453 results about "Gas barrier" patented technology

The invention discloses a PHA-acrylic acid structural unit water-based dispersion based on interface engineering regulation and control, a preparation method thereof and application of a paper-based barrier coating, and belongs to the technical field of high polymer materials, interface engineering and water-based coatings. The stable interface layer is constructed in situ between the crystalline PHA and the acrylic resin through the amphiphilic polymer, so that the problems of poor compatibility and film forming defects of a bio-based material are effectively solved. The dispersion can realize excellent waterproof, oil-proof and gas barrier effects by only needing a relatively low coating weight, and the material consumption is remarkably reduced. The unique gradient structure of the coating has excellent mechanical adhesive force and efficient re-pulping and recycling characteristics, and the technical defect that a traditional barrier coating is difficult to recycle is overcome. And an ideal solution with high performance and high safety is provided for green packaging.

This invention discloses a one-piece molded all-plastic flexible hose sheet and its composite hose, belonging to the field of polymer material technology. The one-piece molded all-plastic flexible hose sheet of this invention has a three-layer structure: an outer PE film, an intermediate layer, and an inner PE film. The intermediate layer is selected from one of the following: an intermediate polymer layer, a three-layer composite layer formed by an intermediate polymer layer, a polyethylene layer, and an intermediate polymer layer, or a three-layer composite layer formed by an intermediate polymer layer, an ethylene-vinyl alcohol copolymer layer, and an intermediate polymer layer; the intermediate layer may have a double-sided coated or uncoated adhesive layer; the intermediate polymer layer is polymerized from 2,6-dihydroxyisophthalic acid, diaminoalkane, and 4,4'-tetraphenylsilane. The all-plastic flexible hose sheet provided by this invention is formed in one piece using a five-layer co-extrusion machine, possessing excellent gas barrier properties, water vapor barrier properties, high mechanical strength, and good interlayer peel strength.

The invention discloses a flexible packaging material and a preparation method and application thereof. The flexible packaging material comprises a sandwich structure formed by sequentially stacking a polymer elastomer with a viscoplastic surface layer, a self-adaptive gas barrier layer and a polymer elastomer with a viscoplastic surface layer, wherein the viscoplastic surface layer of the polymer elastomer consists of a non-polar viscoelastic molecular network and a plastic polar polymer microdomain; the self-adaptive gas barrier layer is at least one of liquid metal, hygroscopic gel and viscous hygroscopic liquid; and the viscoplastic surface layers of the upper and lower polymer elastomers are respectively contacted with two surfaces of the self-adaptive gas barrier layer, so that a sandwich structure is formed. The flexible packaging material not only can be flexibly stretched, but also has ultrahigh gas barrier property, and has important significance and value for promoting the practical application and industrialization process of flexible electronic devices.

A resin composition containing a hydrophilic resin and a metal compound, and satisfies the following expression (1) when being formed into a film:α1−β1≥1  (1)wherein α1 is an average metal atom concentration (%) in a portion of the film in a depth range of 0 to 9 nm from a film surface, and β1 is an average metal atom concentration (%) in a portion of the film in a depth range of 12 to 21 nm from the film surface. The resin composition is excellent in gas barrier property, particularly in oxygen barrier property, in a high humidity environment.

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

Provided are: a gas barrier film that includes a vapor deposition layer (B) that includes at least one metal element selected from among zinc, magnesium, and calcium and a compound that has a carbonyl group on a plastic film; and a packaging body that includes the gas barrier film. The peak ratio (A1575 / A1687) of the absorption peak height A1687 at a wavenumber of 1687 cm-1 to the absorption peak height A1575 at a wavenumber of 1575 m-1 on an infrared absorption spectrum for the vapor deposition layer (B) is preferably 0.1–5.0.

The invention discloses an automatic cleaning system for industrial television coking materials of a substrate glass kiln, and belongs to the technical field of coking material cleaning. The device comprises a high-temperature-resistant extension protective sleeve, a multi-layer annular space gas barrier module, a central vortex gas cleaning module, a self-sealing pneumatic valve, a clean gas supply system and an intelligent control system. The gas barrier module is integrated on the inner wall of the protective sleeve and can form laminar flow and oblique composite gas flow on the surface of the optical window to actively isolate pollutants; the vortex cleaning module is coaxially arranged in front of the window, and high-speed rotating airflow is generated through a plurality of tangential nozzles to clean coking materials; the self-sealing valve seals the window in a non-cleaning state; the intelligent control system automatically controls the cleaning process according to temperature and image signals. According to the invention, continuous protection, automatic cleaning and intelligent regulation and control of the industrial television window are realized, and the reliability and safety of kiln monitoring are obviously improved.

The invention discloses a fire extinguishing microcapsule with an EVA ultraviolet crosslinking barrier material as a wall material and a preparation process of the fire extinguishing microcapsule. According to the fire extinguishing microcapsule with the EVA ultraviolet crosslinking barrier material as the wall material, the whole fire extinguishing microcapsule is spherical or sphere-like, a composite material of EVA and graphene is used as the wall material, a core material is wrapped in the wall material, the thickness of the wall material is 10-50 microns, and the diameter of the fire extinguishing microcapsule is 300-500 microns. The excellent gas barrier property of the EVA and graphene composite wall material is utilized, volatilization of perfluorohexanone is effectively blocked, the storage stability of the fire extinguishing microcapsule is improved, the service life of the fire extinguishing microcapsule is prolonged, and the effective content of a fire extinguishing agent during fire extinguishing is guaranteed.

To provide a packaging film, a packaging bag, and a packaged product capable of having excellent gas barrier properties while suppressing a decrease in the ratio of polyolefin-based resin in the entire packaging film.SOLUTION: A packaging film includes a gas barrier film, an adhesive layer, and a sealant layer in this order. The gas barrier film includes a base material layer, an anchor coat layer, and a vapor deposition layer in this order. The base material layer includes a polyolefin-based base material layer containing a polyolefin-based resin. The anchor coat layer contains a polyurethane resin and has a thickness of 0.02 μm or more. The adhesive layer is obtained by bonding an adhesive resin composition containing a polyolefin-based adhesive resin to the gas barrier film by melt extrusion. The sealant layer contains a polyolefin-based resin.SELECTED DRAWING: Figure 1

The invention concerns a preform (10) for forming a bottle for gaseous beverage, the preform comprising a multilayered wall obtained by injection in a mould from an injecting point (22) located at a central bottom end of the preform, the multilayered wall including an inner layer (24), an outer layer (26) and a gasbarrier layer (28) sandwiched between the inner and outer layer. The gas barrier layer (26) advantageously extends along the entire preform multilayered wall except for a bottom ending portion (30), this bottom ending portion free of barrier layer (30) being a central part of a base-forming portion (20) delimited by a solid angle (α) comprised between 5° to 80°, the apex (C) of this solid angle being the centre of a semi-spherical lower segment of the base-forming portion (20). A bottle obtained by blow-moulding such a preform has a bottom ending portion free of barrier layer within a solid angle comprised between 5° and 50°.

To provide a laminate that is highly recyclable and has excellent heat-sealing properties. [Solution] A laminate comprising at least a base layer, an adhesive layer, and a sealant layer in this order, wherein a protective layer is provided on the outermost side of the base layer, the protective layer is made of a thermosetting resin, both the base layer and the sealant layer are made of polyethylene resin, the base layer has a probe drop temperature of 180°C or higher, the proportion of polyethylene in the laminate is 90% by mass or higher, and the adhesive layer is formed from a polyamine-based adhesive or a urethane-based adhesive having gas barrier properties.

The present invention provides a barrier paper that can suppress the decrease in barrier properties when folded, and also has good heat seal strength, suitability for bag making, and blocking suppression properties. [Solution] A barrier paper according to one aspect of the present invention comprises a base material, a gas barrier layer laminated on one or both sides of the base material, and a water vapor barrier layer laminated on the surface of the gas barrier layer, wherein the gas barrier layer mainly consists of polyvinyl alcohol, the water vapor barrier layer contains a wax resin and a styrene-acrylic copolymer as its main component, the amount of wax resin in the water vapor barrier layer is 3 parts by mass or more and 11 parts by mass or less per 100 parts by mass of styrene-acrylic copolymer, the gas barrier layer contains an inorganic compound in an amount of 15 parts by mass or less per 100 parts by mass of polyvinyl alcohol, or does not contain an inorganic compound, and the water vapor barrier layer does not contain an inorganic compound.

A cover structure assembly (140) for a unit housing (110) of an energy storage unit (100) is described. In the mounted state, the cover assembly (140) is provided for enabling filling of the cell housing (110) with an electrolyte (190). In this case, the cover assembly (140) has an end plate (120), which has a fastening assembly (200), which has an opening region (220). A first gas barrier (240) is provided for closing the opening region (220) in a gas-tight manner before filling the cell housing (110) and for being penetrated by a filling element for filling the cell housing (110), such that an opening (221) is formed in the first gas barrier (240), through which an electrolyte (190) can be filled into the cell housing (110). Furthermore, a second gas barrier (250) is provided for closing the opening (221) in a gas-tight manner after filling the unit housing (110).

The application discloses a composite diaphragm with hierarchical pore structure for alkaline water electrolysis and a preparation method thereof. The preparation method comprises the following steps: (1) mixing a high molecular resin, inorganic nano-hydrophilic particles, nano-scale mesoporous pore-forming agents and an organic solvent to obtain a casting solution slurry; (2) immersing a three-dimensional porous sacrificial template into the casting solution slurry to obtain an impregnated precursor; (3) placing the impregnated precursor into a coagulation bath to perform phase inversion treatment, so that the polymer is solidified and formed to obtain a composite membrane; (4) immersing the composite membrane into an acidic dissolution solution to dissolve the three-dimensional porous sacrificial template and the nano-scale mesoporous pore-forming agents; and (5) cleaning and drying the diaphragm to obtain the diaphragm. By introducing a double-template synergistic pore-forming technology, the hierarchical porous structure combining the "micron-level through transmission channels" and "nano-scale functional mesopores" is constructed in the diaphragm, so that the surface resistance of the diaphragm can be significantly reduced while the excellent gas barrier performance is ensured, and the ion conductivity is improved.

Provided is a packaging bag in which the difficulty of tearing caused by temperature rising is resolved. The easy to open packaging bag for sealing a laminated film by heat sealing, wherein the laminated film includes an inner layer film, an intermediate layer film having an opening induction flaw formed thereon, and an outer layer film including a biaxially oriented film, and wherein a molecular orientation angle of the outer layer film is less than 49°. Also provided are a laminated film and a pouch having easy to open properties while maintaining excellent barrier properties. The laminated film is obtained by laminating (a) an outer layer film, (b) a barrier layer having an opening induction flaw, and (c) an inner layer film, and has a barrier ink covering the opening induction flaw in the barrier layer.

To provide a laminate which has sufficient reliability and film formation property during heat sealing, while containing a recycled material containing two or more kinds of resins, and is also excellent in gas barrier property, a packaging material and a packaging bag.SOLUTION: A laminate 10a includes a sealant film 1a having a recycled material-containing layer 2 containing a recycled material containing two or more kinds of resins, and a sealant layer 3 laminated on one main surface of the recycled material-containing layer 2, and a gas barrier layer 12 provided on a side opposite to the sealant layer 3 side of the sealant film 1a, wherein arithmetic surface roughness of a surface S3a on a side opposite to the recycled material-containing layer 2 side of the sealant layer 3 is 0.5 μm or more and 5 μm or less.SELECTED DRAWING: Figure 1

To provide a gas barrier laminate capable of withstanding a treatment under a high-temperature and high-humidity or high-temperature and high-pressure environment such as a retort treatment and a boil treatment, excellent in a maltreatment resistance capable of maintaining high-level gas barrier properties even if a maltreatment such as bending is applied thereafter, and also to provide a coating liquid for manufacturing thereof, a packaging material, a package and a packaged article.SOLUTION: A coating liquid for manufacturing a gas barrier laminate includes: a carboxyl group-containing polymer (a), a polyvalent metal-containing particle (b), a surfactant (c), a specific silicon-containing compound (d) and an organic solvent (e). In the coating liquid, an equivalence ratio of the polyvalent metal-containing particle (b) to the carboxyl group-containing polymer (a) is 0.45 to 0.9. A molar ratio of the specific silicon-containing compound (d) to the carboxyl group-containing polymer (a) is 0.7% to 7.5%.SELECTED DRAWING: Figure 1

The application provides a graphene oxide modified polypropylene composite material and a preparation method thereof. The first aspect of the application provides a graphene oxide modified polypropylene composite material, which is prepared from polypropylene resin and graphene oxide as raw materials. The application can make the graphene oxide fully dispersed in the polypropylene resin, effectively improve the dispersibility and interfacial compatibility of the graphene oxide in the polypropylene resin, and improve the gas barrier property of the polypropylene resin on the basis of ensuring the original performance of the polypropylene resin.

To provide a laminate that enables production of a packaging bag which has sufficient strength and heat resistance and is excellent in recyclability and gas barrier property.SOLUTION: A laminate includes a base material and a sealant layer, in which the base material and the sealant layer are composed of the same material, the base material is subjected to at least one of stretching treatment and electron beam irradiation treatment, the same material is polyethylene or polypropylene, and a barrier coat layer is provided between the base material and the sealant layer.SELECTED DRAWING: Figure 1

The present invention includes sequentially laminated substrate layers, a gas barrier layer, and a sealant layer, wherein the sealant layer is represented by the following [Formula 1] f T The present invention relates to a pouch film laminate in which the value of is 0.32 to 3.1, and the surface roughness (Ra) of the sealant layer is 0.11 μm to 0.75 μm. [Equation 1]f T =f T2 / f T1 In the above [Equation 1], f T1 This is the coefficient of friction of the sealant layer at T1, and f T2 is the coefficient of friction of the sealant layer at T2, where T1 and T2 are different temperatures.

This gas barrier layered body comprises a base material layer containing a polyolefin-based resin, a layer containing a metal oxide, and an overcoat layer containing a polyvinyl alcohol-based resin, wherein the surface of the overcoat layer has a softening temperature of 100 to 170°C as measured by local modulated thermal analysis.

The present invention provides a double container capable of suppressing the deterioration of the gas barrier property under high humidity environment. According to the present invention, provided is a double container comprising a container body, wherein the container body has an outer shell and the inner bag, the container body is configured such that the inner bag contracts as content is reduced, and the inner bag comprises an inner layer, a gas barrier layer, and an outer layer, in order from an inside of the container body.

A packaging film includes a gas barrier film, an adhesive layer, and a sealant layer in this order. The gas barrier film includes a substrate layer, an anchor coat layer, and a vapor deposition layer in this order, the substrate layer includes a polyolefin substrate layer containing a polyolefin-based resin, the anchor coat layer contains a polyurethane resin, and the anchor coat layer has a thickness of 0.02 μm or more. The adhesive layer is obtained by bonding an adhesive resin composition containing a polyolefin adhesive resin to the gas barrier film by melt extrusion, and the sealant layer contains a polyolefin-based resin.

The invention discloses a repulping water-based bio-based high-barrier coating composition, a coating product as well as a preparation method and application of the coating product, and belongs to the technical field of green packaging materials. The composition is composed of a functional core-shell structure acrylic polymer, polyhydroxyalkanoate particles, an in-situ modified mineral and an intelligent cross-linking system. According to the invention, an organic and inorganic dual interpenetrating network sensitive to pH is innovatively constructed, so that the coating has excellent water resistance, oil resistance and gas barrier property in a use environment, and network swelling and dissociation can be rapidly generated under an alkaline recovery condition. Compared with a traditional technology depending on high mineral filling, according to the scheme, a better barrier effect can be achieved under the low filling amount by utilizing the synergistic enhancement effect of the trace intelligent cross-linking agent and the bio-based particles, meanwhile, the paper is endowed with high fiber recovery yield and excellent industrial and household compost degradation performance, and fluoride addition is completely avoided; the problem that the barrier property, the repulping property and the full biodegradability of paper-based packaging cannot be considered at the same time is effectively solved.

The present application relates to the technical field of high polymer composite material, and particularly discloses a liquid nitrogen resistant ultra-low temperature thermoplastic composite film and a preparation method thereof. The film is prepared from the following raw materials: 50-70 parts of thermoplastic polyurethane elastomer, 15-30 parts of polycaprolactone, 2-12 parts of composite reinforcing filler, 2-5 parts of compatibilizer, 1-3 parts of ultra-low temperature toughening agent, and 0.5-1 part of antioxidant. The composite reinforcing filler comprises nanocellulose crystals. The present application also discloses a preparation method of the composite film, which comprises the steps of drying the raw materials, premixing, melt blending and extruding, casting film forming, and annealing treatment. The film has the following advantages: 1) through the optimization design of the thermoplastic polyurethane elastomer, PCL and the composite reinforcing filler, the composite film has excellent flexibility and mechanical strength at the temperature of liquid nitrogen; 2) through the synergistic effect of the composite reinforcing filler, a new gas barrier mechanism is constructed, and the oxygen permeation rate is reduced by more than 80%; and 3) the preparation method is simple and suitable for industrialized mass production.

The utility model relates to an all-electric four-layer fresh-keeping bottle blowing machine which comprises a machine frame, blocking doors are arranged on the left side and the right side of the machine frame, a first working table is arranged on the right side of the bottom of the machine frame in a sliding mode through a lifting mechanism, a second working table is arranged on the top of the first working table, and a plurality of sizing material extruders are arranged on the top of the second working table. The top of the second workbench extends leftwards to be provided with a supporting frame, tuyere mechanisms are arranged on the front side and the rear side of the supporting frame, the left side of the supporting frame is connected with a glue pulling double-die head, and die moving swing arm sets are symmetrically arranged on the left side in the rack front and back. The bottle manufactured through blowing is of a four-layer structural design and comprises the bonding layer, the inner layer, the EVOH layer and the main layer, the gas barrier property and the ultraviolet resistance are enhanced, and the storage time of food is effectively prolonged; the lifting structure drives the first workbench and components arranged on the first workbench to move up and down to be adjusted so as to adapt to the melting temperature and fluidity of different plastic materials, the extrusion process is optimized, and then accurate control over compounding of multiple layers of materials is achieved.

To provide as a modified ethylene-vinyl alcohol copolymer achieving both forming processability and gas barrier properties under high humidity, the modified ethylene-vinyl alcohol copolymer having a content of an ethylene structural unit of from 20 to 60 mol %, and having a structural unit (1) described below:wherein in the structural unit (1), R1 is an alkyl group having from one to three carbons; and X is an alkylene group having from one to five carbons.

To provide a transparent gas barrier laminate which has good water vapor barrier properties and uses a resin substrate, and a method for manufacturing the gas barrier laminate.SOLUTION: The gas barrier laminate includes a resin substrate and a transparent oxide film layer containing tungsten (W) formed on one surface or both surfaces of the resin substrate and further includes an undercoat layer between the resin substrate and the transparent oxide film layer. The undercoat layer is a layer comprising a cured product of a composition containing an acrylic resin having an organic acid group. The composition further contains a polyisocyanate. The acrylic resin is an acrylic polyol resin. The gas barrier laminate has a water vapor permeability of 0.05 g / (m2 day) or less in measurement conditions of 40°C and 90% R.H.SELECTED DRAWING: Figure 1

Provided are: a gas barrier film which is capable of preventing the transmission of ultraviolet rays of 380 nm or less; and a photoelectric conversion device which is provided with the gas barrier film. According to one embodiment, there is provided a gas barrier film including a substrate and a first layer provided on at least one surface side of the substrate. The gas barrier film has a shielding property against ultraviolet light having a wavelength of 380 nm or less.