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The crystallization behavior of PET polyester film mainly occurs above the glass transition temperature and below the melting point temperature. The polyester can only partially crystallize, and the crystalline and amorphous regions exist at the same time, and each molecular chain runs through many crystalline and amorphous regions. Moreover, in the amorphous region, the molecular chains are coiled and entangled with each other. The crystalline morphology structure of polyester is multi-layered, which mainly includes amorphous state, lamellae, spherulites, molecular chain orientation and crystalline orientation. The crystallinity of polyester film can reach up to 55% in the final product, so the term semi-crystalline product of polyester film. 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!