UV Stabilizers for Package Protection

Short wavelength light-shielding film for packaging materials that allows contents to be seen through while blocking UV and short visible light. The film has an ink layer containing zinc oxide, an orange pigment, and a yellow pigment. The ink has high UV/short wave blocking while allowing visual recognition. The ink coating is 3g/m2 on the film. The film can be used as a laminate for secondary packaging of products like medicines. The ink and film provide both UV/short wave protection and visibility compared to opaque UV barriers.

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Heat-sterilizable multilayer films for medical packaging that protect light-sensitive medications. The films contain a middle layer with UV absorbers and colorants made from inorganic pigments like iron oxides, ferrites, mica, and mixed phase oxides. This layer sandwiched between outer layers helps prevent light degradation of contained drugs. The films are produced by coextruding the layers.

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Laminate for packaging materials that absorbs oxygen when irradiated with UV to prevent oxidation of packaged goods. The laminate has an outer layer that seals the contents, an inner oxygen-absorbing adhesive layer, and an optional middle barrier layer. The oxygen-absorbing adhesive contains a hydroxyl-terminated conjugated diene resin, transition metal carboxylate catalyst, and low antioxidant levels in the sealant. This allows oxygen absorption when the laminate is UV irradiated.

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A product pouch that protects enclosed items from damage during handling while also providing optical protection against UV radiation. The pouch has two compartments - one filled with shock-absorbing elements and the other with the products. This compartmentalization prevents the products from contacting and breaking against the shock-absorbing elements. The absorbing elements cushion and protect the products during drops and impacts. They also shield against UV radiation to prevent product degradation.

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Bacterial nanocellulose transparent film with oxygen, moisture, and UV blocking properties for food and electronics packaging. The film is made by irradiating wet bacterial cellulose with an electron beam to separate it into nanofibers containing carboxylate groups. The nanofibers are then formed into a multilayer film by filtration, drying, alkali treatment, and bleaching. The barrier properties come from the carboxylate groups on the nanofibers. The film has transmittance, swelling, and UV blocking similar to traditional cellulose films but with improved barrier properties.

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Packaging container and contact lens product for improved protection and visibility of contact lenses and solutions. The container has a concave holding area surrounded by a flat outer part. Both parts are made of a plastic material with added toner dispersed in it. This creates a light-blocking effect to shield the contents from UV/visible light. The container also has a light blocking rate of at least 20% in the 380-780nm range. The toner is dispersed at a specific concentration to balance light blocking and visibility. This prevents fading/degradation of lens/solution components while still allowing visual inspection.

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Product pouch arrangement for protecting fragile products during handling and transportation while maintaining visibility. The pouch has multiple compartments, with one filled with shock-absorbing elements. The products are in a separate compartment. The shock-absorbing elements cushion the products against impacts. The elements also protect against UV radiation to prevent product denaturation. The pouch design allows full visibility of the products while preventing breakage.

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Flexible packaging films with improved barrier properties and reduced yellowing compared to traditional vinylidene chloride (VDC) films. The films contain a specific dienophile additive, like methyl cinnamate, dibutyl maleate, or diethyl fumarate, that reacts with conjugated dienes formed during VDC degradation. This prevents yellowing and darkening of the films. The dienophiles stabilize the VDC chains by reacting with their double bonds in multiple Diels-Alder reactions.

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Multilayer composite film for packaging time-temperature indicators (TTIs) that provides excellent gas barrier properties, thermal adhesion, transparency, and non-reactivity with TTIs. The film has a layered structure starting with a PVC layer, followed by a UV blocking layer, and ending with a PET layer. The inner PVC layer provides adhesion to the TTI, the UV blocking layer prevents light damage, and the outer PET layer provides gas barrier properties.

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A multilayer composite film for packaging time-temperature indicators (TTIs) that provides excellent barrier properties, thermal adhesion, transparency, and compatibility with TTIs. The film has three to four layers: a PVC layer, a UV blocking layer, and an outer PET layer. The PVC layer provides thermal adhesion to the TTI substrate, the UV blocking layer prevents UV degradation of the TTI, and the PET layer provides oxygen barrier properties. The layers are laminated in a specific order to optimize performance.

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Packaging film and bags with both UV shielding and visibility for protecting sensitive products like food and pharmaceuticals. The packaging has an outer layer, printing layer, adhesive layer, and inner layer. The printing layer allows UV light transmission. At least one layer suppresses UV rays. This provides UV protection without blocking visible light for product inspection.

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A coating composition for food and beverage containers that provides improved properties like adhesion, resistance to chemicals, and UV stability compared to conventional coatings. The composition is formed by emulsion polymerization of monomers containing surfactants, followed by a second stage polymerization in the presence of the first stage copolymer. This forms a coating with crosslinking groups that react during curing. The composition can be sprayed onto container interiors and cured to create a durable liner. The coating is free of styrene and uses aromatic monomers like benzyl methacrylate for aromatic functionality.

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A transparent packaging material that blocks UV and water vapor to extend shelf life and preserve product quality. The material consists of a transparent polymer film, an adhesive layer, a UV blocking coating, a printed layer, and a transparent vapor deposition polyester film. The UV blocking coating contains organic-inorganic hybrids and UV absorbers. The printed layer uses an adhesive composition. The vapor deposition polyester film has reduced graphene oxide. This stacked structure allows viewing the contents while blocking UV and water vapor.

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An adhesive composition for laminated films used in packaging applications that provides both high visible light transmittance and high ultraviolet absorption while having excellent adhesive strength and low extractability. The composition contains a polyester polyol, a polyisocyanate, and an ultraviolet absorber containing zinc oxide with an average particle size of 10-80 nm. The specific polyester polyol, zinc oxide particle size, and composition ratios provide good dispersion stability and prevent settling or separation of the ultraviolet absorber. The laminated films made from this adhesive have high UV blocking and light transmittance.

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Pouch pack for food and beverage products that provides UV protection, temperature stability, and shock absorption to prevent deterioration. The pouch has UV blocking coatings on the front and/or rear surfaces, and may contain a vacuum layer with phase change material, nitrogen gas, and shock absorbers. This prevents UV exposure, maintains temperature, and cushions contents from external shocks. The pouch also has features like zippers and cutouts for filling and emptying.

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A single-layer packaging design that provides effective light protection for photosensitive products like food, pharmaceuticals, and biological materials. The design uses a high concentration (6-14 wt%) of treated titanium dioxide particles in the packaging layer. The TiO2 particles are coated with metal oxides and organic materials to enhance light protection. The layer thickness is 305-508 microns. This single-layer design provides light protection equivalent to multi-layer packages, without the need for additional layers. The high TiO2 concentration and treatment improves light protection while maintaining mechanical properties.

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Laminate film that suppresses deterioration and decay of contents and maintains the function and properties of the contents. The film includes a metal oxide or metal vapor-deposited layer, an adhesive layer, and a thermoplastic resin layer.

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UV blocking film for food packaging materials that provides long-term protection against light degradation without affecting the transparency or appearance of the packaging. The film contains a barrier layer with a natural product like carotenoids and a UV absorbing compound. This allows blocking of UV light without making the packaging opaque. The natural product provides oxygen and moisture barrier properties. The film can be produced by coating a composition containing the barrier layer components onto a base substrate.

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A transparent packaging material with UV and water vapor barrier properties for preventing quality deterioration of packaged products. The packaging material has a transparent polymer film, an adhesive layer, a UV-blocking coating layer, a printing layer, and a transparent deposited polyester film. The UV-blocking coating layer contains a sunscreen compound like benzotriazole. The transparent deposited polyester film has reduced graphene oxide to further block water vapor. This packaging material allows viewing the contents while preventing quality deterioration due to UV and moisture.

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A packaging laminate, material, and bag that absorb oxygen when irradiated with UV light to prevent mold growth and oxidation of filled products. The laminate has three layers: a substrate, an oxygen-absorbing adhesive layer, and a sealant. The oxygen-absorbing adhesive contains an unsaturated fatty acid ester resin, an oxygen-absorbing resin, an oxidation catalyst, and a UV initiator. The sealant has an antioxidant. The UV initiator triggers oxygen absorption when the bag is irradiated after filling to prevent mold and oxidation. The antioxidant in the sealant delays oxygen absorption before filling.

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