可热封双向拉伸聚酯薄膜简介

Brief introduction of heat sealing biaxial orientation PET film

在聚酯生产过程中,采用第三或第四组分进行共聚改性,破坏或降低其结晶结构,便可具有可热封性能。以三层共挤结构为例,叙述了可热封双向拉伸聚酯薄膜的生产工艺,并将其主要性能与BOPP,CPP薄膜的进行对比。

By using the third or fourth component to carry out copolymerization modification in PET production process, the crystal structure of PET can be damaged or decreased. Then it has heat sealing performance. Taking the three layers co-extrusion （A/B/C） structure as an example, the filming technology of heat sealing biaxial orientation PET film is described. The main properties of heat sealing BOPET,BOPP and CPP film were compared.