Cover composition, method of coating cover, coated substrate, packaging material and packaging for liquid

FIELD: chemistry.

SUBSTANCE: surfactant is a water-soluble non-ionic ethoxylated alcohol of the formula RO(CH2CH2O)xH, wherein R is iso-C13H27 and x is 8 or R is iso-C10 and x is 5 or 7. The solids content in the composition is from 4 to 20 wt %. A method for applying a gas impermeable layer to a substrate using a coating composition and a coated substrate having at least one gas impermeable layer obtained by applying a coating composition to the substrate is also described. In addition, the present invention relates to a packaging material comprising a coated cardboard on which a coating composition is applied and a liquid package containing such a packaging material.

EFFECT: ensuring the stability of the coating applied by the irrigation at a value of dynamic surface tension up to 50 mN M and ensuring faultless operation at very low flow rates, high quality protection combined with an acceptable small number of point defects.

14 cl, 8 dwg, 1 tbl

 



 

Same patents:

FIELD: paper industry.

SUBSTANCE: paper product comprises a substrate selected from paper or cardboard, and a coating on the substrate with voids in it. The coating on the substrate comprises a water soluble polymer. The water-soluble polymer is selected from a group consisting of starch, waxy corn starch, protein, polyvinyl alcohol, casein, gelatin, soybean protein, and alginates. The coating additionally comprises a crosslinking agent. The paper product is substantially free of an elastomeric material. A method of processing a substrate for the paper product comprises coating an aqueous solution of the polymer on the film substrate, fixation of an aqueous solution of the polymer by contacting of the aqueous solution of the polymer with a heated surface up to formation of voids in the film. The phase of fixation comprises at least a partial drying of aqueous polymer solution.

EFFECT: obtained paper product is characterised with improved smoothness with no increase in density and has excellent printability.

27 cl, 3 ex, 1 tbl, 17 dwg

Coating for media // 2296786

FIELD: compositions for protecting coatings.

SUBSTANCE: coating comprises composition base on dispersion of acrylic polymers, or dispersions of acrylic-styrene copolymers, or polyurethane dispersions, or polyetheracrylate.

EFFECT: enhanced reliability.

26 cl, 2 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: manufacture of building materials.

SUBSTANCE: heat-retention wall-paper is composed supporting paper, aluminum-based metallized layer in contact with it, intermediate protective polymeric layer, and decorative layer. Metallized layer is made by way of transferring metal from metal-carrying film. Intermediate protective polymeric layer contains (meth)acrylic acid ester/styrene copolymer. Decorative layer is applied by aqueous paint based on (meth)acrylic acid ester.

EFFECT: improved decorative properties of wall-paper.

3 cl, 1 tbl, 5 ex

The invention relates to the production of multilayer material is paper-based, designed for packaging of bulk products by hot pressing the material forms of polyvinyl chloride (PVC)

FIELD: paper industry.

SUBSTANCE: paper product comprises a substrate selected from paper or cardboard, and a coating on the substrate with voids in it. The coating on the substrate comprises a water soluble polymer. The water-soluble polymer is selected from a group consisting of starch, waxy corn starch, protein, polyvinyl alcohol, casein, gelatin, soybean protein, and alginates. The coating additionally comprises a crosslinking agent. The paper product is substantially free of an elastomeric material. A method of processing a substrate for the paper product comprises coating an aqueous solution of the polymer on the film substrate, fixation of an aqueous solution of the polymer by contacting of the aqueous solution of the polymer with a heated surface up to formation of voids in the film. The phase of fixation comprises at least a partial drying of aqueous polymer solution.

EFFECT: obtained paper product is characterised with improved smoothness with no increase in density and has excellent printability.

27 cl, 3 ex, 1 tbl, 17 dwg

Pigment composition // 2461595

FIELD: chemistry.

SUBSTANCE: water-based pigment composition contains polyalkylene glycol, having average molecular weight Mw from approximately 5000 to approximately 75000, and inorganic pigment particles containing colloidal particles based on silicon oxide or silicate or aggregates thereof. The amount of polyalkylene glycol ranges from 50 to 100 wt % with respect to the total amount of organic material in the composition, and the weight ratio of said colloidal particles to the organic material ranges from 1:3 to 30:1.

EFFECT: invention also relates to a method of producing said composition, use thereof to coat paper or cardboard, a method of obtaining coated paper or cardboard.

25 cl, 2 tbl, 4 ex

FIELD: textile fabrics, paper.

SUBSTANCE: aqueous solutions are related to toluylene optical bleaches and may be used in production of chalk overlay paper of high whiteness. Aqueous solutions contain at least one optical bleach, polyvinyl alcohol, having extent of hydrolysis over 75% and Brookfield viscosity of 2-40 mPa·s, and water. This composition may be used for paper coating. It may be applied on paper after its moulding to produce chalk overlay paper.

EFFECT: provision of stability in storage of aqueous solutions of toluylene optical bleaches and simplified method for production of chalk overlay paper.

9 cl, 3 tbl, 3 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.

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: 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; methods of production of the pigment for manufacture of the cardboard and paper.

SUBSTANCE: the invention is pertaining to the method of production of the pigment for manufacture of the cardboard and paper and may be used in pulp and paper industry at production of the filled paper, the coated paper and the cardboard. In the water at intense stirring feed powders of calcium hydrate and calcium carbonate at the ratio of the indicated components accordingly from 1.0:2.2 up to 1.0:12.9. The produced suspension is gradually added with aluminum sulfate at its ratio to the total mass of the calcium hydroxide and calcium carbonate from 1.0:0.85 up to 1.0:4.30. Then the temperature of the mixture is increased up to 8О-85°С and the produced reaction mixture is kept at stirring within 90-180 minutes with formation of the dispersion of the pigment with the share of the dry substances in it equal to 20-35 %. Then the dispersion is dried and grinded into the powder. The powder is dispersed in the water containing the given amount of the dissolved coolant and-or binding - starch or polyvinyl alcohol. The technical result of the invention production of the pigment with the new properties, that allow to expand the field of its application at manufacture of various types of the cardboard and the paper.

EFFECT: the invention ensures production of the pigment with the new properties, expansion of the field of its application at manufacture of various types of the cardboard and the paper.

2 tbl

FIELD: paper-and-pulp industry.

SUBSTANCE: invention relates to pigment, which can be used in manufacture of paper with filler, coated paper, and cardboard. Calcium hydroxide and calcium carbonate powders taken in proportion between 1.0:2.2 and 1.0:23.5 are added to vigorously stirred water, after which temperature of mixture is raised to 80-85°C and resulting reaction mixture is kept being stirred for 90-180 min to form dispersion of pigment containing 20-35% solids.

EFFECT: improved quality of pigment at lower cost and extended application area.

3 tbl

The invention relates to a method of making a composition used in the paper industry for the application of surface coatings on paper

The invention relates to compositions of decorative coatings paper for Wallpaper and can be used in the manufacture of Wallpaper

FIELD: textiles, paper.

SUBSTANCE: invention relates to pulp and paper industry and relates to a method and system of use of starches with a low content of fatty acids in the sizing composition for paper, to inhibit the precipitation of multivalent salts of fatty acids. The method of inhibiting the precipitation of multivalent saturated fatty acids on the equipment and/or devices for sizing of paper consists in using the composition for sizing the paper surface, containing elevated levels of starch solids for sizing the surface, and the source of polyvalent cations, such as drying salt of multivalent metal, by including (wholly or partially) one or more starches with low content of fatty acids for sizing the surface in the composition for sizing the paper surface.

EFFECT: invention provides a sized paper having improved properties.

24 cl, 4 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to compositions for coating of printing paper, at that the said compositions comprise microfibrillated cellulose (MFC) and one or more polysaccharide hydrocolloids, and the application of the said compositions. In addition, the invention relates to the coated paper comprising a first layer of polysaccharide hydrocolloid(s) and a second layer of MFC, and the use of the said paper.

EFFECT: reduction of garnetting or fuzzing of paper.

20 cl, 13 dwg

FIELD: textiles, paper.

SUBSTANCE: cardboard comprises solid cardboard substrate of bleached sulphate pulp (BSP) and a coating applied to the cardboard substrate to form a coated structure. The said coated structure has a surface density, thickness of the sheet and the Parker surface smoothness. The Parker surface smoothness is at most about 3 microns, and the surface density is at most about Y2 or Y3 or Y4 pound/3000 foot2, where Y2, Y3 and Y4 are functions of the said thickness (X) of the sheet in points which are calculated using the equation: Y2=3.71+13.14X-0.1602X2 or Y3=3.63+12.85X-0.1566X2, or Y4=3.50+12.41X-0.1513X2.

EFFECT: invention provides a coated cardboard with increased smoothness with the required parameters of thickness and the surface density to ensure high-quality printing.

13 cl, 10 dwg, 1 tbl, 6 ex

FIELD: textiles, paper.

SUBSTANCE: paper base is intended for internal and external sizing, which has high dimensional stability, and can be used in pulp and paper industry. Paper base contains cellulose fibers, at least one filler, and sizing agent. At that the paper base has a coefficient of hygroextension from 0.6 to 1.5%. The Scott internal constraint in the transverse direction is not greater than 300 J/m2, and/or Scott internal constraint in the longitudinal direction is not greater than 300 J/m2. Also a method of manufacturing the paper base and versions of paper base are proposed.

EFFECT: increased dimensional stability and durability of the surface of the paper base.

26 cl, 24 dwg, 15 tbl, 5 ex

FIELD: paper industry.

SUBSTANCE: paper product comprises a substrate selected from paper or cardboard, and a coating on the substrate with voids in it. The coating on the substrate comprises a water soluble polymer. The water-soluble polymer is selected from a group consisting of starch, waxy corn starch, protein, polyvinyl alcohol, casein, gelatin, soybean protein, and alginates. The coating additionally comprises a crosslinking agent. The paper product is substantially free of an elastomeric material. A method of processing a substrate for the paper product comprises coating an aqueous solution of the polymer on the film substrate, fixation of an aqueous solution of the polymer by contacting of the aqueous solution of the polymer with a heated surface up to formation of voids in the film. The phase of fixation comprises at least a partial drying of aqueous polymer solution.

EFFECT: obtained paper product is characterised with improved smoothness with no increase in density and has excellent printability.

27 cl, 3 ex, 1 tbl, 17 dwg

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