Paper pulp for the manufacture of base paper and coating materials
(57) Abstract:Paper pulp for the manufacture of base paper and coating materials containing fibrous semi-finished product, filler, color pigment, reinforcing additive and the coagulant, characterized in that it contains a hardening additive colloidal solution of silicic acid with pH = 7.5 to 9.5 and residual alkali 5 - 15%, which is the product activation 0,8 - 2,0%-aqueous solution of sodium silicate inorganic acid or sulfate or aluminum chloride aged for 0.5 to 2.0 hours, and as a coagulant - containing aluminum coagulant in the following ratio, wt. including:
Fibrous semi-finished product - 100
Filler - 5 - 20
Color pigment - 2 - 10
The Sol of silicic acid - 2 - 8
Aluminium coagulant - 0,5 - 2,0 about
FIELD: technological processes; chemistry.
SUBSTANCE: invention can be used to manufacture attrition-resistant paper in production of laminated panels for floor covering. The paper is impregated by resin and contains attrition-resistant particles, consisting of silicium carbide, aluminium and/or corundum oxide. The particles are covered by silaned adhesion activating agent and are built into the resin matrix. The method of paper manufacturing includes impregnating the paper with resin, spreading attrition-resistant particles along, coated by adhesion activatin agent, along the paper, and then curing the resing by pressurising the paper with other impregnated paper, or with fibers and resin along with heating. The device used to spread the particles along the paper includes rotating shaft with recesses and the brush, located near the shaft, and installed so that to sweep the particles out of the recesses, as well as device to move the paperalong under the shaft. Laminated panel consists of ornamental paper, coated by attrition-resistant layer, applied to base plate, made from wood.
EFFECT: increase of paper attrition resistance and simplificaiton of manufacturing method.
11 cl, 3 dwg
FIELD: textiles, paper.
SUBSTANCE: wear proof particles are treated with adhesion promoter based on silane or sylon and then deposited on paper, impregnated with resin, thereby obtaining coating. Fibre is electrically charged and put onto the coating. Drying is then carried out. The device for implementing the given method has a equipment for depositing wear proof particles on paper, equipment for charging fibre and putting the charged fibre onto the paper. The latter consists of a roller with depressions, made with provision for rotating, and a brush mounted near the roller for cleaning the depressions. The device also has apparatus for electrically charging the roller and/or the brush and the roller, which is made with provision for rotation and passing paper sheets under the roller with depressions. Paper, made using this technique, has a wear proof coating and electrically charged fibres on the wear proof coating. The charged fibres used can be made from polyester and/or cotton, and/or cotton linter.
EFFECT: obtaining wear proof paper with improved properties.
14 cl, 3 dwg
SUBSTANCE: coating is a matrix material into which a mixture of high-strength particles having an irregular shape and spherical solid particles essentially without cutting edges are added. The high-strength particles have Mohs hardness of at least 6, and the solid particles have Mohs hardness of at least 3, where the average diametre of the solid particles is equal to or less than the average diametre of the high-strength particles. The matrix material is a synthetic resin based on melamine, acrylate, epoxide, polyurethane, polyamide, polyester, polyimide, caoutchouc, rubber or mixtures thereof. Said wear-proof coating can be used to make wear-resistant surfaces on wooden materials, decorative paper or wood-fibre boards having a decorative print, in making parquet floors, laminated floors, furniture surfaces and working surfaces, as well as for making wear-resistant surfaces of layers on substrates made from metal, glass, ceramic, plastic, concrete or other materials.
EFFECT: high wear resistance of the wear-proof coating without increasing wearing of the press plate or belt press.
16 cl, 2 dwg, 6 tbl
SUBSTANCE: ground contains cation water-fast additive, alkaline glueing agent and anion activator in specified amount. Anion activator it contains is a component selected from group, including polyacrylate, sulfonate, carboxymethylcellulose and galactomannan hemicellulose. Ground paper has pH from approximately 7.0 to approximately 10, and strength of internal link from approximately 25 to approximately 350 millifeet per pound per square inch. This ground paper is produced by contact of a certain amount of cellulose fibres with water-fast additive, alkaline gluing agent and anion activator, serially and/or simultaneously.
EFFECT: improved physical properties of ground paper and expanded assortment of paper tapes to cover joints.
22 cl, 1 dwg, 1 ex
FIELD: printing industry.
SUBSTANCE: decorative paper contains a paper base and an ink-absorbent layer. At the same time the ink-absorbent layer is dyed so that the decorative paper after soaking with impregnating resins and pressing as laminate has the same dye, as well as dyeing of laminate from decorative paper, which does not include the ink-absorbent layer. The latter contains a dyeing pigment and/or colorant in the amount rated for a weight of a dry absorbent ink and makes from 45 to 75%.
EFFECT: reduced quantity of a filler and a pigment in the paper base without deterioration of coverage of the proposed decorative paper.
8 cl, 3 tbl, 9 ex
SUBSTANCE: paper surface is treated with glue, including water, a latex binder and a mineral filler with the specified ratio of components. The latex binder is selected from the group, including ethylene polyvinyl acetate, polyvinyl acetate latex, styrene butadiene rubber, acrylic and vinyl acrylic rubber. A sheet material is also proposed to line a gypsum wall board, as well as the method to produce treated paper and glue for surface treatment.
EFFECT: higher strength of a wall board by using a smaller ratio of water-gypsum, its improved characteristics with provision of lower energy consumption.
46 cl, 2 tbl, 4 ex
FIELD: textile, paper.
SUBSTANCE: paper base is designed to form a decorative material of a coating. It represents a non-processed paper containing a white pigment and/or fillers and is coated with a covering solution, containing at least one water-soluble modified starch with special distribution of molecules according to molecular weight. Also a decorative paper or decorative material is proposed to form coatings with application of the above-specified paper-base.
EFFECT: improved quality of a finished product due to increased inner strength of fixation with high non-transparency and other mechanical properties, improved stability of paper size stability and increased average size of its pores.
7 cl, 2 tbl, 6 ex
FIELD: printing industry.
SUBSTANCE: decorative impregnated paper for printing by means of ink-jet printing method is designed for manufacture of decorative laminates which are used as building material during furniture fabrication and for interior finish. This kind of paper includes impregnated paper base and paint receiving layer. Paper base includes resin for impregnation in quantity of 40 to 250 wt %. In relation to the mass of paper base. After drying the paper has sufficient humidity which is at least 3.5% and spreading of more than 0.4%. Also, method for obtaining the above paper and its use are described.
EFFECT: better coating quality.
12 cl, 2 ex
FIELD: textile, paper.
SUBSTANCE: paper product includes at least two layers. The method includes the following: (i) provision of aqueous suspension that contains cellulose fibres; (ii) adding microfibrillar polysaccharide into suspension in amount sufficient to produce from approximately 0.05 to approximately 50 wt % relative to mass of cellulose fibre; (iii) dehydration of the produced suspension and moulding of the first layer, which has density from approximately 150 to approximately 500 kg/m3, of the specified layer paper product. Also refers to a version of the method for production of a layer paper production, and also to a layer paper product itself (its versions) and to application of a layer paper product.
EFFECT: improved ability to bind fibres in at least one inner layer of a paper product, improved resistance to product bends, higher compression strength, resistance to lacing, bend, Z-strength, stiffness index, compression strength in case of lower density of a paper product.
23 cl, 7 tbl, 5 ex
FIELD: textile, paper.
SUBSTANCE: wallpaper substrate consists of a multilayer paper web with lower and upper sides. The lower side of the web faces a wall when applied. The upper side faces a room. Between the sides there is a lower layer and a fibrous upper layer arranged in direction from the lower side to the upper side. The fibrous lower layer is made of a mixture of fibrous materials based on cellulose and synthetic fibres. The fibrous upper layer is made of a mixture of fibrous materials based on cellulose. At the same time the upper and lower layers are interwoven with each other by means of moist pressing in a couch press. The upper side is satined and is arranged as sealed for direct printing. In particular, for deep printing with a maximum of 1 gap per 1 cm2.
EFFECT: improved quality of wallpapers.
24 cl, 1 dwg, 1 ex