Method of increasing advantages of reinforcing materials for producing paper and cardboard

FIELD: textile and paper.

SUBSTANCE: invention relates to a method of producing paper, cardboard or thin cardboard. Method involves the following steps: (a) conversion of a water cellulose material containing starch into a paper mass, (b) prevention of microbial degradation of at least part of the starch in processing the water cellulose material containing starch by one or more biocides, and (c) introduction of a dry and/or wet reinforcing polymer into the cellulose material. Method envisages: (A) determination of properties of water phase of the cellulose material selected from electric conductivity, redox potential, pH value, ATP concentration and free starch concentration, (B) making paper, cardboard or thin cardboard using the said method, (C) determination of the same property (A) after time interval Δt, comparing the value determined at step (B) with the value obtained at step (A) and (D) adjustment of the biocide dosage at step (b) and/or the reinforcing polymer dosage at step (c).

EFFECT: invention ensures reduction of electric conductivity of the water cellulose material with higher efficiency of reinforcing polymers due to reduction of their consumption.

15 cl, 5 dwg, 7 tbl, 4 ex

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to method of conserving water preparation of calcium compounds, which includes the following stages: (a) obtaining water preparation of at least one calcium compound; (b) addition to water preparation of stage a) of one or more sources of lithium ions in such quantity that the total quantity of lithium ions in water preparation constitutes from 750 to less than 3000 per mille , calculated relative to water in preparation; (c) addition to water preparation of stage a) of one or more sources of sodium ions and/or potassium ions in such quantity that the total quantity of sodium and/or potassium ions in water preparation constitutes from 3000 to less than 7500 per mille, calculated relative to water in preparation, where stages (b) and (c) can be performed simultaneously or separately in any order.

EFFECT: method improvement.

23 cl, 2 ex

Disinfecting wipes // 2510988

FIELD: chemistry.

SUBSTANCE: claimed invention relates to disinfecting wipe, which contains material of fibrous cloth, which is hydrophobic in general and contains synthetic polymer capable of extrusion in melt, where material of fibrous cloth in general does not contain cellulose fibres; and bactericidal solution, present in amount from 150 wt % to 1000 wt % relative to dry weight of fibrous cloth material, where bactericidal solution contains from 0.01 wt % to 2 wt % of at least one peracid, from 0.5 wt % to 15 wt % of at least one peroxide, from 0.001 wt % to 2 wt % of at least one surface-active substance, where at least one surface-active substance includes non-ionic surface-active substance, including alcoxylate of fatty alcohol, and anionic surface-active substance, which includes sulphosuccinate. Claimed invention also relates to method of solid surface disinfection.

EFFECT: obtaining disinfecting wipe, which contains bactericidal solution and demonstrates highly efficient germicidal properties, and bacterial solution which remains stable.

24 cl, 8 ex, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to biocidal composition, applied for paper impregnation. Composition contains propylene glycol, starch and colloidal silver with particle size 1-13 nm in concentration in colloid solution 20-100 ppm with the following component ratio, wt %: propylene glycol - 2-4; starch - 2-4; colloidal silver - 2-3; water - the remaining part.

EFFECT: invention makes it possible to prepare ecologically harmless composition in a simple way.

2 dwg, 3 tbl, 2 ex

FIELD: textiles, paper.

SUBSTANCE: method includes production of a bactericide dispersion consisting of fibrillated cellulose fibers with immobilised on them chemical precipitation of nanoparticles of hardly soluble compounds of bactericidal metals, mixing it with dispersion of paper-forming fibers to produce paper pulp, paper formation.

EFFECT: simplifying the process of preparation of bactericide, provision of possibility to make the preparation and a paper containing it, respectively, with a different amount of bactericidal components in them, expansion of products and scope of application of the paper.

5 cl, 1 tbl

FIELD: construction.

SUBSTANCE: wallpapers have a base and a face and a reverse sides. A coating that contains an antibacterial agent is applied onto the face side of the base. The coating antibacterial agent is represented by silver nanoparticles. The coating is produced by mixing of a varnish and a carbon porous carrier with silver nanoparticles in specified amount. Silver nanoparticles size is 2-50 nm. The carbon porous carrier has specific density of 0.03-0.1 g/cm3, specific surface of 50-200 m2/g and pore size of 5-50 nm. The varnish is a water-based acrylic varnish or an alkyd varnish. The wallpaper base is made of paper or cloth. The face surface of wallpapers is made of paper, cloth, fabric fibres or polyvinyl chloride. The carbon porous carrier with silver nanoparticles is in powder form. Glue is applied onto the reserves side of wallpapers.

EFFECT: higher quality of wallpapers and simplified technology of their manufacturing.

14 cl

FIELD: textile, paper.

SUBSTANCE: method represents reduction of transition metals content in a milled mass to a level unfavorable for sporulation. Preferably, bacterial cells present in the milling system of cardboard or paper machine in fact are not destroyed in the process of technological operations used to reduce the content of transition metals. The method also refers to obtaining packing board or packing paper characterised with a low content of bacterial spores, when to obtain packing board or packing paper a milled mass is used in which the content of transition metals is reduced to a level unfavorable for sporulation.

EFFECT: reduction of bacterial spores in the milling system of a cardboard machine.

20 cl, 9 dwg, 7 ex

Hygienic product // 2371156

FIELD: cosmetology.

SUBSTANCE: invention refers to paper hygienic product such as a napkin, a hygienic pad, toilet paper, lavatory bowl packing, etc. Hygienic product consists of at least one protective paper layer with biocidal properties. Paper is obtained by introducing antimicrobial agent - biocide into paper mass before paper web is made. As biocide, there used is hydrosol exposed during 4-24 hours and containing 4.0-10.0 wt % of bentonitic powder modified with Ag+ or/and CU2+ ions and their content in the powder is 2.0-8.0 wt %. For dry paper web fibre there used is not more than 2.0 wt % of the modified powder. The product can be adsorbing and can contain water-resistant layer and surface layer made from nonwoven fabric or plastic film, or their combinations. Particle size of the modified bentonitic powder is not more than 150 nm. There can be used a mixture of bentonitic powders at their mixture ratio of 1-(0.3-0.5) accordingly. Deionised water is used for obtaining hydrosol.

EFFECT: there is provided achievement of the effect consisting in enlargement of range of biocidal properties of hygienic products, enhancement of efficiency of the prolonged action of antibacterial and antimycotic properties of the biocide with traditional process additions and fillers of the manufacturing process of such products.

8 cl, 1 ex

FIELD: textile fabrics, paper.

SUBSTANCE: invention relates to production process of pulp-bearing materials, particularly, paper, allowing biocide properties and provided for general-purpose, including, printing paper, capital issues and paper of sanitary and hygienic purpose. It is implemented preparation of paper stock. Before outflow of paper blade into paper stock it is implemented biocide. In the capacity of biocide it is used isolated during 4-24 hours hydrosol, consisting 4.0-10.0 wt % pro-modified by ions of Ag+ or/and Cu2+ of bentonitic powder, where silver and/or copper portion is 2.0-8.0 wt %. Per air-dry fiber of paper pulp it is used 0.2-1.8 wt % of defined bentonitic powder.

EFFECT: expansion of range and effectiveness of durable action of antibacterial and antimycotic properties of received paper at low cost-based part of biocide, applied in process of paper manufacturing.

4 cl, 5 ex

FIELD: paper and pulp manufacturing.

SUBSTANCE: the present innovation deals with manufacturing paper being of high antimicrobial and fungicidal activity and could be applied for manufacturing paper being resistant to contamination, of high physico-mechanical properties and applied for manufacturing banknotes, bonds, shares and others. The suggested composition includes a filamentous constituent, a filler, a gluing constituent, a biocidal additive as synergistic mixture of polyhexamethylene guanidine and sodium salt of benzoic acid at the ratio being (10-1):(1-10), correspondingly, a moisture-resistant additive, a binding agent and water. Moisture-resistant additive is being epichlorohydrin or urea-formaldehyde resin. Binding agent is being formalin or ammonium salt of titanium chelate and lactic acid. Gluing constituent additionally contains polyvinyl alcohol or sodium salt of carboxymethyl cellulose. The innovation enables to increase antimicrobial and fungicidal activity of the composition mentioned, simplify its application and, also, increases physico-mechanical properties, abrasion resistance and resistance to contamination of the obtained paper.

EFFECT: higher efficiency of manufacturing.

3 cl, 5 ex, 4 tbl

FIELD: fungicides.

SUBSTANCE: invention proposes use of strobilurines as fungicidal agents designed to be applied in the form of dispersions in industrial process water and in the form of pulp both used in paper industry. Application areas include preservation of wet sheet, protection against mildew, in particular protection of paper products, or other areas wherein fungicidal or mildew-controlling agents are required. Water systems, which can be treated with strobilurines include papermaking machine systems, fibrous intermediate and paper systems, cooling towers, and heat-exchangers.

EFFECT: increased availability, reduced toxicity, and avoided involvement of volatile and inflammable organic solvents.

38 cl, 2 tbl, 4 ex

FIELD: textiles, paper.

SUBSTANCE: method comprises processing the paper from surface with aqueous solution of quercetine containing carbonate and sodium tetraborate, trilon B, and glycerin. The paper is treated by coating it with the solution on the sizing press by the impregnation method or spraying.

EFFECT: invention enables to improve stability of the process and to simplify the method.

7 cl, 2 tbl, 5 ex

FIELD: textiles, paper.

SUBSTANCE: invention relates to a method of obtaining colored paper, including the preparation of an aqueous dispersion of cellulose fibers and a natural dye solution - the product of the extraction of larch wood, containing 65-75 wt % quercetine and 25-35 wt % lignin-carbohydrate complex substances, dyeing of the cellulose fibers by their processing with the dye solution with its consumption of 0.5-0.8% of dry substance in reliance on the weight of absolutely dry fiber in dispersion, forming a paper web, which is different in preparing the additional dispersion of fibrillated cellulose fibers, only these fibers are subjected to dyeing, both dispersions are mixed to produce the paper pulp, while the amount of fibrillated cellulose fibers is 5-10 wt % of total amount of cellulose fibers in the paper pulp.

EFFECT: simplification and reduction in the cost of the process of obtaining the colored paper.

2 cl, 4 ex, 1 tbl

FIELD: textiles, paper.

SUBSTANCE: invention relates to hygiene or cleansing product comprising at least one layer (14) of fibrous web comprising cellulosic fibers and having the graphic pattern in at least first (110) and second (100) regions. The layer contains a dye compound providing coloring the layer (14) in the first region (110). At that the dye compound is chemically transformed, at least in part, in non-dying compound in the second region (100), so that the layer (14) is less painted in the second region than in the first region. Furthermore, the invention relates to a method of obtaining such a layer, comprising the steps of providing a fibrous web (14) containing the dye compound, providing uniform coloring of at least part a part of the web, and application of bleaching agent on colored segment of the web (14) for bleaching at least partially of the web in this segment to obtain a pattern of at least the first colored region (110) and the second region (110) colored to a lesser degree.

EFFECT: invention enables to improve the appearance and avoid the pollution of cars.

12 cl, 3 dwg

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 industry.

SUBSTANCE: composition contain the following components a) from 1 to 30 wt % per total mass of organic dye pigment composition, b) from 1 to 20 wt % of one or several binding substances, c) from 0 to 20 wt % of starch, d) from 0 to 10 wt % of anion direct dye, e) from 0 to 10 wt % of one or several auxiliary substances and f) water of up to 100%. Method for application of this composition and its use are also described.

EFFECT: improved resistance of organic pigments penetration and increased saturation of painting on paper.

8 cl, 4 tbl, 76 ex

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: 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: textile, paper.

SUBSTANCE: method includes moistening pulp lap with water solution of sodium salt of carboxymethylcellulose (NaCMC), included into composition of the paste made of a filler (chalk), mixed with a solution of NaCMC at the filler ratio of NaCMC equal to 100:(1-2). Production of moisture-saturated air suspension of fibres with filler from it. Forming a fibrous later on a shaping mesh. Moistening of a fibrous layer between two clothes, pressing and drying of a paper leaf. The filler is added as a paste, which contains 30% of dry substance. Moistening of a fibrous layer prior to pressing is carried out with a starch solution with concentration of 0.7-1.3%.

EFFECT: increased retention of filler in paper at simultaneous increase of paper strength index.

3 cl, 1 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

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