Layered material on a paper basis for the manufacture of heating elements

 

(57) Abstract:

The essence of the invention, the layered material consists of a conductive layer made of a carbon paper, and located on both sides of the insulating coating, the Coating is made from a synthetic film, wood and/or paper, or cardboard layers. Wood and cardboard layers placed on the film side, not adjacent to a carbon paper, or between the film layers, Paper layers placed between the layers of film as fibre layer material contains a wood-fiber plate, as carbon fiber paper - specified paper without binder 1 C p f-crystals, 1 table.

 

Same patents:

FIELD: pulp and paper industry.

SUBSTANCE: the invention is dealt with a pulp and paper industry. The paper or cardboard laminate contains at least one forming volume layer called as a volumetric layer, consisting by 40-98 % from cellulose fibers with a milling degree equal to 550-950 ml according to the Canadian standard device, and at least one secondary layer located at least on one side of the volumetric layer and having a higher density, as compared with the volumetric layer. The secondary layer and the basic layer are fused to each other in essence by all their opposite surfaces, and the laminate has a factor of rigidity at bending exceeding 2.5 Nm7/kg3, but less than 14 Nm7/kg3, calculated as a geometric average value for a longitudinal direction and a transverse direction. According to the invention, between the volumetric layer and the secondary layer there is a thin intermediate layer, which has the bigger value of resistance to removal of water, than the volumetric layer, and the basic weight at least of 2 g/m2 but less than 20 g/m2 and which is formed together with the volumetric layer. The invention also offers a method of production of paper or cardboard laminate and ensures achievement of a high strength at the low share of a binder, and also prevention of wrinkles.

EFFECT: the invention ensures achievement of a high strength of the laminate at the low content of a binder and prevention of wrinkles.

27 cl, 17 dwg, 6 tbl, 3 ex

FIELD: mechanical working or deformation of paper or cardboard.

SUBSTANCE: method comprises making cardboard product that has at least two layers and gluing the cloths of raw cardboard material which define the layers of the product. At least on of the cloths is worked mechanically in dry condition, preferably no more than 12% of humidity, by means of extruding a relief pattern on it in order to deform the surface of the cloth uniformly. The cloths are glued to each other.

EFFECT: enhanced efficiency.

14 cl, 1 dwg

FIELD: papermaking.

SUBSTANCE: pre-impregnate is manufactured by impregnation of crude paper with thermosetting formaldehyde-free resin until content thereof 10 to 70%. Residual moisture content in pre-impregnate is 2-3%. Resin contains: at least one radical-polymerization polymer with less than 5% of α,β-ethylenically unsaturated mono- or dicarboxylic acid; at least one radical-polymerization polymer containing more than 5% of α,β-ethylenically unsaturated mono- or dicarboxylic acid; and at least one alkanolamine with at least two hydroxyl groups; or resin contains at least one radical-polymerization polymer with 5-100%, particularly 5-50%, or more particularly 10-40% of α,β-ethylenically unsaturated mono- or dicarboxylic acid and at least one above alkanolamine.

EFFECT: improved quality of surface, printing properties, delamination resistance, and varnishing capacity.

16 cl, 3 dwg, 2 tbl, 2 ex

FIELD: paper and pulp industry.

SUBSTANCE: method comprises applying glue at least on the first layer by passing the first layer between the counter-pressing cylinder and roller for batching glue, setting the second layer in the region of the first layer and in the contact with the glue applied on the first layer, and gluing the first layer to the second layer between the counter-pressing cylinder and gluing roller. The glue is applied in the zones of projecting bosses provided on the glue batching roller . The density and sizes of the bosses are chosen to provide sufficient amount of glue between two layers. The device comprises counter-pressing roller provided with a number of bosses and engaging the batcher of glue, pressing roller, and gluing roller.

EFFECT: enhanced adhesion.

40 cl, 8 dwg

FIELD: food industry; packing.

SUBSTANCE: invention relates to packing material containing base paper or cardboard layer for packing container formed by bending and welding the sheet, or flat blank of packing material. Laminated packing material has base paper or cardboard layer and outer coatings from both sides of base layer made of thermoweldable polymer impermeable to liquids. Said paper or cardboard base layer is made water-repelling by sizing the mass by water dispersoid solution or emulsion of alkylketene dimer or mixture of alkylketene dimers so that content of alkylketene dimer (dimers)in base layer is from 0.25 to 0.4 by dry weight, weight %. Invention contains description of method of manufacture of laminated material and packing container to be sterilized.

EFFECT: provision of laminated packing material protected from penetration of hot steam or liquid designed for packing food products and capable of withstanding heat treatment in autoclave at high humidity and temperature without separation of packing material into layers.

6 cl, 2 dwg

FIELD: construction materials industry; production of the moldable decorative laminated material.

SUBSTANCE: the invention is pertaining to the moldable complicated decorative laminated material, which contains the polymer impregnated decorative layer made out of the bilateral expansible decorative paper and the core polymer impregnated layer formed out of the bilateral extendable kraft-paper. The laminated material is used for production of the different products requiring the molding concerning the surface of the complicated form, in particular, to the packet made out of the laminated material. The board made out of the laminated material has the moldable base in addition to the decorative layer. The method of manufacture of the moldable decorative laminated material includes the following operations: treatment of the decorating paper, its impregnation, the treatment and impregnation of the kraft-paper, the layer by layer stacking and joining of the layers of the decorative and kraft-paper under pressure with their preliminary impregnation with the phenol-formaldehyde polymeric compound. The technical result of the invention is improvement of the surface properties of the decorative laminated material.

EFFECT: the invention ensures improvement of the surface properties of the decorative laminated material.

37 cl, 8 dwg

FIELD: construction materials industry; other industries; production of the plates produced by the direct lamination.

SUBSTANCE: the invention presents the plate of the direct lamination. The purpose of the invention is creation of the plate of the direct lamination, so that in it the graphics image of the relief shall correspond to the relief reconstruction of its surface. At that it is possible to use the hot pressure moderate for the decorative layer. The plate is manufactured by the method of the hot pressing of the core with the resin-saturated absorbing layers including the surface with one decorative layer containing the graphics image of the surface of the imitated material. The plate also contains the deposited on the decorative layer transparent covering layer with the relief reconstitution of the surface structure of the imitated material. Between the decorative layer and the core there is the intermediate resin-containing layer made in the form of the prefabricated separate adhesive layer with the saturating resin. The given version has the technological advantages at manufacture of the plates of the big dimensions, and also allows to manufacture the plates having the structured surfaces, at that the structure precisely coincides with the graphics image of the below located decorative layer.

EFFECT: the invention ensures creation of the plate of the direct lamination, which graphics image of the relief precisely corresponds to the relief reconstruction of its surface and the given version has the technological advantages at manufacture of the plates of the big dimensions.

3 cl, 2 dwg

FIELD: banking system.

SUBSTANCE: invention relates to valuable documents with increase period of circulation, such as bank notes, cheques, passports, identity cards or other similar documents, to paper protected from forcing for use in making of valuable documents and method of making of valuable documents and method of production of force-protected paper and like valuable documents. Valuable documents is made on paper sheet which is provided with local strengthening passing along at least part of one or several edges of paper sheet. Strengthening is made using one or several means chosen from group consisting of fibers, layer of lacquer and strips of film material. Proposed valuable document features increased tear resistance and possibility of longer circulation and by other characteristics it does not differ from known valuable documents.

EFFECT: increase service life of valuable documents.

35 cl, 12 dwg

FIELD: packages, particularly wrappers.

SUBSTANCE: wrapping material comprises laminate including at least one flat paper layer and at least one additional corrugated paper layer with wave amplitude defined in direction transversal to additional paper layer movement. The flat and corrugated paper layers are connected with each other by means of adhesive. Additional paper layer also includes substantially parallel wave system with amplitude defined in additional paper layer movement plane.

EFFECT: increased rigidity without material weight increase, improved voluminosity and wear resistance, enhanced printability.

5 cl, 2 dwg

FIELD: textiles; paper.

SUBSTANCE: sheet consists of first and second plaits made from cellulose wool with specific weight of 10 to 40 g/m2, imprinted and gathered together in such a way that, projections (100', 200'), forming the imprinted pattern are directed inside the sheet and form grooves in between them. In this case, the first plait (F1) consists of the first projections (100') in the form of a truncated cone, with a round or oval cross section, surface area, crests of which are between 0.3 and 4 mm. The second plait (F2) consists of second projections (200') in the form of a truncated cone, located opposite the first projections (100') in such a way that, the first projections (100') cannot be located between the second projections (200').

EFFECT: increased softness of the sheet.

13 cl, 8 dwg

FIELD: technological processes.

SUBSTANCE: method includes application of acrylic foam paint on fibrous base, subsequent preliminary drying of applied layer at the temperature of 80-120°C and foaming of acrylic foam paint layer by means of drying at the temperature of 120- 160°C. Prior to application of acrylic foam paint on fibrous base printed pattern is applied, and prior to foaming 25-30% aqueous solution is applied onto layer of acrylic foam paint, at that solution contains binding agent on the basis of polyvinyl acetate copolymer and decorative material at their ratio accordingly from 1:1 to 1:0.2 in amount of 8-10% from foam paint mass. At that application of foam paint is carried out with mass of dry coating of 10-25 g/m2. In suggested method decorative material is material selected from group that contains polyethylene terephthalate and aluminium foil with particle size of 0.1-0.5 mm. As binding agent on the basis of polyvinyl acetate copolymer composition is used that contains dispersion of polyvinyl acetate copolymer dispersion, defoaming agent, biocide and water.

EFFECT: expansion of foamed wallpapers assortment.

4 cl, 2 ex

FIELD: textile industry, paper industry.

SUBSTANCE: method relates to wallpaper production using foam paint. Method of wallpaper production includes spreading of acrylic foam paint over fibrous base at mass of dry coating 15-25 g/cm2 on both stages, and before that the first layer is dried at 80-120°C. The layers of foam paint are spread over fibrous base on both stages at ratio of the first layer and second layer of foam paint correspondingly from 1:1 to 1:0.5. Whereafter decorative material from air in number of 7-10% from mass of foam paint is spread over the layers of foam paint. Thereafter the layers of foam paint are foamed by drying at 120-160°C. Before spreading of acrylic foam paint over fibrous base printed pattern is applied on fibrous base. Acrylic foam paint of one composition can be applied during both stages, or foam paint containing 1-7% of polyurethane can be used in the second stage. Material selected from the group containing particles of polyethyleneterephthalate and aluminium foil containing particles with size of 0.1-0.5 mm is used as a decorative material according to the suggested method.

EFFECT: diversification of foamed wallpaper.

4 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to paper industry, particularly to wallpaper with layer of adhesive substance on opposite side. Described is wallpaper with layer of adhesive substance, which contains: A) cellulose ether, converted in form of slow action (retard-form); B) pH-regulator for alkaline area over 8; C) capable for swelling, water-insoluble in polymer with milting degree from 5 to 2. Also described is method of wallpaper manufacturing.

EFFECT: obtaining wallpaper, ensuring good ability for movement during smoothing.

14 cl, 2 dwg, 4 ex

FIELD: chemistry.

SUBSTANCE: substrate has a paper base containing cellulose fibre from deciduous wood with particle size smaller than 200 mcm after grinding in amount of not more than 45 wt % and average fibre length between 0.4 and 0.8 mm and filler in amount of 5-40 wt %, particularly 10-25 wt % in terms of the weight of cellulose.The substrate at least contains one polymer layer lying at least on one side of the paper base. There is a layer with a binding agent between the polymer layer and the paper base. The binding agent is a hydrophilic film-forming polymer made from hydroxypropylated starch and/or thermally modified starch. This layer may contain a pigment in form of calcium carbonate, kaolin, talc, titanium dioxide and/or barium sulphate.

EFFECT: reduced limpness and obtaining pure-bred production wastes.

27 cl, 3 tbl

FIELD: printing.

SUBSTANCE: invention relates to manufacture of packaging materials, in particular, to a method of manufacturing metallised label paper. The method includes the application of polymer varnish on base paper in at least two layers. The first varnish layer is applied by the method of direct printing, and the second layer by the method of reverse printing. Clamp of the paper to the plate shaft in the method of the reverse printing is carried out from the top with two shafts in which when lowering the lower line of the generatrix is located below the upper line of the generatrix of the plate cylinder, and the shafts are located on opposite sides of the plate cylinder. The diameter of the plate shaft applying the second layer of polymer varnish by the method of reverse printing is greater than the diameter of the shaft of the direct printing, which is 191-192 mm, by 8-9%. The viscosity of the varnish applied by the method of reverse printing is lower than the viscosity of the varnish applied by the method of direct printing. Then, on the layer of varnish a metal coating and a layer of varnish is applied, the mesh back side of the paper is moistened, and embossing of the paper is carried out.

EFFECT: invention provides improvement of quality of label paper by eliminating the formation of "ripples" on the surface of the varnish, and stability of the paper characteristics when change of ambient humidity.

2 cl, 1 tbl, 1 ex

FIELD: paper-and-pulp industry.

SUBSTANCE: when ground paper is manufactured, it is coated with ink-accepting coating. The latter contains latex binder, water-soluble binder, pigment mixture of amorphous silica with colloidal cationic silica and colloidal alumina, and ink-fixing agent. Coating operation is performed in two steps, weight ratio of coating applied in the first step to that in the second step ranging from 0.34:1 to 0.66:1. Reverse face of base paper is coated by detwisting coating. Further, coating is ennobled via superglazing at pressure in supercalender roll gap 30-75 bar.

EFFECT: improved workability of process and improved quality of paper due to increased surface strength.

4 cl, 7 ex

FIELD: paper coated with composition for coating various kinds of paper, for offset printing of paper used for manufacture of books, magazines, annual reports, or packaging paper.

SUBSTANCE: composition comprises pigments and binder. Composition pigments are formed as microballs having sizes below 10 micrometers, preferably about 7 micrometers. Paper coated with such composition is silky by touch and has at least one surface coated with such composition, preferably both of its surfaces. This paper may be tracing paper.

EFFECT: improved quality of paper owing to preventing sliding thereof during separation of sheets in stacks, delamination of coating during printing process and, accordingly, elimination of paper dusting and formation of impure imprints.

7 cl, 2 dwg, 2 tbl, 13 ex

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, water-soluble binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which glossy surface is formed. Coating composition is supplemented by wettability controlling agent based on polydimethylsiloxane resins in amounts 0.4 to 1.6% of the weight of pigment. Water-soluble binder is a mixture of polyvinyl alcohol with polyvinylpyrrolidone at ratio (90-50):(10-50) in amount 40-60% and styreneacrylic latex in amount 15-20% of the weight of pigment. When forming glossy surface, polyethylene oxide-based plasticizer is used in amount 7-15% of the weight of pigment followed by supercalendering at pressure in roll contact zone 20-25°C and temperature 50-90°C.

EFFECT: improved manufacturability of process.

5 cl, 1 tbl, 54 ex

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which coating is ennobled by means of supercalendering. As pigment, mixture of amorphous silicon dioxide with calcium carbonate or kaolin with outer specific surface 60-85 m2/g at ratio (25-50):(75-50). Binder is a mixture of polyvinyl alcohol with latex selected from class of styreneacrylic copolymers at ratio (20-25%):(7-18%) based on the weight of pigment. Cationic fixative is poly(diallyldimethylammonium chloride), which is directly incorporated into coating composition in amount 5-10%.

EFFECT: enabled image quality and paper surface strength control.

3 cl, 1 tbl, 13 ex

FIELD: production of ink-jet printing paper with special pigment coat applied thereto.

SUBSTANCE: method involves manufacturing paper-base; applying onto one side of paper-base ink-perceptive coat consisting of pigment, binder and cationic fixative; applying onto opposite side of paper-base curling-preventive coat; refining both surfaces of paper; using mixture of amorphous silicon dioxide and calcium or kaolin carbonate as ink perceptive pigment for coat, said mixture having specific outer surface less than 20 m2/g in the ratio of (75-45):(25-55); using polyvinyl alcohol as binder in an amount of 20-25% by weight of pigment; using polydiallyl dimethylammonium chloride as cationic fixative.

EFFECT: improved printing characteristics and increased paper surface strength.

3 cl, 1 tbl, 7 ex

FIELD: pulp-and-paper industry, in particular, paper sheet having surface feeling hash to the finger, and method for applying coating onto paper sheet.

SUBSTANCE: paper sheet of such structure may be used for manufacture of paper or plastic medium for carrying of printed information, paper or plastic package, cover used in stitching and binding processes, or cardboard or plastic carton having surface feeling hash to the finger. At least one side of paper sheet is coated with layer containing non-compressible microscopic particles of non-gelatinized starch grains, or said particles are produced by grinding of plastic material. Method involves treating at least one side of paper sheet with water-based composition containing non-compressible microscopic particles which are made three-dimensional and rounded, binder, and filler; drying paper sheet after treatment. Particles are non-gelatinized starch grains, or particles are produced by grinding of plastic material. Method allows paper sheet to be produced, which has roughness coefficient Kd below 0.5.

EFFECT: simplified method and improved quality of paper sheet.

17 cl, 16 dwg, 1 tbl, 3 ex

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