215results about "Material mixture addition" patented technology

The present technology relates to fluff pulp having improved odor control and methods of making such fluff pulp. A fluff pulp is provided that includes bleached kraft fibers and a copper ion content of from about 0.2 ppm to about 50 ppm by weight of the bleached kraft fibers. The bleached kraft fibers include a length-weighted average fiber length of at least about 2 mm, a copper number of less than about 7, a carboxyl content of greater than about 3.5 meq / 100 grams; an ISO brightness of at least 80; and a viscosity of from about 2 cps to about 9 cps.

The invention provides high-humidity base paper and a quantifiable preparation process thereof, and relates to the field of paper production and processing. Comprising the following raw materials in percentage by mass: 15%-25% of softwood pulp, 40%-55% of hardwood pulp, 10%-25% of soft fibers, 10%-20% of nanocellulose, 0.5%-1.5% of vegetable fat polymer composite microspheres and 1%-3% of functional aids, wherein the solid content of aqueous suspension of the softwood pulp and the hardwood pulp is 3%-8%; the nano cellulose is subjected to surface modification treatment. According to the paper, coniferous wood pulp long fibers, hardwood pulp short fibers and soft fibers are utilized to form a three-dimensional framework, nano-crystalline cellulose enhances wet load transmission through a nanoscale bridging network, vegetable fat microspheres construct a hydrophobic layer to inhibit moisture permeation, the three components have a synergistic effect, so that the wet tensile strength is improved, and meanwhile, high air permeability is kept; and the balance of water resistance and ventilation is realized.

The present invention relates to a sizing agent composition comprising starch, lignosulfonate and poly(alkyl acrylate), poly(alkyl (meth)acrylate), a mixture of poly(alkyl acrylate) and poly(alkyl methacrylate) or a copolymer of alkyl acry- late and alkyl (meth)acrylate. The present invention further relates to a method for preparing the sizing agent composition, and use of the sizing agent compo- sition for sizing paper, paper products or board.

The invention discloses a preparation method of a fluoride-free oil-proof agent for paper pulp molding, and relates to the field of oil-proof agent preparation. The preparation method comprises the following steps: adding a nonionic and cationic surfactant, a thickening agent, a bio-based functional additive, a cross-linking agent and a polymerizable siloxane coupling agent into water, heating and stirring, emulsifying with molten wax, homogenizing at high pressure, then adding a preservative and an anti-settling agent, and reacting at room temperature to obtain the wax emulsion with small particle size and stable structure. The prepared product has excellent storage stability, oil-proof performance and washable performance, does not stratify after centrifugation and long-term storage, and meets the green and environment-friendly requirements.

A method of making paper and paperboard products, including absorbent structures, where the method includes mixing ultra-high molecular weight (“UHMW”) glyoxalated polyvinylamide (“GPVM”) adducts and high molecular weight (“HMW”) anionic polyacrylamide (“APAM”) with the furnish during stock preparation of a wet laid papermaking process.

Aspects of the present disclosure include a rigid paperboard product comprising at least one modified starch and at least one crosslinker, wherein the at least one modified starch is present in an amount ranging from 2% to 20% by weight of the paperboard product, wherein the at least one crosslinker is present in an amount ranging from 0.5% to 8% by weight based on the dry weight of the starch content in the paperboard product, and wherein the paperboard product has a rigidity value ranging from 375 to 500.

A food-packaging material is provided which comprises a paper substrate having a surface and a coating comprising exfoliated graphene oxide on the surface of the substrate, wherein the exfoliated graphene oxide is present at an amount of less than 1 wt %. Methods of making the food-packaging material and methods of using the food-packing material are also provided.

Floor, Wall or Ceiling panel comprising a board (11) and a decorative top layer (12), wherein the decorative top layer (12) is provided on the board. The board (12) is based on MgO and MgChloride or wherein the board (12) is based on MgO and MgSulphate. The decorative layer (12) comprises a printed paper sheet (decor) (17) being treated with a resin, such as melamine formaldehyde (MF), polyurethane (PU), latex, acrylate dispersion or a combination thereof. The decorative top layer (12) is applied to the board by means of a direct pressure lamination (DPL) process.

A water dispersible repellent containing a modified form of a polyol and at least one kind of dispersant selected from the group consisting of a nonionic dispersant, a cationic dispersant, an amphoteric dispersant, and an inorganic dispersant, wherein the volume abundance ratio of particles having a size of 100 μm or more, as measured by laser diffraction scattering, is 25% or less, the repellent being capable of imparting oil resistance to a base material (for example, fiber or paper).

The present invention relates to a method for coating a paper substrate comprising: i) providing a paper substrate; ii) applying to the paper substrate an aqueous barrier coating composition comprising: a) from 10 to 50 wt% of a modified cutin extract (as dry matter), wherein said modified cutin extract is obtained by thermal treatment of 5 a raw cutin extract at a temperature comprised between 40 and 120 °C; b) at least one divalent or trivalent fatty acid metal salt, wherein the weight ratio, based on the dry content, of the modified cutin extract to the at least one divalent or trivalent fatty acid metal salt is from 10:1 to 1.1:1.

An aqueous suspension of a mineral material, for example calcium carbonate, may be prepared by wet grinding in the presence of an aqueous dispersion of (meth)acrylic polymer neutralized by a combination of at least one monovalent ion and at least one divalent ion. Such an agent may be used for facilitating grinding and such a mineral suspension may be used for preparing a mass filler for the preparation of paper, for preparing a paper coating slip, or for preparing a coating composition.

A biodegradable sound-absorbing acoustic damping material and a method for producing the same are provided. The material comprises a mixture of dried seaweed powder, fine cellulose fiber raw materials, and water. The preparation of the material involves mixing all the components into a homogeneous paste, shaping the paste, and then dehydrating it to obtain a solid paste.

The invention relates to a process for the acylation of a solid material, known as the hydroxylated material, bearing hydroxyl groups (—OH), known as reaction-generating hydroxyls, which are accessible and capable of reacting with at least one fatty acid chloride in gaseous form, said hydroxylated material being scrolled through a chamber, known as the acylation chamber, delimiting an internal space under a gaseous atmosphere. The invention also relates to an acylation device for performing said process.

Provided are: an aqueous biodegradable-resin dispersion in which the biodegradable resin has stable dispersibility and retains intact biodegradability and which can improve the heat sealability of paper products, etc.; and a method for producing the aqueous biodegradable-resin dispersion. The aqueous biodegradable-resin dispersion according to the present invention contains a biodegradable resin and an anionic compound, a 1 wt. % aqueous solution of the anionic compound having a pH of 7 or greater.

The present invention relates to a polymer dispersion and its use. The dispersion comprises polymer in particle form dispersed in an aqueous liquid phase. The polymer particles are obtained by a radical polymerisation of monomers in a presence of a dissolved rosin component, in an aqueous polymerisation medium comprising a polymeric stabilizer. The monomers comprise a first monomer (i) selected from alkyl (meth)acrylates and a charge-carrying second monomer (ii) having a cationic charge, when measured at pH 3, selected from ethylenically unsaturated tertiary amines.

The invention relates to the technical field of filtering materials, and mainly relates to an air filtering material and a preparation method thereof. The invention relates to an air filtering material, which comprises the following components: 60-70 parts by weight of wood pulp fiber; 10 to 20 parts by weight of a modified PAN nanofiber; 1-3 parts by weight of a modified PTFE emulsion; 5 to 10 parts by weight of modified PLA; 0.1 to 1 part by weight of chitosan; and 0.01 to 0.1 part by weight of sodium polyacrylate. The preparation method of the air filtering material comprises the following steps: soaking wood pulp fibers in water, and pulping; mixing the pulped wood pulp fibers, the modified PAN nanofibers, the modified PTFE emulsion, the modified PLA, chitosan and sodium polyacrylate to obtain mixed paper pulp; carrying out papermaking by utilizing the mixed paper pulp; and drying and calendering to obtain the air filtering material. The air filtering material provided by the invention also has the effects of high moisture resistance and strong antibacterial property while ensuring high filtering performance.

An aqueous barrier coating for paper products can include a chemically unmodified swellable clay dispersed in a binder, wherein the swellable clay is dispersed under high shear conditions such that the swellable clay is present in the form of tactoids.

Provided is an novel oil-resistant agent for pulp, comprising a hydrocarbon group-containing polymer, wherein the hydrocarbon group-containing polymer has a repeating unit derived from a monomer (a1), the monomer (a1) is a hydrocarbon group-containing monomer having an NH group-containing group and a hydrocarbon group having 6 or more and 40 or less carbon atoms, and an amount of the repeating unit derived from the monomer (a1) is more than 90% by weight relative to the polymer, which can impart oil resistance to a substrate (in particular, a pulp substrate).

A board including a plurality of layers having a different composition. At least one of the layers is based on MgO and MgChloride and / or at least one of said layers is based on MgO and MgSulphate. Methods for manufacturing such boards, and methods for manufacturing coated panels include such board.

To provide a coated paper containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), and having a coated layer having few coating defects.SOLUTION: A coated paper has coated layer containing a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) and an adhesive agent on at least one surface of a paper substrate. The coated paper has a solid content weight ratio of 99.9 / 0.1 to 60.0 / 40.0 between the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) in the coated layer and the adhesive agent, and a basis weight of 20 g / m2 or more and 150 g / m2 or less measured in conformity to JIS P 8124.SELECTED DRAWING: None

A water dispersible repellent containing a modified form of a polyol and at least one kind of dispersant selected from the group consisting of a nonionic dispersant, a cationic dispersant, an amphoteric dispersant, and an inorganic dispersant, wherein the volume abundance ratio of particles having a size of 100 µm or more, as measured by laser diffraction scattering, is 25% or less, the repellent being capable of imparting oil resistance to a base material (for example, fiber or paper).

A method of improving strength properties of paper, where to strengthen paper an aqueous solution of chitosan and citric acid is used with the percentage concentration of chitosan in the solution of at least 0,1% and the percentage concentration of citric acid in the solution of at least 0,5%, where the solution is used in the paper strengthening process by adding it to the pulp in the ratio of at least ½ litre of the solution per 1 kg of dry paper according to patent PL237344, characteristic in that sodium benzoate is added to the concentrate in the amount of 0.001% to 30% as a preservative. The solution used in the strengthening process, obtained by diluting the concentrate, contains citric acid - with the concentration of at least 0,5%, chitosan with the concentration of at least 0,1% and sodium benzoate with the concentration of at least 0,001%.

The present invention relates to a woven fabric comprising non-regenerated microfibrillated cellulose in the form of fiber monofilaments. Furthermore, the invention relates to methods of making and using such fabrics and / or monofilaments.

The present invention relates to a material suitable for manufacturing hydrophobic cellulose-based light-weight products, such as foams and foam papers, comprising any type of cellulose pulp from either soft wood or hardwood, 2 to 10 wt.% of hydrophobic suspension (OAF) to pulp, 0.5 to 5wt% of Chitosan solution in organic acids to pulp, 3 to 10 wt.% of surfactants to the pulp. The invention also relates to a process of making said material and a use thereof.

A treatment article comprising a fiber, a sizing agent, and a retention aid. The sizing agent comprises a wax or component thereof having an acid value of 10 mg to 220 mg KOH / g as measured according to USP 401. The retention aid comprises a nitrogen-containing polymer independently selected from the group consisting of (i) a nitrogen-containing polymer of Formula I, (ii) a polyethyleneimine, (iii) a polyaminoamide, (iv) a copolymer formed from the reaction product of epichlorohydrin and dimethylamine, and (v) combinations thereof.

The present invention discloses a composition of an unbleached natural brown copier paper without using any bleaching chemicals or dyes comprising of pulp extracted from waste paper material of corrugated cartons, starch, and fillers. It further includes AKD (Alkyl Ketene Dimer) and enzymes. The waste paper material includes the percentage of 30% to 60% old Indian corrugated cartons (OCC), 20% to 70% old imported corrugated cartons (OCC) and 20% to 50% white record / sorted office paper (SOP).

The invention discloses a papermaking dry strength agent preparation method, which comprises: S1, dissolving chitosan in an acidic aqueous solution to form a chitosan glue solution, and removing oxygen; s2, dropwise adding a high-concentration acrylamide solution, a water-phase monomer mixed solution and an initiator solution for graft copolymerization to obtain a branched prepolymer; s3, a cross-linking agent is added for a cross-linking reaction, and a micro-cross-linked structure is formed; primary amino groups on a chitosan chain are terminated, and branched amphoteric chitosan-polyacrylamide dry strength agent mother liquor is obtained; s4, carrying out composite dispersion on the composite material and a nanocellulose material, and diluting to obtain a diluent; and S5, after a paper machine slushing pump and before a pressurized screen, firstly adding an anionic garbage capturing agent for pre-flocculation, then continuously feeding the diluent, and stirring to obtain the product. According to the papermaking dry strength agent prepared by the preparation method disclosed by the invention, the interface bonding strength of the papermaking dry strength agent to fibers and the adaptability and use efficiency of the papermaking dry strength agent in a complex wet end environment are remarkably improved, and the requirements of the modern papermaking industry on high-performance and high-stability dry strength agents can be met.

A main objective of the present invention is to provide a new technique for treatment of macro stickies. The present invention can provide a treatment agent for macro stickies, which contains one or two or more selected from an oily and fatty compound having a melting point of 50°C or lower, a polyvinyl alcohol having a cationic group, and a cationic compound used for positive conversion. The present invention can provide a treatment method for macro stickies, which uses the treatment agent for macro stickies, for a macro stickies-containing object.