Food packaging currently generates over 82 million tons of waste annually, with less than 14% successfully recycled due to material complexity and contamination. Multi-layer packaging materials, while effective for food preservation, create fundamental barriers to recycling as adhesives and mixed polymers cannot be efficiently separated in existing recycling streams.

The central challenge lies in developing packaging solutions that maintain food safety and shelf life while using materials that can be processed in single-stream recycling systems.

This page brings together solutions from recent research—including mono-material polyester designs, fiber-composite alternatives, barrier adhesives for all-polyethylene laminates, and simplified paper-based structures with targeted barrier properties. These and other approaches focus on practical implementations that work within existing recycling infrastructure while meeting food safety requirements.

1. Corrugated Cardboard Housing with Integrated Thermoplastic Liquid Container and Apertures for Neck Sealing

CARGILL INC, 2024

Integrated liquid container system for storing and transporting liquids like edible oil that has a corrugated cardboard housing to reduce weight and cost compared to fully plastic containers. The liquid container inside is made of recycled or virgin thermoplastic like PET. The cardboard housing has apertures for the container neck to seal in. This allows using a lighter cardboard outer shell with the same volume container. It also allows recyclability of the container by separating the cardboard from the plastic. The cardboard reduces weight compared to a fully plastic container. The cardboard is also more recyclable than plastic.

2. Mono-Polyester Food Package with Peelable and Fixedly Attached Lid

GPI FLEXIBLES AB, 2024

Food package with improved recyclability by using a single polyester material throughout. The package has a base and a peelable lid that are sealed together. The lid is fixedly attached to the base around part of the edge. The entire package is made of mono polyester material, with at least 95% being polyester. This allows easier recycling since the base and lid are both made of the same material. The lid can be peeled off and recycled with the base since they're both polyester.

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3. Single Material Packaging with Elastomer-Enhanced Base and Polyolefin Barrier Layers

YOULCHON CHEMICAL CO LTD, 2024

Single material-based packaging material with improved barrier properties and recyclability. The packaging material has layers including a base layer with an elastomer, a barrier layer, a first film layer of polyolefin, and a heat-resistant layer with a polyester binder. The elastomer in the base layer allows easy sealing. The polyolefin layers provide barrier properties against oxygen and moisture. The heat-resistant layer prevents wrinkling during processing. The single material composition allows recyclability compared to composite materials.

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4. Recyclable Packaging with Water-Permeable and Waterproof Layered Structure

WESTROCK MWV LLC, 2024

Recyclable packaging for frozen food that allows controlled water transfer and absorption to prevent freezer burn and make opening easier, while also being fully recyclable. The packaging has a recyclable paper substrate with waterproof layers on one side and a permeable layer on the other side. The permeable layer allows controlled amounts of water and oxygen transfer through it, preventing freezer burn on the frozen food inside. The paper and coatings are all recyclable.

5. Multilayer Polyethylene and Hydrocarbon Resin Film with Defined Density Middle Layer for Thermoforming Applications

AMCOR FLEXIBLES NORTH AMERICA INC, 2024

Recyclable high-performance packaging films suitable for thermoforming into packaging components like trays and cups. The films are made from layers of polyethylene, high-density polyethylene, and a hydrocarbon resin. The middle layer between the polyethylene layers has a density range of 0.92-0.97 g/cm3. This allows wider temperature windows for thermoforming without sagging. The films are free from polyester, EVOH, and nucleating agents to improve recyclability. The thermoformed components made from these films can be recycled alongside HDPE containers, unlike multilayer films. The packaged products formed from these components can also be recycled.

6. High-Barrier Paper Packaging with Aluminum-Plated Cellulose Film

AMCOR TECH RESEARCH & DEVELOPMENT CO LTD, AMCOR TECHNOLOGY RESEARCH & DEVELOPMENT CO LTD, 2024

A household compostable and degradable high-barrier paper packaging that provides both biodegradability and barrier properties. The packaging uses an aluminum-plated layer compounded onto a cellulose film. The aluminum plating provides barrier properties against oxygen and moisture. The cellulose base is compostable and degradable. The aluminum plating process can be vacuum or transfer aluminum plating to adhere the aluminum to the cellulose. This allows creating a compostable and degradable packaging with improved barrier properties compared to plain cellulose.

7. White Pigment and Filler Blend Coating Composition with Deinkable Binder for Light-Blocking Containers

SIEGWERK DRUCKFARBEN AG & CO KGAA, 2024

Coating composition for light-blocking containers like milk bottles that allows better recycling compared to existing light-blocking coatings. The composition contains a blend of a white pigment and a filler, a binder like nitrocellulose, and optionally an organic solvent. The white pigment and filler absorb/reflect light in the UV/VIS range to block it. This allows using less opaque containers that can be recycled with like-color containers. The composition is deinkable in alkaline solutions to enable post-consumer recycling.

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8. Multilayer Packaging Material with Cellulosic and Casein-Based Layers

LACTIPS, 2024

A recyclable packaging material that can be used in food applications and is easily produced. The packaging consists of multiple layers, with one layer being made from cellulosic material like paper and another layer containing casein (milk protein) or casein salts. The cellulosic layer provides recyclability, while the casein layer improves barrier properties. This allows reusable packaging that can be composted or recycled after use. The layers can be assembled by coating, extrusion, or lamination.

9. Multi-Layer Flexible Packaging with Nanoclay Barrier in BVOH Matrix and Aluminum-Paper Structure

SOC DES PRODUITS NESTLE S A, Nestlé Products Company SA, 2024

A multi-layer flexible packaging material for dry foods like confectionery that balances improved barrier properties, recyclability, and marine degradation. The packaging has a paper layer, aluminum layer, nanoclay barrier coating layer, and sealing layer. The nanoclay barrier layer between the paper and aluminum provides barrier improvement without plastic. The nanoclay dispersed in a BVOH copolymer matrix. The sealing layer prevents moisture ingress. The paper layer enables recyclability. The barrier and sealing layers protect food. The nanoclay barrier degrades in marine environments.

10. Multilayer Paper-Based Packaging with Metallized Barrier and Polymer Coatings

SOC DES PRODUITS NESTLE S A, SOCIETE DES PRODUITS NESTLE SA, 2024

Recyclable paper-based packaging material with high barrier properties that can be recycled in the paper stream. The packaging structure has multiple layers, starting from an outer polymer coating, followed by a paperboard layer, an adhesive layer, a barrier metallized paper layer, and an inner polymer coating. The barrier metallized paper layer has a thin metallic coating on a paper substrate. The paperboard, adhesive, and inner/outer polymer coatings allow recycling the structure in the paper stream. The barrier properties come from the metallized paper layer and the inner/outer polymer coatings.

11. Multi-Layer Polyolefin Packaging Laminate with Calcium Carbonate-Infused Printable Outer Layer and EVOH Barrier

BMSI, Inc., 2024

Packaging laminate for food products that meets USDA and FDA requirements for extending shelf life, being recyclable, and having high barrier properties. The laminate has two or more layers of polyolefins like HDPE, LDPE, LLDPE, and PP. The outer layer is a printable HDPE with calcium carbonate. The inner layer is HDPE, LLDPE, and LDPE with an EVOH barrier and compatibilizer. This allows sealing, recyclability, and barrier properties for food packaging. The laminate can also have a middle HDPE layer.

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12. Container with Circumferential Sidewall Ribs and Base Structure for Enhanced Structural Stability

CO2PAC LTD, 2024

Hot fill container design with improved strength and shape stability for hot-filling beverages in containers with high recycled content. The container has sidewall ribs that resist longitudinal stretching during filling and compression during cooling. The ribs also provide resistance to deformation from internal pressure and vacuum forces. The ribs extend around the circumference and have recessed channels that prevent paneling. This allows using more recycled PET without compromising shape. The base structure has features to resist longitudinal expansion during filling. The container design mitigates distortion issues with lightweight, high recycled content containers that are common in hot filling.

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13. Biodegradable Laminate with Biocarbon-Enriched Paper and Bioplastic Film Layers

CJ CHEILJEDANG CORP, 2024

Eco-friendly laminate and packaging material with improved biodegradability, oxygen/moisture barrier properties, and sealing performance. The laminate has a paper layer with high biocarbon content (85%) and strength (8 MPa), and a thin biodegradable film layer made of bioplastic like PHA. The film layer has optimized biocarbon content (3-50%) and thickness (8-70 μm) for barrier and sealing properties. The laminate structure allows recyclability, biodegradation in soil/oceans, and compostability while maintaining packaging functionality. The laminate can be used as a sustainable alternative to conventional laminates and packaging materials for products like food, cosmetics, and pharmaceuticals.

14. Single-Material High-Barrier Polyethylene Composite Paper with Multi-Layer Structure

CHEN CHAO, 2024

Recyclable single-material high-barrier polyethylene composite paper for packaging boxes that can replace aluminum foil and be combined with cardboard. The composite paper has a paper base, outer PE layers, and an inner multi-layer composite layer containing PE, PVA, and PE. The composite layer thickness is 30-70um and the oxygen permeability of the PVA layer is less than 1cm3/(m2·24h·0.1MPa). This allows recyclability by separating the composite paper for recycling instead of composite materials. The composite paper can be used in liquid packaging boxes instead of aluminum foil.

15. Biodegradable Laminate with Paper and Biodegradable Film Layers Featuring Specific Biocarbon Content and Barrier Properties

CJ CHEILJEDANG CORP, 2024

Laminate and packaging material that is highly biodegradable in soil and seawater, recyclable, and has improved barrier properties. The laminate has a paper layer and a biodegradable film layer with optimized biocarbon content. The biocarbon content of the paper layer is 0.01-0.25% and the biocarbon content of the film layer is 0.25-0.5%. This balance allows the laminate to decompose easily in soil and seawater while maintaining barrier properties. The laminate can be manufactured by coating a biodegradable resin on a paper substrate. The laminate can further have an adhesive layer between the paper and film layers. The packaging material can include additional layers like a coating for printability and anti-fouling.

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16. Method for Forming Single-Layer Fiber Composite Containers via Moisture-Enhanced Molding Process

SIG SERVICES AG, 2024

A method of producing containers like beverage bottles with a simple, environmentally friendly process that avoids complex multi-layer laminates. The method involves shaping a container blank made of a single-layer fiber composite material. The blank is moistened with water to soften the fibers and then pressed between molds to form the container shape. The moisture content of the blank is lower than the final container wall. This reduces the blank thickness during shaping and prevents wrinkles or burrs on the container opening. The resulting container has a single-layer wall made of a molded fiber composite material. It avoids complex multi-layer laminates with different polymers and aluminum barriers. The molded fiber composite material can be made from recycled fiber sources like chemical or mechanical pulp. The containers are lightweight, dimensionally stable, and have minimal environmental impact. The molded fiber composite material can also be used to line

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17. Ethylene-Based Laminate Films with Barrier Adhesive Layer for Enhanced Gas Barrier Properties

DOW GLOBAL TECHNOLOGIES LLC, 2024

Recyclable, all-polyethylene laminate films for flexible packaging with improved gas barrier properties. The films have an ethylene-based barrier adhesive layer between two ethylene-based film layers. The barrier adhesive allows gas barrier without needing non-recyclable materials like metal or PET. The ethylene-only films provide recyclability. The barrier adhesive can be solvent-based, water-based, or solventless. The adhesive can contain isocyanate and an isocyanate-reactive component like a hydroxyl-terminated polyester. This allows gas barrier without adding non-recyclable materials. The ethylene-only films can have different densities and melting points to optimize properties.

18. Method for Producing Sealed Vessels Using Low-Hardness Polymer Sealing Elements Applied at Reduced Temperatures

SILGAN HOLDINGS INC, 2023

A method to produce sealed vessels for storing moisture-sensitive materials like powdered food that can be recycled easily. The method involves using a vessel closure with a sealing element made from a polymer composition having a maximum Shore A hardness of 80. The sealing element is applied to the vessel mouth at a temperature of 80°C or less. This allows recycling of the vessel and closure without issues. The vessel can also be filled with an inert gas like nitrogen before closing to prevent oxygen ingress. The method enables better recycling of sealed vessels compared to traditional closures with films, as the closure material can be easily recycled along with the vessel.

19. Method for Forming Recyclable Paper Tubular Packaging Using Existing Machinery with Glue-Sealed Intersections

SOC DES PRODUITS NESTLE S A, SOCIETE DES PRODUITS NESTLE SA, 2023

A method to produce hermetically sealable paper packaging for food products that can be fully recycled and uses existing packaging machinery with minimal modifications. The method involves folding a flat paper sheet into a tube shape, sealing the longitudinal seam, filling it with product, then sealing the transverse seams. Glue is applied at the intersection points of the seams to prevent gaps. The glue dries before sealing. This allows recyclable paper packaging that can be produced on existing machines with simple modifications like a glue applicator.

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20. Laminated Sheet Member Container with Detachable Protective Cover and Product Identification Marking

KAO CORP, 2023

Sheet member container for products like food and beverages that can be easily recycled by separating and washing the components. The container has a main body made of laminated sheet members with attached and non-attached regions. A protective cover surrounds the main body. By separating the cover and washing the laminated sheets, the components can be recycled independently. This avoids contamination and allows reusing the main body sheets without the cover material. The container also has a marking part on the main body for identifying the product.

21. Cardboard-Based Packaging Material with Integrated Printing and Protective Layers

SIG COMBIBLOC CO LTD, SIG COMBIBLOC SUZHOU CO LTD, 2023

Packaging material that is easier to recycle and has reduced environmental impact compared to conventional packaging materials. The packaging material has a cardboard layer with a barrier layer and heat seal layer on one side. On the other side, instead of a separate PE layer, a printing layer is added. A protective layer and primer layer are then formed on the printing layer using gravure printing. This eliminates the need for an outer PE layer, making recycling simpler and more cost-effective.

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22. Flexible Multilayer Packaging Films with PE-Based Inner Layer and Low EVOH Barrier for Enhanced Recyclability

AEROFLEXX LLC, 2023

Flexible recyclable multilayer packaging films that can be easily recycled without contaminating the recycling stream. The packaging films have a specific composition and structure to enable curbside recyclability. The films contain a PE-based inner layer with a low EVOH barrier layer (<5%), and an outer layer with PE, PA, and EVOH. The PA and EVOH ratios are optimized for performance and recyclability. The films avoid nylon and PET layers that make packaging non-recyclable. The optimized compatibilizer ratios in the inner layer allow recycling of the films in common streams. The films can be laser processed and have good seal strength. The films are suitable for flexible packaging containers.

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23. Paper-Based Packaging Material with Transfer-Metallized Thin Metal Layer for Barrier Properties

DURAN DOGAN BASIM VE AMBALAJ SANAYI A S, Duran Doğan Printing and Packaging Industry Co., 2023

Paper-based packaging material that is recyclable and reusable but also provides the necessary oxygen, moisture and grease barrier levels to keep the freshness of food for prolonged periods like in the case of packaging those made from the fossil sources or even superseding them. The material comprises a fibre-based main base, a thin metal layer, preferably from aluminium, coated on the base by transfer metallisation method and glue between the main base and the metal layer.

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24. Manufacturing Method for Hexagonal Containers Using Biodegradable Polymer-Coated Paper

NP KOREA, 2023

A method for manufacturing eco-friendly packaging containers using biodegradable materials that are harmless to the environment and human health. The method involves cutting a base paper into a specific shape, assembling it into a hexagonal container with an open top, coating the container with a solution of biodegradable polymer resin, and curing the coating to form a protective layer. This provides an eco-friendly packaging container that is biodegradable, recyclable, and has improved physical properties like water and oil resistance compared to traditional containers.

25. Starch-Based Biodegradable Packaging Material with Enhanced Moisture Resistance and Gas Barrier Properties

Hangzhou Zetong New Material Technology Co., Ltd., 2023

Bio-based biodegradable packaging material that reduces dependence on petroleum and improves sustainability compared to traditional petroleum-based packaging. The material is made from starch-based plastics, plant fibers, sorbitol, light stabilizers, antioxidants, and additives like polytetrafluoroethylene, fatty alcohol polyoxyethylene ether, oleic acid amide, titanium dioxide, and modified silicon dioxide. The additives improve properties like moisture resistance and gas barrier while maintaining biodegradability.

26. Molded Pulp Containers with Integral Expandable Thermoplastic Linings

LGAB LLC, 2023

Molded pulp containers with integral linings to reduce plastic waste and make biodegradable drink bottles. The containers have a molded pulp shell with a cavity and an expandable lining made of thermoplastic material. The lining is inserted into the shell and expanded to fill the cavity. This provides an integral lining without needing separate attachment steps. The expandable lining conforms to the shell shape for better sealing and shock absorption compared to separate liners. The lining can be made from biodegradable materials like PLA. The molded pulp shell can be made from recycled paper pulp.

27. Bio-Based Polyester Composition with Functional Polymer and Fillers for Enhanced Gas Barrier and Mechanical Properties

Suzhou Hanhai New Materials Co., Ltd., SUZHOU MACROOCEAN NEW MATERIAL CO LTD, 2023

A bio-based polyester for food packaging applications that degrades in the environment and reduces plastic waste. The polyester is made using a specific composition of polyester, functional polymer, fillers, and auxiliaries. The bio-based polyester has good gas barrier properties, tensile strength, and degradability. The functional polymer improves gas barrier by dispersing in the polyester matrix. The fillers provide mechanical reinforcement. The bio-based polyester can be prepared by a specific method involving mixing the components and extruding.

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28. Biodegradable Composite Containers with Liquid Impermeable Laminated Film

CELANESE INT CORP, CELANESE INTERNATIONAL CORP, 2023

Composite food and beverage containers that are biodegradable and/or paper recyclable. The containers have a compostable or paper recyclable fibrous substrate with a liquid impermeable biodegradable or paper recyclable film laminated on one side. The film prevents leakage when frozen or heated. The lamination strength prevents delamination during freezing, thawing, and heating. The compostable film can be made from biodegradable polymers like cellulose esters. The paper recyclable film can contain water-soluble adhesives compatible with recycling. The containers replace fossil fuel-based plastics for food handling applications that cannot be recycled or composted.

29. Layered Packaging Structure with Paper Substrate and Biodegradable Resin Coating

ALL4LABELS GRAFICA DO BRASIL LTDA, ALL4LABELS GRAPHICS OF BRAZIL LTD., TECNOVEG IND E COMEROO LTDA, 2023

Biodegradable, recyclable, sealable, compostable, thermoformed packaging to be used in the packaging of food for hot dishes, frozen foods, cold foods, meat cuts and vegetables in general, as well as for personal and domestic hygiene products, among others. The packaging comprises layers, a first layer being in paper and a second layer, covering the first, being in biodegradable resin.

30. Multilayer Food Storage Containers with Inner Barrier Layer Isolating Post-Consumer Recycled Plastic

JPMORGAN CHASE BANK NA, 2023

Food storage containers made from multilayer materials that contain post-consumer recycled (PCR) plastic. The containers have a multilayer structure with an inner barrier layer between the PCR layer and the food cavity. This isolates the PCR plastic from the food to prevent contaminants from migrating into the food. The barrier layer restricts gas transfer from the PCR plastic to the food. The containers can be thermoformed from coextruded multilayer sheets containing varying amounts of PCR plastic.

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31. Oriented Polar Polymer Packaging Film with Compatibilizer Layer for Polyethylene Recycling Compatibility

AMCOR FLEXIBLES NORTH AMERICA INC, 2023

Recyclable packaging films that can be easily recycled like regular polyethylene plastics but have the performance of non-recyclable high-performance packaging films. The films have an outer layer made of oriented polar polymers like polyamide, an inner sealant layer, and a layer of compatibilizer between them. This allows the polar polymers to be recycled with polyethylene without requiring incompatible materials in close proximity. The outer layer orientation and annealing provide heat resistance and appearance. The recyclable films can be used in high-performance packaging applications like food and pharmaceutical products.

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32. Biodegradable Multi-Layer Composite Packaging Material with Coated Cellulose, Kraft Paper, and Modified PBAT Layers

ZHUHAI HENGQIN HUIZEFENG PACKAGING TECH CO LTD, ZHUHAI HENGQIN HUIZEFENG PACKAGING TECHNOLOGY CO LTD, 2023

Biodegradable high-barrier paper-plastic composite packaging material with improved barrier properties and environmental friendliness compared to single-layer materials. The composite consists of a coated cellulose layer, a kraft paper layer, and a modified PBAT layer sandwiched together by an adhesive. The composite is prepared by composite processing techniques like dry composite or solvent-free composite to bond the layers. The coated cellulose layer provides barrier properties, kraft paper adds moisture resistance, and modified PBAT improves sealability. The composite structure offers a degradable alternative to traditional plastic packaging with better barrier properties and environmental benefits.

33. Mono-Material Retort Pouch with Co-Extruded Polypropylene Layers for Heat Sterilization

SESA AMBALAJ VE PLASTIK SANAYI TICARET ANONIM SIRKETI, 2023

Recyclable retort pouch for food packaging that can withstand heat sterilization without using metal cans or complex multi-material pouches. The pouch is made from mono-material layers: an outer layer of oriented polypropylene (OPP) and an inner layer of polypropylene (PP). The OPP provides barrier properties while the PP provides strength. This allows the pouch to be easily recycled since it's made from a single material. The PP inner layer can be produced by co-extrusion blowing to incorporate EVOH for oxygen barrier. An adhesive joins the layers together.

34. Multilayer Packaging Structure Incorporating Near Infrared Detectable Pigments in Post-Consumer Recycled Plastic Layers

CONOPCO INC, 2023

Sustainable packaging made from post-consumer recycled plastic that aims to bring waste colored and black plastic into new packaging while using Near infrared (NIR) detectable pigment in the colorant masterbatch. The packaging is made from a multilayer of post-consumer recycled (PCR) plastic. The outer layer is made from natural PCR, like milk bottles, while the inner layer contains at least 50% colored PCR, like waste colored bottles. The outer and inner layers can both have NIR detectable pigments to make the packaging recyclable and sortable using NIR sorting systems. This allows recycling the colored PCR from waste bottles into new packaging.

35. Dual-Component Liquid Food Packaging with Tool-Free Resealable Inner Bag and Recyclable Outer Cardboard Structure

RIN-PACK AB, 2023

Packaging design for liquid food products that allows easy opening, resealing, and complete emptying while improving shelf life and recyclability. The packaging has an inner bag made of a material that can be easily opened and sealed without tools, unlike screw caps. The inner bag is filled separately from the outer packaging, preventing air from entering the product. After use, the inner bag can be removed and recycled separately. The outer packaging is made of uncoated cardboard that can be fully recycled. This eliminates the need for coated packaging that can't be easily recycled. The inner bag also reduces the amount of air inside the packaging during storage, improving shelf life.

36. Biodegradable Foam Material Comprising Wood Fibers and Binder Expanded by Dielectric Heating

HENKEL AG & CO KGAA, 2023

Lightweight, biodegradable, and compostable foam materials for sustainable packaging applications. The foam is made by hydrating wood fibers, a binder, a surfactant, and water to form an intermediate foam. The intermediate foam is then expanded using dielectric heating or microwaves to create a super-expanded foam. This foam can be applied to substrates like paper to make cushioned packaging materials that are biodegradable, compostable, and recyclable. The foam can also be used as an insulation material. The foam composition can contain 1-40% wood fibers, 0.5-20% binder, 0.2-10% surfactant, and water.

37. Laminated Film Structure with Polyethylene Base and Ceramic/Metal Layer for Barrier Enhancement

BOREALIS AG, 2022

Laminated film structure with improved barrier properties and recyclability using a polyethylene (PE) base. The structure has a PE first film with a thin ceramic or metal layer on one side. This is laminated to a PE second film. The PE films can have different structures, like bimodal LLDPE, but the ceramic/metal layer prevents PE-to-PE adhesion. The ceramic/metal layer provides barrier properties without adding non-PE layers. The PE films are also oriented and have specific densities and melt flow rates.

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38. Biodegradable Packaging Film Comprising Starch, Bamboo Fiber, and Biodegradable Polymers

SHANGHAI PEILI PACKAGING PRINTING CO LTD, 2022

A biodegradable packaging material made from starch and bamboo fiber that breaks down fully in the environment. The packaging formula contains biodegradable resins, biodegradable polymers, cross-linking agents, talc, compatibilizers, lubricants, coupling agents, degradation regulators, dissolved bamboo fiber, polylactic acid, and aminated plant starch. The packaging is produced using film blowing machines that melt and extrude the biodegradable materials into films. The fully biodegradable packaging material aims to provide an alternative to non-biodegradable plastics that decompose naturally and have lower environmental impact.

39. Multilayer Laminated Film with Recycled PET Substrate and Inorganic Barrier Layer

TOYOBO CO LTD, 2022

Laminated film for packaging foods, pharmaceuticals, and industrial products that maintains barrier properties and adhesiveness after severe wet heat treatment like retort sterilization. The film has a unique composition and structure. It uses a recycled polyester resin from PET bottles as the substrate film, sandwiched between two thin coating layers and an inorganic thin film layer. The coating layers have flexibility and adhesion. The coating on the substrate improves barrier properties. The protective layer on the inorganic film prevents whitening after retorting. The recycled resin from PET bottles provides lower haze and whitening compared to virgin resins.

40. Multi-Layer Biodegradable Packaging Material with PVA-Coated Paper and Enhanced Gas Barrier Films

HA HO, HA SUNG HOON, HA TAE KYU, 2022

Eco-friendly packaging material that is harmless to the human body and improves gas barrier properties while minimizing deterioration of contents. The material involves layering biodegradable films like PLA, PBAT, PBS, EVOH, EVA, and HMF on paper or existing packaging films. A PVA film is applied to the paper surface. The biodegradable films provide barrier properties. This allows recycling like a container after use. The PVA film seals and prevents migration. The biodegradable films decompose harmlessly in nature.

41. Amber, Red, and Opaque Recycled PET Plastic Containers with Color Masking for Light Exposure Mitigation

MELROSE ALLEN CAMPBELL, MELROSE DAVID MURRAY, MELROSE-ALLEN CAMPBELL, 2022

Cold and hot-fill plastic containers that preserve the quality of contained beverages for longer periods of time by using specific colors and materials to mitigate yellowing and degradation from light exposure. The containers are made from recycled PET (rPET) to reduce environmental impact, but yellowing during recycling can make the resulting bottles less appealing. To address this, the containers are colored amber, red, or opaque to mask the yellowing. Amber provides good masking for rPET used in clear containers. Red masking allows higher rPET content. Opaque containers prevent light exposure altogether. The colored containers also protect the beverages inside from light-induced degradation.

42. Biodegradable Packaging Material Comprising Aliphatic Polymers, Vegetable Starch, Chitosan, and Inorganic Filler

SUZHOU YUANRUI PACKAGING CO LTD, 2022

Degradable plastic packaging material made from biodegradable polymers that breaks down naturally after use. The material contains aliphatic polymers like polylactide, polyglycolide, polybutylene succinate, and polypropylene carbonate. It also has vegetable starch, chitosan, inorganic filler, and functional additives. The specific ratios of the polymers are optimized for strength and barrier properties. The material is prepared using extrusion and film blowing techniques.

43. Polyolefin-Based Barrier Film with Hydroxyl Polymer and Water-Swellable Mica Coat Layer

TOPPAN INC, 2022

Barrier film for packaging applications that can be recycled easily while maintaining high gas barrier properties. The film has a deformation-withstanding barrier coat layer on a base film made of polyolefin. The barrier coat layer contains a hydroxyl group-containing polymer and water-swellable mica. The mica content is 5-35% by mass of the coat layer. The mica allows the coat layer to conform to deformations of the base film, providing good flex resistance. The hydroxyl polymer improves gas barrier properties. The film can be used in monomaterial packaging by combining it with a polyolefin sealant layer.

44. Biodegradable Food Packaging from Cellulose and Agricultural Waste with Biopolymer Film Sealing

GRUPO CELULOSAS MOLDEADAS S L, GRUPO CELULOSAS MOLDEADAS SL, 2022

Rigid or semi-rigid biodegradable food packaging that is recyclable and compostable, designed for fresh produce like strawberries, cherries, and blueberries that are sensitive to damage. The packaging is made entirely from biodegradable materials that can be composted after use. It is constructed using cellulose obtained from mixtures of recycled paper and agricultural waste like sugarcane residues. The packaging can be sealed using biopolymer films. The goal is to create a durable and reusable food packaging that can be composted at the end of its life.

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45. Multi-Layered Beverage Cup with Expanded Polyethylene Terephthalate Core and Rounded Flanged Edge

FORPET S A R L, FORPET SARL, 2022

Disposable hot and cold beverage cup with improved strength and recyclability compared to traditional cardboard or polystyrene cups. The cup has a multi-layered construction with a truncated cone or cylindrical lateral wall and base. The layers include an inner expanded polyethylene terephthalate (PET) layer for support and strength, a middle polyethylene layer for welding, and an outer printed layer for graphics. The PET layer replaces cardboard and has a density of 100-900 kg/m3 and intrinsic viscosity of 0.5-1.0 dl/g. This allows the cup to withstand repeated bending without crushing. The PET layer can also be recycled PET. The multi-layered construction provides good barrier properties and allows recycling without incineration. The rounded flanged edge improves stackability

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46. Cellulose Fiber and Aluminum Dispersion in Polyethylene Matrix via Melt-Kneading of Laminated Packaging Films

FURUKAWA ELECTRIC CO LTD, 2022

Recycling cellulose-containing polyethylene films from laminated food and beverage packaging into a composite material with improved properties. The recycling process involves melt-kneading the cellulose-adhering polyethylene films in the presence of water to disperse the cellulose fibers and aluminum throughout the polyethylene matrix. The resulting composite has reduced water absorption compared to recycling the films without dispersion. The process enables producing cellulose-aluminum-dispersing polyethylene resin composite materials with specific cellulose content ranges that are useful as raw materials for recycled resin products.

47. Co-Extruded Multilayer Polyester Film Retort Pouch with Recycled PET Layer and Specific Inherent Viscosity Heat Seal Layer

NAN YA PLASTICS CORP, 2022

Recyclable retort pouch for food packaging that simplifies manufacturing, reduces failure rates, and allows recycling compared to conventional multi-layer retort pouches. The pouch uses a co-extruded multilayer polyester film instead of bonding layers with adhesive. The film has a heat seal layer made of specific polyester composition, followed by a polyester layer made from recycled PET bottle flakes. The polyester composition has an inherent viscosity range. This simplifies production as the layers can be co-extruded without adhesives, reduces failure rates since there are fewer layers to delaminate, and allows recycling since it's all one polyester material.

48. Biodegradable Packaging Material Comprising Brewing Byproducts, Plant Fibers, and Eco-Friendly Repellents

LEE RO WOON, 2022

Biodegradable packaging material for beverage cans that can decompose in nature without harming the environment. The packaging is made from a mixture of brewing byproducts, plant fibers, and eco-friendly oil and water repellents. It is manufactured by pulverizing the brewing byproducts, mixing them with the other ingredients, molding into shape, and drying. The biodegradable packaging provides a sustainable alternative to non-biodegradable plastic 6-pack rings. The eco-friendly repellents prevent deterioration from UV, moisture, and temperature. The biodegradable material can decompose in soil and provide nutrients for plants.

49. Recyclable Multilayer Film with Oriented Polyethylene for High-Barrier Packaging

CANGURU PLASTICOS LTDA, 2022

A recyclable, high-barrier multilayer film for pet food packaging that provides oxygen, water vapor, and fat barrier without using non-recyclable materials like nylon. The film is made of coextruded layers of ethylene-based polymers like HDPE and LDPE that are oriented to enhance barrier properties. The film structure is PE/PE, unlike conventional PE/PET or PE/PET/PE structures. This allows 100% recyclability since it contains only polyethylene layers. The oriented PE layers provide barrier equivalent to nylon-containing films. The film can also have a metallic-effect foil layer for visual differentiation.

50. Compostable Food Packaging Containers with Integrated Oxygen Barrier Layers

ADVANCED EXTRUSION INC, 2022

Compostable food packaging containers that provide both compostability and adequate oxygen barrier properties to maintain food freshness. The containers are made mostly of compostable polymers like PLA, but also contain small amounts of oxygen barrier materials like EVOH or polyglutamic acid. This balances compostability with oxygen barrier performance. The containers can have oxygen transmission rates (OTR) between 2.5-32.5% when filled with food, allowing extended shelf life. The oxygen barrier materials are compostable in some embodiments.

51. Biodegradable Composite Lunch Box Formed from Activated Straw Powder and Polylactic Acid

52. Multi-Layer Biodegradable Packaging Material with Bioplastic and Paper Composition

53. Thin-Walled PET Containers with Specific Thickness and Stretch Ratios Using Recycled PET

54. Biodegradable Packaging Comprising Renewable Polyolefins with Integrated Biodegrading Agents

55. Biodegradable Expanded Propylene Foam Packaging with Cellulose-Based Coating Layer

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