Wax-Based Solutions for Moisture Protection

A method for manufacturing a recyclable and moisture-proof packaging strip that is easy to recycle, has water repellency, low adhesion, and anti-static properties, and is environmentally friendly and moisture-proof. The method involves forming a double coating layer on the inner surface of the paper fabric constituting the packaging strip. The first coating layer is made with an acrylic resin composition. The second coating layer is made with modified calcium carbonate. This provides water repellency, low adhesion, and anti-static properties. The paper fabric with the double coating layer is overlapped and bonded to create a barrel-shaped packaging strip. This eliminates the need for synthetic resin films that can't be easily recycled.

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Liquid repellent packaging materials for preventing adhesion of contents like foods, liquids, and gels to the inner surface. The materials have a liquid repellent coating formed using a specific resin composition. The composition contains a propylene resin (A) with a specific blend ratio of random and block polypropylene segments, and a silylated polyolefin (B) as the liquid repellent component. The segment ratio of A provides optimal crystallinity and melting point for precipitating silicon on the surface to improve repellency.

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A multilayer film for lid seals on food containers that balances antifogging, easy opening, impact resistance, and blocking resistance. The film has at least two layers, a base layer made of biaxially oriented polyester, and an antifogging layer coated on top. The base layer improves impact resistance and prevents tearing during opening. The antifogging layer prevents fogging and condensation inside the container. The film also has good blocking resistance to prevent jamming during roll storage. The biaxially oriented base layer provides the required properties.

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A drip catcher device for bottles that prevents drops from accumulating on the mouth and running down the side. The device is a removable cylindrical sleeve that attaches around the neck of the bottle. Instead of using PTFE coating, the outer surface of the sleeve is coated with a thin layer of ceramic paint. This ceramic coating provides superior drop repellency compared to PTFE, without the health concerns or durability issues. The ceramic coating also has better mechanical properties and adhesion than PTFE.

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Biodegradable packaging container with improved oxygen barrier and moisture resistance using a biodegradable composition coating. The composition contains polyvinyl alcohol (PVA), an organic dispersant like levan, and a crosslinking agent with a carboxylic acid group. The levan disperses in the PVA forming a core-matrix cluster effect that makes the surface hydrophobic. The crosslinking agent induces crosslinking between the PVA chains to reduce internal swelling. This improves moisture resistance without affecting the high oxygen barrier properties of PVA. The coating on the packaging container is made by casting the biodegradable composition onto a substrate and drying it.

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Barrier paper with improved folding resistance and water repellency compared to conventional barrier papers. The paper has a gas barrier layer made primarily of polyvinyl alcohol (PVA) and a water vapor barrier layer containing wax and styrene-acrylic copolymer. The PVA gas barrier layer can have up to 15 parts per 100 of inorganic compound, or no inorganic compound. The water vapor barrier layer contains no inorganic compound. This composition allows the paper to maintain barrier properties when folded and have better water repellency compared to conventional barrier papers with inorganic compounds in both barrier layers.

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Biodegradable film made from bacterial cellulose with enhanced properties for food packaging applications. The film has a bacterial cellulose matrix with protein entrapped inside. The matrix is coated with a crosslinked layer containing an ionic polysaccharide, polyether, and metal cation. This composite film has advantages like high oil and water resistance, biodegradability, and transparency compared to plain bacterial cellulose. The protein-coated cellulose is made by growing a symbiotic bacteria-yeast colony to produce cellulose, then harvesting and coating it with the ionic polysaccharide-polyether-metal mixture.

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Coated paper packaging material for sensitive products like food that provides barrier properties to oxygen, water, and fat without using halogen-containing compounds or non-recyclable layers. The coated paper has three barrier coatings in sequence: a first barrier layer with a hydrophobic polymer, a second barrier layer with a hydrophilic polymer, and a third barrier layer with a hydrophobic polymer. This sandwich structure provides gas and moisture barrier without using halogen compounds or non-recyclable layers.

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Eco-friendly food packaging with moisture resistance that is easily recyclable and biodegradable. The packaging is made by coating uncoated paper multiple times with a specific composition. The coating composition consists of an acrylic polymer resin with water-soluble properties and an inorganic pigment with hydrophobic properties. The first coat is water-soluble, the second coat is also water-soluble, and the third coat contains both water-soluble and hydrophobic components. This allows the inner coats to dissolve in water when the packaging is composted, leaving the outer hydrophobic coating to protect the paper. The inner coats also enable recycling by dissolving when the paper is processed.

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A liquid-repellent coating composition for preventing adhesion of contents like liquids, semi-solids, and gels to the inner surfaces of containers and packaging materials. The composition contains a polyolefin resin, a silylated polyolefin with incompatible polyolefin sites, and a compatibilizer that has sites compatible with both the polyolefin resin and silylated polyolefin. This allows the silylated polyolefin to disperse and localize on the surface of the coating, providing superior liquid repellency compared to just adding silicone particles. The coating prevents contents from sticking to the inner surfaces of containers and packaging materials.

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Reducing pollution and waste from packaging by using biodegradable bamboo fiber packaging instead of plastic. The bamboo fiber is derived from rapidly growing bamboo plants that absorb more carbon dioxide and produce more oxygen than traditional hardwoods. The bamboo fiber is molded into packaging shapes and coated with beeswax to make it water-resistant. This eco-friendly bamboo packaging can be used for food service items like utensils, containers, and packaging components. It is fully biodegradable and compostable, reducing pollution compared to plastic packaging.

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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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Simplified, cost-effective and scalable method to convert conventional hydrophilic paper into hydrophobic paper with improved water resistance and wet strength. The method involves immersing or spraying paper into a dilute solution of multivalent metal ions like Fe3+, Zr4+, etc, followed by drying. The metal ions coordinate with lignocellulosic fibers to induce hydrophobicity, water resistance and reduced water absorption. The metal-ion-modified hydrophobic paper retains high hydrophobicity, stability and wet strength after washing or storage.

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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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Waterproof paper with improved water resistance compared to existing waterproof papers. The paper has a specific composition and coating weights on both sides that provide excellent water resistance while maintaining smoothness. The key features are: 1. The paper base has pulp with an average Runkel ratio of 0.51 or less to promote smoothness. 2. Both sides of the paper have an undercoat layer containing latex and pigment, followed by a water-resistant layer. 3. The water-resistant layers have coating weights of 4 g/m2 each. 4. The total coating weight of both water-resistant layers is 20 g/m2. This composition allows the paper to have low Cobb water absorption on both sides when exposed to water at 20°C and 90°C. The waterproof paper can be used for packaging containers, cutl

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Water-resistant paper with improved printability, condensation resistance, and water resistance. The paper has a water-resistant layer on one side and an undercoat layer on the opposite side. The undercoat layer has specific smoothness and water absorbency. This allows the paper to have good print quality, prevent condensation, and still be water-resistant on the opposite side from the water contacting surface. The undercoat layer contains latex and pigment, and the water-resistant layer contains polyolefin or acrylic resins. The paper is suitable for packaging containers like cups that have both printed surfaces and contact with liquids.

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A release agent for plastics used in food packaging that reduces adhesion and improves release properties when coated on plastic films and sheets. The release agent is an emulsion of organopolysiloxane with specific surfactants and limitations on cyclic siloxane content. It has average particle size between 100-1000 nm, contains less than 1% each of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, and has a kinetic viscosity of 100-100,000 mS at 25°C. The emulsion stability, wettability, and crack prevention are improved by using a blend of nonionic and anionic surfactants. The low cyclic siloxane content reduces

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Environmentally friendly packaging made from banana tree waste that can decompose naturally. The packaging is produced by extracting the outer layer of banana sheaths, drying them, extruding into sheets, and bonding with rice flour to form a moldable material. The sheets are then hot pressed into shape. To improve water resistance, a rosin solution is coated on the packaging. This provides a biodegradable and compostable alternative to synthetic plastics.

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Containers for food and beverages made from biodegradable thermoplastic resins with improved barrier properties. The containers have surfaces treated with fluorinated carbon or diamond-like carbon layers deposited using plasma processing techniques. The treated surfaces enhance barrier properties like gas transmission rates compared to untreated biodegradable resins. The containers are suitable for industries like food and beverage where biodegradability is desired. The treated surfaces can be formed on containers made from biodegradable polymers like polyhydroxyalkanoates (PHAs) and blends containing PHAs. The fluorinated carbon layers are formed by plasma processes using fluorinated hydrocarbon source gases. The diamond-like carbon layers are formed by plasma enhanced chemical vapor deposition (PECVD) processes.

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Packaging for aerosolized tobacco products that prevents flavor degradation and nicotine transfer. The packaging material has a base paper with coatings on both sides. The top coating is on the inside and the bottom coating is on the outside. The inner coating is on the tobacco side and the outer coating is on the environment side. The inner coating prevents nicotine and flavor transfer from the tobacco. The outer coating is water-resistant to prevent moisture ingress. The tobacco inside the packaging has a pH of 8 or higher to reduce nicotine absorption. This prevents flavor loss during transport and storage. The coated packaging allows easy manufacturing and reduces nicotine leaching compared to aluminum-lined or soft plastic packaging.

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