1. Different components
Polyethylene, abbreviated as PE, is a polymer compound formed by the polymerization of ethylene monomers;
Polyvinyl chloride, abbreviated as PVC, is a polymer compound formed by the polymerization of polyvinyl chloride monomers.
2. Different characteristics and applications
PE characteristics and applications
(1) Poor gas barrier and oil resistance - fresh fruits and vegetables, not in contact with oily foods;
(2) Poor transparency and poor printability;
(3) Poor high temperature resistance - cannot be used for high-temperature sterilization;
(4) Good water and moisture resistance - moisture-proof and dry food;
(5) Good flexibility and heat sealing performance - heat sealing layer for composite materials;
(6) Good low-temperature resistance - suitable for freezing treatment;
(7) Safe and non-toxic;
Characteristics and Applications of PVC
(1) Poor resistance to high and low temperatures: used at temperatures of -15-55 ℃, brittle at low temperatures, decomposed at high temperatures (>100 ℃), cannot be used for high-temperature sterilization or freezing treatment;
(2) PVC resin itself is non-toxic, but residual monomer vinyl chloride has anesthetic and teratogenic effects, and the PVC content in the material should be strictly controlled.
(3) Good chemical stability and mechanical properties, with better transparency and gloss than PE,
(4) Gas resistance and oil resistance are better than PE, while moisture resistance is lower than PE;
