随着科学的发展和技术的进步,聚对苯二甲酸乙二醇酯(PET)的用途不再主要局限于纤维,而是进一步拓展到各类容器、包装材料、薄膜、胶片、工程塑料等领域,目前,PET 正在越来越多地取代铝、玻璃、陶瓷、纸张、木材、钢铁和其他合成材料。 PET 挤出发泡工艺及其应用逐渐引起人们的关注,因为在包装材料及许多需要较高温度的应用 With the development of science and technology, the use of polyethylene terephthalate (PET) is no longer confined mainly to fibers, but is further expanded to various types of containers, packaging materials, films, films, engineering plastics, etc. At present, PET is increasingly replacing aluminum, glass, ceramics, paper, wood, steel and other synthetic materials. PET extrusion foaming process and its application gradually attracted people’s attention because of the packaging materials and many applications that require higher temperatures