Method for the production of colored paper material

 

(57) Abstract:



 

Same patents:

FIELD: textile; paper.

SUBSTANCE: method consists of adding to the paper sheets approximately 0.05 pounds/ton to 15 pounds/ton, in accordance with the dry fibers, one or several polymers, functioning as aldehyde, containing amino or amido group, where, at least, 15 molar percent amino or amido group function with one or several aldehydes and where the functionaling aldehyde polymers have a molecular weight of not less than approximately 100000.

EFFECT: increased activity for drying due to a reduction in the amount of polymer.

14 cl, 5 ex

FIELD: textile, paper.

SUBSTANCE: according to one version, method includes provision of aqueous suspension that contains cellulose fibres. Addition of cation polysaccharide and polymer P2, which is an anion polymer, to produced suspension after all points of high polymer P1 shearing force, and P1 polymer is an anion polymer. Then water is removed from produced suspension to form paper. According to the other version, auxiliary agents are added for drainage and retention to produced suspension of cellulose fibres after all points of high shearing force. The latter are represented by a cation polysaccharide and polymer P2, being an anion polymer.

EFFECT: improved drainage without deterioration in retention and forming of paper, increased speed of paper-making machine and application of lower doses of polymer.

34 cl, 5 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to compositions of aldehyde-functionalised polymers, which are stabilised with inorganic salts, organic additives or combinations thereof, and to a method of prolonging the shelf life of the composition. Stabilising additives can be added to aldehyde-functionalised polymers until a stabilised aldehyde-functionalised polymer composition is formed at any stage of the functionalisation reaction. The composition contains one or more aldehyde-functionalised polymers with weight-average molecular weight of at least about 50000 g/mol. At least one stabilising additive contains as an inorganic salt alkali or alkali-earth metal salts, hydrates thereof and any combination thereof. The used organic additive can be diols, triols, polyols, glycerine, ethylene glycol, saccharides, urea and any combination thereof.

EFFECT: described is a method of producing a material having cellulose fibres, and use of the composition for producing cellulose fibre products in the papermaking process.

16 cl, 7 dwg, 2 tbl, 8 ex

FIELD: pulp and paper industry.

SUBSTANCE: invention relates to pulp and paper industry and relates to paper and a production method thereof. Paper is made by treatment of aqueous suspension of fibrous mass with a resin of functionalised aldehyde polymer and polyamidodiamino-epichlorohydrin resin. polyamidodiamino-epichlorohydrin resin is obtained via by first reacting epichlorohydrin with polyamidoamine to form aminochlorohydrin, which is then converted to azetidine, and obtained polyamidodiamino-epichlorohydrin resin has molar content ratio of epichlorohydrin to amine molar content of about 0.01 to 0.4, and obtained polyamidodiamino-epichlorohydrin resin has azetidine content of approximately 40 % or less.

EFFECT: invention provides paper with improved strength.

13 cl, 1 dwg, 7 tbl, 12 ex

FIELD: textile, paper.

SUBSTANCE: additive producing method is that the reaction vinylformamide with styrene or substituted styrene is carried out under the conditions of free radical emulsion polymerization. The first polymeric product is obtained, it comprises randomly distributed repeating units of formula (I) and (II), in which Ar is an aromatic moiety selected from the group consisting of phenyl and phenyl substituted by alkyl; R1 is hydrogen or alkyl; x and y are numbers that are greater than 0 moll. %, and the sum of x and y is 100 moll. %, the x:y ratio ranges from 99:1 to 50:50. Further hydrolysis of the first polymeric product is carried out by treatment with an acid or base. The second polymer product is obtained, it represents a terpolymer comprising randomly distributed repeating monomer units described by at least two formulas (III), (IV), (V) and (VI), wherein R2 and R3 are H; R4 is H or alkyl; m1 and m2 independently stand for a positive number of moll. %, and m3 and m4 independently can be from 0 to 99 moll. %, and the sum of m1, m2, m3 and m4 is equal or less than the x moll. % of the formula (I). The first polymeric product is in the form of microparticles which have size in the range from 50 to 200 nm. The second polymeric product is in the form of microparticles in an aqueous dispersion, and its viscosity measured at ambient temperature of 20 to 25°C at a content of active solids, lying in the range from 13.0 to 18.0%, is in the range of 100 to 500 cps. A paper product comprises an additive of vinyl amine - vinyl formamide terpolymer.

EFFECT: increased paper strength in wet and dry conditions.

18 cl, 5 tbl, 5 ex

FIELD: paper industry.

SUBSTANCE: anti-deception paper (1) consists of multi-layer ready-to-crease substrate with paper layer (4), its both sides being furnished with film (6) provided with protective sign covering completely the aforesaid paper layer surface.

EFFECT: dirt-repellant properties and higher strength of paper.

19 cl, 11 dwg

FIELD: textile, paper.

SUBSTANCE: protected against forgery paper is intended for valuable documents production such as bank-papers, passports, identity cards or other similar documents. It is provided with flat base (12) which is ensured with dirt-resistant protection coating (14) to increase paper durability and circulation period. Protection coating (14) consists of at least two lacquer layers (16, 18). Bottom layer (16) is formed by the layer applied to the base by means of lacquer with physical drying properties. This layer ensures contact with underlying base (12) and fills in and closes base pores. Physically drying lacquer consists of water-based disperse lacquer and/or polyurethane, and/or water dispersion of polyester from aliphatic polyester, or water dispersion of acryl sterol polyurethanes. The second top lacquer layer (18) protects base (12) from physical and chemical effects and is formed by radiation-solidified layer and/or physically drying lacquer consisting of UF-protected lacquer, water-based disperse lacquer or combined lacquer. Method relates to production of protected from forgery paper. It includes preparation of flat base, application of physically drying lacquer and top protection coating.

EFFECT: improvement of dirt-resistance and moisture resistance properties of protected from forgery paper.

41 cl, 3 ex, 5 dwg

FIELD: textile, paper.

SUBSTANCE: web has two sides and contains an additional composition located on at least one side of the web. The additional composition comprises at least one film-forming agent and at least one active agent. The film-forming agent is fixed to the web, and the active agent is retained on the web by the film-forming agent. The active agent is an antimicrobial agent.

EFFECT: web showing antibacterial activity without releasing the active agent is provided.

21 cl, 9 dwg, 5 tbl, 2 ex

FIELD: pulp-and-paper industry.

SUBSTANCE: paper/cardboard with protection means comprises paper base and cardboard base having one or more layers of cellulose fibers and surface-processed layer adjoining at least one side of paper/cardboard base, of which layers at least one layer is part of at least one local deviation defining distinctive sign on paper/cardboard. Local deviation comprises locally compressed material and locally surface-processed layer having thickness exceeding thickness of respective surface-processed layer disposed around and outside indicated layer. Method for producing of paper/cardboard with protection means is also described.

EFFECT: increased efficiency in producing of low-cost surface- processed cardboard and paper protected from counterfeit, provision for obtaining of desirable precise distinctive signs on paper or cardboard.

20 cl, 4 dwg, 3 ex

FIELD: chemical industry; printing industry; other industries; methods of production of the composition of the paint including the optically changeable pigments.

SUBSTANCE: the invention may be used in production of the optically changeable pigments. The optically changeable pigment includes the stratified set composed of the different materials, in which, at least, one of the layers represents the reflecting layer and, at least, one of the other layers represents the dielectric layer. At least, one of the surfaces of the indicated layers is subjected to the chemical action. The indicated materials also include, at least, one of the layers, which represents the semitransparent metallic layer made out of chromium and also one or more metals and-or their inorganic compounds. At that the metal and-or its inorganic compound are subject to corrosion. The subjected to the chemical action surface of the reflecting and dielectric layer along the edge of the layering block of the edge structure of the pigment is coated with the passivating agent, which is selected from the group consisting of the organic esters and the fluorinated organic esters of the phosphoric acid, having the following structural formula: (Rf-CH2-CH2-O)xP(O)(OH)y, where Rf=F-(CF2-CF2)z, х=1 or 2, у=2 or 1, х+у=3, z=l-7. The composition of the printing paint includes the binding system, water and the optically changeable pigment. The invention allows to diminish oxidation of the metallic layers and dissolution of the dielectric layers of the optically changeable pigment and to use it in the compositions of the printing paint.

EFFECT: the invention allows to diminish oxidation of the metallic layers and dissolution of the dielectric layers of the optically changeable pigment and to use it in the compositions of the printing paint.

22 cl, 7 ex

FIELD: light industry; composition of decorative coats for wallpaper; manufacture of pearly ink for intaglio printing on wallpaper.

SUBSTANCE: composition of proposed printing ink for wallpaper contains 16-16.5 mass-% of pearly pigment; 12-12.5 mass-% of ethyl alcohol; 46-46.4 mass-% of binder - acrylic latex of butyl acrylate copolymer (19-21%) and methacrylic acid (10-12%) and water; copolymer acrylic latex is produced by method of radiation emulsion polymerization of butyl acrylate, vinyl acetate and methacrylic acid under action of ionizing radiation at dose rate of 0.05-0.1 g/s to absorbed doses of 1.5-2 kgr.

EFFECT: avoidance of lamination of ink; easily washable ink; enhanced heat resistance of ink.

1 tbl, 2 ex

FIELD: textiles.

SUBSTANCE: present invention pertains to a layer with an image meant for use in absorbent fabrics. An image is made, for example, in the form of a text or picture. An image is formed with a number of dots. When the layer is in the first state, the dots have the first surface density, which form an identifiable and clear image. When the layer is in the second and then outspread state, the dots have a second surface density, which is below the first surface density in the first state. In this case the image goes into the second surface state essentially indecipherable or unclear to the observer at the given distance because of a lower surface density.

EFFECT: obtaining the effect of reduction in visibility of the image on the fabric.

9 cl, 10 dwg

FIELD: textile, paper.

SUBSTANCE: base is subjected to pressure by placing it in contact with a stamping die. The stamp has a micro-proceeded site designed to create the diffraction pattern on this basis. The base comprises a printed paper or cardboard sheet varnished on the site of contact of the stamping die with the base. The stamp has also a plain section to create on this basis, except the diffraction pattern, a site with high degree of gloss.

EFFECT: invention enables to create a simple and economic mode of applying a visual label on the base.

24 cl, 13 dwg

FIELD: textile, paper.

SUBSTANCE: structure is intended for secured and/or valuable documents. It contains at least one substrate of fibre material, optionally, at least one surface layer applied onto one surface of substrate. At the same time the specified surface layer comprises coating or surface pigments and at least one binder. It also contains multiple various elements of substrate and/or optionally of a surface layer, distributed in a random manner inside the substrate and/or optionally the surface layer, and at least one portion of authenticating and/or identifying information is related to at least one spatial and/or physical criterion of at least part of specified various elements. Also a document, a packing facility and a sheet material are proposed with application of the above-specified structure. A method to make such a structure, its versions and a method to authenticate and/or identify the structure are also proposed.

EFFECT: improved extent of protection.

31 cl, 12 dwg

Wipe product // 2430709

FIELD: medicine.

SUBSTANCE: wipe product relates to absorbent paper products. A wipe product represents a wipe sheet having a first side and a second side. The wipe sheet contains cellulose fibres in an amount at least 50 wt %, and an additional composition containing polymer. The additional composition is present at least on the first side of the wipe sheet. The wipe product has extensionality exceeding 3 cm3/g, a fluffiness test value less than approximately 3 mg, and the first side of the wipe sheet has a stick-slip value more than approximately 0.01. The additional composition contains a non-fibrous olefin polymer, ethylene carboxylic acid copolymer or their mixture. The additional composition can be included in a wipe cloth by means of fibre combination to be used for cloth formation. Alternatively, the additional composition can be superficially applied on the formed cloth.

EFFECT: better quality of the wipe product.

20 cl, 42 dwg, 18 tbl, 7 ex

FIELD: paper industry.

SUBSTANCE: one side of paper-based substrate is coated with the first dyeing composition to provide the degree of whiteness L* with the value of L1. The second dyeing composition is applied to the opposite side of the substrate having the degree of whiteness L* with the value of L2. A colored product is obtained, characterised by the degree of whiteness L* with a value of L3 for the first coated side. The second coated side of the product has a degree of whiteness L* with a value of L4. Thus L1 is not more than 8 points higher than L3, and L2 is at least 30 points higher than L4. The degree of whiteness L* is determined using the colour characteristics CIE L* a* b*, a clarifier D 65, and at the observation angle of 10°C. In this method, the penetration of dyeing substances of the dyeing composition is adjusted so that the minimal impact is achieved on the degree of whiteness of the coating of white or light colour on the opposite side of coloured paper.

EFFECT: obtaining high-quality colored paper, which has a high contrast ratio to ensure high-level package, simplification of method, reducing of cash expenses, time expenditures and labor.

15 cl, 1 dwg, 2 tbl

FIELD: printing trade.

SUBSTANCE: invention relates to printing and concerns the fraud-proof paper for manufacture of important documents. The paper contains a base with protective element with optically variable properties distinguished when viewing the base from at least its first side and the layer, susceptible to printing paint, which is located on at least first side of the base and which on its first section outside of the section of location of the protective element with optically variable properties, has the first thickness, and on the second section of the base on which the protective element with optically variable properties is located, has the thickness, smaller in comparison with the first thickness. The thickness of the layer, susceptible to paint, within the second section of the base in stepped or stepless manner is decreased starting from the first thickness of the layer, susceptible to paint, which it has on the first section of the base, down to the minimum value.

EFFECT: invention provides creation of the fraud-proof paper on which it is possible to apply the printing image with simultaneous providing the recognisability of optically variable effect created by the protective element located in paper which has optically variable properties.

16 cl, 4 dwg

Up!