780results about "Flexible covers" patented technology

The present invention relates to a method for manufacturing a barrier-coated substrate web, coated with a layer of reduced graphene oxide. The invention further relates to laminated packaging materials comprising the barrier-coated substrate web, in particular intended for liquid carton food packaging, and to liquid carton packaging containers comprising the laminated packaging material.

The utility model relates to intelligent equipment pasting film device technical field especially discloses a split cooperation formula pasting film device, including bearing base and with bearing base cooperation use's positioning frame, external intelligent terminal passes via bearing base limit, be equipped with first resistance and second resistance on the positioning frame, the positioning frame is used for the outside of external intelligent terminal of bearing base limit and is set, makes external intelligent terminal between bearing base and positioning frame, first resistance is used for external resistance smart terminal's screen frame, external protective film is used for inserting between second resistance and external intelligent terminal's screen, positioning frame is equipped with abstracts the mouth, when positioning frame sets in the outside of external intelligent terminal, the release film of protective film is driven under the draw -in strip and takes out positioning frame through abstracts the mouth to make the functional film of protective film pastes to the screen surface of external intelligent terminal.

The application discloses a multi-carboxyl copolymer aqueous composition for pulp adding in packaging paperboard, synergism in short-stay pulp of packaging paper and fiber synergism in wet end of bamboo pulp paper, and a preparation and application method thereof, and belongs to the technical field of pulp and paper chemicals and wet end chemical control. The composition contains carboxyl-rich copolymer, and can be selected as high filtration rate homogeneous aqueous solution type, flexible type acid or bamboo pulp low cation density copolymer according to paper types, and is prepared through water phase free radical polymerization. In application, the composition is diluted and then added in a divided mode after a fan pump outlet to a pressure screen inlet or after a cationic polyacrylamide retention agent or in a bamboo pulp system. The method is beneficial to improving fiber combination, drainage stability, first-pass retention rate, white water stability and paper strength, and improving the adaptability of wet end dosing windows of different paper types.

To provide a resin sheet containing a polystyrene-based resin and a plant-derived polyethylene-based resin which has both excellent notch breaking properties and excellent impact resistance.SOLUTION: A resin sheet has a base material layer containing a polystyrene-based resin, a plant-derived polyethylene-based resin, and a compatibilizer for compatibilizing the polystyrene-based resin and the plant-derived polyethylene-based resin, wherein the polystyrene-based resin may contain a butadiene rubber or no butadiene rubber, when the polystyrene-based resin contains the butadiene rubber, a median size of the butadiene rubber is 3.5 μm or less, and a content of the butadiene rubber in the base material layer is more than 0 mass% and 3 mass% or less.SELECTED DRAWING: Figure 1

A low basis weight, low opacity paper is disclosed. The low opacity paper is made from a fiber web containing highly refined cellulose fibers. The fiber web is coated with a bio-based wax such as coconut-based wax, palm-based wax, or soy-based wax. The resulting product may have a relatively low basis weight and relatively low opacity. Therefore, the product may have excellent transparency or translucency characteristics.

This invention relates to the field of packaging film technology and provides a low-temperature polyolefin packaging film and its preparation method. The packaging film comprises a three-layer co-extruded structure consisting of an outer layer, a middle layer, and an inner layer. The components of each layer are as follows: Inner layer: metallocene polyolefin, high-performance polypropylene, modified lignin nanofibers, and erucamide / silica composite microspheres; Middle layer: PCR, modified nano-kaolinite, and trimethylolpropane triacrylate; Outer layer: PCR, modified tourmaline nanotubes, benzoyl peroxide microcapsules, and polydopamine-coated chitosan. This invention uses PCR, which is more energy-efficient and environmentally friendly. The addition of modified lignin nanofibers to the inner layer improves tensile strength; the addition of modified nano-kaolinite to the middle layer improves thermal shrinkage; the addition of modified tourmaline nanotubes to the outer layer lowers the crosslinking reaction initiation temperature and improves shrinkage; and the addition of polydopamine-coated chitosan allows for reversible recombination upon damage, improving puncture strength.

The present disclosure provides a heat-sealable paper product for use in overwrapping, wherein the heat-sealable paper product: —comprises a paper substrate being a machine-glazed (MG) kraft paper having a glazed side and a non-glazed side, wherein the glazed side of the MG kraft paper is coated with a heat-sealable coating; —has thickness of equal to or below 85 μm according to ISO 534:2011; —has a tensile energy absorption (TEA) in cross direction (CD) of at least 60 J / m2 according to ISO 1924-3:2011; and—has a burst strength of at least 170 kPa according to ISO 2758:2014. The present disclosure also provides a method of producing a heat-sealable paper product for use in overwrapping as well as a method of overwrapping an item in a heat-sealable paper product.

The application discloses a cross-linked network structure radiation cooling film and a preparation method and application thereof, and belongs to the technical field of radiation cooling materials. Bacterial cellulose and water-based acrylic acid are mixed to obtain a bacterial cellulose solution in a state of adhesion; TiO2 is mixed with deionized water, and ultrasonic treatment is performed to obtain a uniformly dispersed TiO2 solution; the TiO2 solution is poured into the bacterial cellulose solution to obtain a white solution; the white solution is poured into a culture dish and dried to obtain a porous bacterial cellulose composite film with a cross-linked network structure; polydimethylsiloxane is melted into cyclohexane, sprayed on one side of the porous bacterial cellulose composite film by using a spray gun, and then subjected to heat treatment to obtain a cross-linked network structure radiation cooling film with hydrophilic on one side and hydrophobic on the other side, which has high solar reflectivity and is beneficial to cooling during the day; the surface hydrophobic treatment of the polydimethylsiloxane is beneficial to dealing with dust and complex weather during daily use, so that the radiation cooling can be maintained for a long time.

A non-foil laminated packaging material for heat-sealing into liquid or semi-liquid food packaging comprises: - a barrier material formed of a barrier substrate layer carrying a vapor-deposited metal layer and an optional reduced graphene oxide layer adjacent to the vapor-deposited metal layer; and - a heat-sealing layer. A method for manufacturing the laminated packaging material, a packaging container, and a method for forming the packaging container from the laminated packaging material are also described.

A packaging article (12) comprising: a sheet of paperboard material comprising a fluted layer (42) covered by opposing first and second facing layers (44, 45); a portion of the sheet defining a curve region (34a, 34b, 36a, 36b) comprising a plurality of laterally spaced elongate rows of cuts (48) extending at least through the full depth of the first facing layer (44) and not extending through the second facing layer (45); wherein the curve region is curved with the first facing layer being concave about an axis generally aligned in a direction of the cuts, thereby generating a convex curved outer profile of the second facing layer.

The application of a PVDC / gallium nitride composite material is characterized by being used in food preservation packaging, medical instrument packaging or fruit and vegetable modified atmosphere preservation film, and having the functions of visible light catalytic sterilization and ethylene degradation. The application belongs to the field of polymer composite materials and photocatalysis technology, and particularly relates to a PVDC composite material carrying gallium nitride and having the function of photocatalytic sterilization, and a preparation method and application thereof.

The present invention provides a rice ball packaging sheet that allows easy unpacking. A rice ball food packaging sheet 1 according to the present invention: includes an outer film 2, an inner film 3 which is disposed in a layered manner on the outer film and which is separable into right and left portions, and a sheet-like food 4 which is sandwiched between the outer film and the inner film; and is obtained by heat-sealing the outer film and the inner film together along the outer periphery of the sheet-like food. The outer film has an outer groove 21 which is recessed relative to the surface of the outer film and which is formed by laser processing. Outer bank sections 22 which are raised relative to the surface of the outer film are formed on both sides of the outer groove.

The utility model belongs to carton layered partition board technical field discloses a kind of carton layered partition board, including a plurality of first partition board, the top end side of a plurality of first partition board is equipped with a plurality of first clamping slot, a plurality of first partition board are all connected with a plurality of second partition board by a plurality of first clamping slot clamping, the bottom end of second partition board is equipped with a plurality of second clamping slot corresponding a plurality of first clamping slot, the bottom end of second partition board is equipped with a plurality of connecting blocks, the both sides of connecting block are all connected with waterproof board, the bottom end of a plurality of first partition board and a plurality of second partition board is equipped with batten. The device simple and reasonable in structure, novel in design, easy to operate, with high practicability, it is convenient to widely use.

A polymeric material is provided that includes a modified polyvinyl polymer having a polyvinyl chain including one or more units having moieties produced by reaction of a reactant with a polyvinyl alcohol. A method of making a modified polyvinyl polymer includes reacting a polyvinyl alcohol with one or more reactants in the presence of a solvent. Packaging includes a polymeric material including a modified polyvinyl polymer.

Wrapping paper (10, 10.3) for food (12),- comprising a paper layer (20, 20.3),- comprising a plastic film (30) which is only partially attached to the paper layer (20, 20.3) via adhesive points (40, 42),- characterized in that,- the paper layer (20, 20.3) has a basis weight of less than 30 g / m2, in particular a basis weight of about 22 g / m2,- the plastic film (30) has a thickness of less than 6 µm, in particular a thickness of about 4 µm.

The utility model discloses an anti -puncture composite PVC film, including base film, folding layer, buffer film, anti -wear film, the lower surface of base film is equipped with grid layer, and grid layer improves the tensile strength of base film, and folding layer folds three layers, and folding layer is connected on the upper surface of base film, and buffer film is connected on the upper surface of folding layer, and anti -wear film is connected on the lower surface of grid layer, and buffer film and anti -wear film improve the anti -puncture ability of base film two sides, buffer film and buffer bubble improve the buffer capacity of PVC film, when PVC film is impacted by non -sharp article, through buffer film and buffer bubble unloading, prevent the puncture problem of PVC film, and folding layer improves the thickness of PVC film, and when PVC film is punctured by sharp article, folding layer improves the puncture resistance, and PVC film is not easy to be punctured, and the base film of serpentine bending cooperates with grid layer layer, improves the elasticity of PVC film, and when PVC film can relieve the pulling force of pulling force, avoids the hole of PVC film because of pulling and appears.

To provide a barrier laminate excellent in adhesion of a barrier coat layer and an acid modified polyolefin layer.SOLUTION: A barrier laminate includes a paper substrate layer, a barrier layer, and a sealant layer in this order, and further includes an acid modified polyolefin layer between the paper substrate layer and the barrier layer or between the barrier layer and the sealant layer. In a barrier film, the barrier layer includes a base material film, a first inorganic oxide vapor-deposited layer, and a barrier coat layer in this order. The barrier coat layer is a cured film of a hydrolyzed product of metalalkoxide and a water-soluble polymer. When a surface of the barrier coat layer is measured by X-ray photoelectron spectroscopy (XPS), a ratio (M / C) of metal atoms (M) and carbon atoms (C) is 1.35 or less. The barrier coat layer has a thickness of 155 nm or more. The acid modified polyolefin layer abuts on the barrier coat layer.SELECTED DRAWING: Figure 1

The utility model discloses GRS regenerative environmental protection bag, including outer bag body and two groups of handle. The utility model, the combination of inner bag body through connecting piece and magic paste structure realizes independent use or as the quick switching of outer bag body buffer layer, and the alignment design of handle hole after the folding of connecting piece guarantees the convenience of carrying when the inner bag body is used alone, and the fixed formation of the separation cavity of the three edges of interlayer and the inner side wall of outer bag body, and the load of inner bag body is transmitted to the whole circumference of outer bag body through magic paste multi -point connection, and the honeycomb support layer in outer bag body can further promote the support strength, improve the service life, the handle is connected with outer bag body through the connecting rib, and the force is dispersed through the connecting rib when carrying, and the anti -deformation ability is enhanced, and the connecting strength of handle and outer bag body is improved.

The application relates to the technical field of composite films, and provides a temperature-resistant and oil-resistant degradable meal box film, a meal box and a preparation method. The preparation raw materials of the three layers in the degradable meal box film are strictly controlled, so that the obtained meal box film has good temperature resistance and oil resistance, high mechanical properties and low haze; meanwhile, the degradable master batch is added in the outer layer, the middle layer and the inner layer, so that the traditional plastics, polypropylene and ethylene-vinyl acetate copolymer, are converted into a new generation of biodegradable plastics which are non-toxic and harmless to nature, the obtained degradable meal box film can be completely degraded into carbon dioxide and water, microplastics are not generated, meanwhile, the performance of the plastic film is not changed, the meal box film is applied to the degradable meal box, and after use, the meal box and the film do not need to be separated, and can be synchronously degraded in an integrated mode.

This cover tape has at least a base material layer and a heat seal layer, wherein the heat seal layer contains a polystyrene-based resin (A) and an ethylene-(meth)acrylic acid copolymer (B), and the content of component (A) and the content of component (B) are, respectively, greater than 80 parts by mass but less than or equal to 95 parts by mass, and greater than or equal to 5 parts by mass but less than 20 parts by mass, with respect to a total of 100 parts by mass of component (A) and component (B).

A wet / dry surface cleaner has a surface cleaning head and an upright section moveably mounted to the surface cleaning head between an upright storage position and a reclined surface cleaning position. A solid and liquid separation stage is removably positionable on the upright section. The solid and liquid separation stage has a solid and liquid collection chamber that has a liquid porous divider provided therein. A liquid collection region is located below the divider and solid material collects on the liquid porous divider. An inlet conduit extends upwardly through a lower wall of the solid and liquid collection chamber and an internal wall partially surrounds an outlet end of the inlet conduit.

The application discloses a portable automatic film pasting machine, an automatic film pasting control system and an automatic film pasting control method. The film pasting machine comprises a machine body, a mobile phone positioning and fixing mechanism, a film body positioning mechanism, an upper cover assembly, an automatic film tearing mechanism, a roller pasting mechanism, a power supply module, a key input assembly and a main control unit; the main control unit synchronously controls the automatic film tearing mechanism and the roller pasting mechanism to move, and performs full-stroke real-time timing linkage closed-loop control on the two mechanisms based on a feedback signal, so that the mobile phone film tearing process and the mobile phone film pasting process are synchronously performed. The control system comprises a dual-mode power supply unit, a key input unit, a limiting and locking execution unit, a state detection unit, a film tearing driving unit and a pasting driving unit. The application realizes the full-process automation of mobile phone fixing, film body alignment, automatic film tearing and synchronous pasting, fundamentally eliminates the problems of bubbles, dust points and film body displacement, improves the film pasting yield and the degree of automation, and takes into account the portability and full-scene adaptation.

The present application relates to the technical field of packaging materials, and particularly relates to a degradable bamboo fiber packaging bag and a preparation method and application thereof. The packaging bag comprises the following components in parts by weight: modified bamboo fiber 20-40 parts, polylactic acid 30-50 parts, polybutylene adipate terephthalate 20-35 parts, modified starch 10-20 parts, organic montmorillonite master batch 5-15 parts, epsilon-polylysine 0.5-2 parts, plasticizer 2-5 parts, lubricant 1-3 parts, and antioxidant 0.5-2 parts. The modified bamboo fiber is bamboo fiber modified by silane coupling agent after alkali treatment. The organic montmorillonite master batch comprises organic montmorillonite and polybutylene adipate terephthalate. By using the modified bamboo fiber, modified starch, organic montmorillonite master batch and adding epsilon-polylysine, a degradable bamboo fiber packaging bag with excellent mechanical properties, good barrier properties and antibacterial function is obtained.

The present invention relates to a method for producing a barrier-coated substrate web (10; 25a) coated with a first layer (12a) of a reducing agent and a water-dispersible polymer and a second layer (13a) of reduced graphene oxide. The present invention further relates to a laminate packaging material (20a) comprising the barrier-coated substrate web (10), in particular intended for liquid carton food packaging, and to a liquid carton packaging container made of this laminate packaging material.

The utility model discloses a kind of moisture-proof composite corrugated paperboard, it is related to corrugated paperboard field, specifically a kind of moisture-proof composite corrugated paperboard, including bottom layer moisture-proof layer, inner layer corrugated core layer, intermediate barrier layer, outer layer corrugated core layer and surface layer moisture-proof layer from inside to outside are sequentially arranged;The bottom layer moisture-proof layer is PET film kraft paper, the surface layer moisture-proof layer is PE film kraft paper, the intermediate barrier layer is aluminum foil composite paper, the inner layer corrugated core layer is melamine resin modified corrugated paper, the utility model solves the current corrugated paperboard surface using coating single waterproof coating or using single layer plastic film film coating, the moisture-proof effect of this single coating processing mode is limited, and easily failure due to abrasion;Although single layer film can block part liquid water, it is difficult to solve water vapor penetration problem, and interlayer is mostly starch adhesive, swelling peeling after meeting water, cannot satisfy the long-term use demand of high humidity environment problem.

A heat-sealable paper with low basis weight and low opacity is disclosed. The heat-sealable paper with low opacity is made from a fiber web containing highly refined cellulose fibers. The fiber web may be initially coated with a bio-based wax such as coconut-based wax. The fiber web may be coated with a coating composition that forms a heat-sealable coating on the outer surface of the coated paper. The product may have excellent transparency or translucency properties. The product also has excellent heat-sealability properties that make the product well-suited for producing packages.

The utility model discloses a kind of sealing label stickers, including label main body layer, outer adhesive layer and outer protective layer;Label main body layer includes printable layer and intermediate layer;Intermediate layer and printable layer are fixedly connected by inner adhesive layer;Outer adhesive layer is fixedly set on label main body layer;Outer protective layer is coated with release oil, and outer protective layer is covered and set on outer adhesive layer;The back of label main body layer is provided with fixed layer.The sealing label sticker of the utility model has strong adhesive force, and is not easy to fall off when being set on packaging bag;And user can realize the closure of bag opening that has been opened by the adhesion of sealing label sticker and bag opening part, and support the effect of multiple times uncovering and re-closing, maintain the integrity of bag opening, uncover, and adhesion mode is simple, reduce operation trouble, improve user experience;The multilayer structure of the utility model makes label pattern more able to withstand external scratch and other loss factors, keep pattern clear and beautiful, improve durability.

The present invention provides materials and composite materials comprising layer (A) comprising afirst polysaccharide which has been derivatised to comprise fatty acid ester moieties. Also provided are substrates coated with the material and composite material, and processes for preparing the material, composite material and coated substrate.

The application discloses an anti-caking salt product and a preparation method thereof. The anti-caking salt product comprises raw salt and an anti-caking agent, the anti-caking agent is food-grade ferric tartrate, and the addition amount of the anti-caking agent is 0.05-0.106 g / kg of the salt. The core of the anti-caking method of the salt lies in that the food-grade ferric tartrate is used as the main anti-caking agent, the addition amount is 0.05-0.106 g / kg of the salt, the salt is dried at 100 DEG C for 4 hours, then the anti-caking agent is added, and the water vapor transmission rate is less than or equal to 0.5 g / m 2 24h of high-barrier material packaging, while 6 g of quicklime or 2 g of calcium chloride desiccant is added in every 200 g of the salt. The application also controls the Mg 2+ content in the salt to be less than or equal to 0.02%, the KCl content to be less than or equal to 10%, and the particle size to be in the range of 0.45-0.6 mm, so that the salt caking is synergistically inhibited from multiple dimensions. The method has extremely significant anti-caking effect (the caking rate is only 8.7% after 15 days of open storage), is safe and economical, and has a simple process, and can effectively replace or reduce the use of potassium ferrocyanide, and is suitable for large-scale industrial production.