4594results about "Domestic packaging" patented technology

The invention relates to the technical field of composite film preparation, in particular to a multi-layer co-extrusion nano ceramic coating high-barrier medicine packaging composite film and a preparation method thereof.The multi-layer co-extrusion nano ceramic coating high-barrier medicine packaging composite film comprises a base material layer, a gas barrier layer, a bonding transition layer and a nano ceramic functional coating; the base material layer comprises the following components in parts by mass: 80-100 parts of biaxially oriented polypropylene; 20 to 30 parts of metallocene linear low density polyethylene; 5 to 8 parts of nano titanium dioxide; 0.5 to 1 part of beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid; and 0.3 to 0.6 part of calcium stearate. Through the multi-layer co-extrusion and gradient curing technology and the five-layer co-extrusion technology, it is ensured that the thickness of a base film is uniform and interlayer bonding is firm, the adhesive force of the coating is enhanced through plasma surface treatment, and activity retention and uniform distribution of functional components are guaranteed through the segmented curing strategy of the nano ceramic coating; compared with a traditional hot-pressing compounding or solvent coating process of the composite film, the energy consumption and the solvent residue risk are greatly reduced, meanwhile, the production efficiency and the product consistency are improved, and large-scale application is provided for medicine packaging.

The invention relates to the technical field of film packaging, in particular to a PA-EVOH multi-layer co-extrusion film, a preparation method thereof and a composite film. The PA-EVOH multi-layer co-extrusion film comprises a first functional surface layer, a first secondary surface layer, a core layer, a second secondary surface layer and a second functional surface layer, the thickness of the core layer is 13%-40% of the total thickness of the film layer, the melting point of the adopted PA resin is 215-225 DEG C, the melting point of the EVOH resin is 164-183 DEG C, and the ethylene content is 32-44 mol%. The PA-EVOH multi-layer co-extrusion film and the composite film thereof have high barrier property and thermal stability, and good transparency and apparent quality, and can be used for pasteurization or poaching sterilization food packaging. The invention further provides a preparation method which is used for manufacturing the PA-EVOH multi-layer co-extrusion film, the film layer structure and the film layer thickness proportion are optimized, and better physical comprehensive performance and processing performance are achieved.

A packaged food product includes a food product in packaging formed from a polyethylene film laminate body having a main polyethylene (PE) film layer and an ethylene vinyl alcohol (EVOH) layer. The packaging is laser date coded, with the laser date coding being established in the EVOH layer. Of the overall packaging, the ethylene vinyl alcohol layer is quite thin, generally having a thickness which is no greater than 5% of a thickness of the food packaging. The entire food packaging is readily recyclable, particularly by being at least essentially void of any polypropylene polymers and polyethylene terephthalate. The EVOH layer can be the outermost layer of the packaging, such as with the packaging being limited to just the PE and EVOH layers, or the packaging can include one or more other layers, such as cold seal, tie and / or ink layers.

A cushioning sheet includes a first layer defining a first inner surface; a second layer coupled to the first layer, the second layer defining a second inner surface facing the first inner surface; and a plurality of cushioning inserts disposed between the first layer and the second layer, wherein the first inner surface of the first layer contacts the plurality of cushioning inserts and the second inner surface of the second layer contacts the plurality of cushioning inserts.

The invention relates to the technical field of blocking medicine bottles, and particularly discloses a blocking medicine bottle and a preparation method thereof, aiming at the problems that the upper limit of the blocking performance of the existing blocking medicine bottle is low and the blocking performance is difficult to break through due to the fact that the blocking performance of the existing blocking medicine bottle is mostly realized through structural design. A bottle body of the blocking medicine bottle comprises an inner layer, a secondary inner layer, a middle layer, a secondary outer layer and an outer layer which are sequentially arranged in a covering mode. The inner layer comprises polyethylene; the secondary inner layer comprises an ethylene-methyl acrylate copolymer; the middle layer comprises an ethylene-vinyl alcohol copolymer, cyclic polyolefin and modified montmorillonite; the secondary outer layer comprises an ethylene-methyl acrylate copolymer; the outer layer comprises polyethylene, cyclic polyolefin and modified montmorillonite. The barrier medicine bottle is formed by compositing five layers of materials, the oxygen and water transmittance is low, the barrier property is high, and the barrier medicine bottle has great application value in packaging of medicine or food and the like.

The invention belongs to the technical field of iodine-resistant material preparation, and particularly discloses a high-barrier composite packaging material and a preparation method thereof.The high-barrier composite packaging material is composed of an aluminum foil layer, a vinyl resin heat-seal coating, a composite coating, a VC glue coating, a polyurethane heat-seal coating and a polyvinyl chloride sheet from top to bottom; wherein the composite coating is obtained by coating a coating liquid, and a preparation method of the coating liquid comprises the following steps: (1) adding PVA resin into deionized water, stirring, then adding a first part of functional particles, and heating and stirring to obtain a solution I for later use; (2) adding polylactic acid into the mixed solution, stirring, then adding the second part of functional particles, and heating and stirring to obtain a solution II; and (3) adding the obtained solution I into the obtained solution II, and uniformly stirring. The iodine-resistant packaging material prepared by the invention is good in iodine resistance, oxygen resistance and water vapor resistance, good in tensile strength and excellent in comprehensive performance.

The invention relates to the field of high polymer materials, and particularly discloses a high-transparency low-strength easy-to-tear film and a preparation method thereof. A high-transparency low-strength easy-to-tear film comprises an inner layer, a middle layer and an outer layer, and the inner layer is prepared from 38-50 parts of LDPE, 50-70 parts of I-type LLDPE, 1.5-2.5 parts of an anti-blocking agent, 2-2.8 parts of a slipping agent, 0.3-0.5 part of an antioxidant and 0.3-0.5 part of a PPA auxiliary agent; the middle layer is prepared from the following raw materials in parts by weight: 25 to 35 parts of No.1 LDPE (Low-Density Polyethylene), 25 to 35 parts of I-1 LLDPE (Linear Low-Density Polyethylene), 8 to 12 parts of HDPE (High-Density Polyethylene), 15 to 25 parts of butylbenzene block copolymer, 0.6 to 1 part of plasticizer, 0.2 to 0.4 part of antioxidant and 8 to 12 parts of filling master batch; and the outer layer is prepared from the following raw materials in parts by weight: 25-35 parts of No.1 LDPE, 60-80 parts of II-type LLDPE, an antioxidant and a plasticizer. The easy-to-tear film has the advantages of being easy to tear in the longitudinal and transverse directions, high in transparency and low in haze.

The present invention relates to a packaging unit (2) for a moulded pulp material and a manufacturing process therefore. The packaging unit according to the invention comprises a product receiving or carrying compartment having a product contact surface, wherein the product contact surface comprises a peelable laminate layer (10). In a presently preferred embodiment the moulded pulp material comprises an amount of a bio-degradable aliphatic polyester.

The invention discloses a high-temperature-resistant thin film material for an infusion bag and a preparation method of the high-temperature-resistant thin film material, and belongs to the technical field of medical packaging materials. The film comprises a five-layer structure, wherein a heat sealing layer is formed by mixed resin consisting of co-polypropylene and a polyolefin thermoplastic elastomer; the first bonding layer and the second bonding layer are made of bonding resin; the barrier layer is made of ethylene-vinyl alcohol copolymer resin; and the high-temperature-resistant structure protection layer is formed by mixed resin consisting of co-polypropylene, cycloolefin copolymer, styrene-ethylene / butylene segmented copolymer and an anti-reflection agent. The membrane material disclosed by the invention can bear high-temperature sterilization of 135 DEG C, and meets the sterilization requirements in special medical scenes and high-risk environments, so that the adaptability of the membrane for the infusion bag is improved; in addition, the membrane material also has excellent barrier property, can better protect the liquid medicine in the long-term infusion process, reduces the probability of qualitative change of the liquid medicine, and improves the medication safety.

The invention relates to the technical field of high-barrier environment-friendly packaging films, and discloses a high-barrier environment-friendly packaging film with an antibacterial function, the high-barrier environment-friendly packaging film comprises a base layer, a nano composite barrier layer, a bio-based functional layer and an outer protective layer from bottom to top in sequence, and the layers are tightly attached through a coated starch-based adhesive. According to the high-barrier environment-friendly packaging film with the antibacterial function, good biodegradability of polyhydroxyalkanoate adopted in the base layer film, polycaprolactone which is adopted in the nano-composite barrier layer film and has a biodegradable function and konjac glucomannan in the biological functional layer film are utilized; the composite packaging film can be decomposed into carbon dioxide and water by microorganisms in various environments, has excellent flexibility and processability, can adapt to different packaging requirements, provides basic flexibility, structural support and green and environment-friendly effects for the whole packaging film, and has a wide application prospect. The procyanidine arranged in the outer protective layer film provides stronger antibacterial property and water solubility for the whole packaging film.

A coextruded multi-layer compostable film comprises a core layer, a first cap layer and a second cap layer. The core layer comprises PLA resin, PHA resin and modifier X. The modifier X comprises migratory additives such as slip agents, nucleating agent, plasticizers, hydrolytic promoters, enzymes and fillers or mixtures thereof. The cap layers comprise at least 60 wt % TUV-certified home compostable composition. The content of migratory components in the cap layers is less than 0.5 wt % of the total weight of the cap layer, more preferably, less than 0.1 wt % of the total weight of the cap layer, more preferably, no migratory additives in the cap layers. The first cap layer has direct contact to the surface of the first chilled drum and the second cap layer has direct contact to the surface of the second chilled drum. In casting of a film, plate-out does not form on the surface of the chilled drums. The cap layers effectively prevent forming plate-out on the surface of processing equipment.

A cushioning sheet includes a first layer defining a first inner surface; a second layer coupled to the first layer, the second layer defining a second inner surface facing the first inner surface so that the first inner surface and the second inner surface define a plurality of voids therebetween; and a plurality of cushioning inserts disposed between the first layer and the second layer, wherein each of the plurality of cushioning inserts is received in a corresponding one of the voids, and each void has a diameter that is larger than a diameter of the cushioning insert disposed therein so that each void is configured to loosely receive the cushioning insert disposed therein.

The invention discloses a high barrier antibacterial flexible packaging material and a preparation method thereof, belonging to the technical field of flexible packaging composite materials. The flexible packaging material is composed of an outer layer, a barrier antibacterial layer and an inner heat-sealing layer from the outside to the inside; wherein the raw materials of the barrier antibacterial layer include 85 to 95 parts by weight of EVOH resin and 5 to 15 parts of an antibacterial modifier; the antibacterial modifier is an amine organic molecular cage composite nanosilver. The EVOH resin provides good barrier properties for the material, and the nanosilver in the amine organic molecular cage composite nanosilver can slowly release silver ions, giving the flexible packaging material certain antibacterial properties, and the composite of the amine organic molecular cage can improve the dispersibility of the nanosilver in the matrix resin on the one hand, and help improve the water absorption of the material on the other hand, reduce the influence of moisture on the EVOH resin, and effectively solve the problem of decreased barrier properties of the EVOH resin in a humid environment and increased probability of microbial contamination.

The present invention relates to a multilayer sheet liner for a food or beverage packaging material, the multilayer sheet liner comprising: a first ply comprising at least 70% by weight of unbleached kraft pulp and less than 30% by weight of neutral sulfite semi-chemical (NSSC) pulp, based on dry weight, and a second ply comprising at least 70% by weight of unbleached kraft pulp and less than 30% by weight of neutral sulfite semi-chemical (NSSC) pulp, based on dry weight, wherein the second ply comprises at least 50% by weight of NSSC pulp and less than 50% by weight of unbleached kraft pulp based on dry weight, and wherein the NSSC pulp in the second ply is a washed NSSC pulp having an ash content of less than 1.8% by weight as determined according to Standard ISO 1762: 2019. The invention relates to a method for manufacturing the multilayer sheet liner.

A laminated polypropylene-based film suitable for retort packaging having an exterior film, a barrier layer, and a sealing layer. The retort packaging film has a total composition including high levels of polyolefin-based polymers and polypropylene-based polymers such that the material can be processed efficiently in a polypropylene recycling process. Advantageously, the film retains the properties required to suitably withstand the retort process and produce a high-quality shelf-stable packaged product.

The invention relates to the technical field of aluminum plastic films, and particularly discloses a novel hot-process aluminum plastic film and a preparation method thereof. The novel hot-process aluminum plastic film comprises an outer layer, a middle layer, an inner layer, a bonding layer and an aluminum foil layer which are arranged in sequence, the raw materials of the inner layer comprise matrix resin and acrylic resin; the raw materials of the bonding layer comprise a curing agent and a passivating agent. The invention relates to a preparation method of a novel hot-process aluminum-plastic film, which comprises the following steps: adding acrylic resin master batch into matrix resin master batch, uniformly mixing to obtain an inner-layer raw material, and preparing a composite film with a heat-sealing layer doped with acrylic resin in a three-layer co-extrusion manner, the method comprises the following steps: uniformly stirring and mixing a curing agent and a passivating agent to obtain a treating agent, then selecting an aluminum foil as an aluminum foil layer, coating the treating agent on two surfaces of the aluminum foil layer in a micro-concave coating manner, and finally drying and depositing at 180-230 DEG C to obtain a treated aluminum foil layer; and performing hot-process compounding on the treated aluminum foil layer and the inner layer of the composite film to obtain the novel hot-process aluminum-plastic film.

Provided is a sealant film for laminates that has excellent heat resistance, low-temperature sealing properties and impact resistance. [Solution] A sealant film for laminates to be used with a polypropylene content of 80% by mass or more, the sealant film for laminates comprising at least a first layer located on one surface of the laminate and a second layer in contact with the first layer, the first layer comprising a first matrix resin component and a first dispersed component at 51% by mass or more and 90% by mass or less, and having a sea-island structure with the first dispersed component dispersed in the first matrix resin component, the second layer comprising a second matrix resin component and a second dispersed component at 51% by mass or more and 85% by mass or less, and having a sea-island structure with the second dispersed component dispersed in the second matrix resin component, the first matrix resin component comprising a propylene-ethylene random copolymer, the first dispersed component comprising 5% by mass or more of polyethylene, the second matrix resin component comprising a block polypropylene, and the second dispersed component comprising 5% by mass or more of polyethylene.

The present invention is directed to a capsule (1) for beverage preparation, comprising a cup-shaped body (2) of moulded cellulose pulp and a closing membrane (5) attached to a peripheral rim (4) of said body (2). The capsule further comprises a multilayer polymeric liner (3) attached to the inner surface of the cellulose pulp body (2), said liner comprising: (i) an outermost polymeric layer (7), (ii) a first tie layer (8), (iii) a barrier layer (9), (iv) a second tie layer (10), (v) an innermost polymeric layer (11), In which liner, - the thickness of the outermost layer (7) and the thickness of the innermost layer (11) are comprised between 10 and 100 pm and are preferably identical; - the elongation at break of the outermost layer (7) is higher than the elongation at break of the innermost layer (11); - The melt flow rate (MFR) of the outermost layer (7) measured at 150°C during 10 minutes with a pressure of 2.16 kg, is lower than the melt flow rate (MFR) of the innermost layer (11), measured at 190°C during 10 minutes with a pressure of 2.16 kg; - The melting point temperature of the outermost layer (7) is lower than the melting point temperature of the innermost layer (11), and in which, the outermost layer serves as an adhesive to the cellulose pulp of the capsule body.

Disclosed is a composite sheet for package comprising an outer layer, an intermediate layer, and an inner layer sequentially stacked in a first direction, wherein the inner layer comprises a first LDPE with a melt flow index of 3.5-7.5 g / 10 min (190°C, 2.16 kg). Further disclosed a method for producing a composite sheet for package, a sleeve, and a package container.

A flexible package having an inner sheet having a first surface and a second surface. The flexible package has an article reservoir for accepting an article to be shipped and one or more expansion chambers. The expansion chambers can be inflated or otherwise expanded to provide structure to the flexible package and to protect the article in the article reservoir.

A gas barrier film including a base layer containing a polypropylene resin, a vapor deposition layer containing an inorganic oxide, and a gas barrier coating layer in that order, wherein the base layer includes a first skin layer and a core layer, and the vapor deposition layer is formed on the side of the first skin layer, and wherein the hardness of the first skin layer measured by a nano-indentation method is 0.02 to 0.15 GPa, the hardness of the core layer is 0.07 GPa or more, and the hardness of the core layer is larger than the hardness of the first skin layer.

Provided is a multi-layer film comprising a seal layer (A) and a resin layer (B) that is adjacent to the seal layer (A), wherein the seal layer (A) contains a polyester-based resin (a) and an anti-fogging agent, and the resin layer (B) contains an acid-modified polyolefin and a polyester-based resin (b). Also provided are a laminate, a packaging material, and a food packaging container. It is preferable that the seal layer contains a polyester-based resin (a1) and a polyester-based resin (a2) as the polyester-based resin, the glass transition temperature of the polyester-based resin (a1) is 60-140°C, and the glass transition temperature of the polyester-based resin (a2) is not higher than 45°C.

The present disclosure relates to a biodegradable multilayer film comprising stacked on each other in the following order: a) a first outer layer comprising a first polymer selected from the group consisting of poly (butylene adipate-co-terephthalate) (PBAT), poly (butylene succinate) (PBS), poly (butylene succinate-co-adipate) (PBSA), and mixtures thereof; b) a core layer comprising a blend of thermoplastic starch (TPS) and polybutylene adipate terephthalate (PBAT); c) a second outer layer comprising a second polymer selected from the group consisting of poly (butylene adipate-co-terephthalate) (PBAT), poly (butylene succinate) (PBS), poly (butylene succinate-co-adipate) (PBSA), and mixtures thereof. The present disclosure also relates to a disposable bag, a bioreactor and a container suitable for mixing, packaging, storing or transporting biopharmaceutical substances, wherein the disposable bag, bioreactor and container comprise the biodegradable multilayer film.

The disclosure provides a process to produce a multilayered hollow article comprising two or three layers wherein the article comprises at least 30 wt.% of recycled polyethylene resin wherein the process comprises a preliminary step of preparing one or more recycled- containing polyethylene compositions to be used as the first, second and optional third layer.

Provided are a laminate material, an article comprising the laminate material and a method for preparing the laminate material. The laminate material, comprises a first substrate comprising at least one metalized PE-based film, a second substrate comprising at least one PE-based film, and an adhesive layer adhering the first substrate to the second substrate, wherein the adhesive layer is derived from a two-component solvent-based polyurethane adhesive composition, and wherein the concentration of fatty acids or fatty acid derivatives in the metalized PE-based film is less than 300 ppm, based on the total weight of the metalized PE-based film. The two-component solvent-based polyurethane adhesive composition comprises a polyester polyol component and a polyisocyanate component, wherein the polyol component has 40 wt %-60 wt % of aromatic rings in the backbone, based on the total weight of the polyester polyol and a Mw between 5.000 and 50.000, and wherein the weight ratio of the polyester polyol component to polyisocyanate component is from 100:5 to 100:30.

The present invention relates to a lid film for airtight sealing of beverage capsules, in particular coffee capsules, comprising excellent barrier properties against gas ingress, water or humidity and oxygen: i.) at least one layer of paper, ii.) at least one layer containing polylactic acid, iii.) at least one layer of metallization, iv.) at least one sealing layer containing at least one thermoplastic polymer made from glucose, lignin or cellulose.

The invention discloses a paper-based composite film, which adopts a four-layer structural design, and the outer layer is an ultraviolet shielding layer formed by coating TiO2 with lignin; the transition layer is composed of 32-64 PLA / PBAT alternating microlayers, and the multiple alternating transition layers form a zigzag gas barrier path; ag-coated ZIF-8 nanoparticles are loaded on the paper base layer, so that long-acting antibiosis is realized by slowly releasing silver ions; and the inner layer adopts a PPC / PBS blend to support the heat sealing layer with adjustable heat sealing strength. According to the preparation process, a gradient micro-layer structure is constructed through a multi-runner co-extrusion die head and a layer multiplier, silver ions are loaded to ZIF-8 through an ultrasonic-vacuum impregnation process, the hydroxyl density of the surface of the paper base layer is improved through plasma treatment, good interlayer strength is achieved, ester bond crosslinking is induced in a pre-irradiation mode, and the product is prepared. The paper-based composite film has ultraviolet shielding, gradient blocking, slow-release antibacterial and controllable heat sealing performance, the interface bonding strength of a traditional paper-based composite film is greatly improved, all components are biodegradable, and the paper-based composite film is suitable for packaging of food, medicine and the like.

An object of the invention is to provide a resin laminate for packaging material containing a base layer and a sealant layer each of which contains the same material with high processability. The resin laminate for packaging material contains at least a base layer and a sealant layer, wherein each of resin compositions for the base layer and the sealant layer contains the same resin (A) as a main component, the base layer has a fusion initiation temperature (FIT-B), and the sealant layer has a seal strength reaching temperature (SRT-S), wherein the temperatures satisfy the following inequalities of from (1) to (3):50° C.≤(FIT-B)−(SRT-S)≤90° C.  Inequality (1)90° C.≤(SRT-S)≤120° C.  Inequality (2)160° C.≤(FIT-B)≤180° C.  Inequality (3).

Provided is a sealant film for a laminate excellent in heat resistance, low-temperature sealability and impact resistance, the sealant film used for a laminate having a polypropylene content of 80 mass% or more and comprising at least a first layer positioned on one surface of the laminate and a second layer in contact with the first layer. The first layer contains 51 mass%-90 mass% inclusive of a first matrix resin component and a first dispersion component, and has a sea-island structure in which the first dispersion component is dispersed in the first matrix resin component, the second layer contains 51 mass%-85 mass% inclusive of a second matrix resin component and a second dispersion component, and has a sea-island structure in which the second dispersion component is dispersed in the second matrix resin component, the first matrix resin component comprises a propylene-ethylene random copolymer, the first dispersion component contains 5 mass% or more of polyethylene, the second matrix resin component comprises a block polypropylene, and the second dispersion component contains 5 mass% or more of polyethylene.

A multilayer coated laminate (1) comprising a substrate (2) with a first side (2a) and a second side (2b). The laminate further comprises a co-extrusion coated tie 5 layer (3) which is coated on first side (2a) of the substrate, wherein the tie layer comprising PVAc and / or PBSA, which tie layer has a thickness of 1-10 µm, preferably 2-7 µm; and a PHA layer (4), preferably PHBH, which is co-extrusion coated on the tie layer, the PHA 10 layer has a thickness of 5-25 µm, preferably 10-15 µm.