In order to prepare polyester film with high heat shrinkage rate, copolymerization modification is required-technical knowledge

In order to prepare polyester film with high heat shrinkage rate, copolymerization modification is required. Source: Protective film factory direct sales Time: 2019-10-07 Click: 1608 Polyester heat shrinkable film is a new type of heat shrinkable packaging material. Because it is easy to recycle, non-toxic, odorless, good mechanical properties, especially in line with the characteristics of environmental protection, but ordinary polyester is a crystalline polymer, ordinary PET film can only get less than 30% of heat through special processing Shrinkage. To obtain a polyester film with a higher heat shrinkage rate, it must also be modified. That is to say, in order to prepare a polyester film with high heat shrinkage, it is necessary to copolymerize and modify ordinary polyester, namely polyethylene terephthalate. The highest thermal shrinkage rate of the PET film modified by copolymerization can be as high as 70% or more. Foshan Bowei Environmental Protection Material Co., Ltd. is an electronic material supplier with 20 years of experience. It can produce PET film with multiple functions, such as: sub-(matte) PET film, flame-retardant (fire-resistant) PET film, inkjet printing Film, anti-static PET film, anti-fog PET film, anti-UV PET film, non-shrinking PET film, PET release film, optical PET film, etc. Interested parties welcome to inquire!