79results about "Surface covering paper" patented technology

The invention relates to an impregnated paper production quality detection method and system based on deep learning, and the method comprises the following steps: S1, obtaining an industrial camera image flow, sensor and process parameters, and event and work order information, and constructing a synchronous data packet; s2, preprocessing the synchronous data packet to obtain preprocessed image data, process data and an ROI mask; s3, obtaining a detection frame set and a segmentation mask set based on multi-model AI detection and segmentation according to the preprocessed image data, the process data and the ROI mask; s4, segmenting the mask set according to the detection frame set, and performing track clustering along the paper feeding direction to form a defect event flow; s5, on the basis of the defect event stream, performing online quality prediction and root cause analysis, and obtaining future interval quality prediction and key factor sorting; and S6, according to future interval quality prediction and key factor sorting, adaptive process optimization is carried out, and an optimal control instruction is obtained. According to the invention, the detection accuracy and fineness are effectively improved, and intelligent identification and cross-frame tracking of defects are realized.

The invention discloses a method for solving linting and dusting during paperboard printing, and belongs to the technical field of papermaking. Comprising the following detailed steps: a slurry preparation process, surface sizing treatment and a drying and curing process, in the slurry preparation process, various high-quality fiber raw materials are carefully selected and mixed, the proportion of various fibers is accurately controlled according to the expected performance and quality requirements of the paperboard, and meanwhile, a proper amount of auxiliaries are added; and the binding force between the fibers and the strength of the paper are enhanced. The raw material ratio in the paperboard production process is precisely regulated and controlled, the specially-made composite surface sizing agent is adopted for surface treatment, and scientific and reasonable drying and curing processes are matched, so that the problems of linting and powdering of the paperboard in the printing process are effectively solved, and the printing quality and the production efficiency of the paperboard are improved.

The invention discloses nano cellulose with high lignin content, a preparation method thereof and application of a barrier coating. The preparation method comprises the following steps: mixing a lignocellulose raw material with dilute sulphuric acid for acid pretreatment, and selectively depolymerizing hemicellulose to obtain lignin-rich residues of which the relative content of lignin is higher than that of the raw material; and carrying out mechanical nano fibrillation treatment to obtain the high-lignin-content nano cellulose with the lignin content of 29-60%. The prepared nano cellulose with high lignin content has excellent thermal stability, hydrophobicity and organic compatibility. The surface of paper is coated with the coating material, after hot pressing treatment, the Cobb value of the coated paper is as low as 3.3 g / m < 2 >, the water vapor permeability is only 12.1 g / (m < 2 >. D), grease permeation can be completely blocked, and the coating material has wide application prospects in the field of food packaging.

The invention discloses an in-situ doped ZnO paper-based insulating material and a preparation method thereof, and belongs to the technical field of paper-based special materials in paper industry. The method disclosed by the invention comprises the following steps: mixing and stirring zinc chloride and water to obtain a zinc chloride hydrated eutectic solvent; then soaking the porous base paper in a zinc chloride hydrated deep-eutectic solvent for swelling treatment to obtain gelatinized base paper; immersing the gelatinized raw paper into an ethanol / water anti-solvent system for regeneration treatment to obtain regenerated raw paper; then dipping the regenerated raw paper in alkali liquor for in-situ deposition treatment to obtain raw paper with ZnO micro-nano particles loaded and doped on the surface; and performing post-treatment on the body paper with the surface loaded and doped with the ZnO micro-nano particles to obtain the in-situ doped ZnO paper-based insulating material. According to the method disclosed by the invention, in-situ doping of the ZnO micro-nano particles is successfully realized in the densified base paper, and the dielectric property is further remarkably improved by cooperating with the densification effect.

The present invention relates to surface-foamed paper and paperboard coated with a thermosensitive micro-foaming agent and, more specifically, to surface-foamed paper and paperboard that exhibit excellent shock absorption and buffering performance by coating the surface of paper with a foaming mixture comprising a micro-foaming agent and starch, and then foaming the micro-foaming agent through high-temperature drying. In addition, the present invention relates to eco-friendly surface-foamed paper and paperboard using a foam material that can volumetrically expand on the surface of paper and paperboard.

The invention discloses printing ink and application thereof in tipping paper for heating cigarettes, and belongs to the field of tobacco products. The printing ink comprises polyvinyl butyral resin, a filler, an auxiliary agent and a solvent, the ink is good in thermal stability, the tipping paper for heating the cigarettes prepared from the ink is used for heating the cigarettes, no peculiar smell of the ink is generated in the smoking process of the heated cigarettes, the influence on the sensory quality of the heated cigarettes is reduced, and the ink has relatively high industrial availability, high safety and low cost and is applied to the production of the heated cigarettes.

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.

The invention belongs to the technical field of papermaking, and particularly relates to a process for improving blister fastness of a blister card. Comprising the following steps: treating needle and hardwood pulp with compound enzyme, adding light magnesium oxide, grinding to obtain compound modified pulp, preparing three layers of pulp, diluting and purifying, adding auxiliaries into a three-layer slushing pump before purifying, and adding core layer auxiliaries containing hydroxymethyl urea modified cationic polysaccharide and the like into a core layer pump; the three layers of pulp are compounded into a wet paper web layer by layer through an upper net of a headbox, gradient pre-drying is performed after multiple times of squeezing dehydration, and then surface sizing, post-drying, hard calendaring, front and back coating and soft calendaring are performed in sequence to obtain a finished blister card product. The process effectively solves the problems of infirm blister and shelling in narrow-edge blister processing, realizes standardized control of slurry quality, greatly reduces batch-to-batch difference of blister effects, remarkably improves the binding force of a narrow-edge blister area, optimizes the surface performance of paper, reduces the phenomena of linting and powdering during printing, and improves the printing quality of the narrow-edge blister blister. And the printing adaptability is improved.

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.

According to an example aspect of the present invention, there is provided a wallcover comprising a nonwoven substrate layer with a backing layer and an intermediate layer, disposed on one side of the backing layer, and a coating layer disposed on the intermediate layer. The backing layer comprises a mixture of cellulose fibers and coarse synthetic fibers. The invention also relates to a method of producing wall coverings. The invention provides environmentally friendly wallcovers, which may be produced in a single process phase without multiple manufacturing steps.

The disclosure provides a decorative sheet having a low gloss and imparting a rough feel. A decorative sheet 1 including a primary film layer 2 and a surface protective layer 5 provided to one side of the primary film layer 2, wherein the surface protective layer 5 has a surface provided with an uneven structure including a plurality of ridge portions each protruding in a ridge-like shape; the uneven structure of the surface protective layer 5 has a protruding peak height Rpk of 3.5 µm or more; and an absorption spectrum obtained from Fourier infrared spectrometry of the surface protective layer 5 has a ratio I1095 / I1725 of 0.65 or more, between a maximum value I1095 in a wavenumber range of 1085 to 1105 cm-1 and a maximum value I1725 in a wavenumber range of 1715 to 1735 cm-1.

The utility model discloses a paper packaging plate, particularly discloses a paper packaging plate and a packaging box which are used for storing articles for a long time under complex environmental conditions, and belongs to the technical field of design and manufacturing of paper packaging pieces of products. According to the paper packaging plate and the packaging box, the service life can be effectively prolonged, and packaged products can be well protected. The paper packaging plate and the packaging box are used for storing the articles for a long time under the complex environmental conditions. The paper packaging plate comprises a composite breathable framework plate, and a protective structure layer matched with the environment atmosphere in long-term contact is attached to the surface of the composite breathable framework plate. In the using process, the paper packaging plate forms a packaging box with the corresponding strength through the composite breathable framework plate, and the packaging box isolates water vapor and is mildew-proof and damp-proof through the protective structure layer. The packaging box is made of the paper packaging plate, the humidifying mildew-proof layer is located on the inner side wall of the packaging box, and the hydrophobic flame-retardant layer is located on the outer side wall of the packaging box.

The invention provides a PECVD (Plasma Enhanced Chemical Vapor Deposition)-based super-hydrophobic oleophobic fluoride-free paper-based material and a preparation method thereof, and relates to the technical field of paper-based materials. The method comprises the following steps: under a plasma condition, pretreating a paper-based base material, and constructing a multifunctional coating on the surface of the base material through carbon-based-silicon-based precursor codeposition and inert gas plasma post-treatment to prepare the super-hydrophobic and oleophobic fluorine-free paper-based material. According to the technical scheme, through precursor compounding optimization and PECVD process parameter regulation and control, the oil-proof, water-proof and gas barrier properties of the paper-based material can be precisely regulated and controlled, the material is endowed with multiple functions, and the design purposes of single coating preparation and multifunctional integration are achieved.

The invention belongs to the technical field of papermaking, and particularly relates to a preparation process of gypsum board covering paper. The preparation process of the gypsum board covering paper comprises the following steps: preparing deinked pulp: taking recycled office waste paper as a raw material, and sequentially carrying out pulp repulping, heavy slag removal, screening, purification and heat dispersion treatment to prepare the deinked pulp; pulp preparation, wherein surface layer pulp is bleached sulfate hardwood pulp and deinked pulp; core layer pulp is unbleached sulfate softwood pulp, OCC long fiber pulp and OCC short fiber pulp; the bottom layer slurry is OCC short fiber slurry and OCC medium fiber slurry; and papermaking: performing sizing, slushing and pressurized screen purification on the prepared surface layer slurry, the core layer slurry and the bottom layer slurry respectively, and performing a papermaking process to obtain the gypsum board covering paper. According to the preparation process of the gypsum board covering paper, the strength is high, the stability is good, the whiteness of the gypsum board covering paper is high, the cleanliness is high, and the cost is controllable.

The utility model relates to the technical field of playing cards, in particular to playing card paper which comprises a substrate layer, a plurality of sets of edge grooves used for holding playing cards are formed in the two sides of the substrate layer, waterproof coatings are coated on the surface of the substrate layer and the side walls of inner cavities of the multiple sets of edge grooves, and a plurality of sets of particle blocks are evenly embedded in the waterproof coatings. A plurality of groups of grooves are further formed in the substrate layer, and elastic pieces are arranged in the plurality of groups of grooves; by means of the edge grooves formed in the substrate layer and the waterproof coating on the surface of the substrate layer, the dustproof and waterproof effects can be achieved, the conditions of abrasion and the like of the substrate layer are avoided, meanwhile, a user can conveniently hold the substrate layer, and by means of the elastic pieces arranged in the grooves in the substrate layer, the situation that two or more substrates are grabbed at a time can be avoided; meanwhile, the poker card has good pressure resistance and bending resistance, and the situations that the poker card is prone to cracking, deformation and the like in the long-term use process are reduced.

This invention discloses an ultra-thin, highly water-resistant, biodegradable crepe paper mulch film and its preparation method, aiming to replace traditional plastic mulch film, solve the problem of agricultural mulch film pollution, and promote the development of organic agriculture. This paper mulch film consists of layers of topcoat and core pulp. The topcoat is mainly composed of corn starch, silicone water-resistant agent, and water (by weight, 5-10 parts, 2-6 parts, and 84-93 parts, respectively). The silicone water-resistant agent contains carboxyl groups, alcohol hydroxyl groups, and polysiloxane oxygen-containing functional groups, possessing both excellent water resistance and environmental friendliness. The basis weight of the topcoat is 2-3 g / m². The core pulp is made from 100% unbleached recycled fiber, with a basis weight of 30-38 g / m². The paper mulch film has a wrinkling rate of 10-20%. The paper mulch film has excellent technical indicators: thickness 1.5-2.5 mm / 16 ply, longitudinal elongation 6-15%, longitudinal tensile strength 12000-20000 mN, longitudinal wet strength 4000-8000 mN, water absorption 20-35 g / m² (3 layers for 60 seconds), and visible light transmittance 0.3-1.5%. Its low cost, combined with high water resistance, good elasticity and biodegradability, makes it an ideal upgrade solution for the agricultural mulch film industry.

The embodiment of the present application provides a kind of preparation method of high air permeability bamboo pulp lining paper, comprising: S1: fiber raw material is scattered pulp to form first pulp, and the concentration of scattered pulp is 4-6%, and the proportion of bamboo pulp fiber in fiber raw material is greater than or equal to 95%, and the average length of the bamboo pulp fiber is greater than or equal to 1.6mm, and the content of small component in bamboo pulp fiber is less than or equal to 1%, and the proportion of bamboo pulp fiber with length of 1-1.5mm is 6-15%, and then it is ground, formed, dried and wrinkled to form high air permeability bamboo pulp lining paper, so that the high air permeability bamboo pulp lining paper formed by the above method has high strength and high air permeability, and the air permeability is improved by more than 17% compared with the prior art.

The invention discloses a cigarette paper colorant which comprises one or a mixture of more of a red colorant, a yellow colorant and a blue colorant in any proportion, the red colorant is prepared from the following raw materials: monascus red, mulberry red, erythrosine, carmine, amaranth, polyaluminum chloride, tea polyphenol and sodium malate; the yellow colorant is prepared from the following raw materials: sea-buckthorn powder, beta-carotene, xanthophyll, alum and tea polyphenol; the blue colorant is prepared from the following raw materials in parts: phycocyanin, gardenia blue, brilliant blue, polyaluminum chloride and tannic acid. According to the invention, various required colors are rapidly blended based on the natural pigment, the color phase of the coloring agent is stabilized, a three-primary-color (red, yellow and blue) formula design based on the natural pigment is developed, and the method has important application value for cigarette paper coloring.

The application discloses a high-strength resource-saving type cigarette tipping paper and a preparation method thereof, and belongs to the technical field of cigarette packaging materials. The tipping paper comprises plant fibers, fillers and a composite reinforcing material. The composite reinforcing material is a cellulose nanofibril-based aerogel particle, which has an oriented and arranged porous channel structure inside, and a hydrophobic outer surface and a hydrophilic inner surface, with a static water contact angle difference between the outer surface and the inner surface being at least 30 degrees. The preparation comprises the following steps: mixing plant fiber pulp, fillers and the pre-dispersed composite reinforcing material, and then papermaking. The composite reinforcing material with specific structure and surface properties enables the tipping paper to achieve resource saving while adding 15%-35% fillers, and still has high longitudinal tensile strength, high air permeability and high wet strength retention rate, and has excellent comprehensive performance.

The application belongs to the technical field of papermaking, and particularly relates to an anti-skid paper base for a coating mold and a preparation method thereof. In order to solve the problem that the coating mold lacks effective anti-skid design in the prior art, the application provides an anti-skid paper base for a coating mold and a preparation method thereof. The anti-skid paper base is provided with a coating layer on the front and back surfaces of the base body. The front coating layer comprises a styrene-acrylic latex, a butadiene-styrene latex, a polyurethane resin and modified alkali lignin. The back coating layer is added with components such as nano-silicon dioxide and nano-calcium carbonate to improve the anti-skid performance. The preparation process involves steps such as wood pulp disintegration, chemical addition, molding spraying, glue dipping and drying, high-temperature cross-linking and groove modification, so that the final product has high strength, good air permeability and water resistance, and the friction coefficient is significantly improved.

The present application provides a matte article having excellent visibility and texture of a matte effect, and excellent rough tactile sensation. The matte article has a surface shape having an Spc (arithmetic mean curvature of a protrusion top) of more than 4000 mm ‑1 , and an Rsm (average length of a curved element) of 30 μm or more as defined in JIS B0601:2013.

The disclosure provides a decorative sheet having a low gloss and imparting a smooth feel. There is provided a decorative sheet (1) including a primary film layer (2) and a surface protective layer (5) provided to one side of the primary film layer (2), wherein the surface protective layer (5) has a surface provided with an uneven structure including a plurality of ridge portions each protruding in a ridge-like shape; the uneven structure of the surface protective layer (5) have a protruding peak height Rpk of less than 3.5 µm; and an absorption spectrum obtained from Fourier infrared spectrometry of the surface protective layer (5) has a ratio I1095 / I1725 of 0.65 or more, that is a ratio of a maximum value I1095 in the wavenumber range of 1085 to 1105 cm-1 to a maximum value I1725 in the wavenumber range of 1715 to 1735 cm-1.

The present application relates to the technical field of green packaging materials, and particularly relates to an environment-degradable kraft paper lunch box, a composition and a preparation process, the environment-degradable kraft paper lunch box is prepared from food-grade unbleached kraft paper as a base material layer of the kraft paper lunch box, a dense anti-leakage inner layer of the kraft paper lunch box is formed on one side of the base material layer by PLA film coating, an environment-degradable composition coating composed of nanocellulose, modified starch and sodium bicarbonate is formed on the other side of the base material layer by in-situ foaming to form a microporous fluffy structure layer of the kraft paper lunch box, and an environment-degradable closed layer formed by low-temperature coating of water-based bio-based coating is arranged on the outer surface of the microporous fluffy structure layer; the present application constructs an efficient heat insulation structure with precisely matched thickness and performance requirements, and provides a kraft paper lunch box with excellent heat insulation performance, full environmental protection, degradability and a gradient structure that can be uniformly and controllably realized by a precise process, and an efficient preparation method thereof.

The invention discloses a temperature change process for tipping paper. The temperature change process comprises the following steps: step 1, preparing microcapsule slurry; step 2, preparing temperature change ink; step 3, pretreating a base material; the temperature change functional layer is prepared from the specific ternary core material of the crystal violet lactone, the bisphenol A and the saturated monohydric alcohol, accurate control over a specific color change temperature point and rapid and high-contrast reversible color development in a wide temperature range are achieved, meanwhile, the microencapsulation structure effectively isolates the influence of the external environment on the temperature change core material, and the temperature change core material has the advantages that the temperature change function layer is prepared, and the color change effect is good. The reversible frequency of color change is greatly increased, the performance attenuation is slow, the service life is long, and the surface energy of the substrate subjected to plasma treatment can be improved, so that the binding force is improved, and the temperature change functional layer is not easy to fall off.

The invention discloses a blueberry pomace coloring agent with an aroma enhancement function, a preparation method of the blueberry pomace coloring agent and application of cigarette paper, and belongs to the technical field of cigarette additives. The preparation method takes blueberry processing pomace as a raw material, and sequentially comprises the following steps: washing with ethanol with a specific concentration to remove impurities, carrying out ultrasonic synergistic extraction on pigments and flavor substances by adopting an acid-containing ethanol solution, carrying out two-step specific elution by adopting macroporous adsorption resin to enrich target functional components, and finally concentrating and drying to obtain the coloring agent. The color value of the coloring agent prepared by the method is not less than 50, after the coloring agent is applied to cigarette paper, the cigarette paper can be endowed with stable purple and fresh blueberry fruity flavor at the same time, and the fruity flavor prominence degree in sensory evaluation is improved by not less than 10%. According to the method, high-value utilization of the waste pomace is achieved, the limitation that only color retaining and impurity reducing can be achieved in a traditional process is broken through, and an innovative approach is provided for developing high-end characteristic cigarette products.

The invention discloses a sodium alginate coating film and a preparation method thereof in the technical field of coating film materials. The sodium alginate coating film is formed by crosslinking sodium alginate derived from seaweed or seaweed and soluble calcium. The preparation method comprises the following two steps: sodium alginate extraction and coating preparation: firstly, extracting sodium alginate powder from seaweed or sea grass through raw material pretreatment, alkali liquor extraction and purification treatment; and dissolving the powder in cold water to prepare a coating liquid, coating the coating liquid on the surface of paper, drying, immersing into a calcium solution, cross-linking, and drying again to obtain the sodium alginate coated paper product. The covering film is prepared from food-grade natural raw materials, has no chemical substance migration risk, can be completely degraded, has toughness equivalent to that of a traditional plastic covering film and good water resistance, oil resistance and high temperature resistance, is wide in raw material source and simple in preparation process, is suitable for various paper products such as paper boxes for food, and has wide application prospects. The problems that a traditional plastic film pollutes the environment, harms human health and is difficult to recycle are solved.

The utility model discloses electrical insulation paper for preventing insulation breakdown, which comprises a polyethylene core layer, heat dissipation coatings, a hollow fiber layer and a high-temperature-resistant external insulation layer, the heat dissipation coatings are arranged on two sides of the polyethylene core layer, the hollow fiber layer is arranged on one side of the heat dissipation coatings, and the high-temperature-resistant external insulation layer is arranged on one side of the hollow fiber layer. The electric insulation paper is reasonable in structural design, the loose and porous heat dissipation coating is adopted, the edge part of the heat dissipation coating is arranged outside, the heat accumulation amount of the area of the electric insulation paper can be reduced, and meanwhile the hollow fiber layer is matched, so that the circulation performance of air flow in the electric insulation paper can be enhanced, and the flexibility and elasticity of the electric insulation paper can be enhanced.

The present application relates to papermaking technical field, especially to a kind of anti-myopia yellow light absorption dye preparation method and myopia protection paper.The present application discloses a kind of anti-myopia yellow light absorption dye preparation method, dye preparation is diazotized to p-nitroaniline, coupled with 2-(2-hydroxy-5-sulfonic acid group phenyl) benzotriazole, salting-out, then with zinc sulfate, sodium sulfide complex azo dye-zinc sulfide complex is obtained.The protection paper is made by 3D printing texture forming and multiple composite function layer, mixed dye, 3D printing net form paper is made of pulp;Coated with bottom layer composite fluid, spray nano-silicon dioxide to obtain first-stage processing paper;Pretreatment dye coating, crosslinking to obtain secondary processing paper;Hot-pressing copolymerization fiber membrane and fumigation are obtained.The paper can prevent myopia, and is suitable for writing and printing.

The invention discloses waterproof and dampproof degradable paper as well as a preparation method and application thereof. The waterproof and dampproof degradable paper comprises raw paper and a waterproof and degradable coating coated on at least one surface of the raw paper, the waterproof degradable coating comprises a water-based acrylic emulsion, a fluoride-free waterproof additive, a biomass reinforcing filler, a coalescing agent, an alkyne diol surfactant and a defoaming agent. The fluoride-free waterproof additive is prepared from alkyl polyglucoside and polyglycerol fatty acid ester in a mass ratio of (1: 2)-(2: 1); the biomass reinforcing filler is prepared from esterified modified starch and nano cellulose in a mass ratio of (3 to 5) to 1. The excellent instant waterproof and moisture-proof performance of the coating is realized, and the Cobb value is obviously reduced; the biomass filler greatly improves the biomass content of the coating, so that the coating can be quickly and thoroughly degraded under a composting condition; and the risk of persistent pollutants is eradicated by a fluorine-free formula, so that efficient balance of waterproofness, mechanical strength and environment-friendly degradability is integrally realized.