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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A sealant film for ultraviolet shielding packaging materials that has good productivity and provides both ultraviolet protection and visible light transmission. The sealant film has a laminated structure with layers containing thermoplastic resins. The ultraviolet shielding layer contains zinc oxide particles in a thermoplastic resin. The film provides ultraviolet shielding without bleedout issues like organic UV absorbers. The zinc oxide particles are small enough to prevent light dispersion in the visible range. The sealant film has good low temperature sealability and lamination strength.

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Ultraviolet blocking packaging material and bags that allow visible light transmission while blocking UV rays. The material has layers for UV blocking, gas barrier, adhesive, and sealing. The UV blocking layer contains a polyvinyl alcohol resin and inorganic layered compound. The gas barrier layer has a low solid content aqueous polyurethane resin and inorganic layered compound. This allows the packaging bags to protect light-sensitive contents without obscuring visibility. The layered structure enables gas barrier, adhesion, and moisture resistance while avoiding issues like absorption of solvents or diluents.

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Transparent light-shielding packaging film that prevents deterioration of packaged products due to UV and visible light without compromising visibility. The film has layers in order: sealant, adhesive with UV absorber, barrier, and overcoat with light reflective particles. The overcoat contains light reflecting particles like glass beads, polyurethane, and has thickness 10-50um. The adhesive contains UV absorber and has thickness 10-50um. The barrier blocks oxygen and moisture. The film blocks UV/visible light in 300-500nm range while having 80-98% transmittance.

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Single-layer plastic container with very high light shielding, even approaching total shielding in the visible and ultraviolet spectrum. The container has a lightweight structure made of two complementary thermoplastic polymers that form the container walls. The light shielding is provided by a concentrated additive containing two different inorganic fillers dispersed in the polymer base. This allows high filler loadings in the container without affecting color or processability. The fillers, typically TiO2 and Al, provide complementary light shielding in different spectral regions. The container can shield sensitive products from light degradation without the complexity and costs of multilayer containers.

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Biaxially stretched sheet material for food packaging containers with improved balance of properties like transparency, rigidity, oil resistance, heat resistance, chemical resistance, and shrinkage resistance compared to traditional polystyrene sheets. The sheets are made from acrylonitrile-styrene copolymers that have alignment stress values in the MD and TD directions within specific ranges to provide good strength, folding resistance, and oil resistance. The sheets also contain additives like UV absorbers, antioxidants, and antifogging agents to enhance properties.

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Single-layer plastic container with very high light shielding, even approaching total shielding, while maintaining a very light weight. The container uses a two-polymer structure with complementary properties and a two-filler shielding system with complementary light absorption spectra. The container has an outer layer made of a white polymer like PET, and an inner layer made of a different polymer like HIPS. The fillers contain two inorganic substances like TiO2 and Al that provide complementary light shielding in different regions of the spectrum. This allows very high shielding across the visible and UV ranges without darkening the container color. The fillers are dispersed in the HIPS inner layer during polymerization to create a homogeneous shielding layer inside the container.

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Method for testing the photoprotective properties of packaging materials using a controlled environment and light source. The method involves exposing a known photosensitive substance to light through a sample cell with controlled optical properties. A test material is placed between the light source and cell to filter the light. By correlating changes in the photosensitive substance with the test material's known properties, the method can predict the photoprotective performance of untested materials. This allows comparisons between materials and creating performance models.

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Multifunctional nanocomposite packaging material that provides corrosion protection, antistatic properties, EMI shielding, antimicrobial activity, oxygen scavenging, hydrogen sulfide absorption, UV absorption, improved food freshness, and barrier properties for packaging metal parts, electronics, and food. The packaging material is made by blending metal powders with film forming polymers, along with other additives like precipitated silica, metal oxides, and conducting polymers. The composite films are prepared using extrusion techniques. The multifunctional packaging can protect against corrosion, microbial attacks, electromagnetic interference, UV radiation, and improve food freshness while potentially reducing oxygen levels and absorbing hydrogen sulfide.

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Radiation curable inkjet inks for high reliability, food safe, UV LED curable inkjet printing on packaging. The inks contain a low concentration of bisacylphosphine oxide as photoinitiator, a vinyl ether monomer, and a thioxanthone photoinitiator. The low bisacylphosphine oxide concentration prevents migration and improves reliability. The vinyl ether monomer allows low viscosity inkjetting. The thioxanthone photoinitiator enables UV LED curing. The inks can be used in high speed inkjet printing on food packaging materials. The composition provides low migration, UV LED curability, and reliable inkjetting for food packaging applications.

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Protecting glass plates from UV radiation during storage and transportation without transferring coating to the glass. The solution is coloring the interleaving paper between the glass plates to block UV rays. The paper is L*a*b b* with maximum L value of 70 and UV transmittance of 10% or less in the 250-280 nm range and 15% or less in the 280-350 nm range. This coloring prevents UV from discoloring or degrading the glass plates.

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Transparent packaging film that prevents degradation of contents by blocking UV and short visible light without obscuring visibility. The film has layers in order: sealant, adhesive with UV absorber, barrier, overcoat with light reflective particles. The overcoat prevents light transmission below 500nm while the sealant and barrier block UV. The adhesive connects the layers. The film has 80-98% visible light transmission and shields 300-500nm light.

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Packaging film for long-term outdoor storage of products like building materials and food that resists degradation from UV radiation and environmental exposure to maintain quality and extend lifespan. The film has a base layer of low-density and linear low-density polyethylene sandwiched between layers containing stabilizers and a compounding agent. The stabilizers prevent chemical transformation and degradation from UV and environmental exposure. The film is made by electrostatically separating the polyethylene and compounding agent layers during extrusion to prevent mixing.

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Biaxially stretched acrylonitrile-styrene copolymer sheet for food packaging containers that provides balanced properties of transparency, rigidity, heat resistance, oil resistance, and chemical resistance. The copolymer sheet has alignment stress levels between 0.2-0.6 MPa in the MD and TD directions, with a difference between the directions of less than 0.3 MPa. This provides strength, folding resistance, and low shrinkage force. The copolymer contains UV absorbers, stabilizers, and antioxidants to prevent degradation and whitening when exposed to light and oil. The sheet also has a water contact angle of 5-15 degrees for antifogging.

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Multilayer film for heat shrink packaging that suppresses ultraviolet light transmission and maintains good seal strength. The film has three layers, A and C containing polyolefins and B containing an ethylene-vinyl acetate copolymer with 1-30% vinyl acetate. The lower vinyl acetate content prevents UV absorber migration from B to the outer layers. This stops UV absorber bleeding and maintains UV barrier properties. It also prevents UV absorber on the surface from impairing seal strength.

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Pouch for storing liquid like water that has extended shelf life and improved barrier properties to prevent degradation of the contents. The pouch is made of a multilayer laminate with specific polymeric materials and adhesive composition to provide better barrier properties against oxygen, water vapor, and UV light. The laminate structure has a base film of matt polyester for UV protection and an adhesive with isocyanate and hydroxyl groups. The pouch also has a sealing jaw for easy opening and a spout for drinking.

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Composite pouch for aseptic food packaging that provides improved strength, leak resistance, and shelf life compared to conventional single-layer pouches. The pouch has an inner bag made of polyethylene inside an outer bag made of a composite structure. The composite outer bag has an inner polyethylene layer, an interlayer with aluminum coating, and an outer polyethylene layer. An adhesive joins the layers. The composite structure provides better puncture resistance and UV protection compared to single-layer pouches.

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Barrier film for packaging applications that provides improved barrier properties against water vapor and oxygen compared to conventional polymer films. The film has a base layer of PMMA (polymethacrylate) and an outer inorganic oxide layer. The inorganic layer enhances barrier properties while the PMMA base provides transparency and impact resistance. UV absorbers, stabilizers, and radical scavengers are added to the PMMA to prevent degradation. The PMMA layer also allows optical properties like transparency to be maintained.

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