Applications of Amorphous PET (A-PET) in Packaging

Lightweight, durable wine bottles made from polymer materials like PET that are suitable for long-term storage of wine without insulating packaging. The bottles have walls thin enough to reduce weight but thick enough to withstand corking and uncorking forces. The interior is coated with a thin barrier layer to limit oxygen and volatile compound transfer. The coating prevents oxidation and preserves wine quality. The bottles weigh less than 300 grams for a 750 ml capacity, compared to 500 grams for glass bottles, and are suitable for shipping without insulation. The thin walls and light weight make them more sustainable than glass bottles.

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Lightweight, durable wine bottle made of polymer material like PET that is suitable for long-term storage of wine with natural cork stoppers. The bottle has a coating on the inside to prevent oxygen and volatile compound transfer. The polymer walls are thick enough to withstand corking and uncorking forces. The bottle dimensions and weight are optimized for compatibility with existing bottling lines and shipping. The lightweight design reduces weight by up to 50% compared to glass bottles.

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A packaging film for volatile preparations like aromatics and insect repellents that resists delamination during distribution and storage. The film has a sealant layer made by extrusion laminating a low-crystallinity (<15%) PET resin onto one side of a stretched PET film. This layer is combined with a water vapor barrier layer made by stretching a PET film. The barrier layer is laminated onto the sealant layer. The low-crystallinity sealant layer prevents delamination of the barrier layer during volatile component evaporation.

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Polyester film with excellent crease retention, low shrinkage, aroma retention, and transparency. The film has multiple layers with at least one layer dedicated to crease retention. The crease retention layer has a specific amorphous component content range to balance properties like fold angle, shrinkage, opacity, and aroma retention. The film is made by sequential stretching and heat treatments to achieve the desired layer structures.

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PET bottle with a shrink film derived from a recycled PET resin that maintains transparency and colorlessness when molded into a predetermined shape and recycled. The recycled PET content is 20-50% by weight. The shrink film has low haze and chromaticity coordinates. It uses amorphous PET and limits molecular weight to maintain transparency when recycled. The film is thermally shrunk onto the PET bottle.

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Bio-based diols composition for producing biobased polyester resins with high optical clarity suitable for packaging applications. The composition contains a mixture of diols, including ethylene glycol, with high UV and visible light transmittance. This allows using the bio-based diols to replace petroleum-derived ethylene glycol in PET packaging without compromising clarity. The bio-based diols can be obtained from lignocellulosic biomass feedstocks.

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Polyester film with excellent heat-seal strength, low shrinkage, and reduced adsorption of organic compounds. The film is made from a specific type of polyester resin that contains amorphous regions. The polyester has a glass transition temperature (Tg) below 70°C and a thermal paste strength of 5-25 N/15 mm. The film also has low heat shrinkage when heated, low thickness variations, and good flatness after heat-sealing. This makes it suitable for use as a sealant in packaging applications like food, pharmaceuticals, and chemicals where adsorption of oils and flavors is a concern. The film can be made by extrusion coating, lamination, or stretching techniques.

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Transparent multilayer coextruded barrier film that reduces the Crystallinity and high clarity of the overall film. The film includes multiple layers of amorphous polymers that can be used as outer film layers to render inner film layers (and thus, the overall film) clearer.

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A lightweight, recyclable, refillable, and reusable jar for cosmetics that reduces plastic waste and has a premium feel. The jar is made by separately forming and assembling two or more PET components with wall thickness less than 5mm. This allows the jar to be filled with cosmetics without needing a lot of material. The components can be clear, uncrystallized PET for a premium look. The separate assembly enables better control over component shapes, sizes, and wall thicknesses for optimized performance.

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A lightweight, recyclable, refillable and reusable jar for personal care products that uses less plastic and promotes circular economy. The jar is made by separately forming and assembling two clear, uncrystallized PET components with maximum wall thickness less than 5mm each. This allows the jar to be made from thin-walled PET that is easier to recycle and reduces material use compared to conventional thick-walled jars. The two-part construction also enables easier disassembly for recycling or refilling compared to one-piece jars. The inner and outer jar components are fixed together to create the final jar shape.

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A packaging film for volatile preparations like fragrances and insect repellents that prevents delamination and leakage during distribution and storage. The film has a stretchable PET sealant layer and a thin PET water vapor barrier layer with low crystallinity. The low crystallinity barrier layer prevents delamination from the sealant layer when volatile components volatilize during distribution and storage. This prevents leakage of the volatile preparation through the film.

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A polyester film with excellent heat-sealability for packaging applications that has low crystallinity to improve heat-sealing strength with other polyester films. The film is made by melt-extruding a polyester resin containing amorphous monomers, then uniaxially or biaxially stretching it. The amorphous monomers reduce crystallinity to improve heat-sealing. The film has low melting heat capacity (10-40 J/g) compared to crystalline polyester films. The low crystallinity allows better heat-sealing of the film to other polyester films, both stretched and unstretched. It also reduces adsorption of organic compounds compared to crystalline films. The low crystallinity can be controlled by selecting amorphous monomers in the polyester resin.

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A jar for containing thick, pasty or bulk liquid food products like honey, jam or dried fruit, that is made of polymer plastic and has a unique design to mimic the appearance and functionality of glass jars while addressing the challenges of using plastic for food packaging. The plastic jar has an inner ring with an external screw thread to receive a hermetically sealing metal capsule. This allows the capsule to close the jar opening while the jar itself is made of flexible plastic. The threaded ring prevents the capsule from deforming or destroying the jar when filling with hot product. The capsule can be metal for better quality perception. The ring has a large diameter opening for easy spoon access. The jar can be made of transparent polyethylene terephthalate.

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Composition for producing clear packaging materials from bio-based diols. The composition contains a high percentage of bio-based diols like ethylene glycol, cyclopentanediols, and cyclohexanediols. The diols have high UV-visible light transmission to make clear packaging. The diols can be derived from lignocellulosic biomass conversion. The composition can replace petroleum-based diols in PET production to create clearer, more sustainable packaging.

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A polyester film with excellent folding retention, low shrinkage, aroma retention, and transparency. The film is made of multiple layers with at least one folding retention layer. The folding retention layer contains a specific amorphous component amount and orientation angle range. The total amorphous component amount is 12-30 mol%, and the folding angle is 20-70 degrees. This provides good foldability without shrinkage. The film also has low heat shrinkage of 0-15% after hot water treatment. The folding retention layer prevents creasing when folded, and the low shrinkage prevents deformation in heat. The film is useful for packaging, bags, and origami.

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Laminated film with excellent barrier properties and heat-sealing strength for packaging applications. The film is made of a base film containing a polyester resin and an aluminum thin film layer. The polyester base film has multiple layers, with at least one heat-sealing layer. The heat-sealing layer contains 12-30 mol% of monomers that can be amorphous. The difference in amorphous component content between the heat-sealing layer and other base film layers is 4-30 mol%. This composition provides good heat-seal strength between polyester films and polyester/crystalline films, as well as lower shrinkage, thickness accuracy, light blocking, and gas barrier properties compared to conventional polyester films.

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High molecular weight polyesters containing 2,5-furandicarboxylic acid (FDCA) units that can be used for clear plastic bottles, fibers, and films without discoloration. The polyesters are prepared by a three-step process involving making a prepolymer with FDCA, followed by melt polycondensation under reduced pressure at elevated temperature using a catalyst. This avoids discoloration compared to direct polymerization of FDCA. The resulting polyesters have high molecular weight and low color compared to prior FDCA polymers.

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Film for packaging volatile preparations like fragrances, insect repellents, and insecticides that prevents drug adsorption and loss of potency during storage and use. The film is a laminate of a stretched PET film and a PET resin layer with low crystallinity (<15%) that is extruded and laminated onto one side of the PET film. This provides both high gas barrier and heat sealability without adsorbing the volatile drugs. The low crystallinity PET resin allows heat sealing at lower temperatures compared to conventional PET, enabling packaging of volatile drugs using conventional sealing equipment.

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Polyester film with excellent folding and holding properties, water resistance, low shrinkage in high temperatures, transparency, and thickness uniformity. The film has multiple layers, including a folding holding layer with specific amorphous content levels. The folding holding layer is provided on at least one surface layer. The film also has a folding angle between 20-70 degrees and low hot water shrinkage of 0-15%. This allows the film to fold and hold its shape without shrinking when exposed to hot water. The film is useful for packaging, bags, and folding applications.

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A thin, high rigidity, and curl-resistant multilayer film for deep drawing packaging applications like sliced meat. The film has three layers: an outer layer with multiple amorphous PET layers, an intermediate barrier layer, and an inner easy-peel POM layer. The total film thickness is 40-120 μm, with the PET layer thickness being 40-75% of the total. This configuration provides high rigidity, curl resistance, and barrier properties in a thin film for deep drawn packaging without impairing transparency and gloss.

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