Moisture Resistant Biodegradable Packaging

Compostable lid for sealing coffee capsules that is oxygen barrier, water resistant, tear resistant, and allows percolation. The lid has a multilayer structure consisting of a support, an oxygen barrier layer, and a nonwoven layer facing the capsule rim. The barrier layer prevents oxygen ingress while the nonwoven allows coffee extraction. The layers are adhesively joined. The oxygen barrier can be PVA, EVOH, or PVA/PVA/Kymene. The nonwoven has high porosity.

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A water-soluble bioplastic (WSBP) composed of polyvinyl alcohol (PVA), carboxymethyl chitosan (CMC), nanocrystalline cellulose (NCC), mannitol, lignin, ferulic acid stearyl alcohol, and lactic acid. The bioplastic exhibits a unique balance of mechanical properties, water solubility, and biodegradability, making it suitable for applications in agriculture, medicine, and environmental cleanup. The material's degradation rate can be influenced by environmental factors, and its production involves a hot extrusion process followed by granulation and film casting.

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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 packaging laminate for aseptic food and beverage containers that is recyclable, reusable, and compostable. The laminate replaces aluminum foil in packaging by using a base board made of biodegradable material with filler content up to 30%. The laminate further has a thin vacuum deposited layer on one side for barrier properties. The base board is biodegradable, recyclable, and compostable. The laminate avoids aluminum foil and provides a sustainable, recyclable, and compostable alternative for aseptic food packaging.

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A biodegradable packaging unit for hygiene articles, comprising a disposable hygiene article with an adhesive coating and a packaging sheet made from a mixture of natural fibers and reinforcing fibers, where the reinforcing fibers have a longer length-weighted average fiber length than the natural fibers. The packaging sheet is manufactured by a process involving foam dispersion and draining, and has an air permeability of up to 1000 l/m2/s. The packaging unit enables hygienic carrying and disposal of the hygiene article, while providing protection against contamination and body fluid leakage.

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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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Cellulosic structures for packaging applications, such as paper cups, that combine oil and water barrier properties to improve sustainability and performance. The structures feature a cellulosic substrate coated with an oil barrier layer, positioned between the substrate and a water barrier layer, which prevents both oil and water penetration. This dual-barrier coating enables the production of cups that are resistant to staining and leakage, while maintaining recyclability and repulpability.

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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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Flexible seaweed-based thin films for packaging, produced through solution casting, that are home compostable, marine safe, and biodegradable within months. The films comprise a seaweed-based composition, typically 50-90 wt%, and an agent, typically 0-40 wt%, combined with water. The composition can include agar, alginate, carrageenan, and unprocessed seaweed, while the agent can include glycerin, sorbitol, and other biodegradable additives. The films exhibit desirable properties for packaging, including tensile strength, heat-sealability, and moisture resistance, and can replace traditional single-use plastics.

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A multilayer film for flexible packaging that is compostable and heat-sealable. The film comprises a cellulose ester polymer layer, such as cellulose diacetate, combined with a plasticizer, and a heat-sealable bio-based polyester layer, such as polybutylene succinate. The layers are directly bonded without an adhesive, providing a sustainable and transparent packaging solution.

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A biobased coating kit for imparting water repellency to wood panels and cellulose sheet products, comprising an aqueous dispersion of linear ester waxes derived from renewable raw materials, with a dry matter content of 20-90% by weight, and optionally a vegetable oil component. The ester dispersion exhibits improved barrier properties, stability, and processability compared to conventional paraffin wax dispersions, while providing a biodegradable and non-migratory coating solution for food packaging applications.

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Reclosable flexible packaging for single-dose laundry and dish detergent packets that provides effective humidity protection and sustainability. The packaging uses a multilayer composite sheet made of paper with a water-soluble barrier film. This allows the packets to be stored in a paper-based container that is more sustainable than plastic. The barrier film prevents sticking and dissolution in humid conditions. The paper provides protection against punctures and tears. The reclosable container allows multiple packets to be stored together.

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Biodegradable multilayer film for environmentally friendly packaging that is biodegradable in soil and sea, has excellent barrier properties to oxygen and moisture, and can be easily produced. The film has a biodegradable resin layer made of polyhydroxyalkanoate (PHA) polymers, sandwiched between a substrate layer and a barrier layer. The PHA resin has a heat-sealing strength of 0.5-15 kgf/15 mm. The film has low water vapor and oxygen transmission rates, enabling long-term barrier protection. The barrier layer uses an ethylene vinyl alcohol (EVOH) resin instead of non-biodegradable materials like aluminum or nylon. The film structure allows biodegradability in natural environments without harming the environment, while maintaining barrier properties and lifespan for packaging.

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Water-soluble polymer composition and its use for food packaging applications. The composition comprises a polymer and a salt, where the salt is a conjugate acid-base pair. The conjugate acid-base pair comprises a weak to moderately strong acid and its conjugate base, with the conjugate base having a pKa between 3 and 7. This conjugate acid-base pair acts as a buffer system in the polymer, enabling the polymer to maintain its water solubility and biodegradability while maintaining its mechanical properties.

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Multilayer packaging structure for food applications that provides improved barrier properties while being bio-degradable and compostable. The multilayer has an inner layer made of a crosslinked mixture of water-soluble polymers like PVOH and PCL, which improves oxygen barrier. An outer layer made of a wax like beeswax provides water vapor barrier. This enables a multilayer with both oxygen and water vapor barrier properties using biodegradable materials.

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Compostable packaging material made from seaweed-based compounds, comprising a phycocolloid derived from agar, alginate, carrageenan, or unprocessed seaweed, and a blend of additives including slip agents, anti-block agents, antioxidants, and humectants. The material is processed into flexible films through twin-screw extrusion and blown film extrusion, enabling home compostable, marine-safe packaging products that biodegrade within months in a compost environment.

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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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Paper-based wrap material for packing fatty, oily or greasy products like butter, margarine or cheese, without using aluminum foil. The wrap is made from specific layers: outer layers of water-based natural coatings, an inner paper layer, and optional inner white coatings. The water-based coatings provide oxygen barrier and grease resistance. The paper layer prevents infusion. The absence of aluminum and plastics enables recyclability.

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Biodegradable, edible food service articles like straws, cups, and utensils made from bio-based materials that are compostable and avoid plastic pollution. The articles contain hydrocolloids like alginate, carrageenan, or agar, plasticizers, humectants, fillers, and water. They are processed by extrusion into shapes, optionally cross-linked, and dried. The articles have desirable properties like strength, flexibility, water resistance, and extended shelf life without packaging. The bio-based compositions replace single-use plastics in food service items.

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Sustainable, high-barrier, food-contact packaging made from a formable sheet with improved oxygen and moisture barrier properties. The sheet contains a barrier coating sandwiched between alloy layers. The barrier coating is a premixed solution of polyethyleneimine and polyvinyl alcohol. The alloy layers are blends of polyethylene terephthalate, a polyolefin, and a compatibilizer. The alloy layers provide mechanical strength and formability. The barrier coating provides oxygen and moisture barrier properties. The coating composition and application method are optimized to avoid rupture during thermoforming and container filling.

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