The significance of plastic code

　　The significance of plastic code

　　Plastic additives also known as plastic additives, polymer （synthetic resin） was when processing for some compounds to improve its processing function or must be increased in order to improve the performance of resin. For example, in order to forming temperature drop of PVC resin, the product is soft and adding plasticizer; and as for the preparation of light weight, heat insulation, sound insulation, vibration resistance of the foam to increase foaming agent; some plastic heat temperature and molding temperature differentiation is very near, does not participate to forming heat stabilizer. Therefore, plastic additives in the plastic molding process into a very important position in a bag.

　　Abbreviations and symbols of plastics - code and the corresponding title is shown as follows:

　　Polyester -- 01 - PET （bottle）

　　High density polyethylene -- 02 - HDPE

　　Polyvinyl chloride -- 03 - PVC

　　Low density polyethylene -- 04 - LDPE

　　05 - PP （polypropylene -- ability to temperatures above 100 degrees）

　　Polystyrene -- 06 - PS （thermal 60-70, charging and hot drinks can produce toxins, burning will release styrene）

　　Other plastic code -- 07 - Others

　　The PP, PE, PVC is the abbreviation of English title. Chinese title are polypropylene, polyethylene, polyvinyl chloride, English name are:

　　Polypropylene, polyethylene, polyvinyl, chloride.