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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Degradable renewable packaging material made from biodegradable polymers like thermoplastic starch, wood fiber, and bamboo fiber, along with additives like PVA, nano silica, compatibilizer, lubricant, antioxidant, and plasticizer. The material is prepared using a sequence of mixing, reacting, kneading, extruding, and film blowing equipment to obtain a high-quality, biodegradable packaging material that can be used in environments where conventional plastics cannot degrade naturally.

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Completely biodegradable polylactic acid (PLA) composite material for packaging applications. The composite contains a mixture of PLA and polybutylene adipate terephthalate (PBAT) along with fillers, stabilizers, lubricants, and plasticizers. The PLA provides biodegradability while PBAT improves toughness. Compatibilizers, chain extenders, antioxidants, fillers, stabilizers, lubricants, and plasticizers are added to optimize properties like strength, impact resistance, and processability. The composite has good biodegradability, strength, and toughness for packaging applications.

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Titanium dioxide modified biodegradable composite material for applications like food packaging and medical supplies that provides combined benefits of biodegradability, antibacterial properties, and cost-effectiveness. The material is made by mixing biodegradable polymers like PBAT/PLA, a compatibility agent, plasticizer, thickener, and nano-sized anatase titanium dioxide. The titanium dioxide provides UV protection and antibacterial properties, while the biodegradable polymers enable biodegradability. The composite material can be processed into films or bags for applications like food preservation and medical device packaging.

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Degradable packaging material that is fully biodegradable and can replace non-biodegradable plastics like PP and PE. The packaging material is made by blending degradable polymers like PBAT and PLA, catalyst, chain extender, compatibilizer, lubricant, and water. The specific ratios are 100 parts PBAT, 60-80 parts PLA, 20-30 parts catalyst extender, 10-15 parts chain extender, 20-24 parts titanium catalyst, 14-16 parts compatibilizer, 10-12 parts lubricant, and 20-40 parts water. The blended polymers are melted and processed to create a fully degradable packaging material that can replace traditional plastics like PP and PE

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Biodegradable composite resin with enhanced physical properties for applications like packaging, hygiene products, and agriculture. The composite contains a blend of polylactic acid (PLA) and polybutylene adipate terephthalate (PBAT) biodegradable polymers, modified starch or thermoplastic starch, isosorbide natural plasticizer, and nanochitin or nanocellulose reinforcing agent. The composition provides desirable physical properties like heat resistance and durability for competing with petroleum-based plastics.

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Biodegradable packaging material for food items that can be applied as a coating to substrates like biodegradable plastics. The material is a liquid when applied and forms a linked network afterwards. It provides water vapor and oxygen barrier properties for food packaging applications. The biodegradable material is made from two polymers, ulvan and cellulose acetate butyrate, that can be applied separately and linked later. Additives like plasticizers, stabilizers, surfactants, and preservatives can be used. The linked network provides strength and durability to the coating.

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Biodegradable food packaging material made from a blend of polyvinyl alcohol, modified wood flour, vegetable starch, dioctyl maleate, modified castor oil, nano calcium carbonate, nano diatomaceous earth, plasticizer, and basalt fiber. The material is prepared by extrusion and film blowing. The modified wood flour is made by treating wood powder with sodium hypochlorite. The modified castor oil is prepared by dissolving sodium citrate in water, mixing it with attapulgite and castor oil, and heating. This biodegradable packaging material aims to provide a sustainable, compostable alternative to traditional plastic packaging for food products.

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Polylactic acid resin composition for packaging materials with improved properties like elasticity, moisture resistance, and heat resistance. The composition contains a polylactic acid resin with hard segments made of polylactic acid repeating units and soft segments made of polyvinyl polyol repeating units connected through urethane or ester bonds. The composition also has biomass carbon content of at least 60% and an antioxidant. The composition provides eco-friendly packaging materials with better elasticity, moisture resistance, and heat resistance compared to traditional polylactic acid resins.

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An environmentally friendly composite material for packaging that improves strength and durability compared to conventional biodegradable plastics. The composite material is made by blending polylactic acid, corn starch, wood flour, glycerin, lubricant, and additives like maleic acid tincture and acetone. The blending process involves reacting the corn starch with maleic acid to esterify it, then mixing with the other components and extruding to form the composite material. This improves compatibility and interfacial bonding between the polylactic acid and corn starch compared to direct blending, resulting in better mechanical properties and reduced brittleness.

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A method for preparing high-strength biodegradable plastic packaging bags that combines multiple biodegradable polymers to improve strength and biodegradability. The method involves mixing low-density polyethylene (LDPE), polycarbonate, polytetrafluoroethylene, and polylactic acid in a reactor to fully branch the polymers. Nano-titanium dioxide, glass fiber, and citric acid are added to reinforce the mixed resin. This provides a biodegradable packaging bag that is stronger and more heat-resistant than LDPE alone, while still fully biodegrading without residue due to the biodegradable polymers.

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Fully degradable high-barrier composite material for flexible packaging that combines biodegradable polyesters like PBAT, PCL, and PLA to create a double-layered structure. The inner layer is made of PBAT and PCL for barrier properties, while the outer layer is PBAT and PLA for strength. The double-layer co-extruded composite balances flexibility, strength, and barrier performance. It uses biodegradable polyesters for a sustainable alternative to traditional plastics. The composite can be used for applications like shampoo and cream packaging.

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Completely degradable, transparent and toughened polylactic acid (PLA) material for applications like packaging, medical devices, and textiles. The PLA material is toughened by adding a specific amount of degradable ethylene-vinyl acetate copolymer. This copolymer improves impact strength and elongation while still allowing complete biodegradation. The PLA material composition includes 60-85% PLA, 5-20% ethylene-vinyl acetate copolymer, 5-15% plasticizer, 0-1.5% chain extender, and 0-3% nucleating agent. The copolymer, plasticizer, and chain extender are mixed and extruded at temperatures to prepare the PLA resin.

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Biodegradable aliphatic polyester resin composition for packaging materials that reduces costs and browning during processing. The composition contains an aliphatic polyester resin, starch, a water-soluble polymer, an epoxy compound, and an antioxidant. Mixing the hydroxyl and carboxyl groups of the polyester with the hydroxyl groups of the starch increases compatibility. The water-soluble polymer further enhances starch dispersion. The composition is kneaded at high shear rates to prevent browning during processing. The starch content is 10-50% of the polyester. The water-soluble polymer is 0.5-5% mass concentration.

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Degradable packaging material that can break down in the environment. The material is a blend of biodegradable polymers like polylactic acid, biodegradable polyester, and polyhydroxyalkanoate, as well as natural fibers, modified starches, and clay. The blend is prepared by mixing the components and extruding into packaging. The degradable packaging has applications in reducing plastic waste and pollution.

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Biodegradable packaging material with improved properties compared to conventional biodegradable plastics. The material is made by blending specific ratios of components like PBAT, PLA, starch, fillers, glycerin, and additives like citric acid and epoxidized soybean oil. The blending recipe provides better elongation, degradability, and cost compared to pure PBAT. The material aims to address the limitations of existing biodegradable plastics like low elongation, slow degradation, and high cost.

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Biodegradable food packaging made from moulded pulp material containing biodegradable polymer like polybutylene succinate (PBS) to replace the conventional plastic film layers. The PBS mixed into the pulp itself eliminates the need for separate plastic barriers, improving sustainability and recyclability. The biodegradable pulp packaging can hold food items like eggs, tomatoes, etc. without the need for plastic film liners. The PBS in the pulp provides barrier properties and reduces surface roughness. Adding further biodegradable polyesters like PHB, PHA, PCL, PLA, PGA, and PHBV further improves properties.

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A biodegradable resin composition containing aliphatic polyester resin and starch for making packaging materials that reduces cost compared to pure biodegradable polyesters. The composition has 10-100 parts of starch, 10-100 parts of aliphatic polyester, and 10-50 parts of a water-soluble polymer aqueous solution. The starch is mixed with the polyesters using an extruder and water as a solvent instead of oxidizing the starch. The water-soluble polymer increases affinity between the starch and polyester. This allows stable dispersion and uniform blending of the starch in the molten polyester. The resulting composition reduces cost compared to pure biodegradable polyesters.

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Toughened, hydrolysis-resistant biodegradable polymer blend material for applications like biomedical devices and packaging. The blend contains polylactic acid (PLA), polybutylene succinate (PBS), polycaprolactone (PCL), PBAT, octadecylglycidyl ether, and hydrazine. The blend has improved toughness compared to PLA alone while still being biodegradable. The octadecylglycidyl ether and hydrazine toughen the blend by reacting with the PLA chains. The PBS, PCL, and PBAT provide flexibility and hydrolysis resistance.

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High-barrier compostable green plastic composite structure for packaging applications that combines the gas barrier properties of conventional plastics like EVOH and PA with the compostability of biodegradable polymers like PLA. The composite structure has a barrier layer made of EVOH or PA sandwiched between biodegradable layers of PLA/PBSA. An adhesive layer made of modified polyolefin binds the biodegradable layers to the barrier layer. This provides excellent gas barrier, compostability, and processing performance compared to individual components. The composite structure can be prepared by coextrusion or dry-replication of the layers, or by injection molding the mixed components.

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High barrier biodegradable packaging material with excellent mechanical properties, barrier properties, and degradability. The material is made by blending polyethylene 2,6-naphthalate, polycarbonate, polycaprolactone, ethylene-vinyl alcohol copolymer, sodium montmorillonite, nanometer titanium dioxide, chitin, hydroxypropylmethylcellulose, erucic acid amide, n-butyl stearate, castor oil, and glycerol. The blended components are extruded into the packaging material. The material provides high oxygen and moisture barrier, mechanical strength, and biodegradability.

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Biodegradable polymer composition with improved properties for packaging applications by combining polylactic acid (PLA) and polyhydroxybutyrate (PHB) polymers. The composition contains a specific ratio of PLA and PHB, along with a plasticizer and an additive to enhance strength and elongation. The additive is added in a small amount to the polymer blend. This unexpectedly forms a biodegradable polymer composition with significantly higher strength and elongation compared to the individual polymers.

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A biodegradable super tough polylactic acid (PLA) blend material for applications like packaging and automotive interiors. The blend is made by reactively blending PLA with two biodegradable modifiers, polyadipate/butylene terephthalate (PBAT) and a copolymer of ethylene, acrylate, and glycidyl methacrylate (E-BA-GMA). A reactive compatibilizer is added to improve interphase adhesion. The blend provides significantly enhanced toughness compared to PLA alone.

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Biodegradable plastic material with improved properties for packaging applications. The biodegradable plastic is made by combining biodegradable masterbatch, modified starch, polypropylene copolymer, glycidyl methacrylate, carbon black, glass fiber, vegetable fiber, fatty acid glycol, stearic acid, antioxidant, and MPA. This composition provides biodegradability, impact resistance, oxidation resistance, and corrosion resistance for packaging materials. The biodegradable masterbatch is a mixture of PLA and PHB polymers crosslinked together.

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A mixture of polymers including polylactic acid and polyethylene terephthalate with improved properties like softness, flexibility, elongation, and malleability. The mixture is useful for making packaging materials like bottles, bags, and wraps. The blend has specific viscosity, polymer ratios, and processing conditions to optimize the properties. It provides a balance of strength, durability, and processability compared to pure polymers. The blended packaging has improved performance and properties like elongation, malleability, and flexibility compared to pure polymers like PLA or PET.

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