Do you know food contact PET film? -Film supplier

by:POLYVA     2021-11-07
China's polyester industry is developing rapidly, among which polyethylene terephthalate (PET) is widely used to produce spelling, fiber, film and other products. Because of its excellent physical and chemical properties, PET film is widely used in the field of food packaging. However, its monomers, catalysts and other additives, including by-products, are highly toxic substances, and there is a risk of migration. With the progress of petrochemical technology, China has developed rapidly in the polyester industry, and has now become the world's largest production base for polyester products. Among them, polyethylene terephthalate (PET) is widely used in the production of bottles, fibers, and films due to its excellent rigidity, heat resistance, electrical insulation and chemical resistance. PET film has a wide range of uses in electronics, food packaging, and photosensitive materials. Commonly used synthetic methods of PET include the direct esterification method of terephthalic acid (PTA) and ethylene glycol (EG) (PTA method) and the transesterification method of dimethyl terephthalate (DMT) and ethylene glycol (DMT). Law). In the process of polycondensation, PET needs to add catalysts (such as antimony trioxide), stabilizers and other additives or assistants. At the same time, there are by-products (such as diethylene glycol, acetaldehyde and some oligomers) during the esterification reaction. ), and some of these substances are toxic, and will migrate to the contents through packaging materials during contact with food, which will lead to contamination of the contents and further affect the health of consumers. Dong-Joo Kim et al. studied and analyzed the special migration of monomers and oligomers in PET in accordance with the regulations of the European Union and Asian countries. Countries around the world (the European Union, the United States, China, Japan, etc.) have respectively formulated corresponding regulations for the hygiene and safety requirements of PET used for food packaging materials, and stipulated maximum migration limits and restrictions on use requirements for substances with migration risks. Food contact PET hygiene and safety requirements related laws and regulations introduced PET film has excellent physical and chemical properties, such as high strength, good transparency, non-toxicity, good barrier properties, and excellent electrical insulation properties, so it is widely used in the field of food packaging. However, its monomers, catalysts and other additives, including by-products, are highly toxic substances, and there is a risk of migration. Countries around the world have formulated corresponding standards for the hygiene requirements of PET for food contact. Polyethylene terephthalate (PET) commonly used synthetic methods include direct esterification method (PTA method) and transesterification method (DMT method). Because of its excellent physical and chemical properties, it is widely used in food Packaging field. However, the catalysts, stabilizers and other additives or auxiliary agents used in the polycondensation reaction of PET, including the by-products produced by the reaction, have caused widespread concern due to their toxicity and migration risk. The European Union, the United States, China, Japan, etc. have formulated corresponding regulations for the hygiene and safety requirements of PET used for food packaging materials, thereby effectively regulating the development of PET in a healthier and safer direction. It is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide variety of products, affordable prices, and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, and warm and thoughtful service. Interested parties welcome to inquire! Contact: Wen Feng 13728425799
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