Polymer Blend Processing for Packaging Materials

Preparation method for packaging container that reduces the negative influence on the environment and has good plasticity, strength and durability. The method includes adding polylactic acid, starch-based material and polyhydroxyalkanoate into a stirring container according to weight percentages, heating and stirring at 70-90 deg.C until being uniformly mixed, and then heating and stirring at 50-70 °C until being mixed uniformly.

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Biodegradable packaging material for environmentally friendly alternatives to non-biodegradable packaging like express bags. The material has three layers: an inner layer with PCL-PPC-PCL block copolymer, PBAT, and calcium carbonate; a middle layer with calcium carbonate and PBAT; and an outer layer with talc, PLA, and PBAT. The inner layer has a specific ratio of block copolymer, PBAT, and calcium carbonate. This layered structure provides sufficient strength and biodegradability for biodegradable packaging applications.

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Biodegradable composite material for applications like packaging, toys, and office supplies. The composite is made by blending carbon dioxide-containing polymer (e.g. propylene carbonate copolymer), polyester polymer (e.g. polybutylene succinate), and auxiliaries like antioxidants. The blending optimizes properties like mechanical strength, processability, and biodegradability compared to the base polymers.

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High-strength degradable polylactic acid composite material for packaging applications that provides improved tensile strength compared to regular polylactic acid. The composite contains 60-90 parts polylactic acid, 30-50 parts polybutylene adipate/terephthalate, 0.1-1 part calcium carbonate, and 1-10 parts polyethylene glycol. Adding modified silicon carbide further improves wear resistance but reducing tensile strength. The silicon carbide is modified with lauryl amidopropyl hydroxysulfobetaine and pentaerythritol stearate.

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Biodegradable resin composition for applications like packaging, containers, and straws that combines polyhydroxyalkanoate (PHA) biodegradable polymer with a polybutylene succinate (PBS) polymer. The composition allows tuning physical properties and biodegradability. The PHA content is 0.1-60 wt% of the total resin. Additives like epoxy compounds and fillers like clays, glass fibers, or zeolites are used in amounts up to 10 wt%. This allows customizing properties like tensile strength, elongation, impact resistance, and moldability while maintaining biodegradability. The resulting biodegradable resin has improved physical properties for applications compared to pure PHA and can degrade in soil and oceans.

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Toughened biodegradable polymer composite material for packaging applications like food and pharmaceuticals that has improved toughness, impact resistance, and UV blockage while maintaining high transparency compared to traditional blends. The composite contains polylactic acid (PLA) with blends of poly-3-hydroxybutyrate-co-4-hydroxybutyrate (P3HB) esters and auxiliaries like lubricants and compatibilizers. The P3HB content is 5-40% with >20% 4-hydroxybutyrate. The composite is prepared by mixing and extruding the components. It provides better elongation at break and impact resistance while maintaining high light transmittance for applications like sheets, films, and injection molded products.

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Aqueous biodegradable composition with improved physical properties for making biodegradable products like bags and packaging. The composition contains a blend of biodegradable polymers like PLA, PBS, and PBAT, along with additives like cellulose, starch, compatibilizers, nucleating agents, and plasticizers. This optimized formulation balances biodegradability with mechanical properties like strength and impact resistance. The composition can be used to make products like bags that decompose in water environments but also have useful properties like tear resistance. The composition can be further improved by plasma or UV treatment.

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Biodegradable eco-friendly packaging material made from biodegradable polymers like PBAT and PLA, fillers like calcium carbonate, and titanium dioxide. The composition has impact strength and sealing properties for packaging applications. The fillers improve mechanical properties like impact resistance compared to the polymers alone. The biodegradable packaging material can be manufactured using melt extrusion and sealing processes. The filler particle sizes are optimized for impact strength and sealing suitability. The composition and manufacturing method provide biodegradable packaging with good performance and biodegradability.

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Biodegradable composite material made from biodegradable polymers like PHBH and PBAT, along with natural polymers like squalene gum, for applications like packaging and mulch films. The composite material has improved properties like mechanical strength, thermal stability, and biodegradability compared to using the individual polymers alone. The composite is made by melt blending modified PHBH, PBAT, squalene gum, a modified epoxy resin, plasticizer, and lubricant.

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Composition for packaging materials with reduced oxygen and water vapor permeability, made from bio-based polymers, PHA biopolymers, and plant fibers. The composition contains a bio-based polymer like PLA, a PHA like PHB, and plant fibers like wood or flax. The PHA reduces oxygen and water vapor permeability of the bio-based polymer/fiber mixture. The plant fibers improve mechanical properties. The composition allows packaging with improved barrier properties and recyclability made from renewable materials.

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Toughened biodegradable composite material for applications like packaging and disposable items. The composite contains a blend of biodegradable polyesters with improved toughness and processability compared to pure biodegradable polymers like polylactic acid (PLA). The blend includes a mix of polyesters like PLA and an aliphatic/aromatic copolyester. Starch nanocrystals are added for reinforcement. Functional additives, fillers, and auxiliary agents are used to improve compatibility and processability. The biodegradable polyester blend provides balance between biodegradability and mechanical properties. The starch nanocrystals improve toughness. The functional additives enhance processability. The copolyester component provides biodegradability while maintaining mechanical properties. The resulting composite has better toughness and processability compared to pure PLA.

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Biodegradable composite material with improved properties compared to pure polybutylene adipate terephthalate (PBAT) for applications like packaging. The composite contains PBAT, thermoplastic starch, and modified calcium carbonate in specific weight ratios. The starch and calcium carbonate improve interfacial compatibility between the filler and matrix. The composite has similar or better mechanical properties compared to pure PBAT.

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Highly transparent degradable packaging film for fruits and vegetables that extends shelf life without environmental pollution. The film is made from a blend of biodegradable polymers including PLA, PBAT, PBS, and PPCU. It uses a chain extender called ADR to improve mechanical properties. The film is prepared by cold crystallization to enhance transparency. The blended polymers, chain extender, and crystallization process enable a transparent film with good mechanical properties for packaging fruits and vegetables. The film degrades biologically after use.

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Biodegradable composite material for barrier packaging applications that has good barrier properties and heat resistance. The composite is made by blending biodegradable polymers like polyhydroxyalkanoates (PHA), polymethylethylene carbonate (PPC), and polyglycolic acid (PGA) in specific proportions. This blend provides excellent barrier properties and heat resistance compared to traditional biodegradable polymers like PLA and PBAT. The composite can be used to make biodegradable barrier packaging containers like bottles.

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High-barrier degradable composite packaging material made from biodegradable polymers like PVA, PCL, and PBAT. The material is prepared by melt blending these polymers along with talc and a plasticizer derived from epoxidized soybean oil. The plasticizer improves the film properties like barrier and strength. The blended material is extruded and granulated into pellets to make the composite packaging material.

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Degradable plastic material for blister packaging that is more impact resistant and environmentally friendly compared to traditional plastics. The material is made by blending polylactic acid (PLA) with polybutylene succinate (PBS) and additives to improve properties. The PBS provides flexibility and toughness while the additives enhance impact resistance. The blended material has better impact strength and high temperature resistance compared to PLA alone. The degradable plastic-absorbing material is prepared by mixing the components in specific ratios and processing them.

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Biodegradable composite material made from rice husk nanocellulose and biodegradable polymers like PBAT and PLA. The composite has improved mechanical strength, transparency, and gas barrier properties compared to conventional biodegradable films. The composite allows manufacturing transparent biodegradable films that are microplastic-free. The rice husk nanocellulose provides a sustainable and eco-friendly alternative to synthetic polymers. The composite material can be used in packaging applications where biodegradability is desired.

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A fully biodegradable composite material for applications like medical devices, packaging, and agriculture. The material is made from a specific blend of biodegradable polymers including polylactic acid, polybutylene succinate, polyester, polyhydroxyalkanoate, and starch-based resin. The starch-based resin is prepared separately by mixing starch, starch-grafted polyacrylate, and polyacrylate. The composite material is made by extruding mixtures of the biodegradable polymers and the starch-based resin. The resulting material completely biodegrades in the environment without leaving behind non-biodegradable residues.

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Biodegradable packaging bags with improved antibacterial properties and puncture resistance. The bags are made from a blend of polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), modified cornstarch, hydroxyl-terminated lactic acid oligomers, epoxy-containing vinyl polymers, and additives like carbon nanotubes and silver complexes. The additives provide antibacterial activity while the blended components enhance mechanical strength and puncture resistance compared to single-polymer bags.

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High-strength composite packaging material with improved sealing and burst resistance compared to traditional packaging bags. The material is a multilayer composite made by ultrasonically welding layers of polymers like polylactic acid, polyvinylidene fluoride, polystyrene, trimethylolpropane, and epoxy fatty acid ester. The ultrasonic welding step enhances the sealing strength and air tightness. The composite material has better mechanical properties than single-layer materials like polylactic acid for packaging bags.

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