Compostable Biodegradable Packaging

Compostable packaging material for containers, comprising a fibrous sheet coated with a coextruded polymer layer structure, wherein the innermost layer is polybutylene succinate (PBS) with a coating weight of at least 2 g/m², and the outermost layer is polyhydroxyalkanoate (PHA). The PBS innermost layer ensures sufficient adhesion to the fibrous sheet, while the PHA outermost layer provides water vapor barrier properties and improved runnability. The material is suitable for manufacturing compostable containers, such as disposable drinking cups, and can be used for packaging a wide range of food products.

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Biodegradable polymer composition for packaging applications that provides a sustainable alternative to petroleum-based plastics. The composition is a blend of biodegradable polymers like polylactic acid (PLA), polyhydroxyalkanoates (PHA), polyvinyl alcohol (PVOH), polybutylene adipate terephthalate (PBAT), and polybutylene succinate (PBS) along with fillers like cellulose fibers and calcium carbonate. The blend is designed to achieve optimal mechanical strength, flexibility, and biodegradability for packaging applications like food, beverage, personal care, agriculture, and industrial packaging. The use of biodegradable polymers significantly reduces environmental footprint compared to petroleum plastics, the composition is made from renewable resources, and the inclusion of fillers and plasticizers makes it economically viable.

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Biodegradable composites for packaging applications made from renewable sources like seaweed extracts, nanomaterials, and biomass. The composites contain an Ulva seaweed polysaccharide, a nanomaterial like bionanoparticles, a non-Ulva biomass like red seaweed extract, and a non-phthalate plasticizer. The composites can be used to create biodegradable articles like films and coatings for packaging that have improved properties compared to using each component alone.

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A biodegradable biaxially oriented film with improved mechanical properties, flexibility, transparency, and noise levels, along with enhanced biodegradability under mild composting conditions. The film comprises a multilayer structure with alternating layers of polylactic acid (PLA) and polyhydroxyalkanoate (PHA) polymers, where the PHA content is 20% or more of the total weight of the PLA and PHA layers. The film is prepared by melt-extruding the PLA and PHA layers, laminating them, and then biaxially stretching and heat-setting the laminate to produce the final film.

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Biodegradable resin composition and film with improved barrier properties, comprising thermoplastic starch, a biodegradable polymer with a melt flow index of 2.5-20 g/10 min, and a plasticizer, wherein the biodegradable polymer content is 30% or less of the total composition weight. The composition enables the formation of biodegradable films with enhanced barrier properties, suitable for packaging applications.

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Multi-layer packaging material for eco-sustainable and high-barrier food packaging, particularly for confectionery products. The packaging has a biodegradable base film made of bio-based polymers like PBS, PHA, or vegetable proteins. It also contains natural fillers like cellulose nanofibers and phyllosilicates. The fillers improve barrier properties and mechanical strength. The packaging has a heat-sealable barrier layer on the inside made of biodegradable polymers like PHBH and PBS. This provides excellent oxygen, water vapor, and aroma barrier while still allowing compostability and biodegradation. The multi-layer structure combines biodegradability, compostability, barrier properties, and mechanical strength for eco-friendly confectionery packaging.

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Biodegradable composite material for packaging applications that is sustainable and compostable. The composite material is made by blending lignin, a biodegradable polymer like polybutylene succinate, and a fibrous material like hemp. The lignin improves the biodegradability and sustainability of the packaging, while the biodegradable polymer provides processability. The fibrous material adds strength. The composite material can replace non-biodegradable plastics like polyethylene in packaging applications.

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Biodegradable barrier film for packaging applications that has improved oxygen barrier properties and transparency compared to existing biodegradable films. The film is made by alternately laminating layers of an aliphatic polyester like polylactic acid and a polyvinyl alcohol. This structure provides both oxygen barrier and transparency. The layers are melt extruded, alternated, and then biaxially stretched and heat set to form the film.

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Biodegradable multi-layer sheets for packaging applications that provide improved properties like barrier, strength, and processability compared to existing biodegradable sheets. The sheets have at least three layers, with an inner core layer made of thermoplastic starch (TPS) blended with another polymer. The outer layers are made of polybutylene succinate (PBSA) and/or polybutylene adipate terphthalate (PBAT). The TPS core layer improves processability and mechanical strength, while the PBSA/PBAT outer layers provide barrier properties. This composite layer structure provides a balance of properties for packaging applications like food packaging.

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Biodegradable multilayer film for packaging that balances mechanical, biodegradability, and optical properties. The film has separate layers with different compositions. Layer A contains a biodegradable polyester or polyvinyl alcohol. Layer B contains fillers like talc, carbonate, and isocyanate-containing crosslinkers. The film structure is A/B or A/B/A, where the A layer thickness is less than B. This allows high mechanical properties, biodegradability, and optical clarity compared to homogeneous films.

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A multilayer biodegradable film with improved uniformity, flexibility, and noise level compared to existing biodegradable films. The film has alternating layers of a polylactic acid-based polymer and an aliphatic polyester or aliphatic-aromatic copolymerized polyester. The uniformity of the polylactic acid layers is optimized to 0.2 μm or less. This reduces thickness variations between layers. The film has good balance of properties like flexibility, transparency, and noise level compared to films with only polylactic acid layers. It also has better interlayer adhesion and processing.

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Biodegradable packaging material comprising a substrate layer and a biodegradable resin layer, wherein the biodegradable resin layer comprises a polyhydroxyalkanoate (PHA) resin, the biodegradable resin layer has a heat-sealing strength of 0.5 to 15 kgf/15 mm, and the biodegradable multilayer film has a water vapor transmission rate of 3 g/m2 atm day or less and an oxygen transmission rate of 10 cc/m2 atm day or less.

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A biodegradable compostable composite film with improved heat sealability and compostability. The film comprises a core layer of polylactic acid (PLA) and a non-PLA modifier, and a heat sealant layer of amorphous PLA and a modifier with a low glass transition temperature. The film has a seal initiation temperature below 176°F, a plateau seal strength above 800 g/in, and a heat sealing temperature window of 152-240°F. The film is suitable for packaging applications and can be composted at home.

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Biodegradable and compostable containers made from a material that can be composted at home. The container material is a composite of polyhydroxyalkanoate (PHA) biopolymer (90-98%) and titanium dioxide (1-10%). The PHA biopolymer is a renewable, biodegradable polymer derived from sources like corn or potato starch. The titanium dioxide provides whiteness but other compostable pigments could be used for color. This container material can be composted in home composting environments, unlike some other biodegradable packaging that requires industrial composting facilities.

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Paperboard structures with enhanced processing characteristics through the incorporation of talc into poly(butylene succinate) and poly(butylene succinate-co-adipate) coatings. The talc, a mineral filler, improves extrudability of these polymers while maintaining their processing characteristics. The coating composition is formulated to balance polymer-to-talc ratios for optimal processing and performance, including heat-sealing properties.

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Most of the conventional polymeric materials are not easily degraded because they are resistant against microbial attack, and they accumulate in the environment and represent a significant source of environmental pollution. Packaging materials based on environmentally friendly polymeric materials might be a solution to help control the environmental pollution and resolve other problems posed by non-degradable synthetic polymers. Biodegradation and composting techniques have been accepted worldwide as one of the most promising technologies to determine the biodegradability of polymeric materials. Scientific and technological development in the field of biodegradation and biopolymers has since then progressed significantly, and today, verified biodegradable plastic products are available in most of the larger shops. In this chapter, the issue of degradable polymers and plastics, with particular emphasis on the development of bio-based materials and their biodegradation, is discussed in detail.

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Compostable articles like packaging that are both durable and biodegradable. The articles contain biodegradable polymers like polybutylene succinate (PBS) along with hydrophobic agents. This composition provides water resistance and durability. The articles can be made by coating one side of a PBS film with a hydrophobic polymer and the other side with a PBS blend. This allows sealing the edges when making bags, pouches, or envelopes. The compositions can also have fillers and coatings.

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Currently, the food industry is thriving with immense economic growth but concurrently facing irredeemable ecological damage. Packaging waste management has become a major global concern in recent years since it makes up around 65% of all solid waste generated worldwide. Approximately, 80% of plastic wastes are directly discarded in the environment or collected in landfills. So, there is an exigency for exploring the concept of sustainable packaging with new principles to reduce pollution from plastic waste. Food biowastes are considered a serious socioeconomic and environmental menace, and so their systematic management is essential. These biowaste-based materials including agricultural residues can be used for developing innovative packaging materials (biodegradable and compostable) in order to replace conventional packaging materials like petrochemical plastics as they emit zero greenhouse gases and can be recycled with the emission of negligible landfill waste. Bio-based and biodegradable packaging materials including biopolymers, biocomposites, and edible films are considered ne... Read More

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Compostable single-serve food packaging adapted for liquids like sauces that can decompose in compost along with the contents. The packaging has a compostable molded tray with a barrier film or impregnated barrier, and a peelable lid sealed around the opening. The molded tray can be made of compostable fibers, and the barrier can be applied by coating or impregnation. This allows compostable packaging for liquids like sauces that can decompose in compost along with the contents. The peelable lid enables easy opening and disposal. The compostable materials enable the entire package to decompose in compost.

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Compostable cornstarch-based packaging that can contain items without using petrochemical plastics. The packaging is made from compostable materials that biodegrade in composting environments. This reduces environmental pollution compared to conventional plastic packaging that often ends up in landfills. The cornstarch-based compostable packaging aims to provide a more sustainable and eco-friendly alternative to traditional packaging materials.

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