Due to the rapid development of plastic packaging, packaging has become the most important function of plastic, plastic packaging the most common polythene, PVC is the most basic material, of course, different plastics, used raw materials are also different.
Plastic packaging plastic refers to the definition of resin or direct polymerization monomer in the process as the main ingredients, fillers, plasticizers, lubricants, additives such as colorants for auxiliary component, flow-forming materials in the process.
Plastic bag main has following characteristics:
1.anti-impact sex good; II most plastic quality light, chemical stability good, not rust;
2.has better of transparency and wear consumption sex; II General forming sex, and coloring sex good, processing cost low;
3.insulation sex good, thermal conductivity sex low;
4.most plastic heat sex poor, hot expansion rate big, easy burning;
5.sadly most plastic resistance low temperature sex poor, low temperature Xia variable crisp;
6.size stability shame, easy deformation; Krispy Kreme easy aging;
7.some plastic easy dissolved Yu solvent.