Processing Aids for Package Manufacturing

Anti-stick additives for thermoplastic packaging materials like PE, PP, and PS to reduce adhesion of products like food, cosmetics, and pharmaceuticals. The additives are incorporated into the packaging resins as masterbatches or compounds. The additives can be organic compounds like esters or inorganic materials like hydrotalcites. The additives improve emptying of sticky products from containers by reducing residue left behind. The additives can be mixed into the resin during extrusion and pelletized for subsequent packaging production.

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Food packaging that reduces spoilage and degradation of packaged food by incorporating a specific type of polymer and preservative additive. The packaging material contains a polymer with a low water contact angle, such as Pelestat or a polyamide, along with preservative additives like sorbates, benzoates, or acids. This composition prevents bacterial growth and weight loss in packaged food compared to conventional packaging materials.

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Co-extruded composition to increase hydrophilicity of polystyrene packaging for absorbing liquids like blood and juices from packaged food. The composition contains specific additives like polyethylene glycol, polyglycerol ester, alkaline earth metal carbonate, phyllosilicate, and polystyrene. When co-extruded with polystyrene, it enhances the packaging's ability to absorb liquids compared to traditional polystyrene. The composition can be used in solid non-foamed or expanded polystyrene articles like food trays to improve hygiene and visual appeal by rapidly absorbing liquids released from the packaged food.

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Reduced torque and surface friction internal additives for polyesters like PET used in packaging applications. The additives are food-grade polyglycerol fatty acid esters with high esterification (>50%) to reduce reactivity with polyester. They have low hydroxyl values from fewer accessible hydroxyl groups. The esterified esters have lower torque during extrusion compared to traditional additives like PETS. The esterified esters also reduce surface friction. The concentration is less than 5% in the polymer composition.

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A composite processing aid for plastic films that improves film processability and performance. The aid consists of specific components like an expanding agent, emulsifier, antioxidant, filler, slip agent, and active agent in certain proportions. The aid can replace conventional auxiliaries and additives in film processing to enhance film properties like processability, appearance, and performance while reducing smearing issues.

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