Starch in Sustainable Packaging

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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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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Biodegradable nanocomposite food packaging films that provide enhanced antimicrobial and oxidation inhibition properties to prevent spoilage and pathogen growth. The films are made by incorporating biosynthesized zirconium nanoparticles capped with a bioactive compound called Arachisan derived from peanut leaves. The ArZrNPs provide antimicrobial activity against food-borne pathogens like Salmonella and E. coli. They also scavenge free radicals to prevent oxidation. The nanoparticles are dispersed in biodegradable polymer films for sustainable packaging with extended shelf-life and reduced pathogen risk.

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Eco-friendly and biodegradable packaging materials made from sugarcane bagasse that are sustainable, flame retardant, mechanically robust, thermally stable, and have low environmental impact compared to plastic alternatives. The process involves delignifying the bagasse, phosphorylating it, homogenizing, sonicating, casting, freezing, and freeze-drying to create films, aerogels, boards, boxes, plates, and sheets. The phosphorylation step enhances the properties like solvothermal stability, degradation resistance, and flame retardancy.

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A packaging unit with oxygen and moisture barrier properties for long-term storage of food products without compromising the product quality. The packaging unit has a tubular shape with a removable closure. The packaging body and closure are made of paper with high cellulose content and barrier layers against oxygen and moisture. This provides a sustainable and compostable packaging option with extended shelf life for sensitive foods. The paper-based construction reduces environmental impact compared to plastic, while the barrier layers prevent oxidation and moisture absorption. The tubular shape provides shock absorption.

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A sustainable packaging method that replaces plastic bubble wrap with paper-based packaging articles that have similar cushioning properties. The method involves continuously supplying Kraft paper with a minimum machine direction stretch of 5% at temperatures between 10-40°C. The paper is plastically deformed to form a structured layer with embossments or flutes. This layer is then joined with a flat cover layer to create a compound layer that forms the packaging article. The paper-based packaging has a similar cushioning effect as bubble wrap but without requiring high temperatures or moisture for deformation. The packaging can be formed into envelopes, boxes, etc.

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Eco-friendly packaging composition made from fried food waste, biomass, and a solvent. The composition can be molded into 3D structures and used as a sustainable packaging alternative. The fried food waste provides a binding agent, the biomass adds strength, and the solvent helps mix it all together. The composition is derived from fried food scraps, like oil-rich crumbs, and uses biodegradable materials to reduce environmental impact compared to traditional petroleum-based plastics.

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Eco-friendly cushioning packaging material made from natural pulp like sugarcane and bamboo instead of plastic or wood pulp. The packaging material is manufactured by processing paper made from the natural pulp. To reduce dust generation from the short fibers of sugarcane pulp, a small amount of bamboo pulp is added during fabric production. The paper surface is coated with starch and biodegradable wax to improve strength and water resistance. This allows replacing traditional plastic cushioning materials with a more sustainable option that reduces plastic usage, carbon emissions, and environmental pollution.

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Eco-friendly bioplastic nutrient packaging containers that are fully biodegradable and made from renewable resources. The containers are produced using bioplastic materials like polylactic acid, succinate-based aliphatic polyesters, and cellulose-based bioplastics. The containers have improved processability compared to previous bioplastics, allowing them to be manufactured using blow molding and extrusion methods. The containers are designed to be fully biodegradable in the natural environment, reducing environmental impact compared to traditional petroleum-based plastics.

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Product packaging material with high paper content and transparency to reduce plastic use. The packaging has a pouch formed between a main sheet of unlaminated paper and a transparent front sheet made of either film or cellophane. They are bonded together using water-based adhesive. The paper weight in the packaging exceeds 50% or 60% to increase recyclability. The transparent front allows product visibility while reducing plastic content compared to fully plastic packaging.

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Smart food packaging film containing modified oat starch, betalain, and cellulose nanofibers that can monitor food spoilage without using synthetic pigments. The film is made by extracting starch from oats, treating it in subcritical water, extracting betalain from beet peels, mixing with cellulose nanofibers, and drying. The modified oat starch has higher solubility and lower crystallinity compared to natural oat starch, allowing better dispersion with betalain. The cellulose nanofibers reduce betalain temperature sensitivity. The film contains betalain instead of synthetic pigments for color without harming food.

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Paper-based plastic packaging material and a pouch-shaped container made from it. The packaging material replaces aluminum and synthetic polymers in conventional packaging to reduce environmental impact. It uses paper as the main barrier layer, along with a thin plastic layer on one side. The paper provides moisture and oxygen blocking, while the plastic adds strength and sealability. The paper-plastic-paper structure allows barrier properties comparable to aluminum packaging without the recycling issues. The paper-based plastic pouch container can be used for products like food, pharmaceuticals, and cosmetics.

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A recyclable paper-based packaging film for hygiene products like diapers and sanitary pads that can be easily recycled along with paper waste. The film has a thin coating layer made of biopolymers and vegetable waxes applied to a paper substrate. The coating provides barrier properties to prevent contact between external agents and internal components. The paper-based film can be formed into different packaging shapes like box pouches and pouches with angled bottoms, unlike conventional polymer-based packaging. The recyclability and versatility of the paper-based film make it an environmentally friendly alternative to polymer films.

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Molded fiber packaging that is suitable for wet products without using excessive plastic. The packaging is made by wet molding a fiber material like recycled paper or cardboard. To make it waterproof, the molded fiber is coated with a thin layer of hydrophobic material. This prevents water absorption and keeps the contents dry. The hydrophobic coating can be applied using techniques like spraying, dipping, or roller coating. The coated molded fiber packaging provides water resistance without adding plastic layers or inserts, reducing waste and simplifying recycling.

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Biodegradable packaging material for dairy products made from sugarcane bagasse, a waste byproduct from sugar production. The packaging is coated with a bioplastic made from polylactic acid (PLA) and polybutylene adipate-co-terephthalate (PBAT) to prevent reaction with dairy products. The coating allows the bags to be reused after washing. The bioplastic is made from biodegradable materials like starch and glycerol. The uncoated bagasse has low moisture and water absorption. The coated bags have reduced moisture and water absorption compared to the uncoated bags.

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Enriched edible films for primary food packaging made from waste fruit peels like banana and jackfruit peels, to replace non-biodegradable plastics and foils. The films are made by extracting nutrients like antioxidants, vitamins, and minerals from the fruit peels, then combining them with biopolymers to create edible films that can be used as primary packaging for food. This provides a sustainable and nutritious alternative to plastic wraps, reduces waste, and enhances the nutritional value of packaged foods.

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Custom product packaging made entirely of corrugated cardboard and biodegradable foam without adhesives or tape. The foam is adhered directly to the corrugated surface by heating the corrugated area and pressing the foam against it. The foam used is made of polylactic acid (PLA) which bonds strongly to the heated cardboard. This allows customizable foam protection without additional adhesives or tape. The packaging is fully compostable and reduces waste compared to conventional packaging with separate foam and cardboard pieces held together with adhesives.

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Biodegradable food packaging film made from natural polymers like guar gum, agar-agar, and beeswax. The film has excellent oxygen barrier properties to maintain freshness and shelf life of food products. It also has low water vapor permeability, good mechanical strength, and contact angle greater than 90 degrees. The biodegradable film reduces environmental impact compared to traditional plastic packaging. The film is prepared by dissolving guar gum and agar-agar in water, adding beeswax, and spreading the solution onto a substrate to dry into the film.

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Bioplastics made from agricultural waste like mango seeds, filled with chitosan or nanochitosan, for use as sustainable food packaging. The bioplastics have improved properties like reduced water vapor transmission, better mechanical strength, and antimicrobial activity compared to the pure mango seed bioplastic. The chitosan and nanochitosan fillers also reduced water uptake. The recommended bioplastics for food packaging are 20% CS-30% Sor-10% CA and 30% NCS-20% Sor-10% CA.

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A food-grade barrier coating for molded pulp products like bowls, trays, and containers that provides water and grease resistance. The coating is made by crosslinking shellac resin applied to the pulp. The crosslinking involves thermal aging in an oven to melt and fuse the shellac chains. This creates a durable, water-repellent coating that penetrates the pulp fibers. The coated pulp products have low cobb (water absorption) and kit (grease penetration) values, making them suitable for food packaging. The crosslinked shellac barrier meets food migration limits at elevated temperatures.

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