1081results about "Special paper" patented technology

The invention discloses base paper for aluminum spraying and a preparation method thereof, and relates to the technical field of base paper. The preparation method comprises the following steps: pulping softwood pulp, then adding deionized water to dilute the softwood pulp until the mass concentration is 0.8%-1%, then adding modified gel particles, modified bentonite and a PAE wet strength agent, adjusting the pH value to 6.5-7.5, stirring for 40-60 minutes, and then adding deionized water to dilute the softwood pulp until the mass concentration is 0.5%-0.7% to obtain mixed paper pulp; and then making the mixed paper pulp into paper sheets, squeezing, drying, coating the surface layer coating on the surface of base material paper, and drying with hot air to obtain the body paper for aluminum spraying. According to the invention, the modified gel particles and the modified bentonite are added, so that the mildew-proof and moisture-proof capabilities of the base paper for aluminum spraying are effectively improved; the introduction of the surface coating further improves the mildew-proof and moisture-proof capabilities. Therefore, the method has a wider application prospect.

The invention discloses a paper base-PHA double-sided composite soil biodegradable agricultural mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural mulching materials and green high polymer materials. The mulching film comprises a paper base layer and a homologous polyhydroxyalkanoate covering layer arranged on the surface of the paper base layer. Through double-sided synergy of the water-based PHA coating on the soil sticking surface and the thermoplastic PHA extrusion film layer on the windward and rainy surface, and in combination with a'wet-to-heat 'integrated composite process and trace anhydride grafting, super-strong combination of a paper-plastic interface fiber tearing level is realized, and the problem that traditional paper-plastic is easy to layer is solved. Compared with a traditional fluorine-containing product, on the premise that total organic fluorine is not detected, the excellent barrier and moisture conservation performance is achieved with the thinner coating thickness by means of double barriers. The product has excellent mechanical laying adaptability and long-season weather resistance, is fully biodegradable, thoroughly solves the hidden dangers of micro-plastic residues and persistent organic pollutants, and is an ideal green agricultural covering material.

The invention relates to the technical field of agricultural paper, in particular to double anti-mite fruit cultivating bag paper and a preparation method thereof. The preparation method comprises the following steps: pulping: respectively pulping natural-color bamboo pulp and natural-color softwood pulp, then mixing, adding water, and uniformly mixing to obtain pulp; papermaking: sequentially adding iron oxide yellow, aluminum sulfate, rosin size and a wet strength agent into the pulp, adding water for dilution, and drying after papermaking to obtain fruit cultivating bag body paper; sizing: taking oxidized cassava starch, adding water, preparing starch slurry, heating, continuously stirring until the starch is completely gelatinized, taking starch gelatinized liquid, adding neem oil, putting into a high-speed homogenizing emulsifying machine, emulsifying to obtain neem oil anti-mite emulsion, uniformly mixing the neem oil anti-mite emulsion with wax emulsion to obtain anti-mite glue liquid, immersing the fruit cultivating bag body paper into the anti-mite glue liquid, and drying to obtain the fruit cultivating bag. And taking out and drying to obtain the double anti-mite fruit cultivating bag paper. The composite material has physical barrier and long-acting anti-mite functions, and the risk of insect attack invasion is greatly reduced.

The invention belongs to the technical field of artificial veneers, and particularly relates to a fragrance-releasing blue-light-resistant microcapsule and a preparation method thereof, impregnated bond paper of the fragrance-releasing blue-light-resistant microcapsule, a fragrance-releasing blue-light-resistant ecological board and a preparation method of the fragrance-releasing blue-light-resistant ecological board. The technology aims at solving the problems of indoor blue light harm and air quality, and the problems that in the prior art, stable coexistence of a fragrance releasing component and an anti-blue-light component is difficult, and the technology is not compatible. The core is to prepare a multifunctional microcapsule through a unique interfacial polymerization and Schiff base in-situ reaction synchronous process: compound plant essential oil is taken as a core material, a vanillin-polyethyleneimine Schiff base conjugated structure is generated in situ in a wall material, and nanoparticles are cross-linked and fixed, so that a polyurethane / polyurea wall material is formed. The microcapsule is added into an adhesive layer of impregnated bond paper, and then is compounded with a base material through hot pressing to prepare the ecological board. The fragrance releasing and blue light resisting functions are successfully integrated on the board body, the effects that the blue light absorptivity at the wave band of 400-450 nm is larger than or equal to 70%, the formaldehyde release amount is smaller than or equal to 0.025 mg / m, and the fragrance is lasting are achieved, and the technology is highly compatible with an existing production line.

The present disclosure provides a coated paperboard comprising a paperboard substrate and a coating layer wherein: the coating layer comprises a pigment mixture and a binder in a dry weight ratio within the range of from 100:14 to 100:25; the pigment mixture comprises a calcium carbonate pigment and a clay pigment in a dry weight ratio within the range of from 98:2 to 92:8; and the calcium carbonate pigment has a particle size distribution (wt. %<2 μm) within the range of from 75 to 95.

The present disclosure relates to a machine glazed paper comprising softwood fibers, the machine glazed paper comprising starch to an amount within the range of from 0.1 wt. % by weight to 2 wt. % of the dry weight of the machine glazed paper. the amount of softwood fibers of the total amount of fibers being 63 wt. % or more, and the machine glazed paper having a Cobb value within the range of from 20 gsm to 50 gsm. as measured according to the standard method ISO 535:2014. The present disclosure furthermore relates to a method of producing the machine glazed paper.

The invention provides a moisture-proof corrugated board and a production process thereof. The moisture-proof corrugated board comprises inner paper, core paper and surface paper which are sequentially arranged, and the surfaces of the inner paper and the core paper are coated with moisture-proof coatings; the invention relates to a preparation method of an anti-aging agent. The moisture-proof coating is prepared from the following raw materials: 35 to 45 parts of waterborne acrylic resin, 10 to 16 parts of fluorine modified shape memory polyurethane, 8 to 12 parts of waterborne polyurethane dispersion, 4 to 8 parts of bamboo charcoal loaded nano silver-zinc oxide composite particles, 3 to 6 parts of hydrophobic nano silicon dioxide, 5 to 9 parts of chitosan modified nano cellulose, 1.5 to 2.5 parts of silane coupling agent, 0.8 to 1.2 parts of dispersing agent, 0.2 to 0.4 part of defoaming agent and 0.5 to 0.9 part of wetting leveling agent. The corrugated board provided by the invention has excellent moisture resistance, mildew resistance and structural stability.

According to the preparation method of the nano microcapsule with the mildew-proof function, provided by the invention, the embedding rate, the drug loading rate and the yield of the microcapsule are effectively improved by adjusting the concentration of a water phase of chitosan, the concentration of a PCL polymer and the ratio of the mildew-proof agent to the PCL; the microcapsule disclosed by the invention has excellent mildew-proof performance, and can be used as a functional additive to be added into an industrial coating, so that a coating is endowed with long-acting mildew-proof capability; the anti-mildew agent can also be widely applied to anti-mildew protection in the fields of wood, leather and textile fabrics, and has huge application potential.

In an embodiment, a package enclosure can include a first creped paper packaging material and a second creped paper packaging material. The first creped paper packaging material can include a first single-layer creped packaging paper. The second creped paper packaging material can include a second single-layer creped packaging paper. The first creped paper packaging material and the second creped paper packaging material can define a respective material perimeter, with the second creped paper packaging material being attached to the first creped paper packaging material proximal their respective material perimeters to form a set of bound borders. The first creped paper packaging material and the second creped paper packaging material can thereby be attached together in a manner to define a package enclosure. The materials used for the package enclosure may be referred to as a package material combination.

The invention firstly provides a structure of environment-friendly bottomless paper type thermo-sensitive paper. The structure comprises a base material, and a thermo-sensitive coating and a silicone oil layer which are sequentially laminated on one surface of the base material, the thermosensitive coating comprises a color developing layer, a pre-coating layer and a bottom coating layer which are laminated in sequence, and the bottom coating layer is laminated on one surface of the base material; secondly, a coating system is provided, and a color developing agent comprises 4, 4 '-sulfonyl diphenol; the invention also provides a preparation method which is used for preparing the thermo-sensitive paper by adopting the structure and the coating system, and comprises the following steps: coating the color developing layer on the surface of the pre-coating layer by using curtain coating; a novel structure is designed, a basis is provided for the self-curling release performance of the thermo-sensitive paper, a coating system uses 4, 4 '-sulfonyldiphenol, so that the color saturation, the light resistance and the stability of the thermo-sensitive paper can be improved, the thermo-sensitive paper does not react with silicone oil, the release performance is improved, a curtain coating method is adopted based on the structure and the coating system, and the self-curling release performance of the thermo-sensitive paper is improved. And the coating uniformity, color development and other properties of the thermo-sensitive paper are effectively improved, and the environment-friendly thermo-sensitive paper which is fast in reaction, bright in color and high in definition during printing is integrally formed.

The application discloses porous chlorine dioxide slow-release preservative paper and a preparation method thereof. The paper comprises a paper base, a porous carrier is fixed on the paper base through oxidized starch glue, sodium chlorite, an activator and a stabilizer are loaded on the porous carrier, and the porous carrier is one of porous structures of aluminum oxide, titanium oxide, cobalt oxide, zinc oxide, copper oxide, iron oxide, cerium oxide, zirconium oxide, nickel oxide, manganese oxide, praseodymium oxide and lanthanum oxide. The application can stably and effectively realize slow release of chlorine dioxide, prolong the release period of chlorine dioxide, and realize long-acting and stable sterilization and disinfection.

A pressing module and method for forming cellulose products (1) from an air-formed cellulose blank structure (2), where the pressing module (PM) comprises a forming mould (3) with a first mould part (3a) and a second mould part (3b) configured for interacting with each other for forming the cellulose products (1) from the air-formed cellulose blank structure (2) in the forming mould (3). The first mould part (3a) and / or the second mould part (3b) are movably arranged relative to each other in a pressing direction (DP) parallel to a longitudinal direction (DLO) of the pressing module (PM). The first mould part (3a) and the second mould part (3b) are at least partly configured for being arranged in an overlapping relationship in the longitudinal direction (DLO) during forming of the cellulose products (1). The first mould part (3a) comprises a first mould part section (4a) and a second mould part section (4b) arranged in connection to the first mould part section (4a). The second mould part section (4b) is configured for being displaced relative to the first mould part section (4a) in a lateral direction (DLA) of the pressing module (PM) during forming of the cellulose products (1) in the forming mould (3). The first mould part section (4a) and the second mould part section (4b) are configured for applying a forming pressure (PF) onto the air-formed cellulose blank structure (2) in the range of 1-100 MPa, preferably in the range of 4-20 MPa, during a single pressing operation (OSP) upon forming of the cellulose products (1) in the forming mould (3).

According to an example aspect of the present invention, there is provided a method comprising: in a mould, forming a multi-layered foamed fibrous structure from foamed fibrous compositions, wherein each of the foamed fibrous compositions comprises cellulosic fibres, water, air, and at least one foaming agent; dewatering the foamed fibrous structure; hot-pressing the dewatered structure, to obtain a moulded fibrous product, wherein said at least one foaming agent comprises at least one surface-active foaming agent and / or at least one polymeric foaming agent, and wherein at least one of the foamed fibrous compositions comprises a hydrophobic agent.

The invention relates to the technical field of manufacturing of coated paperboards, in particular to frame paper for cigarettes and a preparation process of the frame paper. The problem that the mechanical property and the barrier property cannot be considered at the same time in the prior art is solved. According to the frame paper for the cigarettes, the bleached hardwood pulp and the softwood pulp are compounded, and the calcium carbonate and the nanocellulose crystals are added to prepare the high-uniformity modified paper base; then, polycaprolactone diol, isophorone diisocyanate, dimethylolpropionic acid and 1, 4-butanediol are subjected to a reaction, aminopropyltriethoxysilane is used for blocking, obtained polyurethane emulsion is mixed with gelatinized starch and flaky kaolin step by step, and the composite coating is prepared; coating double surfaces of the modified paper base with the composite coating, and performing step-by-step drying, hot-pressing shaping and curing to obtain the paper. Through multi-stage cooperation of paper base-coating-process, the frame paper has excellent mechanical properties, high printing stability and high barrier property, and is suitable for the field of high-grade cigarette packaging with strict performance requirements.

The invention discloses a preparation method of high-color-fastness woven body paper and the high-color-fastness woven body paper, and relates to the technical field of papermaking, and the preparation method of the high-color-fastness woven body paper comprises the steps of preparing a composite dyeing assistant and preparing the woven body paper. The preparation method comprises the following steps: stirring and mixing cationic microcrystalline cellulose, sodium carboxymethyl cellulose, triethanolamine myriceate, glucan hydroxypropyl trimethyl ammonium chloride, a water-based polycarbodiimide cross-linking agent and deionized water to obtain a composite dyeing assistant, then adding the composite dyeing assistant into slurry, adding a water-based dye, and carrying out a papermaking process to obtain the composite dyeing assistant. According to the method, the color fastness of the woven body paper can be improved. The sun-proof grade of the high-color-fastness woven body paper is greater than or equal to 4 grades.

According to an example aspect of the present invention, there is provided a method comprising: in a mould, forming a multi-layered foamed fibrous structure from foamed fibrous compositions, wherein each of the foamed fibrous compositions comprises cellulosic fibres, water, air and a foaming agent; dewatering the foamed fibrous structure; hot-pressing the dewatered structure, to obtain a moulded multi-layered fibrous product, in which method at least two different foaming agents are applied, wherein said at least two different foaming agents are selected, independently from each other, from the group of surface-active foaming agents and polymeric foaming agents.

The invention discloses high-strength high-air-permeability germinable seed paper and a preparation method thereof, and belongs to the technical field of seed paper preparation. The technical problem that the water absorption and air permeability of traditional seed paper are reduced due to addition of a chemical reinforcing agent, and then the germination rate of seeds is affected is solved. According to the technical scheme, unbleached softwood pulp is used as a raw material, after being pulped by a PFI mill, the unbleached softwood pulp is mixed with cationic lignocellulose nanofibrils and seeds which account for 4-8% of the mass of absolute dry pulp for pulping, forming is conducted through an automatic paper making system of a Kaiser method, and drying and shaping are conducted at the temperature of 40 DEG C; the cationic lignocellulose nanofibrils are prepared by the steps of grinding unbleached softwood pulp, performing alkali treatment, performing etherification reaction and performing ultrahigh-pressure homogenization. The seed paper does not need a chemical reinforcing agent, the air permeability is 17.4-18.8 [mu] m / (Pa.S), the tensile strength is 6.08-6.84 kN / m, and the relative absorptivity is 214-230%.

The invention relates to the technical field of general papermaking, in particular to treatment-free CTP plate lining paper and a preparation method thereof.The treatment-free CTP plate lining paper at least comprises a paper base layer, a reinforcing layer and a surface coating, and the paper base layer contains natural cellulose; the reinforcing layer is located between the paper base layer and the surface coating, the reinforcing layer is of a net-shaped structure obtained through coating based on a micro gravure coating technology, a first coating forming the reinforcing layer contains a substance forming hydrogen bonds with cellulose, the thickness of the reinforcing layer is 5-18 microns, and the peak-valley difference of the reinforcing layer is smaller than 8 microns; the thickness of the surface coating is at least 1.2 microns, and a second coating forming the surface coating contains silicone oil.

This invention provides a paper towel roll that, even when an embossed pattern is applied to a paper towel sheet obtained using TAD papermaking technology and wound into 2-3 plies using glue, exhibits good aesthetic appeal of the embossed pattern, produces less glue residue, and is less prone to ply separation. [Solution] This disclosure relates to a paper towel roll 1 obtained by laminating a paper towel sheet 1x, in which at least one ply has an embossed pattern applied to it, with glue, into 2 to 3 plies, and winding the resulting roll, wherein the number of short embossed patterns with a longest portion of 20 mm or less is greater than the number of long embossed patterns with a longest portion exceeding 20 mm, and the basis weight of the paper towel sheet 1x in the product ply is 30 g / m². 2 More than 56g / m 2 The following is the water absorption capacity per unit area of ​​one sheet of product ply paper towels: 300 g / m² 2 More than 600g / m 2 The following applies:

The utility model discloses anti-fuzzing composite dust-free paper, which belongs to the technical field of dust-free paper and comprises a base material layer and an outer protective layer, the upper surface and the lower surface of the base material layer are both provided with constraint embossing, and the constraint embossing is composed of a plurality of embossing grooves which are recessed downwards on the surface of the base material layer and are distributed in a criss-cross mode. The multiple embossing grooves jointly form constraint embossing of a net-shaped structure. The two outer protection layers are located on the upper surface and the lower surface of the base material layer respectively, each outer protection layer is composed of a plurality of protection lines which are distributed in a staggered mode and form a net-shaped structure, and projections, formed on the surface of the base material layer, of the protection lines and the embossing grooves are distributed in a staggered mode; the surface of the composite dust-free paper is provided with two anti-fuzzing structures, so that the composite dust-free paper keeps stable absorption performance and has a good anti-fuzzing effect.

The invention belongs to the technical field of nano-crystalline cellulose materials, and discloses a method for enhancing dissolved nano-crystalline cellulose papermaking. The method comprises the following steps: 1) dissolving a cellulose raw material with a solvent to obtain a cellulose solution; 2) mixing the cellulose solution with an anti-solvent, and performing nanoscale dispersion to obtain a dissolved nano cellulose dispersion; (3) washing the dissolved nano-cellulose dispersion to obtain a dissolved nano-cellulose aqueous dispersion; 4) adding the dissolved nano cellulose aqueous dispersion into the paper pulp, stirring, dispersing and homogenizing to obtain mixed pulp; and 5) performing papermaking forming on the mixed pulp to obtain enhanced paper. The method is simple, and compared with other nanocellulose, the water filtering time is effectively shortened. According to the method, the strength of the paper is remarkably improved, the problems that traditional paper is low in strength and water filtering time is long after the nano cellulose is added are effectively solved, application of the paper in the high-performance field and the industrial field is facilitated, and the application range of the paper is widened.

The invention discloses a preparation method of all-bamboo fiber basic color paper cup body paper and a product thereof, and the preparation method comprises the following steps: mechanically grinding bamboo chemical pulp fibers and bamboo chemical thermo-mechanical pulp fibers as raw materials, carrying out biological treatment on the bamboo chemical thermo-mechanical pulp fibers by using laccase / mediator, and preparing the paper cup body paper by adopting a three-layer composite papermaking process. The paper cup body paper is composed of a surface layer (bamboo chemical pulp), a core layer (bamboo chemical thermo-mechanical pulp treated by laccase / ABTS) and a bottom layer (bamboo chemical pulp), and aluminum sulfate, rosin size and CPAM are added in the papermaking process. The technical problems that the production cost is high due to the fact that traditional unbleached paper cup body paper depends on wood pulp, and bamboo pulp fibers are difficult to give consideration to high bulkness and high strength are solved, the raw material cost is low, the production process is environmentally friendly, the product has excellent physical strength, bulkness and water resistance, wood resource consumption can be reduced, and sustainable development of the papermaking industry is promoted.

The utility model discloses corrugated paper with a flame-retardant effect, which comprises a corrugated paper body, the corrugated paper body comprises core paper, surface paper is arranged at the top of the core paper, an upper flame-retardant layer is arranged at the top of the surface paper, the upper flame-retardant layer comprises a tungsten carbide coating and an aluminum oxide coating, bottom paper is arranged at the bottom of the core paper, and a flame-retardant layer is arranged at the bottom of the bottom paper. A lower flame-retardant layer is arranged at the bottom of the bottom paper and comprises a polyvinyl chloride coating and a polytetrafluoroethylene coating, the tungsten carbide coating is coated at the top of the surface paper, the aluminum oxide coating is coated at the top of the tungsten carbide coating, and the thickness of the tungsten carbide coating is the same as that of the aluminum oxide coating. The upper flame-retardant layer is arranged, the aluminum oxide coating contained in the upper flame-retardant layer can be used for carrying out first-layer flame-retardant protection treatment on the surface paper, and the tungsten carbide coating can be used for carrying out second-layer flame-retardant protection treatment on the surface paper after the aluminum oxide coating is damaged, so that the overall fire resistance of the surface paper is effectively improved.

The application relates to the field of decorative materials, in particular to a wear-resistant decorative paper and a preparation method thereof. The preparation method of the wear-resistant decorative paper comprises the following steps: coating wear-resistant paint on the surface of base paper to form a wear-resistant coating layer through drying treatment, so that the wear-resistant decorative paper is prepared; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate and methyl methacrylate, so that the wear-resistant paint has good adhesion; the wear-resistant paint is prepared by using divinylbenzene and styrene, so that the hardness and strength of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using vinyl silicone oil, so that the flexibility and water / oil repellency of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate, methyl methacrylate, divinylbenzene, styrene and vinyl silicone oil, so that the prepared wear-resistant decorative paper has excellent wear resistance.

To provide a paperboard with an excellent strength and printing quality.SOLUTION: There is provided a paperboard, comprising a top layer, at least one or more middle layers and a bottom layer, and contains 20 mass% or more of hardwood kraft pulp relative to the total pulp mass, and the surface layer contains 50 to 100 mass% of softwood kraft pulp. The paperboard has a compression energy of 2.0 to 25.0 gf cm / cm2, and a compression recovery rate of 40 to 95%.SELECTED DRAWING: None

The invention provides coated paper and a preparation method thereof. The preparation method comprises the following steps: performing corona treatment on the surface of raw paper; extruding a molten resin film to the surface of the raw paper subjected to corona treatment by using an extruder; wherein the anti-sticking smooth master batch is added in the process of melting the resin film by the extruder; and pressing the resin film and the body paper by using a pressure roller and a cooling roller, cooling and shaping. According to the preparation method of the coated paper provided by the embodiment of the invention, the problem of bubbling of the coated paper in the subsequent printing process can be effectively solved by adding the anti-sticking smooth master batch in the process of melting the resin film by the extruder and adjusting and optimizing the coating process parameters and equipment configuration.

To provide a paper towel roll that maintains the strength of the paper towel sheet, offers good wiping comfort and absorbency, and requires less frequent roll replacement. [Solution] A paper towel roll made by winding a paper towel sheet, which consists of two or more layers of sheets, into a roll shape, with a roll length of 155m to 350m, and a basis weight of 11.5g / m² per ply of the paper towel sheet. 2 More than 28.0g / m 2 The following is a water absorption rate per unit area of ​​70 g / m². 2 More than 180g / m 2 The following paper towel rolls are provided, wherein the GMT, which is the square root of the product of DMDT and DCDT, is between 4.5 N / 25 mm and 16.6 N / 25 mm, and the measured stiffness (D), as measured by a tissue softness measuring device TSA, is between 0.5 mm / N and 3.5 mm / N.

Provided are: base paper for cushioning materials which can readily develop projection shapes when forming projections thereon by imparting a plurality of projection shapes, and which enables production of a paper cushioning material that ensures minimal breakage of the projections and exhibits excellent cushioning properties; and a paper cushioning material that is obtained by forming a plurality of projections on one or both sides of the paper surfaces of said base paper for cushioning materials. The base paper for cushioning materials is subject to formation of at least 70 projections per 100 cm2 on one or both sides of the paper surface to produce a paper cushioning material. The base paper has a basis weight of 70-110 g / m2, a lateral tensile strength of at least 1.5 kN / m, and a transmitted-light formation index of at least 8.<sp / > The paper cushioning material is produced by forming at least 70 projections per 100 cm2 on one or both sides of the paper surfaces of the base paper for cushioning materials.