658 results about "Coated paper" patented technology

The invention discloses degradable coated paper and a preparation method thereof, and belongs to the field of high polymer materials. Aiming at the problem of single function of the existing coated paper, the invention provides the degradable coated paper, the degradable coated paper comprises backing paper and a coated layer, and the coated layer comprises the following components in parts by weight: 50-80 parts of polylactic acid and 10-25 parts of poly (ethylene terephthalate) succinate; the plastic is prepared from the following components in parts by weight: 1-5 parts of biodegradable chitosan, 10-20 parts of modified talcum powder, 0.3-1.0 part of a plasticizer, 0.2-1.0 part of a lubricant, 0.2-0.5 part of an antioxidant and 0.2-0.5 part of a compatilizer. The antibacterial purpose is achieved by selecting the degradable chitosan, and meanwhile the mechanical performance of the coated paper is not affected; the purposes of heat preservation, cost reduction and efficiency improvement are achieved through the modified talcum powder, so that the finally prepared degradable coated paper has multiple functions of degradability, heat preservation and antibiosis; meanwhile, all the used raw materials are biodegradable, so that the environment-friendly significance is higher. The operation is simple, the convenience and the efficiency are higher, and the use prospect is higher.

The invention discloses a degradable PHA / PU composite water-based barrier coating and a coated paper product, and belongs to the field of biodegradable polymer coatings. The coating composition comprises a high proportion of polyhydroxyalkanoates as a barrier phase and a bio-based polyurethane as a toughening and heat sealing phase. The key innovation lies in that the cooperation of rigid barrier and flexible functions is realized by accurately regulating and controlling the ratio of two phases and adopting bio-based crosslinking, and the problem that the barrier property, the heat sealability and the flexibility of a traditional single material are difficult to consider at the same time is solved under the condition of low coating amount. The invention provides a full-life-cycle green packaging solution, aims to replace a polyethylene spraying film and a fluorine-containing coating, and has a remarkable application value in the field of food packaging.

A polyhydroxyalkanoate (PHA) water-based coating, a preparation method therefor, and a use thereof. The coating comprises a PHA suspension and an auxiliary agent, wherein the melting point of PHA is 100-120°C, and the PHA is a copolymer containing at least two polymerization monomers. By selecting the PHA meeting specific conditions, the obtained coating is environment-friendly and degradable, and the prepared coated paper can be directly pulped and recycled. The coated paper has good comprehensive performance in terms of stable standing, temperature resistance, oil resistance, environment friendliness, and coating flatness, and can meet the requirement for containing high-temperature liquids.

The invention discloses a bio-based PHA oil-resistant and moisture-permeable coating for hamburger paper, coated paper and a preparation method, and belongs to the technical field of bio-based high polymer materials and paper-based food packaging. The coating is a PHA aqueous dispersion, and mainly comprises a semi-crystalline matrix PHA and a low-crystallinity or amorphous toughening PHA. The core of the coating is that after the coating is dried to form a film, a functional gradient structure can be spontaneously formed in the thickness direction of the coating: an interface layer close to a paper base is rich in toughening PHA so as to enhance toughness and adhesive force; and the surface layer of the coating is rich in matrix PHA so as to maximize the oil resistance. By means of the functional gradient structural design, the packaging material integrates oil resistance, moisture permeability and flexibility of the packaging material, has the degradable environment-friendly characteristic and is suitable for packaging high-grease food.

The application discloses degradable PHA / PU composite water-based barrier coating and coated paper products, and belongs to the field of biodegradable polymer coating. The coating composition contains a high proportion of polyhydroxyalkanoate as a barrier phase and a bio-based polyurethane as a toughening and heat-sealing phase. The key innovation is that by precisely controlling the ratio of the two phases and using bio-based cross-linking, the synergy of rigid barrier and flexible function is achieved, and the problem that the barrier property, heat-sealing property and flexibility of traditional single material are difficult to balance is solved at low coating amount. The application provides a full life cycle green packaging solution, which aims to replace polyethylene shower film and fluorine-containing coating, and has significant application value in the field of food packaging.

The invention relates to a coated paper film thickness measuring device, and relates to the technical field of film thickness measurement, the coated paper film thickness measuring device comprises a workbench, two side plates, four mounting seats and two back plates, the two side plates are vertically fixed on the left side and the right side of the upper surface of the workbench, and every two of the four mounting seats form a group; the two groups of mounting seats are respectively fixed with the upper surface of the workbench and the top ends of the two side plates, the two back plates are both located at the rear side of the workbench and are fixed with the ground, and the mounting seats are provided with thickness measuring mechanisms for measuring the thickness of a coated paper film. According to the coated paper film thickness measuring device, the horizontal position of the photoelectric detector can be accurately controlled through the linear module, automatic alignment of the photoelectric detector on the movable plate is achieved through the laser transmitter and the laser receiver, and the moving distance of the movable plate is monitored in real time through the photoelectric displacement sensor; therefore, under the cooperation of the laser transmitter and the laser receiver with the photoelectric displacement sensor, the two photoelectric detectors are always kept in high-precision alignment.

The invention relates to the field of packaging materials, and discloses low-temperature heat-sealing water-based coated paper and a preparation method and application thereof.The water-based coated paper comprises a base paper layer and a water-based coating, and the water-based coating comprises water-based ethylene-acrylic acid copolymer emulsion, modified nano-silica, a coalescing agent and water; a cardanol derivative is introduced into the water-based ethylene-acrylic acid copolymer emulsion as a functional component; the cardanol derivative is prepared by reacting epoxidized cardanol with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and then grafting with acryloyl chloride. The preparation method comprises the following steps: reacting epoxidized cardanol with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide; the modified nano silicon dioxide is prepared by mixing aminated nano silicon dioxide and chitosan and adding a cross-linking agent prepared by grafting phytic acid and ethylene glycol diglycidyl ether. The water-based coating paper prepared by the invention overcomes the defects that the existing BOPP film is not environment-friendly, and the conventional coating paper is high in heat sealing temperature and easy to stick; meanwhile, good mechanical properties, water resistance and flame retardance are achieved.

The utility model discloses a heat sealing device for coated paper production, which comprises a base, two ends of the base are respectively and movably connected with a feeding roller and a receiving roller, the top of the base is provided with a coating machine, an air heater is arranged in the coating machine, the tops of two ends of the base are movably connected with clamping jaws, one side of each clamping jaw is provided with a first groove, and the other side of each clamping jaw is provided with a second groove. A plurality of first bosses are arranged at the two ends of the base correspondingly, limiting holes are transversely formed in the tops of the clamping jaws, a plurality of second bosses are arranged on the two sides of the top of the base correspondingly, and positioning pins are transversely and movably connected between the second bosses. When a feeding roller and a receiving roller need to be replaced, a handle is pulled to pull out a positioning pin, rapid replacement can be achieved by taking up a clamping jaw, the structure is simple, operation is convenient, and the problems that according to an existing heat sealing device for PE coated paper production, paper on the feeding roller needs to be replaced after heat sealing, replacement is troublesome, and cost is high are solved. And the production efficiency is influenced to a certain extent.

The invention discloses a multifunctional coated paper production device, which comprises four unreeling mechanisms, two unreeling mechanisms are a first PET film unreeling assembly and a second PET film unreeling assembly, and the rest two unreeling mechanisms are paper unreeling assemblies; the number of the winding mechanisms is two; the four co-extrusion mechanisms are respectively a first co-extrusion assembly, a second co-extrusion assembly, a third co-extrusion assembly and a fourth co-extrusion assembly. According to the multifunctional coated paper production device, the four unwinding mechanisms, the two winding mechanisms, the two extrusion mechanisms and the two co-extrusion mechanisms are arranged, so that PE films can be conveniently coated at different positions of paper, and the PE films and the PET films are connected in a co-extrusion mode to produce different types of composite coated paper, multiple production devices are not needed, and therefore the production cost is greatly reduced, and the production efficiency is improved. And meanwhile, the production occupied space is reduced.

The present invention relates generally to the field of polymer dispersion coated, paper-based flexible packaging materials. In particular, the present invention relates to improving the barrier properties of polymer dispersion coated 5 paper-based flexible packaging materials. Embodiments of the present invention relate to a process for improving the barrier properties of polymer dispersion coated paper-based flexible packaging materials comprising the step of applying an Al2O3 coating to at least one surface of the dispersion coated paper-based flexible packaging materials, for example by using atomic layer deposition; and an Al2O3-coated paper material 10 obtainable by such a process.

The present invention relates to a composition comprising an aqueous dispersion of biodegradable polymer particles, a method of preparing the composition, and a method of preparing a coated substrate comprising the composition. The composition is useful as a coating applied to a substrate, particularly a paper substrate. The coated paper is useful as a single layered barrier coated paper or paperboard.

The invention belongs to the technical field of coated paper, and particularly relates to a coated paper humidifying water recycling device which comprises an operation box, an opening communicated with the outside is formed in the top of the operation box, a box cover matched with the opening is arranged at the top of the operation box, and a first recycling body is connected to the box cover. A first recycling main body is arranged on the bottom wall of the operation box, a second recycling main body is arranged on the bottom wall of the operation box, the first recycling main body and the second recycling main body are arranged in a matched mode, a horizontally-arranged operation frame is arranged in the operation box, two symmetrically-arranged first supporting plates are fixedly connected to the operation frame, and two symmetrically-arranged baffles are connected to the inner wall of the operation box in a clamped mode; and the two baffles are matched with the operation frame. By means of the device, coated paper can be evenly humidified, the humidified coated paper can be dried in time, it is avoided that the coated paper is mildewed or bred with bacteria due to the fact that the coated paper is placed in a humid environment for a long time, and water used in the humidifying process of the coated paper can be effectively recycled.

An object of the present invention is to provide a coated paper that includes a coating layer containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) with few coating defects. As a solution, the present invention provides a coated paper including a coating layer containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) and an adhesive, on at least one side of a paper substrate. A solid content weight ratio of the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) to the adhesive in the coating layer is 99.9 / 0.1 to 60.0 / 40.0.

The present invention relates to a composition comprising an aqueous dispersion of biodegradable polymer particles, a method of preparing the composition, and a method of preparing a coated substrate comprising the composition. The composition is useful as a coating applied to a substrate, particularly a paper substrate. The coated paper is useful as a single layered barrier coated paper or paperboard.

The utility model belongs to the technical field of corona treatment devices, and particularly relates to a coated paper corona treatment device which comprises a corona machine and a cleaning mechanism, the corona machine comprises a machine body, a roll shaft and a sliding groove, the roll shaft is arranged in the machine body, and the sliding groove is formed in the top of the machine body; the cleaning mechanism is arranged at the top of the machine body and comprises a shell, a lead screw, a motor, a sliding block and a cleaning component, the lead screw is arranged in the shell, the motor is arranged at the outer end of the lead screw, the sliding block penetrating through the sliding groove is arranged on the lead screw, the cleaning component is arranged at the lower end of the sliding block, and the lead screw is driven by the motor to rotate. The lead screw drives the sliding block to reciprocate, the sliding block synchronously drives the cleaning part to reciprocate, the cleaning part is in contact with the coated paper on the roll shaft, the surface of the coated paper is cleaned, and dust is prevented from being attached to the surface of the coated paper to affect the corona effect.

This invention discloses a bio-based PHA oil-blocking and moisture-permeable coating for hamburger paper, the coated paper, and its preparation method, belonging to the fields of bio-based polymer materials and paper-based food packaging technology. The coating is an aqueous dispersion of PHA, mainly comprising semi-crystalline matrix PHA and low-crystallinity or amorphous toughening PHA. Its core feature is that after the coating dries and forms a film, it spontaneously forms a functional gradient structure along the coating thickness direction: the interfacial layer near the paper substrate is rich in toughening PHA to enhance toughness and adhesion; while the surface layer is rich in matrix PHA to maximize oil-blocking performance. Through this functional gradient structure design, this invention balances the oil-blocking, moisture-permeable, and flexible properties of the packaging material, and possesses biodegradable environmental characteristics, making it suitable for high-oil food packaging.

The utility model relates to the technical field of carton structures, in particular to a waterproof and moistureproof coating carton structure, which comprises a carton body and is characterized in that at least two pairs of oppositely arranged double-layer folding cover plates are arranged at the top of the carton body, soft sealing strips are arranged on the long edges of the periphery of the top of the carton body, a moistureproof lining partition plate is arranged in the carton body, and the waterproof and moistureproof coating carton structure is arranged in the carton body. According to the utility model, a multi-layer structure is adopted to realize omnibearing water resistance and moisture resistance, the surface of the box body is coated with a polyurethane waterproof coating, and the top of the box body is provided with a double-layer folding cover plate and a sealing strip to reinforce sealing; honeycomb PP plastic partition plates are arranged inside to achieve dry and wet isolation. The bottom adopts a waterproof base matched with an arc-shaped diversion trench to discharge accumulated water; a disposable humidity sensing label is arranged to monitor humidity in real time; the cover plate is formed by compounding craft paper and PE coated paper, so that the cover plate is high in strength and moisture-proof; the handle holes are provided with double-layer reinforcing ribs to improve the bearing capacity. The structure integrates waterproof, moisture-proof and load-bearing functions and the like, and meets the use requirements of complex environments.

The invention relates to the technical field of functional paper production, in particular to a pressing and flat pasting composite process of skin-touch surface polymer coated paper, which comprises the following steps: pretreating a base material through low-temperature plasma to form a nano groove; the preparation method comprises the following steps: preparing a bottom coating solution containing sulfydryl modified polyurethane and other components, a middle coating layer containing a carbon nanotube forest and a surface coating solution containing a fluorosilicone block copolymer, and sequentially coating, drying and curing; the coated paper and the base material treated by the silicon dioxide transition layer are compounded after being subjected to vacuum hot pressing and steam treatment, and then are subjected to ultraviolet ozone treatment, so that the comprehensive performance is improved. According to the process, by innovating a coating formula and a compounding technology, the wear resistance, pollution resistance and touch performance of the coated paper are remarkably improved, and the functions of antibiosis, temperature sensing adjustment and the like are achieved; the gloss is adjustable, the adhesive force is high, the VOCs emission is low, the environmental protection property is good, and the multi-element requirements of the high-end market are met.

To provide process paper that can prevent evaporation of volatile ingredients during storage or transportation.SOLUTION: Process paper has barrier-coated paper and a release agent layer on at least one surface of the barrier-coated paper, wherein the barrier-coated paper comprises a paper substrate and a gas barrier coating layer on at least one surface, and the paper substrate has a thickness of 50 μm or more and 200 μm or less, a density of 0.5 g / cm3 or more and 1.1 g / cm3 or less, and a dry shrinkage ratio in the CD direction of 0.6% or less.SELECTED DRAWING: None

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 utility model relates to the field of full-automatic bag making equipment, in particular to a puncturing and cutting device of an environment-friendly film-coated paper bag processing production line and a production line, which comprise adjusting devices, gears, a roll shaft and puncturing and cutting knives, and are characterized in that two groups of adjusting devices are arranged and are respectively positioned on two sides of the roll shaft, and each adjusting device comprises a rotating wheel, a fixed block, an adjusting block and a screw rod, the adjusting device is installed on a film-coated paper bag processing production line through a fixing block, a screw rod is arranged on the fixing block in a penetrating mode, the upper end of the screw rod is connected with a rotating wheel, the lower end of the screw rod is connected with adjusting blocks, and the two ends of the roller shaft are connected with the two adjusting blocks respectively. According to the paper bag production equipment, single paper bags can be produced, continuous paper bags can also be produced, the continuous paper bags can be torn off one by one during use, and various requirements of customers are met.

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 a paper composite filter material for reducing hydrocyanic acid and crotonaldehyde and a preparation method and application thereof, and the preparation method comprises the following steps: adding a gelator into a solvent to form a gelator solution; transferring the gelator solution into a liquid storage tank of an intaglio printing device, and printing and coating the gelator solution in the liquid storage tank onto a paper base material by using an anilox roller; the coated paper base material is conveyed to a low-temperature tunnel, so that nanofibers of a three-dimensional network structure are formed inside and on the surface of the paper base material in a self-assembly mode; and transferring the paper base material subjected to low-temperature treatment to a drying cylinder, and drying to obtain the paper composite filter material. According to the prepared paper composite filter material, the specific surface area in contact with smoke can be increased, the paper composite filter material can make full contact with the smoke in the process that the smoke passes through a filter stick, the interception capacity of the paper filter stick on hydrocyanic acid and crotonaldehyde in mainstream smoke of cigarettes is improved through amino and carboxyl groups on the surfaces of the nanofibers, and the sensory quality of the cigarettes with the paper filter stick is improved.

The invention discloses a preparation method and application of a repulpable gallic acid-based waterproof and oil-proof agent, and belongs to the technical field of bio-based oil-proof hydrophobic paper surface coatings. The preparation method comprises the following steps: by taking alkyl gallate and epoxy chloropropane as raw materials, preparing alkyl gallate epoxy through epoxidation reaction; and uniformly mixing the alkyl gallate epoxy resin with an acid anhydride / phenol compound to obtain the alkyl gallate epoxy resin series waterproof and oil-proof agent. The structure of the bio-based waterproof and oil-proof agent prepared by the invention contains groups such as a non-polar long alkyl chain, an epoxy group and an amino group, a compact cross-linked coating can be formed on the surface and the interior of paper, and gaps between paper cellulose are filled, so that permeation of oil, water and gas is blocked, meanwhile, the adhesive force between the coating and the paper is increased, and the waterproof and oil-proof effects are improved. The fibers are more tightly combined together; non-polar long alkyl chains and benzene ring groups in the structure can endow the paper with excellent oil-proof, hydrophobic and mechanical properties, and flexible chain segments (alkyl carbon chains) with different lengths are introduced to adjust the flexibility of the coating, so that the flexibility and tensile strength of the paper can be effectively adjusted; the coating paper can be recycled and reused in an alcoholysis mode. The raw materials are easy to obtain and renewable, paper can be re-pulped after being coated, and the paper has the potential of replacing plastic packaging and meets the performance requirements of paper packaging on specific scenes such as water resistance and oil resistance.

The present disclosure relates to a coated paper. The coated paper includes a cellulosic layer and at least two coating layers on one side of the paper. The first coating applied to the paper is a barrier coating that can be made from a plant-or animal-derived component, which is preferably water-soluble or water-dispersible, more preferably water-soluble. In another aspect, the second coating may be a heat sealable coating. The coated paper is particularly suitable for use in the construction of packages.

The utility model discloses coated paper with good hydrophobicity, which comprises a coated paper body, the coated paper body comprises a base paper layer, the surface of the base paper layer is covered with a coated layer, the surface of the coated layer is fixedly coated with a first hydrophobic layer, and the surface of the first hydrophobic layer is coated with a second hydrophobic layer. And a third hydrophobic layer fixedly covers the surface of the second hydrophobic layer. According to the coated paper with good hydrophobicity, the first hydrophobic layer, the second hydrophobic layer and the third hydrophobic layer are combined together to form a hydrophobic reinforcing structure; the surface of the coated paper body is covered with the hydrophobic reinforcing structure, the waterproof performance of the coated paper body can be improved, when the coated paper body is used as a paper bag or a paper box, sufficient waterproof work can be fully conducted on objects wrapped in the coated paper body, and the coated paper is more suitable for packaging objects prone to being affected with damp and damaged.

The invention discloses biodegradable coated paper and a preparation method thereof, and relates to the technical field of polymer materials. The coated paper comprises a polylactic acid compound, wherein the polylactic acid compound comprises the following components in percentage by weight: 2-40% of long-chain branched polylactic acid containing ZnO nanoparticles and 60-98% of polylactic resin. According to the biodegradable coated paper and the preparation method thereof provided by the invention, through introduction of ZnO nanoparticles, physical crosslinking points and nucleating points in a polylactic acid compound system are increased, and the mechanical property, crystallization property, hot water resistance and oil resistance of PLA can be remarkably improved, so that the prepared coated paper has good antibacterial property and excellent comprehensive performance.

The invention relates to the technical field of paper coating defect detection, and discloses a paper coating defect classification method and system based on infrared image recognition, and the method comprises the steps: dividing the surface of coated paper into a plurality of detection regions; a multi-agent distribution collaborative optimization algorithm is utilized, and according to detection resources and progress, detection tasks are distributed and sorted, so that an optimized partition detection execution sequence is obtained; based on a coupled vibration modal feature extraction algorithm and a convolutional neural network model, under the guidance of a partition detection execution sequence, feature extraction is performed on the original infrared image of each partition, and a multi-dimensional partition feature set containing infrared image features and aerodynamic modal features is obtained; and respectively inputting the multi-dimensional partition features into different defect classification models, and obtaining a final coated paper defect classification result of each partition in a weighted voting mode. According to the invention, high-precision defect identification of the coated paper is realized.

The present invention provides a polyhydroxyalkanoate water-based coating and a preparation method and application thereof, wherein the polyhydroxyalkanoate water-based coating comprises a polyhydroxyalkanoate suspension and an auxiliary agent; wherein the melting point of the polyhydroxyalkanoate is 100-120°C, and the polyhydroxyalkanoate comprises a copolymer of at least two polymerized monomers. The present invention selects polyhydroxyalkanoates that meet specific conditions, and the water-based coating prepared thereby can be used for coating paper, etc. The water-based coating is environmentally friendly and degradable, and the prepared coated paper can be directly pulped and reused, without the need for separation of the coating and the pulp, and without separation cost investment. The coated paper obtained by the present invention has good comprehensive properties such as static stability, temperature resistance, oil resistance, environmental protection, and coating flatness, and does not require an adhesive to glue the coating to a substrate such as base paper, and can meet the requirements of containing high-temperature liquids.

The invention provides a special reinforcing agent for coated paper, which is prepared from the following raw materials in parts by mass: 10 parts of polyvinyl alcohol; 1 to 3 parts of cationic polyacrylamide; 1-5 parts of a bactericide; 1 to 5 parts of a defoaming agent; 5 to 10 parts of a VAE emulsion; 5 to 10 parts of paraffin emulsion; 1 to 3 parts of redispersible latex powder; 2 to 4 parts of borax; 1-3 parts of a filler; 0.5 to 1.5 parts of cellulose; and 43.5 to 73.5 parts of deionized water. The special reinforcing agent for the coated paper is used as a prime coat paint and is used for prime coat of common fiber papermaking to form a prime coat layer, so that the obtained coated base paper has higher surface strength and better moisture resistance and smoothness, and can be used for preparing high-quality coated paper.