Layered material and method of producing said material

FIELD: chemistry.

SUBSTANCE: invention relates to layered material comprising an inner layer of aluminium foil, a paper middle layer and an outer layer of aluminium foil. The inner layer of aluminium foil and the middle layer are then laminated using a method selected from adhesive lamination with polyutherane, polyvinyl acetate and an acrylic adhesive, and extrusion lamination with polyethylene; and the inner layer of aluminium foil and the paper middle layer are then hardened. The paper middle layer and the outer layer of aluminium foil are laminated using a method selected from adhesive lamination with polyurethane, polyvinyl acetate and an acrylic adhesive, and extrusion lamination with polyethylene. The inner layer of aluminium foil, the paper middle layer and the inner layer of aluminium foil are then hardened.

EFFECT: while providing the given barrier properties, the obtained material enables to withstand various manufacturing and processing conditions to which the packaging is subjected.

14 cl, 2 dwg

 

The scope of the invention

The present invention relates to a new layered material.

The level of technology

When packaging certain products, such as foods, it is highly desirable to impede or prevent the passage of oxygen and/or water vapor through packaging. Despite the fact that the penetration of oxygen or water vapor does not necessarily lead to spoilage of the product, product quality and shelf life during storage of the product may deteriorate when exposed to these substances.

Packaging containers of various shapes and sizes often use 100% aluminum seals to protect the products inside the container from oxygen or water vapor. These seals are often injected between the container and any cover. In other configurations, aluminum seal may be the only cover that has a container.

Seals made of aluminum, are often chosen on the basis of the high barrier properties of aluminum. The effectiveness of these barriers depends on the type of material used and the thickness of the barrier. For example, a layer of 100% aluminum foil having a thickness of 0.001 inch is impervious to moisture and oxygen, and a layer of 100% aluminum foil having a thickness of 0.00035 inch has a transmission rate of water vapor 0.02 grams or less per 100 square the inch.

However, because of the rising cost of aluminum, there is a need to use alternative membranes, cheaper than aluminum, but still have the necessary barrier properties. In addition, the high thickness of the aluminum used in the known membranes, create some risk for the consumer, when the consumer pierces the seal by hand. In particular, the sharp edges of the aluminum surrounding the puncture site may cause scratches or cut your hand. Attempts to replace the 100% aluminum seals cheaper seals without aluminum had limited success. One reason for this is that in addition to the necessary barrier properties of the replacement material must withstand the various modes of production and processing, which are containers.

The invention

In connection with the foregoing the present invention is directed to providing a new method of manufacturing the layered material. The method includes the following operations: (1) the use of the inner layer of aluminum foil, paper middle layer and outer layer of aluminum foil; (2) laminating an inner layer of aluminum foil middle layer using adhesive lamination with polyurethane, polyvinyl acetate or acrylic adhesive type, or by extrusion glossy is polyethylene; (3) curing the inner and middle layers; (4) laminating the middle layer and the outer layer using adhesive lamination with polyurethane, polyvinyl acetate or acrylic adhesive type, or by extrusion lamination with polyethylene; and (5) curing the inner, middle and outer layers.

In the first embodiment, the method involves (1) the use of the inner layer of aluminum foil, paper middle layer and outer layer of aluminum foil; (2) laminating an inner layer of aluminum foil middle layer using adhesive laminating a polyvinyl acetate; (3) curing the inner and middle layers; (4) laminating the middle layer and the outer layer by means of extrusion lamination with polyethylene; and (5) curing the inner, middle and outer layers.

In another aspect the invention is directed to the creation of new layered material. Layered material includes an inner layer of aluminum foil and an inner layer connected with the first side of the middle paper layer. The middle layer is connected to the second side with an outer layer of aluminum foil. The inner and outer layers associated with the first and second sides of the middle layer using adhesive lamination with polyurethane, polyvinyl acetate or acrylic adhesive type, or using extras the traditional laminating polyethylene.

In another embodiment, the layered material has an internal layer of aluminum foil, and this internal layer is connected with the first side of the middle paper layer. The middle layer is connected to the second side with an outer layer of aluminum foil. The inner layer is connected with the middle layer using adhesive laminating a polyvinyl acetate, and the middle layer is connected to the outer layer by means of extrusion lamination with polyethylene.

Additionally, in accordance with one option, there is a layered material that contains an inner layer of aluminum foil that is associated with the first side of the middle layer of plastic film. The middle layer is connected to the second side with an outer layer of aluminum foil. The inner and outer layers associated with the first and second sides of the middle layer using adhesive lamination with polyurethane, polyvinyl acetate or acrylic adhesive type, or by extrusion lamination with polyethylene.

Brief description of drawings

Figure 1 shows the increasing cross section of a variant of the layered material in accordance with the present invention.

Figure 2 shows increasing cross-section of an alternative layered material in accordance with the present invention.

A detailed description of the preferred is the option of carrying out the invention

Next will be described variants of the invention, one or more examples of which are given below. Each example is illustrative and not restrictive. Specialists in this field can make various modifications of the present invention, without departing from the scope and essence of the present invention. For example, the features described as part of one embodiment can be used in another embodiment to get another option.

Thus, it is assumed that the present invention covers all such modifications and variations that fall within the scope of the claims and its equivalents. All other objects, features and aspects of the present invention are disclosed in the following detailed description of the invention. It should be borne in mind that the above description is only exemplary of the options are not intended to limit the broader aspects of the present invention.

In the first variant of the layered material has an internal layer of aluminum foil, and this internal layer is connected with the first side of the middle paper layer. Used here, the terms "inner layer or inner layer of aluminum foil" is defined as the layer closest to the product. Thus, if a laminate is used for formovani the container or package, or is welded with the formation of the container, the inner layer of aluminum foil is a layer closest to the inner surface of the container or package, or the layer closest to the product.

The middle layer is connected to the second side with an outer layer of aluminum foil. Used here, the terms "outer layer or outer layer of aluminum foil" is defined as a layer located farthest away from the product. Thus, if a laminated material used for forming the container or package, or welded with the formation of the container, the outer layer of aluminum foil is a layer located outside of the container or package, or a layer located farthest away from the product.

In the first embodiment, the inner and outer layers associated with the first and second sides of the middle layer using adhesive lamination with polyurethane, polyvinyl acetate or acrylic adhesive type, or by extrusion lamination with polyethylene.

In accordance with another variant of the invention the inner layer is connected with the middle layer using adhesive laminating a polyvinyl acetate. In accordance with another variant of the middle layer is connected to the outer layer by means of extrusion lamination with polyethylene. In specific valentinerne layer is connected with the middle layer using adhesive laminating a polyvinyl acetate, and the middle layer is connected to the outer layer by means of extrusion lamination with polyethylene.

In accordance with some of the options for the inner layer of aluminum foil can have a thickness in the range of approximately from 12 to 45 μm. In other embodiments, the inner layer of aluminum foil can have a thickness in the range of approximately 15 to 30 μm. In a specific embodiment, the inner layer of aluminum foil can have a thickness of about 20 microns.

In accordance with some options paper middle layer may have a specific gravity in the range of approximately from 10 to 70 grams per square meter (gsm). In accordance with some other options paper middle layer may have a specific gravity in the range of approximately from 20 to 60 gsm. In accordance with another alternative paper the middle layer may have a specific weight of approximately from 30 to 50 gsm. In a specific embodiment, the paper medium layer may have a specific weight of about 40 gsm. The paper thickness of the middle layer should be sufficient to handle layered material without cracking or buckling of the layers. The paper may be a paper of any known type. In a specific embodiment, the paper is processed on a machine glazed paper.

In accordance with one variant of the invention, the middle layer of mo is et to contain a film of plastic instead of paper. The film thickness of the plastic must be sufficient so that you can handle layered material without cracking or buckling of the layers. The film of plastic material may be a film of plastic material of any known type. In a specific embodiment, the film of plastic material comprises a gear polyester.

In accordance with some of the options for the outer layer of aluminum foil can have a thickness in the range of approximately from 12 to 45 μm. In other embodiments, the outer layer of aluminum foil can have a thickness in the range of approximately 15 to 30 μm. In a specific embodiment, the outer layer of aluminum foil can have a thickness of about 20 microns.

It is not necessary that the inner and outer aluminum layers have the same thickness. However, the inner and outer aluminum layers should be thick enough to avoid the formation of micro-holes (pinholes) in the barrier layers of the layered material. Aluminum foil, which is used in accordance with the present invention, can be made of aluminum foil of any known type. In accordance with some options aluminum foil may be mild, tempered or annealed. In specific embodiments, the inner and/or outer layers of aluminum foil have one shiny side and one matte side is well. Foil inner and outer layers is not necessarily the same.

In accordance with some of the options for the middle layer is connected with the internal layer on its shiny side. In other embodiments, the middle layer is connected with the internal layer at its frosted side. Similarly, according to some variants, the middle layer is connected with the outer layer on its shiny side. In other embodiments, the middle layer is connected to the outer layer at its frosted side.

In accordance with a variant of the present invention the inner and middle layers can be joined together using adhesive lamination with polyurethane, polyvinyl acetate or acrylic adhesive type, or using extrusion lamination with polyethylene.

In accordance with one variant of the present invention the polyvinyl acetate can be used for lamination of the inner and middle layers. In some embodiments, can be used a polyvinyl acetate water-based. In a specific embodiment, the polyvinyl acetate may be applied directly on the frosted side of the inner layer of aluminum foil, which then comes in contact with the paper medium layer.

In accordance with another variant of the present invention, the polyurethane can be used for glossy the inner and middle layers. In some embodiments, can be used polyurethane water-based, medium-range adhesive solvent-based and polyurethane, or the adhesive is a hot system without solvent. In a specific embodiment, the polyurethane can be applied directly on the frosted side of the inner layer of aluminum foil, which then comes in contact with the paper medium layer. In this embodiment, the polyurethane may be applied while it is still wet. As paper middle layer is porous and permeable, available in adhesive water can seep through the paper layer.

In the first variant associated inner and middle layers then utverjdayut. Used here, the terms "cure", "cured" or "cured" can refer to any process that leads to hardening of the polymer material by cross-linking of polymer chains, including (but without limitation) to the use of chemical additives, thermal radiation, ultraviolet radiation or heat. In a specific embodiment, for curing of layers can be used in the oven. Curing may also be achieved by keeping the related layers at a given temperature and humidity.

In accordance with some options after curing, the laminate is maintained at a temperature of the environment is in a period of time at least 48 hours, while the middle layer is not laminorul outer layer.

In the first embodiment, the middle layer may be laminated aluminum outer layer using adhesive lamination with polyurethane, polyvinyl acetate or acrylic adhesive type, or using extrusion lamination with polyethylene. In a specific embodiment, the lamination middle layer outer layer can be made by extrusion lamination with polyethylene. According to some variants of the polyethylene is melted polymer.

In some embodiments, extrusion lamination can also be made using low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), copolymer of polyethylene, ethylene acrylic acid (EAA)or ethylene and methacrylic acid (EMAA), or a ternary copolymer of polyethylene, EAA or EMAA, and each such component is a molten polymer.

In specific embodiments, the molten polymer is injected directly between the middle layer of paper and shiny side of the aluminum outer layer. A layer of molten polymer may have a thickness of, for example, approximately 10 to 20 μm. In a specific embodiment, the layer of molten polymer has a thickness of about mm.

In some embodiments, after the connection of the middle layer and the outer layer, utverjdayut the entire laminate. Curing after surgery final lamination may be achieved using any known process. However, in a specific embodiment, the curing is carried out by means of thermal radiation, due to the use of the oven or by exposure at a given temperature and humidity. In the first embodiment, after curing of the laminate, it is left at ambient temperature for at least 48 hours before further processing.

In some embodiments of the invention the open surface of the laminated aluminum layers can be covered with a sliding cover. In some embodiments, a sliding coating can be any known moving floor. In a specific embodiment, a sliding coating can be surfacing on the basis of nitrocellulose-based or vinyl copolymer. The coating performs the function of varnish, protecting the surface of the aluminum from scratches. Optionally, the coating may be applied to exposed surfaces of both laminated inner and outer layers of aluminum foil, using any known technology.

Layered material in accordance with the present invention can be used is to form a packing or sealing the package, containing any product that requires the use of a barrier against moisture and/or oxygen. For example, a laminate may be used for sealing the mouth of the container, jar or wide-mouthed vessel. In the first embodiment, a laminated material used for packaging food products, pharmaceutical products, industrial goods and agricultural products. Solid, powder or liquid products can be Packed in accordance with the present invention.

In some embodiments, the layered material in accordance with the present invention is used for sealing the container that holds the food. In a specific embodiment, the layered material can be used for sealing the container that holds the baby infant formula, dietary Supplement, Supplement breast milk or product for children. The layered material may optionally be connected to the container. For example, a laminate may be applied to the container in the form of sriramulu (peelable seals, with the formation of the easy-open seal or easily sriramulu seal.

In a specific embodiment, the layered material in accordance with the present invention is used for the manufacture of the membrane, which is established between the friction ring and the hub market the most important of the container cover. Containers having lever cover, which is also called penny (penny) lever cap, pressed cover or with a friction fit lid, typically have a Cabinet element, a closed bottom and having a hole at the top. Layered material in accordance with the present invention can be compacted on top of the container and then introduced into the inside of the peripheral ring, which is also called a friction ring which is mounted on the upper part of the container and seal it. Peripheral ring serves for reception of a cap in the form of a tube. The proposed layered material can withstand various processing modes, which are used for the manufacture of node lever cover, such as stamping and rolling.

When used in combination with the node lever cover the layered material in accordance with the present invention, the consumer often manually removes layered material due to its perforation or cutting and removal from the container. The use of 100% aluminum foil in such use often leads to getting shavings of aluminum in the product. In addition, edges, 100% aluminum foil can be sharp after a puncture or cut. These sharp edges can cause scratches and small damages to the consumer. Layered material in accordance with this izobreteny the m has a lower probability of falling flakes or chips in the product, and edges punctured layered material creates less chance of scratching and damage to the consumer after a puncture seal.

In accordance with the present invention offers a layered material having barrier properties, provide 100 μm aluminum foil, and having the mechanical characteristics of the treatment provided 100% aluminum. Aluminum layers provide the necessary barrier properties, while paper middle layer or middle layer of the film of plastic creates the necessary thickness and mechanical strength required for the treatment with the layered material. In addition, through the use of a small amount of aluminum foil in accordance with the present invention, the value declared layered material substantially reduced in comparison with a 100% aluminum foil.

We now turn to a consideration of figure 1, showing the increasing cross section of a variant of the laminate 10 in accordance with the present invention. In this embodiment, the inner layer 20 of aluminum foil connected with polyurethane layer 30, with the first side of the paper medium layer 40. Paper middle layer 40 is connected to the second side of the outer layer 60 of aluminum foil, using layer 50 made of polyethylene low is lotnosti.

In another embodiment, the laminate 100 in accordance with the present invention, is shown in figure 2, the inner layer 20 of aluminum foil connected, using a polyvinyl acetate layer 70, the first side of the paper medium layer 40. Paper middle layer 40 is connected to the second side of the outer layer 60 of aluminum foil, using a polyethylene layer 80.

In some embodiments of the invention can be used multiple internal and/or external layers of aluminum foil. In other embodiments, can be used a lot of paper middle layer or middle layer of the film of plastic material. In other embodiments, different layers can be connected using any known lamination process, or a combination of known processes of lamination. For example, to connect the various layers may be used a combination of wet adhesive lamination and dry adhesive lamination.

In some embodiments of the invention, the total weight of the layered material may be approximately from 150 to 190 gsm gsm. In a specific embodiment, the total weight of the layered material may be about 170 gsm. In some embodiments of the invention, the total thickness of the layered material may be approximately from 110 μm to 140 μm. In a specific embodiment, the total thickness of the layered materialmade be about 122 microns.

The following examples describe different ways in accordance with the present invention. It should be borne in mind that the object of the present invention does not resume the use of other options that can be offered by specialists in this field after studying the description of the present invention or after its implementation. It should be borne in mind that the description of the present invention, together with the above examples, is only exemplary, and the scope of the claims of the present invention is defined by the claims. In the examples all percentages are weight percent unless otherwise indicated.

Example 1

This example describes the preparation of alternative membrane layered material in accordance with the present invention, and also shows the characteristics obtained in the tests.

In this example, a layer of aluminum foil (thickness 20 μm) was connected with the paper layer 40 gsm, using adhesive lamination with polyurethane. A laminated material was then overiden due to its treatment in a furnace at a temperature of approximately 90 to 96°C, at a speed of about 100 m/min. Layered material then was maintained at ambient temperature for 48 hours. After this paper the middle layer was connected to the exterior with the OEM aluminum foil (thickness 20 μm) using a process of extrusion lamination with polyethylene. Layered material then was again overiden due to its processing at the temperature of extrusion of about 320°C., at a speed of about 80 m/min. Layered material then was maintained at ambient temperature for 48 hours. A laminate was then coated on both open aluminum surfaces sliding cover on the basis of nitrocellulose. The layered material is then cut into pieces of appropriate size and used to seal the container. Test transmission and water vapor transmission rate oxygen layered material provided respectively from 0.1 to 0.0 gsm per day and from 0.1 to 0.0 cc/sqm (cubic centimeters per square meter) per day. The test was carried out at a temperature of 38°C and a relative humidity of 90% for the transmission of water vapor and at a temperature of 23°C and a relative humidity of 0% for the rate of transmission of oxygen.

Compaction of the laminate was tested for simulating the opening of a consumer seal, using a spoon and serrated knife. If there is a part of the aluminum seal on the container or shavings fall into the product, it is considered that the seal of the layered material was not performed in a satisfactory manner. The results of this test showed the absence of any traces of aluminum in the product. Thus, seal the laminate was performed in a satisfactory manner.

A laminate was tested for integrity by passing light through a layered material to detect the presence of cracks in the foil, in the middle layer of the layered material. The results of this test showed the absence of any cracks in layered materials.

Were also tested for the determination of shelf life during storage of the product in the container, compressed using the layered material in accordance with the present invention. Containers filled with dry milk, were sealed with a laminated material prepared in Example 1. The containers were stored for 18 months at accelerated conditions of storage (30°C). Viability (suitability) of the product was controlled on a regular basis by examining its stability. The results showed that the viability of the product was achieved after 18 months of accelerated storage and after 36 months under normal conditions of storage. All levels of vitamins and taste characteristics are within acceptable limits.

All references in this description, including without limitation all papers, publications, patents, patent descriptions, views, data, texts, reports, manuscripts, brochures, books, messages on the Internet, articles in journals, periodicals, etc. that are included in this description in their entirety the spine as a reference, if they do not conflict with any other contained in the description information. The discussion of these references are made only to summarize the assertions made by their authors, and not the assumption was made that any reference constitutes prior art. Applicants are not responsible for the accuracy and appropriateness of references cited.

Although the preferred variants of the invention have been described using specific terms, devices, and methods, it should be borne in mind that such description is illustrative. Used in the description of the terminology is not restrictive, so that specialists in this field in the description can be made that fall within the scope of the following claims and are consistent with its spirit. In addition, it should be borne in mind that aspects of the present invention are interchangeable, fully or partially. For example, although there were examples of methods of obtaining commercially sterile liquid food additives, there may be other examples. Thus, the scope of the claims is not limited by the description contained in the description of the preferred options.

1. A laminate obtained by the process comprising the following stages:
a) use inside the it layer of aluminum foil, paper middle layer and outer layer of aluminum foil;
b) laminating an inner layer of aluminum foil middle layer using a method selected from the group comprising adhesive laminating polyurethane, polyvinyl acetate and acrylic adhesive type and extrusion lamination with polyethylene;
c) curing of the inner layer of aluminum foil and paper medium layer;
d) laminating paper middle layer and outer layer of aluminum foil using a method selected from the group comprising adhesive laminating polyurethane, polyvinyl acetate and acrylic adhesive type and extrusion lamination with polyethylene; and
e) curing the inner layer of aluminum foil, paper middle layer and outer layer of aluminum foil.

2. The layered material according to claim 1, in which the inner layer of aluminum foil connected to the middle layer of paper using adhesive lamination with polyurethane and paper which the middle layer is connected with an outer layer of aluminum foil by means of extrusion lamination with polyethylene.

3. The layered material according to claim 1, in which the frosted side of the inner layer of aluminum foil connected to the middle layer of paper.

4. The layered material according to claim 1, in which frosted side externally the layer of aluminum foil connected to the middle layer of paper.

5. The layered material according to claim 1, in which method at the stage of curing involves drying in the oven.

6. The layered material according to claim 1, in which the thickness of the inner layer of aluminum foil is in the range from 12 to 45 microns.

7. The layered material according to claim 1, in which the weight of the middle layer is in the range from 10 to 70 g/m2.

8. The layered material according to claim 1, in which paper the middle layer is made from processed on machine glazed paper.

9. The layered material according to claim 1, in which the thickness of the outer layer of aluminum foil is in the range from 12 to 45 microns.

10. The layered material according to claim 1, in which the thickness of the polyethylene is in the range from 10 to 20 microns.

11. Foil membrane containing layered material according to claim 1.

12. A container having a seal containing layered material according to claim 1.

13. The container 12 for storing a product sensitive to moisture or susceptible to decomposition under the action of oxygen.

14. The container according to item 13, in which the product is selected from the group which includes infant formula, dietary Supplement, Supplement breast milk or baby food.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to multilayer films, having an active oxygen barrier and can be used for packaging using an autoclave. The film contains at least one active oxygen barrier layer which contains a mixture of thermoplastic resin (A), transition metal salts (B) and an oxygen barrier polymer (C), and a layer which contains an iron-based oxygen-binding composition. The film has oxygen binding rate of at least approximately 0.01 cm3 oxygen per day per gram of the oxygen-binding composition.

EFFECT: invention enables to produce sealed packaging from a film with inside oxygen concentration of about 0% after 35 days of storage in relative humidity of 75% and temperature 75°C.

11 cl, 2 tbl, 14 ex

FIELD: process engineering.

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EFFECT: package with barrier layers.

15 cl, 8 dwg, 1 tbl

Packing laminate // 2444440

FIELD: process engineering.

SUBSTANCE: invention relates to packing laminate, its fabrication and application, to package for foodstuffs or drinks. Retortable packing laminate comprises main layer of sized paper or cardboard, barrier layer for liquid and barrier layer for gas. Note here that said paper or cardboard comprises expanded or nonexpanded expanding thermoplastic microspheres.

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17 cl, 10 tbl, 8 ex

FIELD: chemistry.

SUBSTANCE: invention relates to production of packaging materials for food products and beverages, particularly barrier films, laminated packaging materials and packaging containers. The barrier film has a base polymer film and a barrier layer containing an inorganic oxide deposited on the base film via gas-phase deposition. The layer of inorganic oxide is additionally coated with a healing layer of cross-linked organopolysiloxane which is covalently bonded with the inorganic layer. The laminated packaging material has a barrier film. The packaging container is made from said barrier film.

EFFECT: packaging material has good barrier properties with respect to oxygen and water vapour, improved strength and softness.

23 cl, 9 dwg, 5 ex

FIELD: chemistry.

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33 cl, 5 tbl, 34 ex

FIELD: textile, paper.

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23 cl, 7 tbl, 5 ex

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32 cl, 8 tbl, 6 dwg

FIELD: chemistry.

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24 cl, 1 tbl, 1 ex

Multilayer bottle // 2415015

FIELD: process engineering.

SUBSTANCE: invention relates to multilayer bottle intended for beer, tea, juices or carbonated drinks. Proposed bottle comprises inner and outer layers, each made from polyether (A), and, at least, one barrier layer arranged there between. Polyether (A) is thermoplastic resin produced by polymerisation of dicarboxylic acid containing 80 gram-mol or more of terephthalic acid with diol component containing 80 gram-mol or more of ethylene glycol. Barrier layer contains the mix of polyamide (B) and polyamide (C). Polyamide (B) is produced by polycondensation of diamine component containing 70% gram-mol or more of m-xylylenediamine with dicarboxylic acid containing 70 gram-mol or more of α,ω-linear aliphatic dibasic acid with C4-C20. Polyamide (C) consists of poly(6-aminocaproic acid) and/or poly(hexamethylene diamine of adipinic acid), and amorphous semi-aromatic - copolymer of hexamethylene isophthalamide/hexametgyleneamide of terephthalic acid.

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12 cl, 2 tbl, 8 ex

Multilayer bottle // 2411129

FIELD: process engineering.

SUBSTANCE: invention relates to multilayer bottle intended for tea, juices or carbonated drinks. Proposed bottle comprises outer layer, inner layer and barrier layer arranged there between. Outer and inner layer are made from polyether (A) produced y polymerisation of dicarboxylic acid component that contains 80 mol %, or more, of terephthalic acid with diol component containing 80 mol %, or more, of ethylene glycol. Barrier layer comprises polyamide (B) produced by polycondensation of 70 mol %, or more, of meta-xylylenediamine with 70 mol %, or more, or α,ω-collinear aliphatic dicarboxylic acid with 4-20 carbon atoms, and thermoplastic polymer (C).The latter is selected from the group consisting of phenoxy resin in the form of poly hydroxyl ester, polyglycol acid and polyamide oligomer with low molecular weight other than polyamide (B).

EFFECT: multiplayer bottle without delamination in flatwise fall.

8 cl, 3 tbl, 8 ex

FIELD: process engineering.

SUBSTANCE: invention relates to labeling. Labels with substrate represent composite material containing long sheet of thin or light temporary substrate with precut label glued to low-adhesion surface. Said labels are fed into labeling machine. Support elements other than vacuum appliances of rollers, allow using thinner sheet substrates. Cutting head to cut or perforate labels with glue on labeling material is arranged so that, at least, 80% of its surface make flat sections between cutting edges, or multiple cutting edges on said outer surface. Cutting head has also inner chamber for circulation of cooling fluid flowing therein and there out to cool outer surface of said cutting head when coolant temperature is, at least, 10°C lower than that of cutting head outer surface.

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24 cl, 7 dwg

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4 cl, 5 dwg

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SUBSTANCE: invention relates to method of fabricating light construction plate, to light construction plate and to device for production of said plate. Production of said plate with, at least, two facing layers and central layer, comprises making central layer from paper, light cardboard or cellular cardboard. Central layer is fed to processing assembly. Cellular central layer is processed in processing assembly. Central and/or facing layer is provided with adhesive substance. Central layer is arranged between two said facing layers and fed to processing assembly. Central layer is jointed with, at least, two facing layers. Central layer cellular material is processed, central layer and/or facing layer is provided with adhesive substance. Central layer material is processed so that cellular material acquires characteristic properties that impart diverse properties to light construction plate.

EFFECT: lower costs.

19 cl, 2 dwg

FIELD: construction.

SUBSTANCE: method includes manufacturing of stiffening ribs combined into a single corrugated element of polymer composite material, filled with foam plastic at two sides to the level of the corrugated element shelves, and forming of bearing layers on the surface of the middle layer at both sides. The corrugate element is produced in a single process, simultaneously with manufacturing of the middle layer, carried out by method of laying "dry" glass-reinforcing material, preferably, glass tissue and bars of rigid polyvinylchloride foam plastic of the specified shape of cross section into the rigid matrix with the inner cross section, which is similar to the cross section of the middle layer panel, made to match the size of the three-layer panel. The matrix is covered with a rigid puncheon, mechanically connected to it, to which a vacuum pump is connected, as well as a device of binder supply from the reservoir. Vacuum is pulled in the working cavity of the rigid matrix, binder is supplied in it to impregnate the middle layer panel. The middle layer panel is cured in the rigid matrix under vacuum for preliminary polymerisation of the binder, then the vacuum pump is switched off, and the puncheon is removed off the rigid matrix. The middle layer panel is removed from the rigid matrix after it achieves the ambient temperature.

EFFECT: increased strength and rigidity of triple-layer panels, reduced labour intensiveness of manufacturing.

2 cl, 4 dwg

FIELD: chemistry.

SUBSTANCE: polymeric film consists of a block-copolymeric peelable middle layer and at least one adhesive non-peelable surface layer. The middle layer makes up 95% of the thickness of the film. The surface layer contains a terpolymer of polyethylene/polypropylene/polybutylene and has thickness from approximately 0.1 mcm to approximately 1.5 mcm. An adhesive coating is deposited on the surface layer. The adhesive coating and/or surface layer is hot-sealable. The middle layer has at least one olefin component. The adhesive polymeric film has high adhesion capacity in a wide temperature range and peeling capacity. Bonded packaging is made from the polymeric film which contains a block-copolymeric substrate and adhesive coatings and/or surface layer are obtained on the substrate. The packaging is obtained by wrapping the packed article with the film such that at least one area for overlapping and hot-sealing is obtained.

EFFECT: adhesive region can be opened by manually separating overlapping sections of the film without breaking the film in or around the bonded region.

24 cl, 1 tbl, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of facing materials. First, resin is applied onto surface of main plate. Second, paper coat is applied onto surface of main plate, and, third, main surface with resin applied thereon and paper coat are pressed together.

EFFECT: reduced wastes.

35 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to lamination and laminate made thereby. Proposed method consists in direct impregnation by pressing of non-impregnated substrate material with non-impregnated decorative layer and one or more upper layers impregnated with polymer that feature intensity of effluent resin exceeding 8%. Method is implemented using short-cycle presses at 15 to 40 bar and 140 to 220 220°C. Intensity of effluent resin is determined by the formula

EFFECT: lamination by direct pressing using short-cycle presses with good quality of finished laminate surface.

13 cl, 3 ex

FIELD: process engineering.

SUBSTANCE: invention relates to lamination and laminate made thereby. Proposed method consists in direct impregnation by pressing of non-impregnated substrate material with non-impregnated decorative layer and one or more upper layers impregnated with polymer that feature intensity of effluent resin exceeding 8%. Method is implemented using short-cycle presses at 15 to 40 bar and 140 to 220 220°C. Intensity of effluent resin is determined by the formula

EFFECT: lamination by direct pressing using short-cycle presses with good quality of finished laminate surface.

13 cl, 3 ex

FIELD: process engineering.

SUBSTANCE: invention relates to lamination and laminate made thereby. Proposed method consists in direct impregnation by pressing of non-impregnated substrate material with non-impregnated decorative layer and one or more upper layers impregnated with polymer that feature intensity of effluent resin exceeding 8%. Method is implemented using short-cycle presses at 15 to 40 bar and 140 to 220 220°C. Intensity of effluent resin is determined by the formula

EFFECT: lamination by direct pressing using short-cycle presses with good quality of finished laminate surface.

13 cl, 3 ex

FIELD: process engineering.

SUBSTANCE: invention relates to method of producing multilayer components with coat layers made from thermoset. Invention covers the method of producing multilayer components comprising central layer with open structure and coat layers 1, 3 applied on both surfaces of central layer. Note here that coat layers are made from thermoset, while multilayer component is vulcanised at pressure in sealed device, e.g. vulcaniser or autoclave. Note also that filling gas, e.g. nitrogen or air, is fed into central layer till, at least, partial hardening of coat layers. Not also that filling gas pressure is selected not to exceed closed device operating pressure to prevent origination of recesses on coat surface. Note also that filling air pressure is varied by control device subject to degree of coat layer hardening, while material viscosity is measured by said control device to vary pressure of filling gas. Invention covers also vulcaniser consisting of two parts 4, 5 with heater-controlled temperature, and tight housing 6 accommodating central layer and, at least, two coat layers 1, 3 produced from thermoset. This vulcaniser serves to produce multilayer coat under pressure. Housing 6 comprises, at least, one connection device 8, 9, 10 for feed and/or discharge filling gas into central layer 2, or from central layer 2 for, at least, partial preventing origination of recesses on the surface of layers 1,3 during vulcanisation. Note here that filling gas pressure varies subject to viscosity of coat layer material.

EFFECT: multilayer components with optimum characteristics of their surface.

11 cl, 1 dwg

Packing laminate // 2444440

FIELD: process engineering.

SUBSTANCE: invention relates to packing laminate, its fabrication and application, to package for foodstuffs or drinks. Retortable packing laminate comprises main layer of sized paper or cardboard, barrier layer for liquid and barrier layer for gas. Note here that said paper or cardboard comprises expanded or nonexpanded expanding thermoplastic microspheres.

EFFECT: higher resistance against water and gas penetration.

17 cl, 10 tbl, 8 ex

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