Biodegradable paper-based glass or pack and method of their production

FIELD: technological processes.

SUBSTANCE: invention is related to technology for production of biodegradable flaky paper-based materials, in particular to containers for liquid or hard, hot or cooled food products. Biodegradable flaky material contains paper base, having the first and second layers of polyethers applied at least on single surface of base. Intermediate layers of polymers between surface of base and copolyethers applied on base surface are actually unavailable. Copolyethers of both layers are non-identical products of copolymerisation of benzol-1,4-dicarboxylic acid with aliphatic diatomic spirit and at least one reagent selected from group including aliphatic dicarboxylic acid, cyclic diatomic spirit, aromatic diatomic spirit.

EFFECT: production of moulded product with improved technical characteristics resistant to damage and softening.

27 cl, 4 dwg, 1 ex

 

The technical FIELD

The present invention relates to biodegradable layered materials based on paper.

The LEVEL of TECHNOLOGY

Paper cups for single meals usually have a coating applied by extrusion of low density polyethylene (LDPE) or other similar polymers so that they could hold hot liquid for a long time, not softening and preventing leakage, as all paper cups. Cups for hot drinks such as coffee, have a layer of LDPE on the inside to hold the liquid. Glasses for soft drinks etc. are usually covered with LDPE on both sides to prevent condensation that forms on the outer surface of the glass due to the softening of the paper. Typically, the coating thickness of the LDPE is 0.5 to 1.5 mils (1/1000 inch) (7,2-21.6 lb/3000 sq. ft.) (11,7-35 g/m2).

Glasses these types are used only once or a very limited amount of time and then disposed of. Although the paper base is usually biodegradable coating of LDPE decomposes (and composted) is very difficult, and therefore, the glass may be placed in a landfill for many years without decomposing. It is desirable to use one or more biodegradable polymers instead of LDPE in order to make the used glasses cleaner.

the DISCLOSURE of the PRESENT INVENTION

The present invention can also be used for manufacturing, in addition to glasses, and other paper products with a coating, for example of cardboard boxes with lids, folding cartons, paper bags, wrapping paper for sandwiches, paper plates and cups, wrapping paper for copy paper.

Accordingly, one purpose of the present invention is to provide a biodegradable laminated material suitable for coating a molded paper products, such as containers, which does not have the common disadvantages of the materials and methods known from the prior art, and is biodegradable in a composting environment.

Another objective of the present invention is to provide a method of forming a biodegradable laminated material suitable for coating a molded paper products.

Another objective of the present invention is the creation of moulded articles containing biodegradable laminate.

Having in mind the above and other objectives, in accordance with the present invention offers a biodegradable laminated material suitable for use in moulded articles, such as containers for solid or liquid, hot or cold food. Mentioned biodegradable laminate contains anagnou basis, having two or more surfaces, and applied at least on one surface of the base at least one layer of the first sobolifera and at least one layer of the second sobolifera in the actual absence of an intermediate layer of polymer between the surface of the base layer and the first sobolifera deposited on the surface of the base. The first layer of sobolifera is an internal layer, bonding a paper base, and a second layer of sobolifera is the outer layer that prevents adhesion to the cooling rollers and sticking in the roll, and also provides improved heat resistance compared with the first-mentioned layer. First copolyester and second copolyester not identical.

Sobolifera materials of the present invention are products of copolymerization benzene-1,4-dicarboxylic acid with aliphatic diatomic alcohol and at least one reagent selected from the group consisting of aliphatic dicarboxylic acids and aromatic diatomic alcohol.

Sobolifera materials of the present invention are products of copolymerization benzene-1,4-dicarboxylic acid with aliphatic diatomic alcohol and at least one reagent selected from the group consisting of aliphatic dicarboxylic acids and cyclic diatomic alcohol. The approach is the following diatomic alcohols include 1,4-butanediol, 2,2-dimethyl-1,3-propandiol and ethylene glycol. Suitable aliphatic dicarboxylic acids include 1,6-hexandiol acid, 1,8-nanodialogue acid, 1,10-decandiol acid and 1,12-dodecandioic acid. Suitable cyclic diatomic alcohols include cyclohexane-1,4-dimethanol, 1,1,3,3-tetramethylcyclobutane-2,4-diol and 1,4:3,6-dianhydro-D-sorbitol.

Particularly preferred first sobolifera is the product of copolymerization benzene-1,4-dicarboxylic acid and 1,4-butanediol. This product is commercially available under the trade name ECOFLEX and EASTAR BIO.

Particularly preferred second sobolifera is the product of copolymerization benzene-1,4-dicarboxylic acid and 1,4:3,6-dianhydro-D-sorbitol. This product is commercially available under the brand name BIOMAX.

A particularly preferred method of applying layers of sobolifera is a joint extrusion, in appropriate cases on a moving canvas of paper or cardboard.

Sobolifera materials layered material of the present invention are certified as biodegradable in a composting environment (tested according to ASTM D6400-99), which makes the layered material is highly desirable for use as a material for molding food containers that are usually used once or a very limited number of times before recycling them. Chrome is also the Biodegradability of the layered material of the present invention enables to use it in other disposable products based paper such as wrapping paper for sandwiches, paper for packing copy paper, etc.

In one embodiment, the layered material can be supplied jointly extruded layer of the same or other sobolifera on the opposite surface of the paper base.

In accordance with the present invention also proposes a biodegradable product on a paper basis, such as biodegradable container, or preparation or semi-finished product, which can be molded container and which is made from biodegradable laminate.

In addition, in accordance with the present invention offers a method of forming a biodegradable laminated material suitable for use in molded articles on a paper basis.

Other signs that are considered distinctive to the present invention set forth in the accompanying claims.

Although the present invention is illustrated and described herein as carried out in the form of cups or packaging from biodegradable paper, it is nevertheless not intended to limit only the details, because it can be made to the hypoxia modifications and structural changes without departing from the essence of the invention and within the scope and series of equivalents of the claims.

The construction and method of operation of the invention, however, together with additional objectives and advantages will be best understood from the following description of specific embodiments taken together with the attached drawings.

BRIEF DESCRIPTION of DRAWINGS

1 and 2 are schematic perspective views of a variant of implementation of the layered material containing various features of the present invention.

Figure 3 is a schematic view of the second variant implementation of the layered material containing various features of the present invention.

Figure 4 is a diagram of manufacturing process of the laminate of the present invention.

The BEST OPTION of carrying out the INVENTION

With reference to the drawings, particularly figures 1 to 3, shown biodegradable laminated material 10, which has a paper basis, i.e. the basis 12 of the layered material includes paper, commonly called paper raw materials from SBS for glasses or corrugated cardboard from SUS (natural) for folding cardboard boxes, which are well known in the prior art. Layered material of the present invention, in addition, contains the first and second layers 14 and 16, respectively sobolifera, who co-extruded on one 18 of the surfaces of the paper base.

As shown in figure 4, the production cloister the material of the present invention involves feeding a continuous sheet 20 SBS or other acceptable paper from a roll 22 forward in the usual extruder 24, which serves the first copolyester 26 and the second copolyester 28. The first and second sobolifera is extruded together on a flat surface 18 referred to the paper base, which is then collected, for example, by winding the completed layered material 30 on the shaft 32, etc. then layered material can be shaped into a glass, a package, a box with a lid or other container for food products, initially by making blanks or semi-finished products and convert it into a final product. The resulting container can be used to hold liquid, solid or semi-solid product, regardless of whether the food cold or hot (within normal temperatures warmed and chilled food products). An example of hot food is hot coffee with a temperature of approximately 180°F (82°C). An example of a chilled food product is ice tea with temperature 33-40°F (0.5 to 4.4°C).

In a preferred embodiment, the paper base laminate of the present invention contains or raw materials for the manufacture of glasses from SBS (bleached Kraft pulp), or raw materials for the manufacture of cardboard for folding boxes from SUS (unbleached sulphate pulp) (natural corrugated cardboard). The preferred range of the ACC cardboard approximately 100-300 pounds/3000 sq. feet (163-488 g/m2). Other examples of acceptable raw materials (base) include cardboard for packaging liquids, cardboard from SBS for folding boxes natural Kraft paper cups, easy Kraft paper and paper from SBS, as well as cardboard or paper with post-consumer waste content ("secondary"). Easy paper is defined as having less than 100 pounds/3000 square feet (163 g/m2). Cardboard for packaging liquids can be used for making boxes with lids for products such as, for example, dairy products. Applications light-weight paper include packages for powder or other dry foods such as oatmeal, brown paper for sandwiches at fast-food restaurants and wrapping paper for copy paper.

In accordance with one aspect of the present invention, as shown in figures 1 and 2, at least one flat surface of the paper base is applied jointly extruded combination of sobolifera, namely or sobolifera, which is the product of copolymerization of 1,4-benzylcarbamoyl acid (terephthalic acid), 1,4-butanediol and adipic acid, as well as agent for elongation or branching chains (offered by the company BASF under the trade name ECOFLEX® temperature range of the melting 212-248°F (100-389°C)), or sobolifera obtained by copolymerization ,4-benzylcarbamoyl acid (terephthalic acid), 1,4-butanediol and adipic acid (obtained by sobolifera is poly(tetramethylthiuram-kateretidae) (offered by the company Eastman Chemical/Novamont under the brand name Eastar Bio® with a melting point of 226°F (108°C)), and sobolifera obtained by the condensation reaction of 1,4-benzolkarbonovyh acid, ethylene glycol and 1,4:3,6-dianhydro-D-sorbitol (proposed by DuPont under the brand name Biomax® melting temperature of 383°F (195°C)).

As shown in figure 1, in the preferred embodiment, for use in containers for hot food paper base provided on one flat surface together extruded layer Ecoflex and Biomax. Separately in the environment compost approximately 90% resin is biodegradable Ecoflex for about 80 days and approximately 95% of the resin Biomax is biodegradable for about 63 days. In a study conducted by the laboratory of the University of layered material coated bioresource more than 90% in about 88 days, which complies with the Biodegradability criteria/ability to compost formation according to the standards ASTM D6400-99 and D6868.

In this preferred embodiment, for containers for hot food total coating weight after co-extrusion is approximately 10-40 pounds/3000 square is outow (16 to 65 g/m 2), can be applied to any combination of between approximately 80/20-20/80 mass fractions Ecoflex - Biomax. The preferred total coating weight of approximately 25 pounds/3000 square feet (41 g/m2) as for reasons of workability and characteristics of the final product. Preferably Biomax is used in an amount of 5-20 pounds/3000 square feet (8-33 g/m2), and the rest of the total mass of the coating falls on Ecoflex. For cups for hot drinks, for example, together extrudable substances are applied to the coated side of the paper base. To improve the clutch as desired or necessary, can be applied to fire and/or corona pre-treatment of the substrate surface. Can be used less of the total mass of the coating, but with a possible loss of quality heat seals in the subsequent final packaging (cups, boxes with lids, etc.). Can also be used and large total mass of the coating, but the cost of materials can not match the advantages of the improved performance of such heavier coatings and/or may slow the overall rate of decomposition of such a container.

In addition, it is found that the usage of Ecoflex as the only layer of the layered material for the purposes of biodegradation usually requires moving packages/antiadhesive perches is to prevent adhesion to the cooling rollers and sticking in the roll end of the layered material. In addition, a significant shrinkage when one or more sobolifera applied as a single layer, leading to excessive pruning and creating waste. Biomax, in particular, when applied as a single layer is not sufficiently well bonded to the paper substrate. Conversely, the application of a combination of the above spoliation in accordance with the present invention is effective for overcoming the shortcomings of spoliation, applied as a single layer.

Containers for refrigerated food products preferably are manufactured from a laminated material shown in Figure 3. Shown layered material contains a base paper having the first layer is extruded together Eastar Bio or Ecoflex (preferably Ecoflex) and Biomax on one flat surface of the base, and Biomax is located farthest away from the Foundation. Next, the second layer is extruded together Eastar Bio or Ecoflex (preferably Ecoflex) and Biomax is applied to the opposite flat surface of the base, and Biomax again is located farthest away from the Foundation. In this embodiment, for containers for refrigerated food products jointly extruded layer of sobolifera (regardless of what side of the framework is the layer) has a total coating weight of approximately 10-40 pounds/3000 square feet (16 to 65 g/m2 in any combination between 80/20-20/80 mass fractions Ecoflex - Biomax. The preferred total coating weight of approximately 25 pounds/3000 square feet (41 g/m2). As in the layered material, intended for use with hot food, in this layered material, designed for use with chilled food, Biomax in the coating is applied in a weight of approximately 5-20 pounds/3000 square feet, and the rest of the coverage is Ecoflex or Eastar Bio.

In yet another embodiment, shown in figure 1, the paper base 12 may be provided jointly extruded layer of Eastar Bio 14 and Biomax 16 on one of the flat surfaces of the base. In this embodiment, the total coating weight of approximately 10-40 pounds/3000 square feet (16 to 65 g/m2in any combination, approximately 80/20-20/80 mass fractions Eastar Bio - Biomax. The preferred total coating weight of approximately 25 pounds/3000 square feet (41 g/m2). Biomax in the coating is applied in a weight of approximately 5-20 pounds/3000 square feet (8-33 g/m2), and the rest of the coverage is Eastar Bio.

Optionally, any one or all of the extruded sobolifera can be added by replacing a certain amount of biodegradable resin, calcium carbonate as a cost-saving measure and to ensure that speed is izlozheniya. Other organic and inorganic fillers may be used together with calcium carbonate or instead of, including starch, clay, kaolin, talc, cellulose fibers and diatomaceous earth.

Two-layer, co-extruded coating consisting of BASF Ecoflex and DuPont Biomax was applied to raw SBS for the production of glasses and natural corrugated cardboard for folding boxes. Basic mass SBS and corrugated cardboard was 180-210 pounds/3000 square feet (293-342 g/m2). The melting temperature of these two resins were respectively 450°F (232°C) and 465°F (241°C).

The corresponding mass in the floor was 12.5 pounds/3000 square feet (20 g/m2) Ecoflex and 12.5 pounds/3000 square feet Biomax (20 g/m2). The total mass of coating, amounting to at least 10 pounds/3000 square feet (16 g/m2) - 25 lb/3000 square feet (41 g/m2), has provided good resistance to melting and minimum interlocking edges of the extruded layer.

Blanks and semi-finished products containing biodegradable laminates, extruded together on raw materials from SBS for the production of glasses and raw materials from SUS for the production of folding cardboard boxes manufactured by the method described above were transformed into the glasses on the car PMC 1000 for forming cups with a speed of 140 cups per minute. All the glasses have been tested on hold coffee (at 180°F (8°C)) for a period of not less than 25 minutes without leakage, softening of the coating or visual pollution drink coating.

Test * heat sealing was carried out on a standard raw materials for the production of glasses of low density polyethylene (LDPE) and corrugated cardboard for folding boxes, which were jointly extruded Ecoflex and Biomax. Samples of each of the base was placed coated side to uncoated side in termokleevuyu apparatus Barber-Coleman. Termokleevuyu the pressure was maintained constant at 80 psig (516 g/cm); the exposure time was 5 C. the Temperature was changed in order to determine the minimum temperature at which achieved 100% the breakdown of the fibers. After the bonding step, the samples were allowed to cool for 30 s before manually separating layers and visually assess the degree of strain of the fibers. For standard raw materials for the production of glasses with a coating of LDPE minimum temperature bonding was 215°F (102°C). Corrugated cardboard with a coating of Ecoflex and Biomax were stuck at a little lower temperature 210°F (99°C).

In accordance with one aspect of the present invention it is noted that the joint extrusion of two sobolifera gives numerous benefits. For example, Eastar Bio and Ecoflex well linked to the paper, giving 100% strain of the fibers. On the other hand, the level of coupling between the Biomax and paper is much less than that ol the leads to very small strain of the fibers. Thus, in the present invention the layer of extruded together Eastar Bio or Ecoflex is located directly next to the paper base to achieve good adhesion. Biomax less sticky than Eastar Bio or Ecoflex. Therefore, the layer extruded together Biomax is located on the outside of the layers of the layered material to prevent adhesion of the laminate to the cooling rollers and the adhesion of the laminate roll.

In addition, Biomax has a significantly higher melting temperature than Eastar Bio or Ecoflex (383°F (195°C) Biomax against 226°F (108°C) Eastar Bio and 212-248°F (100-120°C) Ecoflex); therefore, the location of the Biomax as the outer layer of the laminate in contact with hot food allows a container made of this layered material, to be more resistant to degradation and softening of the coating under the action of hot food.

1. Biodegradable layered material comprising a paper base coated with at least one layer of the first sobolifera and at least one layer of the second sobolifera, and Capoliveri mentioned first and second layers are non-identical products copolymerization benzene-1,4-dicarboxylic acid with aliphatic diatomic alcohol and at least one reagent selected from the group consisting the th of the aliphatic dicarboxylic acid, aromatic diatomic alcohol and cyclic diatomic alcohol, and the above-mentioned layers are applied on at least one surface of the above mentioned bases, where the first layer is an inner layer, bonding a paper base, and the second layer is the outer layer that prevents adhesion to the cooling rollers and sticking in the roll, and also provides improved heat resistance compared with the first-mentioned layer.

2. Biodegradable laminated material according to claim 1, characterized in that the said diatomic alcohol is 1,4-butanediol and said at least one reagent is 1,6-hexandiol acid.

3. Biodegradable laminated material according to claim 1, characterized in that the said diatomic alcohol is ethylene glycol, and said at least one reagent is 1,4:3,6-dianhydro-D-sorbitol.

4. Biodegradable laminated material according to claim 1, characterized in that the said layers sobolifera have different melting points, and copolyester with a lower melting point is between the base and sobolifera with a higher melting temperature.

5. Biodegradable laminated material according to claim 1, characterized in that the proportions of the first sobolifera and second sobolifera are in the range of from 20 wt. h referred to the first paragraph is Levira 80 wt. including this second sobolifera up to 80 wt. including first mentioned polyester 20 wt. including this second sobolifera.

6. Biodegradable laminated material according to claim 1, characterized in that the total weight of the coating mentioned first and second sobolifera is in the range from 16 to 60 g/m2.

7. Biodegradable laminate according to claim 6, characterized in that the total weight of the coating mentioned first and second sobolifera is 38 g/m2.

8. Biodegradable laminated material according to claim 1, characterized in that the inorganic filler is added, at least one layer of sobolifera.

9. Biodegradable laminate of claim 8, wherein the inorganic filler is calcium carbonate.

10. Biodegradable laminated material according to claim 1, characterized in that the layers of spoliation can be thermochimica.

11. Biodegradable laminated material according to claim 1, are biodegradable in accordance with the Biodegradability criteria/abilities to the formation of compost standards ASTM D6400-99 and D6868.

12. A molded product made of biodegradable paper, containing a paper base, at least two surfaces and layered biodegradable material applied on at least one surface of the said base, characterized in that the said with oily material has an inner layer of the first sobolifera, moreover, the layer of the first mentioned polyester ensures adhesion to paper based, and the outer layer of the second sobolifera preventing sticking to the cooling rollers and sticking in the roll and providing a higher heat resistance as compared with the first-mentioned layer, and characterized in that sobolifera mentioned first and second layers are not identical products copolymerization benzene-1,4-dicarboxylic acid with aliphatic diatomic alcohol and at least one reagent selected from the group consisting of aliphatic dicarboxylic acids and cyclic diatomic alcohol.

13. Biodegradable molded article according to item 12, characterized in that the said paper base has a layer mentioned first and second sobolifera deposited on one surface of the said base, and a second layer mentioned first and second sobolifera deposited on the opposite surface of the said base.

14. Biodegradable molded article according to item 12, characterized in that the said paper base has a layer mentioned first and second sobolifera deposited on one surface of the aforementioned substrate, and the opposite surface is referred to bases without coverage.

15. Biodegradable molded article according to item 12, having a form selected from the group consisting of Takenov, boxes with lids, folding boxes, paper bags, wrapping paper for sandwiches, paper plates and cups, wrapping paper for copy paper and billets for production.

16. Biodegradable molded article according to item 12, which is a preparation for use in the manufacture of glass of chilled food products.

17. Biodegradable molded article according to item 12, which is a glass of chilled food products.

18. Package a box with a lid or other container for liquid, solid or semi-solid food and non-food products, made of layered material according to item 13.

19. Wrapping paper, made of layered material according to item 13.

20. Method of manufacturing molded products made of biodegradable paper, containing the following steps:
a) obtaining a paper base with a base weight in the range 163-488 g/m2and at least one flat surface;
b) applying at least one flat surface of the base laminate of at least one of the first sobolifera and at least one second sobolifera, and the first copolyester and second copolyester are not identical, and
c) molding products,
characterized in that the layer of the first sobolifera is an internal layer, bonding a paper basis, and with the Oh of the second sobolifera is the outer layer, prevent the sticking of the cooling rollers and sticking in the roll and providing a higher heat resistance as compared with the inner layer, and wherein the first and second Capoliveri are not identical products copolymerization benzene-1,4-dicarboxylic acid with aliphatic diatomic alcohol and at least one reagent selected from the group consisting of aliphatic dicarboxylic acids and cyclic diatomic alcohol.

21. The method according to claim 20, characterized in that the first and second Capoliveri are not identical products copolymerization benzene-1,4-dicarboxylic acid with aliphatic diatomic alcohol and aliphatic dicarboxylic acid or aromatic diatomic alcohol, which is the reagent.

22. The method according to claim 20, characterized in that the total mass of spoliation in the coating is in the range from approximately 16 to 65 g/m2.

23. The method according to claim 20, characterized in that the first and second sobolifera have different melting points, and copolyester with a lower melting point is between the Foundation and sobolifera with a higher melting temperature.

24. The method according to claim 20, characterized in that the layer of spoliation applied on one surface of the substrate and a second layer of spoliation is applied on the opposite surface is very foundations.

25. The method according to claim 20, characterized in that the layer of spoliation is applied to one surface of the base, and the opposite surface is referred to fundamentals has no cover.

26. The method according to claim 20, characterized in that at least two sobolifera applied to the base through co-extrusion on a moving canvas of paper or cardboard.

27. The method according to p, characterized in that the temperature of the melt extrusion process for the layers of the first and second sobolifera is in the range 227-266°C.



 

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11 cl, 1 dwg

FIELD: textiles; paper.

SUBSTANCE: invention relates to a security element, particularly a security thread for value documents such a banknotes, credit cards, identification papers, or tickets, comprising at least one partial magnetic layer for storing a coded piece of information. Also disclosed is a method for producing said security element. This is the method for producing a security element including a second film member with a partial magnetic coating, whereby an adhesive layer made of a radiation crosslinking adhesive is applied to a first film member. Said adhesive layer is applied to the base film from the radiation crosslinking adhesive in a structured pattern-like shape and/or is irradiated in a pattern-like manner such that the adhesive layer hardens so as to form a pattern-like structure. A transfer film encompassing a support film and a magnetic layer that faces the adhesive layer is applied to the adhesive layer. Then the support film is removed from the second film member comprising the first film member, the adhesive layer, and the magnetic layer having the form of said partial magnetic coating. The magnetic layer remains thereby on the first film member in a first structured pattern-like zone while said magnetic layer remains on the support film in a second structured pattern-like zone and is removed from the first film member along with the support film.

EFFECT: present invention provides a process for producing an enhanced security element and makes it possible to avoid undesirable grain formation and deformations.

32 cl, 8 dwg

FIELD: technological processes.

SUBSTANCE: plastic foam contains at least one strip of adhesive material, which is divided into several narrow strips that form first group of narrow strips with adhesive material and second group of alternating narrow gaps, where adhesive material is absent, on the surface of plastic foam. Method of plastic foam production includes plastic foam production by extrusion method. Then the surface of freshly extruded plastic foam is covered with a group of narrow adhesive material strips that are divided by alternating narrow gaps where adhesive material is absent. Then plastic foam is degassed.

EFFECT: surface of produced plastic foam is not deformed and remains flat and smooth during degassing.

15 cl, 10 dwg

FIELD: transportation; cosmonautics.

SUBSTANCE: method for assembly of three-layer panel with support units includes fixation of honeycomb by support units. Adhesive composition is applied on internal sides of upper and lower claddings and side surfaces of support units for connection with honeycomb. Fixation of support units in panel is carried out with the help of process rods installed into internal holes of support units and holes in claddings. Length of rods is equal or less than panel thickness.

EFFECT: method efficiency, since for panel assembly additional accessories are not required, besides, shape of support units is simple to implement.

1 dwg

FIELD: metallurgy.

SUBSTANCE: invention relates to composite casting methods of manufacturing and can be used during the receiving of thin bimetallic strips with following regulation of layers joint efficiency. Method includes collateral cold rolling of blanks with cobbing one-pass with feeding of pulse of current into deformation area. Pulses of current are fed directly throug insulated from each other rollers with peak value of current density Jm=(5…10)·105 A/cm2, pulse-repetition frequency - f=(0.07…2.5) kHz, and pulse duration - tpulse=(0.2…5)·10-3 s. Additionally during rolling it is implemented the control of layers strength of joint of the received composite casting. Strength control is implemented by means of measurement of surplus temperatures of composite casting in different points of surface with its heating by point source. On the basis of surplus temperatures it is defined electrical contact resistance composite casting layers, and strength of joint of layers is defined from preliminary defined relation of layers strength of joint from the value of electrical contact resistance of composite casting layers.

EFFECT: improvement of composite casting ensured by continuous inspection strength of joint of layers in the process of its manufacturing and increasing of working efficiency ensured by elimination of annealing process during the composite casting manufacturing.

2 cl, 4 dwg

FIELD: engineering industry.

SUBSTANCE: invention refers to engineering industry and may be used for production of parts for space and earth dedication, namely sphere-conical-cylindrical panels of nose fairing of carrier boosters, adapter sections, instrument modules and platforms. On the full-size form there put is prepreg of inner base layer and reinforced area from carbon fiber-reinforced plastic in a form of soaked by binding agent of carbon filling compound, perforated glue film, aluminium honeycomb core with inserts, perforated glue film and prepreg of outer base layer from carbon fiber-reinforced plastic in a form of soaked by binding agent of carbon filling compound. Aluminium honeycomb core and inserts are fixed by glass bands duplicated with glue film strips. Obtained structure is bonded under vacuum pressure in furnace with simultaneous hardening of base layers prepregs and reinforced areas.

EFFECT: increase of structure production effectiveness, simplification of structure manufacturing, decrease of labour coefficient and assembly work volume, improvement of parts quality.

FIELD: technological processes.

SUBSTANCE: invention is related to methods for moulding of multilayer material. Method includes installation of, at least, one internal layer between the first external layer and second external layer. At that specified fist external layer and specified second external layer, each one, contain nonwoven composite material, which includes thermoplastic fibers and absorbing staple fibers. At that absorbing staple fibers consist of more than 50 wt % of specified nonwoven composite material, and specified internal layer comprises nonwoven layer made of around 100 wt % of thermoplastic fibers. Then method includes ultrasonic lamination of specified internal layer, specified first external layer and specified second external layer. At that ultrasonic lamination provides for pattern surface texture on at least one side of multilayer material.

EFFECT: improved strength and softness of final product, improvement of absorbing property for wide use.

16 cl, 1 ex, 5 tbl 3 dwg

FIELD: technological processes.

SUBSTANCE: invention is related to method and device for application of coats on parts. During application of coating parts are placed in tray, which is turned by approximately 180° on completion of coating application process, as a result, parts with applied film coat connected to each other by common film fall out from tray and may be split. Process of coating application is carried out with application of tray loaded from both sides, at that reverse turn of tray after parts removal that existed so far is excluded.

EFFECT: invention is used for application of coat on plane parts, in particular, on front surfaces of furniture, with the help of film.

10 cl, 7 dwg

FIELD: technological processes.

SUBSTANCE: invention is related to method and device for application of coats on parts. During application of coating parts are placed in tray, which is turned by approximately 180° on completion of coating application process, as a result, parts with applied film coat connected to each other by common film fall out from tray and may be split. Process of coating application is carried out with application of tray loaded from both sides, at that reverse turn of tray after parts removal that existed so far is excluded.

EFFECT: invention is used for application of coat on plane parts, in particular, on front surfaces of furniture, with the help of film.

10 cl, 7 dwg

FIELD: construction.

SUBSTANCE: method includes preliminary heating of base polymer layer, preferably, from 100°C to 130°C, cold application of wear layer from thermoplastic polymer in the form of sheet or film onto previously heated layer of base, pressing and melting of wear layer onto base layer in heating furnace by means of heated gas injected under pressure with their heating from 120°C to 180°C, and cooling of manufactured product. Method makes it possible to produce multilayer product with proper physical and chemical properties, especially regarding internal cohesion, adhesion between layers that make the product, thermal properties, mechanical resistance to wear and impacts, resistance to chemical effects and transparency of surface wear layer.

EFFECT: high quality of external view of product surface.

11 cl, 1 dwg

FIELD: construction.

SUBSTANCE: method includes preliminary heating of base polymer layer, preferably, from 100°C to 130°C, cold application of wear layer from thermoplastic polymer in the form of sheet or film onto previously heated layer of base, pressing and melting of wear layer onto base layer in heating furnace by means of heated gas injected under pressure with their heating from 120°C to 180°C, and cooling of manufactured product. Method makes it possible to produce multilayer product with proper physical and chemical properties, especially regarding internal cohesion, adhesion between layers that make the product, thermal properties, mechanical resistance to wear and impacts, resistance to chemical effects and transparency of surface wear layer.

EFFECT: high quality of external view of product surface.

11 cl, 1 dwg

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