Wax for Package Moisture Protection

Biopolymer blown film with improved processability and reduced blocking for compostability. The film comprises a PHA blend base with higher PHA content than other biopolyesters. This reduces stickiness compared to pure PHA. The film also contains a wax to further reduce friction. The film can further have a slip additive, antiblock additive, and processing aid. The PHA blend base composition and wax help balance friction and blocking properties for processability and compostability.

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Multilayer packaging material for food applications that is biodegradable and compostable. The multilayer has a water-soluble inner layer with oxygen barrier and an outer layer with wax for water vapor barrier. This allows replacing traditional non-biodegradable multilayers used in food packaging. The inner layer prevents oxygen transmission, while the outer layer with wax prevents water vapor transmission. The wax layer minimizes odor migration and can be natural or food-safe wax. The water-soluble inner layer can be made of a crosslinked polymer composition of a water-soluble polymer and PCL.

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Multilayer packaging structure for food applications that is biodegradable and compostable. The multilayer has an inner layer made of water-soluble polymer with oxygen barrier, an intermediate layer with wax for moisture barrier, and an outer layer of water-soluble polymer. The wax layer prevents odor transfer and migration. The multilayer is suitable for food packaging and can be composted after use. The water-soluble inner and outer layers seal the paper base. Crosslinked PVOH/PCL in the outer layer improves oxygen barrier.

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Multilayer packaging structure for food applications that provides improved barrier properties while being bio-degradable and compostable. The multilayer has an inner layer made of a crosslinked mixture of water-soluble polymers like PVOH and PCL, which improves oxygen barrier. An outer layer made of a wax like beeswax provides water vapor barrier. This enables a multilayer with both oxygen and water vapor barrier properties using biodegradable materials.

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Waterproof and oil-proof slurry for cellulose-based biodegradable tableware that is non-toxic and environmentally friendly. The slurry contains paraffin wax, emulsifier, ethyl orthosilicate, polyvinyl alcohol, and water. It is prepared by heating water, adding paraffin, emulsifier, and ethyl orthosilicate to form a solution, then heating more water and adding polyvinyl alcohol to form a second solution, and mixing the two solutions together. The slurry can be applied to cellulose tableware to prevent water and oil seepage without using harmful perfluorinated chemicals.

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Aqueous dispersion composition containing ethylene-carboxylic acid copolymers that reduces blocking during storage while maintaining adhesion properties. The dispersion includes the copolymer, an anti-blocking agent based on wax with a melting point of 80°C or less, and water. The wax content is at least 5% by weight relative to the copolymer. This wax composition helps prevent sticking of the dispersion during storage by reducing blocking forces.

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Biodegradable packaging for honey made from a mixture of sodium alginate and beeswax that provides longer shelf life and antifungal protection compared to traditional packaging. The alginate-beeswax films are used to package honey from bees. The films have improved barrier properties and antifungal activity due to the beeswax component. The alginate-beeswax films prevent moisture loss and contamination better than alginate films alone, preserving the honey quality for longer.

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A hot melt adhesive for high speed packaging of coated substrates like film-coated cardboard. The adhesive formulation has specific proportions of high molecular weight resin, wax, oil, tackifying resin, and antioxidant. The wax is modified polyester wax with shorter chain carboxylic acid groups. This provides improved adhesion and curing speed on coated substrates compared to traditional waxes. The modified wax, along with the other components, enables high speed packaging of coated materials like film-coated cardboard without compromising adhesion.

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Laminate for food packaging that provides excellent barrier properties, aroma confinement, and recyclability. The laminate has a coating layer on at least one surface of a paper substrate. The coating contains a polymer with ethylenically unsaturated monomers, wax, and a silicone antifoaming agent. The wax is paraffin wax and/or polyethylene wax. The coating amount is 0.5-10 g/m2. The coating contains 0.005-1% silicone antifoaming agent based on the coating weight. The coating has 35-80% aromatic ethylenically unsaturated monomers. This coating provides water resistance, oil resistance, seasoning resistance, blocking resistance, microwave resistance, and air shielding for food packaging. The air shielding prevents

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Coated paper for use as packaging that is heat-sealable, sustainable, and environmentally friendly. The coating on one side of the paper is made from a wax and a biodegradable polymer like polyester, polysaccharide, or polysaccharide derivative. The paper is extensible and can be made by applying the coating emulsion to a compressed cellulose layer. The coating provides barrier properties, hydrophobicity, and sealability without using ecologically undesirable components. The coated paper can replace single-use plastic packaging.

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Polymer compositions containing biobased polyethylene wax made from renewable resources like plant materials. The compositions can be used in applications like hot melt adhesives, coatings, cosmetics, and packaging. The biobased PE wax can replace traditional petroleum-based waxes. It has lower carbon footprint and enables using renewable resources in polymer applications. The biobased PE wax can be combined with other polymers, fillers, additives, and modifiers to create functional compositions for various applications.

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A manufacturing method for aluminum vacuum packing material with built-in rust prevention and anti-static properties. The method involves mixing rust inhibiting agents like calcium benzoate, potassium sorbate, sodium caprylate, glyceryl monostearate, zinc oxide, and silicon dioxide to make a vaporizable rust preventive agent. This agent is mixed with high MFR polyethylene wax and sprayed between the aluminum foil and sack during packaging. The wax contains the vaporizable rust preventive agent and helps adhesion. The wax also has antistatic properties. This eliminates the need for separate rust prevention coatings or adhesives. The vaporizable rust preventive agents evaporate during vacuum packaging to protect the contents.

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A multilayer water-dispersible article with improved barrier properties against moisture. The article has a water-soluble polymer layer and a separate wax coating layer. The wax layer is sandwiched between the polymer layer and the environment. The wax coating improves moisture barrier compared to just the polymer layer. The wax is present in an amount of 5-30 phr based on the polymer. The article has <20 g/m2/day water vapor transmission rate.

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A method to produce almost gastight and watertight packaging for food applications using natural materials. The method involves coating a cellulose-based substrate with a biodegradable coating to increase gas-tightness. This first coating can be made of microfibrils or nanofibrils of cellulose. A second waterproof coating is then applied, composed mainly of animal and/or vegetable waxes and/or lipids. This second coating provides additional gas-tightness to make the packaging suitable for long-term storage of food items. The combination of the biodegradable cellulose coating and the waterproof wax coating allows for natural, sustainable packaging that can replace some plastic packaging in applications like food packaging.

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Water-based heat sealant for paper containers that replaces plastic films in paper cups and other containers. The sealant is an aqueous dispersion containing an olefin-α, β unsaturated carboxylic acid copolymer, wax, and water. It provides waterproofing, strength, and recyclability without plastic films. The sealant is applied to at least one paper surface, softened by heating, and forms a bond when pressed together. The sealant can be used in paper containers instead of plastic films to create a fully paper container that is recyclable and biodegradable.

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A method to prepare special wax for waterproof packaging that provides better water resistance compared to conventional waxes. The method involves adding resin additive, synthetic wax, polymerization assistant, antioxidant, and polyvinyl chloride to the wax material. The components are repeatedly heated and stirred to fully mix and evenly distribute them in the wax. This improves the waterproof properties of the packaging wax.

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An anti-mildew wax for corrugated cardboard packaging that prevents mold growth without using toxic or corrosive additives. The wax is made by mixing specific proportions of semirefined paraffin wax, polyethylene butyral, stearic acid, and polyvinyl alcohol. The wax is applied to the outer surfaces of corrugated boxes to prevent mold growth during storage and transportation. The wax formulation contains no harmful chemicals, is non-corrosive, and provides long-lasting mold protection without adhesion issues.

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A waterproofing composition made from natural plant-derived waxes that can replace polyethylene coatings on paper products like cups, pods, and straws. The waxes have melting points higher than hot beverage temperatures to prevent melting. The composition adheres well to paper and cardboard to provide waterproofing without separating like PE coatings do. It allows regeneration of disposable items like cups, pods, and straws by using biodegradable materials that can be recycled together.

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Water-based heat-sealable coating for paper food packaging that is oil-resistant and can replace plastic coatings. The coating composition contains 20-31% acrylic styrene copolymer emulsion, 31-41% modified pure acrylic emulsion, 4-6% palm wax emulsion, 30-40% diluent, and 0.62-1.65% auxiliary agent. The coating is applied to paper food packaging materials to create a net-like oil-resistant film that reduces oil penetration. It provides oil resistance, heat sealability, drop recovery, and meets food contact standards. The coating can be used on paper cups and bags as an alternative to plastic coatings.

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Aluminum foil paper coating bonding wax that can be used in all seasons for packaging applications. The wax formula balances initial tack, holding tack, cohesiveness, releasability, low temperature resistance, and high temperature resistance. It uses specific combinations of waxes, polymers, oils, tackifiers, and antioxidants to achieve these properties. The waxes include paraffin wax, polyethylene wax, Fischer-Tropsch wax, and microcrystalline wax. The polymers are polyolefins and random olefin copolymers. The oils are mineral oil and white oil. The tackifier is petroleum resin. The antioxidant is hindered phenolic antioxidant.

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