Edible Packaging for Food and Beverages

A degradable plastic film for food packaging that can biodegrade after use to reduce environmental pollution. The film has multiple layers including an inner layer, middle layer, outer layer, and a decorative pattern layer. The outer layer contains a nano-calcium oxide film, photosensitive coating, and waterproof layer. The calcium oxide film promotes biodegradation, the photosensitive coating triggers degradation when exposed to UV light, and the waterproof layer prevents moisture ingress.

Source

Multilayer film for sealing food containers like coffee capsules that is home compostable, has good oxygen barrier properties, and allows efficient opening by machines. The film is a composite of layers with different materials. The outer layer is made of biodegradable polymers like S2PC-PBS or PBS/PBSA. The inner layer is porous paper with high air permeability. An optional middle layer is more paper to prevent coffee escape. This combination provides sealing, oxygen barrier, and machine compatibility while allowing biodegradability.

Source

Food-grade packaging film made from modified starch that provides improved mechanical, degradation, and antibacterial properties. The film is made by mixing modified corn starch, methyl cellulose, glycerin, triethyl citrate, frankincense extract, and water. The modifications to the corn starch enhance its compatibility with other film components and improve film properties. The film can be prepared by dissolving the ingredients in water, spreading it out to dry, and peeling off the film. The film has better strength, degradation resistance, and antibacterial performance compared to unmodified starch films.

Source

Biodegradable packaging film made from biodegradable materials like polyhydroxyalkanoate (PHA), benzoxazine, and polyvinyl alcohol (PVA). The film has improved oxygen barrier properties and mechanical strength compared to PHA films alone. The addition of benzoxazine reduces cold crystallization temperature and improves compatibility with PHA. PVA further stabilizes crystallization. The film can be prepared by mixing the materials, granulating, and extruding into film.

Source

Environmentally friendly and degradable food packaging film made from starch as the main raw material. The film improves water resistance and mechanical properties by adding ingredients like methylcellulose, glycerin, polylactic acid, and chain extenders. The starch film is also coated with polylactic acid to further enhance water resistance. The film can degrade when composted or buried.

Source

Fully biodegradable food packaging paper that can replace conventional plastic packaging. The packaging paper has layers that provide both water and oil barrier properties. The paper base is coated with a layer to receive oily monomers, followed by a layer of waterproof and oil-repellent resin. The oily monomer layer smooths the surface for the upper layer to adhere. The resin layer blocks water and oil. The layered paper is biodegradable because all materials are biodegradable.

Source

Preparation method for biodegradable biomass multifunctional antibacterial packaging film for sustainable food preservation. The method involves dissolving oxidized starch and indole acid monomers in a solvent like N,N-dimethylacetamide. The solution is stirred, neutralized, and cast into a film. The resulting biomass film has antibacterial properties against E. coli and Staphylococcus aureus, extends food shelf life, and can be prepared using renewable resources.

Source

Rapidly degradable polyvinyl alcohol packaging film that dissolves completely in water within 24-48 hours when immersed. The film is made by printing a water-soluble polyurethane layer onto the surface of the polyvinyl alcohol film. The polyurethane printing ink components include hydroxyethyl cellulose, titanate catalyst, ethylene glycol, film-forming agent, neutralizer, carbohydrate solution, and co-solvent. The ink is printed using gravure printing at specific roller depths and speeds to optimize drying. The film can be stored and then fully dissolves when exposed to water, providing an environmentally friendly and biodegradable alternative to traditional plastic packaging films.

Source

High barrier biodegradable film that provides both oxygen and moisture barrier properties while being biodegradable. The film has layers of cellulose nanofibers, polylactic acid (PLA), and optionally an aluminum oxide deposition layer. The cellulose nanofiber layer enhances barrier properties. Coating the nanofiber dispersion onto the PLA base provides a composite film that can be printed on and adhered to.

Source

Edible coatings for protecting foods like fruits, vegetables, and processed foods from moisture loss, UV damage, and nutrient leaching. The coatings are made from nanocellulose and nano calcium carbonate. The coatings are edible, transparent, and provide barrier properties against water, gases, and UV light. They prevent moisture loss, prevent UV damage, and prevent nutrient leaching in fruits and vegetables. The coatings can be applied before or after harvest to mitigate post-harvest damage. The coatings can also be used to protect frozen foods from drip loss during thawing.

Source

Biodegradable food packaging made from a layered structure of alternating pullulan-nanocellulose and nanocellulose-lignin films. The packaging has improved water stability and mechanical properties compared to single-layer pullulan films. The sandwiched structure with an outer layer of nanocellulose-lignin and an inner layer of pullulan-nanocellulose provides better barrier properties and folding resistance. The biodegradable packaging is fully biobased and can be prepared by alternately stacking the composite films and pressing them together.

Source

Composite packaging bag film made of layers like kraft paper, polyurethane, biodegradable material, and cotton. The layers are formed by pressing. This provides a more environmentally friendly packaging bag that is easier to biodegrade compared to traditional bags made of synthetic materials. The biodegradable layer can be filled with agents like glycerol, sorbitol, citric acid, etc. to enhance biodegradability. The composite structure allows for properties like waterproofness, strength, and biodegradability.

Source

Degradable food packaging film that breaks down into harmless substances after use. The film contains a blend of materials like starch, chitosan, gum arabic, imitation spider silk, polyethylene, polymethylene carbonate, plasticizer, lubricant, crosslinker, photosensitizer, light stabilizer, dispersant, and auxiliary agent. The photosensitizer comprises a mixture of spiropyran, titanium dioxide, and cerium stearate. The film degrades under light due to chain scission and oxidation caused by the photosensitizers. The cerium stearate reduces polyethylene molecular weight for easier biodegradation.

Source

High-performance degradable packaging film that improves degradation speed compared to traditional films. The film has a PLA substrate layer sandwiched between two PVC degradation layers. Cotton sliver layers are embedded between the PLA and the PVC layers. When the film is degraded, the cotton slivers absorb moisture and substances that promote degradation of the PLA and PVC layers. This allows inner surfaces to be degraded as well, accelerating degradation compared to outside-in degradation.

Source

Bio-based fresh-keeping packaging film made from agricultural waste like wood scraps, straw, and fruit peels. The film is prepared by dissolving the biomass components in a low eutectic system like choline chloride/lactic acid. This synergistically dissolves and modifies the biomass while also aiding film formation. Polymers like PVA and plasticizers like glycerin are added to improve film properties. The resulting bio-based film has antimicrobial, UV blocking, and antioxidant properties for fresh produce preservation.

Source

Packaged food concentrates, like soup bases, where the package has an edible primary package in contact with the concentrate and a recyclable secondary package. The edible primary package provides barrier properties to protect the concentrate. The edible primary package uses materials like alginate, gellan gum, wax, chitosan, or pectin to provide barrier properties like oxygen, water, and grease resistance. This allows using edible packaging for long-shelf-life concentrates without touching by consumers. The secondary recyclable package protects the edible primary package from being touched.

Source

Food-grade degradable plastic packaging film with improved toughness and ductility compared to existing degradable films. The film is made by blending specific ratios of polylactic acid (PLA), thermoplastic starch (TPS), and a copolymer of butylene adipate and butylene terephthalate (CPBAT). The film production process involves drying the PLA to reduce moisture content, then mixing the blended materials at high speed. This balances the properties of PLA for strength, TPS for biodegradability, and CPBAT for ductility to create a film that degrades in the environment but doesn't easily crack or break.

Source

Biodegradable frozen food packaging bags made from bioplastic materials that degrade in the environment. The bags have an outer layer with PBAT and modified PLA, an inner layer with PBAT and silicone, and a middle layer with paper. The bioplastic layers provide freezing functionality while the paper layer has a paper-like appearance. The bags degrade faster than conventional plastics due to the biodegradable bioplastic components.

Source

Biodegradable film for eco-friendly packaging that balances properties like flexibility, transparency, and thermal bonding strength. The film uses a blend of polylactic acid (PLA) and vinyl acetate (VAc) copolymers. The PLA provides rigidity and transparency while the VAc copolymer adds flexibility. The film has thermal bonding strength over 4 N/15mm when heat sealed. This allows adhesive bonding without additional adhesives. The film is manufactured by extruding and stretching the blended resins.

Source

Biodegradable multilayer film for eco-friendly packaging that degrades in soil and oceans, has excellent barrier properties against moisture and oxygen, and can be produced efficiently. The film has a base layer, a biodegradable resin layer made of polyhydroxyalkanoate (PHA) resin, and optionally a barrier layer. The PHA resin layer has 0.5-15 kgf/15mm thermal bonding strength, 3 g/m2-day water permeability, and 10 cc/m2-atm-day oxygen permeability. This allows biodegradability without aluminum or nylons while maintaining barrier properties. The multilayer film can be manufactured by melt-extruding the PHA resin directly onto the base layer.

Source