Innovations in Bio-Based Polyethylene for Eco-Friendly Solutions

A polyethylene laminate with improved heat resistance while maintaining heat sealability and recyclability. The laminate has a base layer with a density of 0.930 g/cm3 and a heat seal layer with the same density. The base layer is made from a polyethylene with density less than 0.930 g/cm3, containing biomass polyethylene, that is treated with electron beam irradiation. This allows the laminate to have both heat resistance and heat sealability. The laminate can further have an intermediate layer between the base and seal layers. The densities and composition are optimized to balance properties like heat resistance, sealability, and recyclability.

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Renewably-sourced biodegradable polyolefin packaging, utensils, and containers that can decompose under anaerobic conditions without UV light. The packaging, utensils, and containers are made by mixing renewable polyolefins with biodegrading agents. The biodegrading agents enhance biodegradation of the polyolefins. This allows the packaging, utensils, and containers to decompose in landfills without harming the environment.

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Packaging adhesives containing polyester polyols based on betulin, a natural compound found in birch bark, for sustainable packaging applications. The adhesives have high renewable content and improved properties compared to conventional adhesives. They provide good adhesion and resistance to aggressive filling materials. The adhesives are prepared by reacting betulin-derived polyols with diacids to make polyesters. The betulin-based polyols provide renewable raw material content. The resulting adhesives can be used for bonding film-like substrates in sustainable packaging applications.

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Sheet for press-through packaging, like for medicine blisters, with improved properties for environmental friendliness and manufacturing ease. The sheet contains vinyl chloride resin, biomass resin, and a plasticizer. It has a specific storage modulus range of 1-2.6 GPa at 30°C. The biomass resin is a butylene succinate like polybutylene succinate. The plasticizer is epoxidized vegetable oil like epoxidized soybean oil. The vinyl chloride resin has low chlorine content. This composition allows manufacturing press-through packages with biomass content over 10% and reduced bleeding of plasticizers during production.

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A carbon neutral heat-sealable layered film for packaging applications. The film has a biaxially stretched polyamide base layer containing a specific polyamide resin derived from biomass, sandwiched between sealant layers. The sealant layers are made of a propylene-α olefin random copolymer with varying amounts of linear low-density polyethylene. The biomass-derived polyamide in the base layer provides heat resistance and impact strength. The sealant layers provide heat sealing and pinhole resistance. The film is carbon neutral since it contains biomass-derived polyamide and the sealant layers have biomass-derived LLDPE.

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Packaging material with increased biomass content to reduce fossil fuel usage. The packaging has layers like base, printing, adhesive, barrier, and sealant. The adhesive layer uses a cured product of a biomass-derived polyol and fossil fuel-derived isocyanate. The polyol can be a biomass-derived polyester or polyether. This allows higher biomass content in the adhesive compared to conventional fossil fuel-based adhesives. The printed layer can also use biomass-derived polyols. The packaging material reduces fossil fuel usage by substituting biomass-derived components in the adhesive and printed layers.

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Blow molded bottle container with improved thin-wall thickness, drawdown resistance, and burr removal properties. The container has a specific ratio of bio-based polyethylene, high density polyethylene, and linear low density polyethylene. The ratio of bio-based polyethylene to total polyethylene is 20-50%. The ratio of (bio-based + high density):linear low density polyethylene is 40:60 to 60:40. This composition allows thin-walled containers with reduced deformation and burr retention compared to conventional containers. The thin-walled containers have better drawdown resistance and easier burr removal during molding.

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Eco-friendly packaging composition made from fried food waste, biomass, and a solvent. The composition can be molded into 3D structures and used as a sustainable packaging alternative. The fried food waste provides a binding agent, the biomass adds strength, and the solvent helps mix it all together. The composition is derived from fried food scraps, like oil-rich crumbs, and uses biodegradable materials to reduce environmental impact compared to traditional petroleum-based plastics.

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A biodegradable and recyclable packaging material made from a stretched and irradiated biomass-derived polyethylene substrate. The biomass-derived polyethylene film is stretched and electron beam irradiated to improve its strength and heat resistance. This allows using it as a base material for packaging instead of laminating with a separate heat seal layer. The irradiated substrate is laminated with a heat seal layer to form a recyclable packaging material. The irradiation treatment enhances the substrate's strength and barrier properties. The biodegradable packaging can be made from the laminate by folding and heat sealing it.

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Packaging laminate material, outer layer adhesive, and a method for producing the same that uses environmentally friendly materials. The packaging laminate has an inner layer film, outer layer film, aluminum foil, inner adhesive, and outer adhesive. The outer adhesive is a polyurethane made from an eco-friendly polyester polyol derived from recycled polyester or biomass raw materials. The polyol has a weight average molecular weight of 25,000 to 75,000, number average molecular weight of 18,000 to 55,000, and glass transition temperature of -30°C to 60°C. The isocyanate component is an adduct of toluene diisocyanate and a C4-C15 polyol.

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Enriched edible films for primary food packaging made from waste fruit peels like banana and jackfruit peels, to replace non-biodegradable plastics and foils. The films are made by extracting nutrients like antioxidants, vitamins, and minerals from the fruit peels, then combining them with biopolymers to create edible films that can be used as primary packaging for food. This provides a sustainable and nutritious alternative to plastic wraps, reduces waste, and enhances the nutritional value of packaged foods.

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Laminate structure for packaging materials with improved recyclability. The laminate has a base layer made of polyester, an intermediate layer made of a stretched film, and a heat seal layer made of biomass-derived polyethylene. The base layer thickness is smaller than the sum of the intermediate and heat seal layer thicknesses. This allows separating the layers during recycling. The stretched intermediate layer improves strength and heat resistance compared to the base layer. The biomass-derived polyethylene in the layers maintains performance. The laminate can be used in packaging applications like bags and pouches.

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Packaging material with increased biomass content for products that do not require sterilization. The packaging has a base layer, printed layer, adhesive layer, and sealant layer. The adhesive and printed layers contain biomass-derived components like biomass-derived polyols (alcohol-isocyanate reactions) and biomass-derived colorants. This increases the overall biomass content of the packaging compared to fossil fuel-based alternatives. The packaging can be used for products that don't need heat sterilization, like food items that are already pre-packaged and sealed.

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A biomass-derived polymer for making lightweight, porous materials like sheets and bottles with improved properties for applications like display screens and packaging. The polymer is a biomass-derived 4-methyl-1-pentene polymer that is blended with a polyester resin. The polymer has a specific composition with 30-100 mol % 4-methyl-1-pentene units derived from biomass and 0-70 mol % units from other α-olefins. The blended resin can be processed into porous sheets or bottles with voids by stretching or blow molding. The biomass-derived polymer provides mechanical strength, light scattering, and biodegradability compared to fossil-based polymers.

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Cover tape for packaging electronic components that resists delamination when peeled off after exposure to high temperature and humidity. The cover tape has a base layer, an intermediate layer, and a sealant layer. The key feature is an anchor coat layer made of a water-based urethane adhesive between the base and intermediate layers. This prevents delamination when removing the cover tape from carrier tapes after storage in harsh environments. The intermediate layer can contain biomass-derived polyethylene resin. The base layer can contain polyester resin and polyethylene terephthalate. The sealant layer can contain styrene and petroleum resins.

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Laminated packaging material that has a peelable layer to enable easy opening in clean environments without contaminating the contents. The laminate has two layers, one that peels off at 180 degrees angle and low peel strength, and another main layer with high peel strength. The peelable layer contains a biomass-derived resin and has a density of 0.909 g/cm. The main layer has polyolefin content of 82% or more. This configuration allows the peelable layer to be easily removed to expose a clean surface on the main layer for use in clean environments. The biomass resin in the peelable layer suppresses bulging between layers. The low peel strength prevents adhesion of contaminants.

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Insulated packing system for transporting perishables that is environmentally friendly, recyclable, biodegradable, and ideally derived from renewable resources like plants. The packing replaces expanded polystyrene (EPS) foam and aims to have similar thermal protection properties. It uses a base layer folded inside a container and an insulating second layer with block-shaped pockets in some areas. This allows alignment with the container's inner surface for tight fit. Optionally, a sealing layer provides extra insulation and moisture barrier. The packing aims to replace EPS foam which is being banned due to environmental concerns.

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Laminate structure for hand-cut and sealed packages that balances biomass content with sealing and tear properties. The laminate has base, adhesive, barrier, and sealant layers. The sealant layer contains a specific ratio of fossil fuel derived linear low density polyethylene (LLDPE) and plant derived low density polyethylene (LDPE). The LLDPE/LDPE mass ratio is 3:7 to 7:3. This provides biomass content while maintaining tear strength and sealing properties. The sealant layer thickness is 25-40 µm. The laminate enables hand cutting and sealing of packages with reduced environmental impact.

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Sealant composition for packaging applications that provides improved environmental friendliness while maintaining adhesion and easy-opening properties. The sealant composition contains propylene polymer, ethylene polymer, and ethylene/unsaturated carboxylic acid copolymer or its ionomer. The copolymer and ionomer can be made from biomass-derived monomers. The overall composition has a biomass content between 0-100%. This allows using renewable resources in the sealant without sacrificing adhesion and peelability compared to fossil fuel-based sealants.

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Resin composition for sealants in packaging applications that provides improved properties like adhesion and easy opening compared to fossil fuel-derived sealants, while also being environmentally friendly. The composition contains specific ratios of biomass-derived propylene polymer, ethylene polymer, and tackifier resin. It uses biomass-derived structural units in the propylene polymer, biomass ethylene in the ethylene polymer, and optionally biomass-derived tackifier resin. The biomass content is at least 0% and less than 100% by mass. This composition balances sealing strength and ease of opening for packaging materials like laminates and lids.

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