233results about How to "Low oxygen permeability" patented technology

An improved seal member is provided as a part of an electrochromic device to bond two glass elements together in a spaced-apart relationship. In one embodiment the seal member provides improved adhesion to a reflector / electrode on the third surface of an electrochromic mirror, or to a layer of metal on the second or third surface for an electrochromic light filter. This seal member comprises a mixture of an organic resin sealing system and an adhesion promoter, where the adhesion promotor comprises a first and a second region, where the first region interacts with the reflector / electrode or the metal layer, and a second region that interacts with the organic resin sealing system, and may even chemically react with the organic resin sealing system. In another embodiment the seal member is provided with a coefficient of thermal expansion that is closer to glass than a standard epoxy sealing system.

A meal kit for preparing at least two different distinct hot meals in which the meal kit comprises an outer container, a plurality of ingredients in individual containers placed within the outer container, and a set of instructions contained on or within the outer container describing at least two different ways of combining the plurality of ingredients to form at least two distinct hot meals, wherein different non-overlapping preparation times are associated respectively with the at least two different ways of combining the plurality of ingredients to make distinct hot meals. The meal kits provide savory, and conveniently and flexibly prepared, one-stop meal kits for consumers.

A room temperature stable cannabinoid formulation is disclosed. In preferred embodiments, the cannabinoid formulation is dronabinol in an oil-based carrier contained within a hard gelatin capsule.

An improved seal member is provided as a part of an electrochromic device to bond two glass elements together in a spaced-apart relationship. In one embodiment the seal member provides improved adhesion to a reflector / electrode on the third surface of an electrochromic mirror, or to a layer of metal on the second or third surface for an electrochromic light filter. This seal member comprises a mixture of an organic resin scaling system and an adhesion promoter, where the adhesion promotor comprises a first and a second region, where the first region interacts with the reflector / electrode or the metal layer, and a second region that interacts with the organic resin sealing system, and may even chemically react with the organic resin sealing system. In another embodiment the seal member is provided with a coefficient of thermal expansion that is closer to glass than a standard epoxy sealing system.

Retort liners and containers including a container body such as a bottle or jar, a closure, and the retort liner, wherein the retort liners exhibit attractive properties such as low compression set under retort conditions, desirable adhesion to a polymeric closure such as a cap or lid, and beneficial oxygen barrier properties. In particular, the retort liners are thermoplastic elastomers formed from compositions including one or more styrenic block copolymers, one or more polyolefins and a softener. In a preferred embodiment, the retortable containers are all plastic packages, wherein the bottle or jar and the closure are thermoplastic compositions and the liner is a thermoplastic elastomer composition.

The invention provides a high-barrier layer flexible packaging film for isolating contents of a polymer lithium battery. The high-barrier layer flexible packaging film comprises at least two kinds of films which are combined to form a layer of composite film, wherein the composite film comprises a basic layer, a functional layer and a heat sealing layer; the high-barrier layer flexible packaging film is characterized in that: the basic layer is a copolymer film prepared by combining at least two film base materials of PP (polypropylene), CPP (chlorinated polypropylene or casting polypropylene), PE (polyethylene), PET (poly(ethylene terephthalate)), PA (polyamide) or MXD6 (aromatic polyimide), MPE (elastomer blend), PVDC (polyvinyl dichloride), EVOH (ethylene-vinyl alcohol), PEN (polyethylene naphthalate) and GT, or by complexing pairwise; and a high-barrier water-tolerant modified PVA (poly vinyl alcohol) coating film is coated on the copolymer film base materials. The high-barrier layer flexible packaging film has excellent gas barrier property, remarkably low oxygen permeability, water resistance, corrosion resistance, good high temperature resistance and great barrier property, and resists organic solvents and highly-volatile substances. In the invention, the high-barrier PVA is preferably coated on various base materials to obtain a base layer serving as a high-barrier layer which has great barrier property and excellent performance in resisting gas, water, corrosion, ultraviolet rays and the like.

Oxygen barrier polymer compositions exhibiting high oxygen scavenging capability suitable for extended shelf-life, packaging applications. These polymer compositions comprise at least one ethylene vinyl alcohol copolymer, at least one oxidizable polydiene, and at least one metal salt catalyst. The polymer products are particularly suited to making barrier packaging articles such as monolayer or multi-layer films, sheets, tubes, pipes, thermoformed containers and coinjection / coextrusion blow molded bottles comprising PET, polyolefin or polycarbonate as structural layers. Such articles are useful in a variety of oxygen-sensitive food, beverage, pharmaceutical and health care product packaging applications.

The accuracy and / or precision of measurements of extracellular acidification rate or CO2 evolution in cell culture medium may be improved by using materials with low CO2 permeability for medium-containing vessels.

Coated articles may comprise one or more coating layers, including water resistant coatings. A method comprises applying such coating layers by dip, spray or flow coating. The methods can make coated containers, preferably comprising polyethylene terephthalate, from coated preforms. In some methods, the aqueous solutions, dispersions, or emulsions are substantially or completely free of VOCs.

The invention relates to an edible polysaccharide-protein composite packaging film and a preparation method thereof. Sodium alga acid, sodium carboxymethylcellulose and gelatin are taken as main film forming materials, and a water repellent agent, an antioxygen wheyprotein and a plasticizer glycerin are taken as auxiliary elements to prepare total mixed solution; and the total mixed solution is subjected to microwave crosslinking and coating film forming to prepare the edible polysaccharide-protein composite packaging film. The edible polysaccharide-protein composite packaging film overcomes the defect that a single film has insufficient mechanical properties; the wheyprotein replaces the commonly used antioxygen and nutrition is added; the film is dissolved in water and is conveniently used by customers, and waste pollution is reduced; and the added water repellent agent improves the steam resistance of the edible packaging film and improves the brightness of the film, so the film is more attractive.

The invention discloses a sodium alginate-chitosan double-layer edible membrane as well as a preparation method and an application thereof. The sodium alginate-chitosan double-layer edible membrane isprepared from a sodium alginate membrane and a chitosan membrane through cross-linking compounding. The sodium alginate-chitosan double-layer edible membrane is prepared from a safe and non-toxic material, wide in raw material source, low in production cost and good in membrane forming property, the eating security of an edible inner packaging membrane is improved, through synergetic promotion ofthe components, the air permeability of the membrane is remarkably degraded, the oxygen permeation rate of the membrane is remarkably reduced, the tension property and the transparency of the membrane are remarkably improved, and the membrane is easy to degrade; due to addition of a natural antibacterial agent, microorganism pollution can be very well prevented; the thickness of the membrane canbe controlled by changing the proportioning of the sodium alginate to the chitosan, and then the mechanical properties, the dissolution degree and the antibacterial agent release speed of the membraneare controlled; and the membrane is simple in preparation step, and by adopting the preservative membrane made from the membrane disclosed by the invention, moisture loss and microorganism pollutionin the transportation, storage and processing process of fruits and vegetables can be reduced.

Composite polymer films or layers have graphene-based nanosheets dispersed in the polymer for the reduction of gas permeability and light transmittance.

Oxygen barrier polymer compositions exhibiting high oxygen scavenging capability suitable for extended shelf-life, packaging applications. These polymer compositions comprise at least one ethylene vinyl alcohol copolymer, at least one oxidizable polydiene, and at least one metal salt catalyst. The polymer products are particularly suited to making barrier packaging articles such as monolayer or multi-layer films, sheets, tubes, pipes, thermoformed containers and coinjection / coextrusion blow molded bottles comprising PET, polyolefin or polycarbonate as structural layers. Such articles are useful in a variety of oxygen-sensitive food, beverage, pharmaceutical and health care product packaging applications.

Disclosed is an apparatus for producing DLC film-coated plastic containers, which comprises an outer electrode unit disposed outside a plastic container, an inner electrode disposed inside the plastic container, a duct through which a raw material gas of a carbon source is fed into the plastic container having been degassed, and a high-frequency oscillator for applying a voltage between the outer electrode unit and the inner electrode with a carbon source gas being fed into the container, thereby to generate plasma to form a DLC film on the inner surface of the plastic container. In the apparatus, the outer electrode unit comprises a bottom electrode disposed along the bottom of the plastic container, and a body electrode disposed along the body of the plastic container, and the upper edge of the bottom electrode is positioned below the center between the top and the bottom of the plastic container. DLC films having good oxygen barrier properties, and DLC film-coated plastic containers suitable to oxygen-sensitive drinks and to sparkling drinks are produced by the use of the apparatus. Also disclosed is a method for producing a DLC film on the inner surface of a plastic container by the use of the apparatus.

This invention relates to an irreversible indicator for detecting oxidizing agents, or in particular an oxygen indicator, comprising at least one redox-sensitive dyestuff, at least one semiconductor material and at least one electron donor. This indicator is activated by exposure to light of about 200-400 nm. The invention also relates to UV light detector.

The invention relates to a nano preservative film for preventing edible fungus from deterioration and application thereof, and a preparation method and application thereof, belonging to the technical field of agricultural product storage processing. The preparation method comprises the following steps: taking 15 wt% of nano powder (30% of nano silver, 35% of nano titanium dioxide, 25% of nano attapulgite and 10% of nano silicon dioxide), 45 wt% of low density polyethylene, 22 wt% of low density linear polyethylene, 10 wt% of dispersing agent, 5 wt% of lubricant and 2 wt% of coupling agent, evenly mixing, extruding, cooling and carrying out set cutting to obtain a nano master batch; and taking 7.5 wt% of nano master batch, 8 wt% of antifogging agent master batch and 84.5 wt% of low density linear polyethylene, carrying out hot melt, evenly mixing, and running to form the nano preservative film with the thickness of 18 mu m. The nano preservative film is used for packaging edible fungus to form a high-humidity low-oxygen environment; the lower spoilage microorganism activity and ethylene content can effectively inhibit the after growth, deterioration and other phenomena of the edible fungus, effectively maintain the storage quality and enhance the commodity value of the edible fungus; and thus, the nano preservative film has wide market prospects.

The present invention is directed to a thermoforming pack made of top and bottom web films and to a method of forming said pack.

The invention relates to a method for recycling at least one mixed PET plastic article, the method comprising degrading at least PET of the mixed PET plastic article to monomers and / or oligomers using an enzyme and recovering the resulting monomers and / or oligomers. The method of the invention may be used for depolymerizing, simultaneously or sequentially at least two different polymers of the mixed PET plastic article, and / or for recycling at least two mixed PET plastic articles.

A composition for a highly reliable thermal interface materials includes: (A) moisture-resistant polymer with a water permeability coefficient preferably less than 10−11 cm3 (STP) cm / cm2 S Pa, (B) gas barrier polymer having oxygen permeability coefficient preferably less than 10−14 cm3 (STP) cm / cm2 S Pa, (C) antioxidant, (D) thermal conductive filler and (E) other additive or optional materials. The thermal interface materials placed in between the thermal generating and dissipating devices can effectively barrier water and oxygen penetration, preventing the thermal fillers from degradation and improving the reliability of the devices.

The invention relates to a yttrium silicate modified silicon carbide fiber reinforced silicon carbide composite material and a preparation method thereof. The preparation method comprises the following steps: (1) sequentially preparing a yttrium silicate interface layer and a silicon carbide interface layer on the surface of a silicon carbide fiber prefabricated body so as to obtain a yttrium silicate modified silicon carbide fiber prefabricated body; (2) soaking the yttrium silicate modified silicon carbide fiber prefabricated body prepared in the step (1) into a carbon precursor solution, and sequentially carrying out a curing step and a cracking step on the soaked yttrium silicate modified silicon carbide fiber prefabricated body; (3) at least repeating the step (2) once so as to obtaina porous silicon carbide fiber prefabricated body; (4) carrying out a liquid silicon infiltration reaction on the porous silicon carbide fiber prefabricated body prepared in the step (3), thereby obtaining a yttrium silicate modified SiC / SiC composite material. The yttrium silicate modified SiC / SiC composite material provided by the invention has excellent oxidation resistance, temperature resistance, vapor corrosion resistance, and the like, and is excellent in comprehensive property.

The invention relates to a nano-packaging material for keeping fruit fresh and the application thereof, pertaining to the technical field of storage and processing of agricultural products. 25 percent to 35 percent of nano-powder (35 percent of nano-silver, 40 percent of nano-titanium dioxide and 25 percent of kaolinite), 50 percent to 60 percent of plastic, 10 percent to 15 percent of coupling agent and 4 percent to 10 percent of wax are taken, evenly mixed in a high speed for 0.5 h to 1.5 h, then kneaded in a plastic inhaling machine and finally extruded and cooled for 1min to 2min to be granulated to obtain the master batches. 30kg to 40kg of plastic particle and 1kg to 2kg of master batches are then fully mixed for 0.5h to 1h to be blown into films so as to obtain the nano-packaging material. When being used for packaging fruit, the nano-packaging material can inhibit the activity of oxidases of fruit and vegetables and postpone the accelerating maturity and senescence to maintain the freshness of the fruit. In addition, the gas exchange of the film is improved and the water-holding property of the package is enhanced to effectively prevent the water loss of the fruit and show an excellent bacteriostatic action. Therefore, the nano-packaging material of the invention has high feasibility and broad market prospect.

A blister packaging multilayer resin film is used to produce a blister package in which an item is sealed between a support substrate and the multilayer resin film, wherein the multilayer resin film includes an oxygen barrier layer that is arranged on a side of the multilayer resin film which side faces the support substrate, and a moisture proof layer that is arranged on a side of the oxygen barrier layer which side does not face the support substrate.

The invention relates to a nano preservation packing material for good-quality green tea and an application thereof, which pertains to the technical field of agricultural product storing and processing. According to mass ratio, 30 percent of nano-powder, 56 percent of polyvinyl plastics, 10 percent of silane coupling agent, 2 percent of paraffine and 2 percent of antioxidant are taken, stirred for 0.5 hour at a high speed, kneaded in a plastic extruding machine and then extruded and diced into grains, thus respectively obtaining grains D, HTB, TiO2R and TiO2A. 30kg of polyvinyl plastic grains is fetched and fully mixed with 5kg of grains for 0.5 to 1 hour, blasted into a thin film, plated with an aluminium film and made into a packaging bag of 30cm*20cm, thus manufacturing the nano packing material. The nano package is used for packing the green tea, which can effectively isolate oxygen and ultraviolet radiation from the tea, prevent the tea from going mouldy and losing quality caused by oxidation; meanwhile, the transmissivity of water is remarkably lowered, thus being capable of inhibiting the decomposition of chlorophyll, improving the quality of the green tea and having wide market prospect.

A barrier film for packaging food or beverage comprises a polymer base film, and a barrier layer comprising an inorganic oxide applied onto the base film by vapour deposition. The inorganic oxide layer is further coated with a healing layer of a crosslinked organopolysiloxane which is covalently bound to the inorganic layer. Other aspects disclosed here involve a multilayer packaging laminate comprised of the barrier film, and a method of manufacturing the barrier film and packaging containers manufactured from the film.

A GMR angle sensor for vehicles includes a GMR element in which the element resistance is changed in response to an external magnetic field, lead conductors connected to either end of the GMR element, and a protective layer that seals the GMR element and the lead conductors, wherein the protective layer has a laminated structure including an oxidation-resistant inorganic film that ensures that the GMR element and the lead conductors are sufficiently insulated and a silicone-based organic film laminated on the inorganic film.

The invention discloses a production technology of nanometer modified polyolefin resin film, In the technology, un-stretched polypropylene film production process comprises: preparing modified nanometer silica, preparing modified nanometer montmorillonite, adding the prepared modified silica and modified montmorillonite into polypropylene homopolymers, adding dispersant, high speed banburing, melting, extruding and granulating to obtain parent material, melting the parent material, extruding, quenching, thickness measuring, corona treating, winding, cutting and packaging; and the production process of bidirectional stretched polypropylene film comprises an extra step of bidirectional stretching after the quenching step; wherein the weight percentages of the added substances are: modified silica 2%, modified montmorillonite 1.5%, F800E polypropylene homopolymers 93.5% and dispersant 3%. The invention solves problems of poor obstructing performance, relatively high oxygen transmittance, no antibacterial effect and insufficient rigidity of material existing in present CPP and BOPP films in our country; can prolong the shelf life of packing.

A medical device including a silicone hydrogel which is less likely to harden due to drying, and which is less likely to cause stimulation at a site in contact with a human body, is disclosed. The medical device includes a silicone hydrogel satisfying the following conditions: (1) the water content in hydrous state is within the range of 10% by mass to 70% by mass; (2) the content of silicon atoms with respect to the total mass in dry state is within the range of 8% by mass to 30% by mass; and (3) the tensile elastic modulus in dry state is within the range of 0.1 MPa to 3.5 MPa.

The invention relates to a nano packing material suitable for keeping edible fungi fresh and application thereof, and belongs to the technical field of agricultural product storage and processing. The nano packing material is manufactured by the following steps of: mixing 30 percent of nano composite powder, 68 percent of linear low-density polyethylene (LLDPE) and 2 percent of coupling agent uniformly in a mass ratio at a high speed for 0.5 hour, kneading and extruding the mixture in a plasticizer, cooling the mixture for 1 to 2 hours, and granulating the mixture to obtain a nano master batch; and weighing 3.75 percent of nano master batch, 3.75 percent of antifogging agent master batch and 92.5 percent of composite plastic particles in a mass ratio, fully mixing the materials uniformly, then blowing the mixture to form a thin film, and manufacturing the nano packing material with bottom length of 40 centimeters, width of 15 centimeters and bag height of 70 centimeters. The nano material is used for packing edible fungi, forms a high-temperature low-oxygen environment, has low corrupted microbe activity and ethylene content, can effectively inhibit opening, water loss, brown stain and corruption of the edible fungi, keeps the storage quality of the picked edible fungi well, prolongs the shelf life of the edible fungi, and has broad market prospect.

The invention belongs to the technical field of modified thermal conductive plastics and in particular relates to a graphene-like modified thermal conductive plastic and a preparation method thereof. The graphene-like modified thermal conductive plastic comprises the components of a plastic base material and graphene-like, wherein the plastic base material accounts for 80-90 weight percentage of total mass; the graphene-like accounts for 10-20 weight percentage of total mass; and the carbon content of the graphene-like is more than or equal to 97 percent; the bulk density of the graphene-like is 0.15-0.3g / ml. Because the graphene-like modified thermal conductive plastic is prepared by mixing high-density graphene-like powder and the plastic base material, and the bulk density of the graphene-like powder reaches 0.15-0.3g / ml, so that the graphene-like powder can be fully mixed with the plastic base material, and the graphene-like powder in a layered structure can be uniformly distributed in the plastic base material and forms a meshed structure with a plastic high polymer. Therefore, various mechanical properties of the plastics are remained to the greatest degree, and the plastic has excellent thermal conductive performance.

The invention relates to a method for preparing a LaB6 / Si-Mo gradient high-temperature anti-oxidation coating. According to the method, a SiC internal coating is prepared on the surface of a C / C composite material to relieve the problem of concentrated thermal stress caused by thermal expansion coefficient difference between a matrix and the coating; the intermediate layer is a SiC-MoSi2 transition coating and serves as a transition layer of internal and external coatings, cracks, pores and other defects of the external coating generated under a high-temperature condition can be effectively reduced, the excellent high-temperature oxidation resistance of the coating can be achieved, and the resistance adaptability of the C / C composite material under high-temperature aerobic relieving condition is further improved; the LaB6 / Si-Mo coating is prepared by utilizing a plasma spraying method, so that the thickness of the coating can be accurately controlled, and the problem of uneven thickness of the coating is solved. Gradient is sequentially formed among the coatings, so that generation of thermal stress is reduced, and the binding force among the coatings is improved. Advantages of the plasma spraying method and an embedding method are combined, so that the high-temperature oxidation resistance of the coating can be greatly improved.