Polyester is a generic term for thermoplastic saturated polyesters represented by PET, including PBT, PEN, PCT, and their copolymers, of which PET is the earliest developed, most productive, and most widely used polyester product. Polyester PET bottles are an important polyester product. Recently, the industry has invented new technologies that use epoxy materials to modify the properties of polyester PET bottles.
PET can be quickly obtained by the rapid cooling method is basically in amorphous, highly transparent, easy to stretch PET products, so when used as packaging materials, basically all use of stretch blow molding, which is the most widely used Small bottles of ten to two liters and large bottles of 30 liters. In beverage packaging, the most successful PET bottles are carbonated soft drinks such as Coke and Sprite. It can also be used as edible oil packaging, flavoring product packaging, beer packaging and so on.
PET bottles have been rapidly developed in competition with other packaging materials (glass, tin, PE, PVC, etc.) for their superior performance, low cost, and adaptability to environmental protection, but their heat resistance The poor gas barrier property limits its application in hot filling and high air tightness applications, and has attracted great attention. In the process of improving and improving its performance, polyester packaging has achieved new development. Modification mainly starts with improving heat resistance and improving gas barrier properties. According to reports, this product uses a special treatment method to improve the gas barrier properties, and the epoxy barrier layer is applied to the inner or outer layer of the PET bottle and can receive very good results.
Source: National Plastics Processing Industry Information Center