Raw Material Blending for Package Production

Biodegradable and compostable polymer compositions for flexible food packaging films that have low water vapor permeability. The compositions contain a mixture of biodegradable polyesters, including rigid polyesters like PBS, PLA, and PHA, as well as flexible polyesters like PBAT and PCL. The compositions also have small amounts of hydrophobic additives like behenamide. The blends have desirable mechanical properties like high modulus, strength, and elongation for packaging applications.

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Packaging material and method for producing packaging that reduces microplastics and enables recyclability. The packaging uses a paper base layer with a sealing media applied to specific areas. This allows reliable sealing without using multiple non-biodegradable layers. The sealing media is water-soluble and applied selectively to the sealing areas. The paper base is recyclable in paper recycling processes. The packaging can have high barrier properties and is suitable for food like coffee.

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Corrugated cardboard packaging for cooking appliances that provides an environmentally sustainable and space-saving alternative to expanded polystyrene (EPS) foam packaging. The corrugated cardboard packaging aims to reduce environmental impact, improve recyclability, and save storage space compared to EPS foam. The packaging design uses corrugated cardboard with different densities or layers to provide varying levels of durability and impact absorption for shipping protection. The cardboard packaging is fully recyclable, unlike EPS foam, and can be made from biodegradable materials. It also reduces storage space compared to bulky EPS foam.

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Adhesive structure for packaging boxes that improves adhesion strength between side plates by using different adhesives with complementary properties. The structure involves two adhesive types, like hot melt and water-based emulsion, applied side by side on the side plate folding surfaces. An adhesive hole is formed between the adhesive sections. The holes are filled with either adhesive type to increase adhesion area. This leverages the advantages of each adhesive type, like heat resistance vs water resistance, while mitigating their weaknesses.

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Natural fiber-based transparent composites for food packaging that provide a sustainable alternative to fossil fuel-based packaging materials. The composites are made by UV polymerization of alkene and thiol-based monomers with natural fibers like jute. The UV radiation initiates crosslinking reactions to form a tightly bonded matrix around the fibers, resulting in high transparency (>90%) for packaging applications where visibility of contents is essential. The composites offer benefits of natural fiber composites with improved mechanical properties compared to neat polymer films.

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Paper-based packaging film with improved light barrier, moisture barrier, and recyclability for food products like butter and margarine. The film has a paper component, a polymeric film, a metallic flake layer printed on the polymeric film, and a white pigment layer between the metallic flake layer and the paper. The metallic flake layer provides light blocking, the white pigment layer enhances paper appearance, and the adhesive between the layers enables clean separation during recycling. The metallic flake grammage is kept low to balance barrier and recyclability.

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Barrier substrate for packaging containers with excellent gas barrier properties. The barrier substrate is made by coextruding a polyolefin-based stretched film with two resin layers containing polyolefin as the main component and an optional adhesive layer. A vapor deposition film is then applied to the outer surface. The barrier substrate can replace metal-coated substrates for better recyclability. The polyolefin-based barrier has good gas barrier properties and can be used in packaging containers without delamination or corrosion issues when filled with reactive contents.

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Environmentally friendly and convenient tissue packaging container that avoids contamination issues and reduces waste compared to conventional containers. The container has a divided interior with a cut groove separating two zones. The container is made by laminating layers of polyethylene, polypropylene, and a shellac polymer. The groove is formed by laser cutting. This allows easy opening without a separate sealing strip. The divided interior prevents adhesive seepage into the tissues. The container can be manufactured in one step by laminating and cutting instead of separate sealing steps.

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Eco-friendly vinyl packaging material that replaces aluminum and starch, decomposes over time, and reduces greenhouse gas emissions when incinerated. The packaging material contains a blend of high-density polyethylene (HDPE), low-density polyethylene (LDPE), biodegradable bionyl, and additives like stearic acid, copper, manganese, zinc, calcium carbonate, softener, and octene. The bionyl includes ethylene vinyl acetate (EVOH), a biodegradable mixed powder, and an oxidative biodegradable catalyst. The packaging is manufactured by extrusion and stretching the blended material. It can be used for food and cosmetics packaging that decomposes over time and reduces environmental impact compared to traditional vinyl.

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Multilayer substrate for packaging materials with improved gas barrier properties and adhesion between layers. The substrate has a stretched polypropylene layer sandwiched between an outer layer and an inner coating layer. The coating layer contains a resin with polar groups to improve adhesion of subsequent layers like vapor deposited films. This prevents delamination and improves gas barrier performance compared to polypropylene-only substrates. The multilayer substrate can be used in packaging applications and the packaging material is made by laminating the substrate with additional layers like vapor deposited films and sealant layers.

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Low opacity, biodegradable, and heat-sealable paper made from cellulose fibers coated with a bio-based wax to reduce opacity and improve barrier properties. The paper has a base sheet of refined softwood cellulose fibers with a basis weight of 10-25 g/m2. It is coated with a transparency agent like a coconut-based wax and a heat-sealable coating like a thermoplastic starch or protein. The coated paper has opacity less than 35% and can be used for packaging without supercalendering.

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Sealant film for packaging applications that enables recycling of mixed resin materials. The film has a layer containing recycled material with two or more resin types, followed by a separate sealant layer. The recycled layer has small, localized regions with lower transmission compared to the surrounding. These regions have maximum area and aspect ratio limits to prevent clumping. This allows recycling mixed resins while maintaining sealant and mechanical properties.

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Coating packaging materials like paper and cardboard with a thixotropic aqueous mixture to improve barrier properties like reducing gas and moisture transfer through the material. The coating composition contains smectite clay, a water-soluble polymer, and a cross-linking agent that links the clay to the polymer. Applying the mixture to a surface and heat treating crosslinks the clay-polymer barrier. This provides coated packaging with improved barrier properties for replacing single-use plastic in produce shipping.

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A three-layer structure discharge nozzle for producing packaging bands with improved tensile strength at a lower cost. The nozzle is used in a device that manufactures packaging bands. The bands have a three-layer structure with an outer layer made of a high-tensile strength material and an inner layer made of a lower cost material with lower tensile strength. This allows using a more expensive, high-performance material for the outer layer where it contacts the product, while the inner layer can be a cheaper material with lower strength. This improves band strength and quality compared to using a single layer, without requiring multiple colors or expensive materials throughout the band.

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Eco-friendly packaging solution for heating devices like water heaters and tanks that reduces plastic usage and improves protection during transportation. The packaging uses molded pulp materials like recycled paper to make a base element that surrounds and supports the bottom of the device. The base engages into a pallet and has foldable edges to secure it. This replaces single-use plastic wedges and strapping. A covering element goes on top and side elements on the sides. The molded pulp provides cushioning and stability without plastic, reducing environmental impact compared to expanded polystyrene.

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Bag for packaging fruits and vegetables that prevents mold growth and spoilage without sacrificing visibility of the contents. The bag has a first region made of a polylactic acid (PLA) film and a second region made of a paper sheet. The paper sheet can be a laminate with a resin layer. The paper sheet basis weight is 100 g/m2 or less. The PLA film density is 1.0 g/cm3. The regions are bonded by heat sealing or an adhesive. This configuration using PLA film and paper inhibits mold growth better than just PLA film alone. The paper prevents mold while allowing visibility.

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Eco-friendly laminated film for packaging applications that maintains barrier properties and bonding strength after heat sterilization. The film has layers: an outermost stretched PP film, a barrier coating of modified PVA, an adhesive layer, an inner stretched PP film, and a heat seal layer of unstretched PP with lower melting point than the outermost layer. The barrier coating contains modified PVA crosslinked with organosilane compounds. The inner PP film has a lower melting point than the outermost film. This configuration allows the film to retain gas barrier and adhesion after heat sterilization.

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An environmentally friendly can packaging container that is made from naturally degradable materials and allows for easy recycling of its components. The container has a spiral paper tube shell with a removable aluminum lid. Inside the shell is a waterproof inner bladder made of biodegradable plastic. The lid has an annular skirt that covers the flange of the inner bladder when closed. This allows for easy separation and recycling of the paper, plastic, and aluminum components when the container is empty.

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Eco-friendly internal packaging material made from a biocomposite of mycelium, pine needles, wheat straw, and wood powder. The composite is reinforced with pine needles and grown using Pleurotus ostreatus mycelium. It provides cushioning and protection for fragile items like electronics while being fully biodegradable. The composite is made by inoculating the substrate with mycelium, sterilizing, growing, and heat treating to cure.

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Thermally insulated, waterproof, and high-strength packaging bag that provides improved protection for goods while reducing wrinkling and damage. The bag uses a composite structure with outer and inner paper layers sandwiched between insulating foam layers. Elastic adhesive is used to bond the layers. The outer layer has a convex buffer structure that disperses pressure. The insulating foam has a gradient height convex structure to prevent wrinkling. The adhesive is a polyurethane emulsion with thickener, wetting agent, and silane coupling agent for strength and elasticity.

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