青青动漫-青青福利视频-青青国产成人精品视频-青青国产成人久久91网-国产精品一二区-国产精品一国产精品

PE plastic bag can be used in high temperature food packaging2022-01-23

Polyethylene in the PE rubber bag is a waxy-shaped, and the wax is smooth, and when the low density polyethylene is transparent, the high density polyethylene is opaque. If the PE plastic bag uses a PVC material or recovered plastic, there will be a large safety hazard, as such plastic bags contain a large amount of pl……

Simple way to distinguish PVC plastic bag and PE plastic bag2022-01-23

In daily life, people have exposed more plastic bags (membranes), generally PVC (PVC) and polyethylene (PE) plastic film (bag), how to distinguish them, the following summarize several simple methods : 1, touch method: Touch the lubrication with the hand, the surface is like a layer of wax (chemically referred to as a ……

OPP self-adhesive feature2022-01-23

OPP plastic bag material is a material in a rubber bag, which Chinese name polypropylene is polypropylene. Oriented, disguised polypropylene, is a kind of polypropylene. And bidirectional polypropylene (BOPP). OPP rubber bag is stretchable Polypropylene, one of the plastics, is actually a plastic bag, which is characte……

Introduction to CPE matte bag2022-01-23

CPE matte bag alknice CPE rubber bag, referred to as CPE bag, which is a high molecular material prepared by high density polyethylene (HDPE). It is well dispersed, superior to oxidation resistance, and the toughness is also very good, the hand is soft, which is half-transparent. At present, we are widely used in the f……