the layer 19 extends essentially beyond the longitudinal edges 20 of the strips 2.

Figure 5 shows the tape from the continuous workpiece 50A, 50b according to the present invention, consisting of a packaging laminate comprising caused strips, visible from above. For purposes of illustration, in the lower part of the Figure is visible tape after bending, in its upper part shows the tape before bending. The dotted line 51 shows the surface section of the top-to-top for workpieces 50, i.e. that the workpiece 50A are located one after another along the direction of the machine processing the weave of the tape 1 in this surface of section 51, the top-to-top, moreover, the vertices of these workpieces 50A are located directly near the tops of the blanks 50b, which are also located one after another along the direction of the processing machine tape 1. Thus, the workpiece 50A and 50b are oriented so that their direction is top-to-bottom transversely relative to the direction of machining in the parallel stacks, where blanks are top-to-top in the surface section 51. Accordingly, the number of piles in the tape 1 is equally divided into two and, if there be more than two stacks, the lower blanks there are also bottom-to-bottom in the second surface section 52. The surface of the partition 51 and 52 also form a cut line along which the continuous workpiece will be cut off from one another.

The surface of section 51, the top-to-top is covered with a continuous strip 2 according to the invention, the strip extends over a continuous indication of 53 holes, preferably perforations on each side surface section 51, the top-to-top. It is clear that the display of the holes 53 may be provided before or after applying the strips to the tape 1. The strip 2 extends over the top ribbed bend 54 in the blanks 50A, 50b. This strip is covered with a protective layer of polymer material 19, which extends over the longitudinal edges 20 of the strips 2.

In the shown embodiment, assests the deposits in the second direction of the processing machine in the lower end of the workpiece 50A and 50b is the second continuous strip 55 of material, which conducts heat and electricity. The second strip 55 is narrower than the first mentioned strip 2. The second strip 55 is also covered with a protective layer of polymer material 56, which is located over the longitudinal edges of the strips 57 55.

The area of the strips 2 and 55 will form a sealing region for cross-junctions, when the workpiece 50A and 50b are formed, filled and sealed so that the formed packing containers.

Figure 6 schematically illustrates one preferred process of applying strips 2 to tape 1, as it is visible from the side. Tape 1, consisting of the original laminate, moves to abiemnom the gap between the cooling roller 60 and pressure roller 61. The pump 62 for hot molten glue gives hot molten adhesive to the first nozzle 63 for hot molten adhesive and the second nozzle 64 for hot melted glue. The strip 2 is fed from the store of the stand 65. The first nozzle 63 hot melted glue causes the strip of hot molten adhesive between the strip 1 and strip 2 and the second nozzle 64 hot melted glue causes a wider strip of hot melted glue on the strip 2 and at its longitudinal edges. All this is finally merged in the subsequent crimping between the rollers. Tape 1 with a printed stripe goes from crimping and served on the equipment DS bending and cutting into individual blanks. It is clear that additional processing steps may occur between the crimping and equipment for bending and cutting, such as creating a zone of holes and/or printing a decorative pattern, and a protective lacquer, if these additional steps are not executed in a different position. However, it is preferable that the material of the tape strips are not required clotting before it is cut into blanks, as strips can give undesirable accumulation of material in the relevant provisions on the roll.

7 shows the process in accordance with 6, as it is visible from above. Here you can see three strips 2 are applied across the width of the tape.

On Fig schematically shows a cross section of the material strip obtained after carrying out processes 6 and 7 and consists of the original laminate strips 2 and polymer material 18,19, sealing strips 2.

The present invention is not limited to the described variants, but may be changed without departing from the scope of the applied claims. In particular, it should be noted that the layered structure of the original laminate can be changed within wide limits, which are disclosed in the foregoing description, just leading examples of possible embodiments.

1. A method of manufacturing a workpiece (50a, 50b) of thermospan the CSOs and folding of the packaging laminate for packaging container, resistant to microwave heating, comprising the steps:
(a) feeding a continuous strip (1) from the original laminate (10) in a conversion line for the packaging laminate so that a continuous blanks for packaging containers are oriented with their direction of top-to-bottom across the direction of machine processing of the conversion line and the boundary surface (51) top-to-top/bottom,
(b) providing a source of a laminate (10) bending and cutting into shapes (50a, 50b) of the packaging laminate,
characterized in that the continuous strip (2) from a material that conducts heat and electricity, is applied in the direction of the processing machine on one area over the surface of section (51) top-to-top/bottom and in conjunction with step (a), provide an extended display (53) holes before or after the application of the strips (2) so that the display of the holes is located within the area of the strip.

2. The method according to claim 1, characterized in that the strip (2) made of a metal foil, preferably aluminum foil, and preferably has a thickness of between 6 and 20 microns and preferably reinforce at least one side of the polymeric reinforcing material (18, 19).

3. The method according to claim 1, characterized in that the strip (2) has a width of between 20 and 50 mm, and it is applied so that the upper, ribbed fold (54), which provides step (b), RA is placed within the area of the strip.

4. The method according to claim 1, characterized in that the display (53) hole provide in the form of perforations, preferably by laser perforation or through technology mechanical perforation.

5. The method according to claim 1, characterized in that the display (53) holes provide more remotely from the surface section (51) top-to-top/bottom than from the longitudinal edge (20) of the strips (2), wherein the longitudinal edge (20) is located on the same side surface of the partition top-to-top/bottom, as and indication of the holes.

6. The method according to claim 2, characterized in that the strip (2) is applied to the original laminate (10), the polymeric reinforcing material (18) is oriented directly opposite the original laminate and heated together with the strip and the original laminate, when they are pressed to each other.

7. The method according to claim 1, characterized in that the strip (2) is applied to the original laminate (10), a polymer laminate material (18) ekstragiruyut as the first elongated layer between the strip (2) and the original laminate (10) together with the strip and the original laminate, when they are pressed to each other.

8. The method according to claim 1, characterized in that the strip (2) once in the application cover the second elongated layer (19) of the polymeric coating material, and coating material is preferably applied so that it also covers food is performance communications edge (20) strips.

9. The method according to claim 2, characterized in that the polymer reinforcing material (19), at least on one side of the strip (2) passes over the longitudinal edges (20) of the strip while the strip is applied to the original laminate (10) so that this polymer reinforcing material (19) is located on the opposite side of the strips with respect to the original laminate and so that this polymer reinforcing material covers the longitudinal edges (20) strips.

10. The method according to claim 1, characterized in that the surface section (51) top-to-top/bottom surface of section is the top-to-top, the second continuous strip (55) from a material that conducts heat and electricity, is applied in the direction of the processing machine in the second region on the lower end of the blanks (50a, 50b), and the second strip is preferably narrower than the first strip (2).

11. The method according to claim 1, characterized in that the workpiece (50a, 50b) of the packaging laminate after the step (b) is formed by folding the packing container, which is filled with food, sealed and sterilized.

12. The method according to claim 1, characterized in that the workpiece (50a, 50b) of the packaging laminate after the step (b) is formed by folding the packing container, which is filled with food product in a hot state when at least 80C, but below 100C, and then sealed.

13. The method according to claim 1, distinguished by the different topics the original laminate (10) provide a structure that is visible from a given outer side of the laminate and to its inner side, provided with a strip, comprising a hermetic sealing layer (13), the inner layer (11) is preferably made of paper or cardboard, a gas barrier layer (14) and sealed covering layer (12), as well as possible intermediate binder layers (16a, 16b).

14. Procurement (50a, 50b) of Thermopanes and bend the packaging laminate for packaging container, resistant to microwave heating, the workpiece from the packing laminate has an upper end, made with elongated display (53) holes, characterized in that the continuous strip (2) from a material that conducts heat and electricity, is located on one side of the packaging laminate and near the upper end so that it covers the display of the hole.

15. Procurement 14, characterized in that the strip (2) is made of metal foil, preferably aluminum foil, and the metal foil preferably has a thickness of between 6 and 20 microns and a width between 10 and 25 mm

16. Procurement 14, characterized in that the strip (2) also covers the upper, ribbed fold (54) near the upper end.

17. Procurement 14, characterized in that the display (53) of the hole consists of perforation, which predpochtitel is but runs the entire width of the workpiece (50a, 50b).

18. Procurement 14, characterized in that the display (53) holes located more remotely from the upper end than the lower longitudinal edges (20) of the strips (2).

19. Procurement 14, wherein the first elongated layer (18) of polymeric material located between the strip (2) and others (10) the packaging laminate, and the first elongated layer is preferably as wide as the strip, and links between the strip and the packing laminate.

20. Procurement 14, wherein is provided a second elongated layer (19) of the polymer material, made with the possibility of covering strips (2) and preferably pass at a small distance above the bottom longitudinal edge (20) strips.

21. Procurement 14, characterized in that the second continuous strip (55) from a material that conducts heat and electricity, is located at the lower end of the workpiece (50a, 50b), and the second strip (55) is preferably narrower than the first strip (2).

22. Procurement 14, characterized in that the packaging laminate is a structure that is visible from a given outer side of the laminate and to its inner side, provided with a strip, comprising a hermetic sealing layer (13), the inner layer (11) is preferably made of paper or paperboard, gas b is Remy layer (14) and sealed covering layer (12), as well as possible intermediate binder layers (16a, 16b).

23. The packing container, resistant to microwave heating, and preferably with the possibility of sterilization or filling the product in a hot condition, characterized in that it is formed by folding with the possibility of filling and sealing of the workpiece (50a, 50b) on any of PP-22.



 

Same patents:

FIELD: packing industry.

SUBSTANCE: laminated material comprises a substrate layer and an additive transfer layer. The additive transfer layer contains thermoplastic polymer and an additive which is water-soluble granules of a colouring agent, flavour additive and aromatiser. The additive transfer layer is contacting the food product subject to packing.

EFFECT: package comprising such laminated material gives the packed product improved taste, aroma or colour when being heated or cooked.

22 cl, 12 ex, 4 tbl, 8 dwg

FIELD: packing industry.

SUBSTANCE: casing is produced by the coextrusion of at least two layers including the outer layer (Z). At least one layer which is not an outer one (Z) contains more than 50 wt % of thermoplastic components on the (co)polyamide(s) basis. The outer layer (Z) contains more than 50 wt % of thermoplastic components and inorganic particles distributed in them with at least part of the particles having the diametre of the equivalent sphere exceeding 20 mcm. At least one of the layers (not the outer one (Z)) performs the carrying function.

EFFECT: as per their appearance and roughness the obtained casings for food products are similar to the collagen, protein, reinforced with fibers cellulose and natural casings.

14 cl, 1 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: film contains a primary layer (A) made from polyolefin foam, containing 0.5 to 25 wt % nucleating agent, layer (B) based on the same polyolefin as the primary layer, an optional adhesive layer (C), barrier layer (D) optionally impermeable for gases and/or smell, adhesive layer (E) and a thermosealing and/or laminated surface layer (F). Total thickness of layers (A) and (B) lies between 0.5 and 2 mm, and thickness of layer (B) ranges from 1/6 to 1/2 of thickness of layer (A). The said multilayer film is suitable for thermoshaping on shaping-packaging-thermo welding machines.

EFFECT: product has good mechanical properties.

17 cl, 1 ex, 2 tbl

FIELD: chemistry; packing.

SUBSTANCE: oxygen-absorptive packing material is intended for packing of food products. Material includes solid layer of base from paper, oxygen-absorbing composition, placed on at least one side of base layer and film layer from polypropylene film, placed on oxygen-absorbing layer. Oxygen-absorbing composition includes adhesive emulsion and suspended in it absorbent of oxygen, which contains electrolytically restored iron and salt as electrolyte. One of said base layers and said film layer can have printed letters for provision of information, relating to packed product.

EFFECT: prevention of decomposition, spoiling and oxidation of food products.

13 cl, 12 ex, 1 tbl, 6 dwg

FIELD: packing industry.

SUBSTANCE: invention relates to technology of obtaining packing materials, in particular to laminates for additives transferring, acceptable for packing food product, which is boiled in packing, additives from laminate passing from laminate into food product. Laminate contains substrate and layer for additive transferring. Layer for additive transferring consists of water-insoluble thermoplastic polymer, agent increasing polymer impact viscosity and additive granules which contain coloring substance, flavour additive and aromatiser. Agent increasing polymer impact viscosity is contained in mixture with water-insoluble thermoplastic polymer. In packing product laminate is connected to itself or to other element of packing product-packet, bag, lid, etc.

EFFECT: invention allows to improve appearance of food product after transferring food additive into food product, ensures more even distribution of food additive on or in food product.

28 cl, 10 dwg, 10 tbl, 69 ex

FIELD: food industry.

SUBSTANCE: invention is related to multilayered plastic sheet used for food packaging It has some areas provided with adhesive properties used for one-sided thermo connection on the outside of the film and two-sided thermo connection, in other words thermo connection on the outside and inside of the film.

EFFECT: film produced has excellent adhesive properties and prevents patching of layers while rolling.

10 cl, 1 dwg

FIELD: metallurgy.

SUBSTANCE: it is implemented aluminium reactionary evaporation and reactionary gas is fed into coating spraying machine on belt padding with receiving of coating from aluminium oxide. Before plating made of aluminium oxide on padding by magnetron sputtering it is applied short close layer of metal or metal oxide.

EFFECT: there are received transparent barrier coatings without high technological expenditures.

18 cl, 1 ex

FIELD: packing industry.

SUBSTANCE: invention relates to production of ecologically safe packages and refers to a cigarette pack comprising a closing and opening outer box and an inner packing placed inside the outer box. The inner packing encloses a set of rod-like smoking products and an inner wrapping which covers this set. The inner wrapping comprises the first paper layer forming one inner wrapping surface, the second paper layer forming the other inner wrapping surface and a moisture-proof layer between the first and the second paper layers. The moisture-proof layer contains solid paraffin as a basic component and its thickness is enough to provide for the first and second paper layers to be glued together. Wrapping paper as well as the method and machine for its production are proposed.

EFFECT: increased moisture resistance, flavour keeping and improved biological decomposition.

20 cl, 9 dwg

FIELD: packaging.

SUBSTANCE: coating film for children-protected and old-people-friendly blister packs has a hot shaped or cold shaped substrate (blister) and is designed for packing drugs and medical products. The coating film includes 5 to 30-mcm thick aluminum foil, which is either uncovered on one - first - side or covered with protective varnish applied with mass flowrate from 0.1 to 10 g/m2, or is lined with paper of a density from 17 to 60 g/m2 or 5 to 15-mcm polyester film. On the other - second- side destined for heat sealing with the blister pack substrate, the coating film is lined with uniaxially or biaxially stretched polymer film made of either 10 to 40-mcm polyvinyldichloride (PVDC) or 6 to 35-mcm polypropylene (PP) or 5 to 15-mcm polyester resin or 8 to 76-mcm polychlorotrifluoroethylene (PCTFE) or 10 to 40-mcm cycloolefine copolymer. The given coating film is used for blister packs.

EFFECT: elective protection of blister packs against children and convenient opening by old people by pressing.

19 cl, 1 tbl

FIELD: transportation; packing.

SUBSTANCE: composite sheet material includes sheet of transparent amorphous thermoplastic material with or without toning. Face side of material is intended for contact with food, rear side has adhesive solid or perforated decorative material layer made of thermoplastic paints. This layer may be monocolour or multicolour. Rear side layer of decorative material and also rear side of said sheet in places of orifices is covered by adhesive layer of aluminium.

EFFECT: enhancement of aesthetic appeal of packaged food with package made of thermoplastic material securing high ecological safety.

3 dwg

FIELD: chemistry.

SUBSTANCE: protective coating system for protecting an object, containing metal, when the system is applied on the object, contains a coating with a non-porous layer, permeable to water vapour and the source of the corrosion inhibitor. Protective coating system for protecting an object, containing metal, when the system is applied on the object, contains a coating, including the first layer permeable to water vapour, and the second layer containing a porous material and the source of the corrosion inhibitor. Protective coating system for protecting a metallic object, when the system is applied on the object, contains a coating, including the first layer which has a first and second facial sides and containing a material, which absorbs moisture, and the second layer which is liquid-tight and the source corrosion inhibitor. Panel for the protective covering of a metal object contains a first layer with super-adsorbent, having the first and second facial sides, and the second layer liquid-tight and having peripheral edges, and binding next to the peripheral edges. Method of inhibiting corrosion of a metallic object includes providing a coating, which has a first layer with first and second facial sides containing an absorbent material, a second layer, liquid-tight, and a coating for the object. Method of inhibiting corrosion of a metallic object includes the creation of a coating, having a non-porous layer, permeable to water vapour, applying the coating on the object and administering the inhibitor to the micro-environment of the object.

EFFECT: improving efficiency of protection against the action of the environment.

15 cl, 6 tbl, 15 dwg, 5 ex

The invention relates to devices for preventing the occurrence of pin holes in the manufacture of laminates of nonwovens and plastic films, and laminates made with these devices

FIELD: transportation.

SUBSTANCE: invention relates to induction method and devices for sealing tubular package seams. The proposed method consists in making the first tubular part of the package from a sheet made from a thermo plastically coated packing material containing, at least, one layer of induction-heated material. Here, the package first part has sealed first joint between two opposite edge sheet sections. Then, of first and second parts the package are jointed together by forming the second joint between the package first and second parts so that both said joint intersect. Additionally, a means for induction heating is arranged including, at least, two conductors running parallel along the second joint to seal the said second joint by feeding induction current from the induction heating means. Note here, that induction current runs in the conductor along the second joint in one direction, while in the other conductor the said current runs in opposite direction along the said second joint. Note also that every of the aforesaid, at least, two conductors seal one intermediate joint of the second joint.

EFFECT: induced heating current runs all along the entire joint without dispersion of induced current to allow sealed and durable joint.

31 cl, 40 dwg

FIELD: transportation.

SUBSTANCE: invention relates to induction method and devices for sealing tubular package seams. The proposed method consists in making the first tubular part of the package from a sheet made from a thermo plastically coated packing material containing, at least, one layer of induction-heated material. Here, the package first part has sealed first joint between two opposite edge sheet sections. Then, of first and second parts the package are jointed together by forming the second joint between the package first and second parts so that both said joint intersect. Additionally, a means for induction heating is arranged including, at least, two conductors running parallel along the second joint to seal the said second joint by feeding induction current from the induction heating means. Note here, that induction current runs in the conductor along the second joint in one direction, while in the other conductor the said current runs in opposite direction along the said second joint. Note also that every of the aforesaid, at least, two conductors seal one intermediate joint of the second joint.

EFFECT: induced heating current runs all along the entire joint without dispersion of induced current to allow sealed and durable joint.

31 cl, 40 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to fabrication of workpiece from thermally sealed and foldable laminate for packing container resisting SHF heating. Endless ribbon (1) of starting laminate (10) moves in packing laminate conversion line. Endless workpieces for aforesaid packing containers are directed from top to bottom and across machine processing direction in conversion line and top-to-bottom interface (51). Starting laminate (10) is made with bents and cuts for workpieces (50a, 50b). Endless ribbon (2) from heat and electrically conducting material is applied along machine processing direction above aforesaid interface (51) and in combination with stage (a). Elongated indication (53) of hole is effected prior to or after applying ribbon (2). Hole indicator stays within the limits of aforesaid ribbon. Packing container is formed by folding, is filled and sealed by workpiece (50a, 50b).

EFFECT: higher density, reliability and tightness.

23 cl, 8 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to method and device of welding multi-layer packing material by magnetic hysteresis. Invention covers the device to weld first multi-layer packing material, a laminate, to second packing laminate. At least first laminate comprises one layer of magnetisable particles and layer to be welded thereto. Proposed device comprises appliance to apply alternating magnetic field to laminates in welding zone so that the main direction of magnetic field lines is, in fact, parallel to the plane that forms first multi-layer packing material. Thus, reduced are losses from magnetic hysteresis in laminate containing magnetisable particles and heat generation is ensured for melting layer to be welded in welding zone. Proposed device comprises also appliance to apply sealing pressure to first and second laminates to press and weld them together in welding zone.

EFFECT: welding packing laminates in fast-operation packing machine, ruling out overheating of laminates, reduced magnetic field power and higher system efficiency.

18 cl, 10 dwg

FIELD: process engineering.

SUBSTANCE: inductive heat sealing device 15 fed in first direction comprises inductors 20, 21 to interact with packing material by, at least, one active surface 25, 26. Note here that shell 24 is made from heat conductive material and comprises inductors 20, 21 and insert 30 made of magnetic material to concentrate flux and arranged in said shell 24. Sealing device incorporates also element 23 made of plastic and including, at least, first part 19 arranged in first direction A between shell 24 and insert 20 so that it is surrounded, at least partially, by shell 24.

EFFECT: ruled out fractures in shell.

18 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of elastic tubular cases from polymers. Proposed method comprises the stages that follow: forming of tape 1 around sealing rod, bringing of tape ends 3, 4 in contact, forming sealing zone 5 by heating, applying the pressure and cooling said tape ends 3, 4. Note here that preliminary improvement of tubular case roundness is ensured by drawing the sealing zone 5. Note also that further improvement of tubular case roundness is performed by heating the tape 1 beyond aforesaid sealing zone 5.

EFFECT: improvement of tubular case roundness.

15 cl, 4 dwg

FIELD: packaging industry.

SUBSTANCE: invention relates to production of package. Method of producing package includes a connection along first and second parts of material, in which at least first part of material consists of laminate type containing mechanically stabilising layer, an electroconductive layer and welded layer in which mechanically stabilising layer is formed a cardboard material, in which first part of material is made so that welded layer can be melted energy supply in an electroconductive layer and in which connection includes a step of welded layer is pressed to second part of material, where energy is supplied in an electroconductive layer, method is characterised by that supply of energy per unit time, that is, power supply, in an electroconductive layer is changed during period of time, in which energy is supplied to electroconductive layer, where power supply at end of supply period is less than at earlier stage, where power supply has a maximum or almost maximum allowable value during first phase of period of supply, and where first phase is at least 40 % of period of supply.

EFFECT: technical result is method is especially suitable for systems with thick welded layer, possibility of optimisation of power, reduced time and providing a competitive rate of process.

16 cl

FIELD: chemistry.

SUBSTANCE: protective coating system for protecting an object, containing metal, when the system is applied on the object, contains a coating with a non-porous layer, permeable to water vapour and the source of the corrosion inhibitor. Protective coating system for protecting an object, containing metal, when the system is applied on the object, contains a coating, including the first layer permeable to water vapour, and the second layer containing a porous material and the source of the corrosion inhibitor. Protective coating system for protecting a metallic object, when the system is applied on the object, contains a coating, including the first layer which has a first and second facial sides and containing a material, which absorbs moisture, and the second layer which is liquid-tight and the source corrosion inhibitor. Panel for the protective covering of a metal object contains a first layer with super-adsorbent, having the first and second facial sides, and the second layer liquid-tight and having peripheral edges, and binding next to the peripheral edges. Method of inhibiting corrosion of a metallic object includes providing a coating, which has a first layer with first and second facial sides containing an absorbent material, a second layer, liquid-tight, and a coating for the object. Method of inhibiting corrosion of a metallic object includes the creation of a coating, having a non-porous layer, permeable to water vapour, applying the coating on the object and administering the inhibitor to the micro-environment of the object.

EFFECT: improving efficiency of protection against the action of the environment.

15 cl, 6 tbl, 15 dwg, 5 ex

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