Recycled PET in Sustainable Packaging

A portable thermoelectric water bottle that generates electricity using the temperature difference between hot and cold liquids stored inside the dual chambers. The electricity is stored and used to charge external devices. The bottle has a thermoelectric generator assembly, a rechargeable power storage unit, and a DC output port. The thermoelectric generator uses peltier plates made of semiconductor materials like bismuth telluride, lead telluride, and silicon germanium. The bottle is made of recycled materials like PET-G. It also has a processor to monitor and display real-time voltage and battery percentage.

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A PET bottle separation and recovery device that sorts and processes used PET bottles to increase recycling efficiency. The device has a holder, transfer unit, crusher, ring separator, and measuring unit. It measures transparency, contamination, and lid presence of bottles. Bottles are crushed and separated based on measurements to optimize recycling. Transparent bottles are shredded in one area, opaque ones in another, and contaminated ones crushed. This allows recycling of transparent shards, shredded opaque sections, and crushed contaminated parts separately.

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Stretch blow-molded articles like toner bottles that prevent degradation of the contained toner powder and prevent wax transfer to the bottle surface when made from recycled PET. The molded articles contain a polyester, wax, and an inorganic layered double hydroxide or zeolite. The wax is adsorbed by the inorganic compound instead of transferring to the bottle surface, preventing chemical attack on the toner particles inside. This prevents deformation of toner particle surfaces when stored in the bottle. By using recycled PET, it reduces environmental impact compared to virgin PET.

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Processing dairy bottle recycling into new dairy bottles to enable closed-loop recycling of dairy packaging. The method involves creating new dairy bottles using recycled dairy bottles in the middle layer. The middle layer is made of opaque recycled plastic, like PET, to block light and preserve vitamins. The inner and outer layers are white for contact with the product. This allows using recycled opaque bottles instead of virgin plastic. The opaque recycled material provides sufficient light blocking.

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Cosmetic product applicator with easy recycling and simplified manufacturing. The applicator has a reusable rod and rod carrier made of a recyclable copolyester like recycled PET. The rod snaps into the carrier. This allows recycling of the entire applicator instead of just the rod. The copolyester is injection molded with a cooling spindle to speed cooling. The spindle channels are cooled to solidify the copolyester faster without deforming. This avoids prolonged cooling times for copolyesters. The snap-fit rod assembly prevents rotation during use.

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Recycling PET bottles to remanufacture a composite masterbatch of polyethylene terephthalate (PET) and ethylene-vinyl acetate copolymer (EVA) for use in foam shoe materials. The composite masterbatch is made by blending recycled PET, EVA, and a compatibilizer in specific ratios, then extruding and cutting the alloy into granules. The composite masterbatch is used to replace virgin PET in shoe foam production, reducing demand for new PET and enabling recycling of post-consumer PET bottles. The composite masterbatch can be adjusted for foam appearance by optimizing mold size.

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A machine to efficiently separate and crush PET bottles made of different materials like cap and body. The machine has an open-top frame with a cutting section at the front to separate the necks. The main body pressing section compresses the bottles after neck separation. A lower frame collects the compressed bodies which are crushed inside. The machine is driven by a unit that synchronizes all parts. This enables separating and crushing PET bottles with caps and bodies made of different materials, generating pure PET flakes with minimized impurities for circular recycling.

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Economical and practical method to recycle waste carbon fiber reinforced polymers (CFRP) and waste polyethylene terephthalate (PET) like water bottle waste into composite filaments with improved mechanical properties compared to recycled PET alone. The recycling involves shredding, grinding, mixing, and extruding the waste materials to produce composite filaments with 10-40% carbon fiber content. This process improves properties like elasticity modulus, yield strength, tensile strength, and toughness compared to pure recycled PET.

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Gas barrier film for packaging that reduces environmental impact and improves barrier properties compared to traditional films. The film contains chemically recycled polyester with specific intrinsic viscosity and melting point ranges. It also has a thin inorganic coating. The chemically recycled polyester allows using recycled material with lower environmental impact. The viscosity range prevents excessive stretching forces during film production that can cause breaks. The higher melting point improves heat resistance. The thin inorganic coating further improves barrier properties.

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Biaxially oriented polyester film containing chemically recycled polyester with low melt resistivity to prevent pinner bubbles during production. The film has 20-95% chemically recycled polyester and an alkaline earth metal-phosphorus ratio of 1.0-5.0. It reduces environmental impact by using recycled polyester and allows high film production speed without bubbles. The film can be used in laminates for packaging containers.

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Biaxially oriented polyester film with improved strength and reduced breakage during production, containing chemically recycled polyester with specific properties. The film has an intrinsic viscosity of 0.50-0.70 dl/g and melting point of 251°C or higher. This reduces stress during stretching and prevents film breakage. The chemically recycled polyester content is 20% by mass or more. The film can be used in laminates and packaging containers. The recycled content reduces environmental impact.

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Recycling system for transparent PET bottles that allows only pure PET resin particles to be extracted for recycling. The system is installed in common facility recycling points. It involves washing, crushing, screening, drying, and collection steps. Bottles with labels removed go through washing, then crushing to shreds. Screening removes impurities. Drying removes moisture. The pure PET particles can then be collected for recycling. This prevents contamination from adhesives and labels, making the recycled PET more valuable.

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Packaging blends for clear PET bottles that can be recycled into clear PET without degrading quality. The blends contain a polyester like PET and a second polymer that forms a separate glass transition temperature. This prevents the second polymer from interfering with PET recycling. The blends can have high haze or opacity for opaque packaging. To recycle, the blends are treated to reduce opacity and transesterify the second polymer into the PET. This converts back to clear PET for recycling.

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Microwavable food package with steam vent and easy opening. The package has a base layer made from recycled PET and a heat-sealable layer. It has an opening guide on the back seam to help tear open the package. The opening starts at a designated point. The guide prevents the tear from extending too far. The recycled PET base reduces environmental impact. The guide allows a wide opening and using the package as tableware.

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Eco-friendly ice pack pouch and manufacturing method for making ice packs with reduced environmental impact compared to traditional ice packs. The pouch is made of a composite material containing both recycled and non-recycled resins in a specific weight ratio. The pouch is folded, sealed, and cooled in multiple steps to fill it with water and freeze. This allows reusing the pouch and reducing waste compared to disposable ice packs.

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Biaxially oriented polyester film containing chemically recycled polyester to reduce environmental impact and yellow tone. The film has a specific composition of chemically recycled polyester with low levels of low molecular weight components. This prevents film breakage during stretching. The chemically recycled polyester has an inherent viscosity lower than regular polyester, but similar to mechanically recycled polyester. The low molecular weight component content is controlled to avoid excessive breakage. The chemically recycled polyester is derived from decomposing and polymerizing the polyester from used bottles.

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Biaxially oriented polyester film made from chemically recycled polyester with improved properties compared to using mechanically recycled polyester. The chemically recycled polyester used in the film has specific molecular weight characteristics. It has an intrinsic viscosity below 0.62 dl/g and a low percentage (<3.5%) of low molecular weight components with a molecular weight of 1000 or less. This chemically recycled polyester can be blended with fossil fuel-derived polyester to make the film. The film has reduced environmental impact from using recycled polyester, improved tensile strength, puncture strength, and reduced breakage during stretching compared to using mechanically recycled polyester.

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Recycling method and system for fiber-reinforced thermoplastic composites that allows efficient reuse of scrap material from composite manufacturing. The method involves melting and blending the waste composite into a homogenous mixture. This molten mixture is then molded into the desired shape. The blending step helps to break down the matrix material and distribute the fibers evenly, preventing damage to the fiber properties during recycling. The system includes equipment like pulverizers and melters to implement the recycling process.

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Recycling waste polyester to produce recycled polyester chips with improved properties for use in fiber applications. The recycling process involves depolymerizing waste polyester to make a depolymerization product. An oligomer is then synthesized by reacting dimethyl sulfide and ethylene glycol. This oligomer is condensed with the depolymerization product to make a modified polyester resin. The resin is filtered to reduce foreign matter content. The resulting recycled polyester chips have lower foreign matter index compared to directly recycling waste polyester. This improves cation dyeability and fiber properties like strength.

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Recycling packaging waste made of PET or Polyolefin (PO) and at least a second article made of PET or PO, referred to as first article and which can be decolorized according to the &#34;key&#34; principle. The recycling process includes decolorization or contaminant removal, and a modification step.

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