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Common plastics for thermoforming
 1. PVC (characteristics: less impurity content, better transparency, lower price, good dielectric properties, flame retardancy and self-extinguishing)

2. PP (rich source, cheap price, excellent performance, wide range of uses.
(1) low density (PP colorless, odorless, tasteless, non-toxic, flammable, white appearance, density is 0.90~0.91g/cm3.)
(2) good mechanical properties PP rigidity, excellent elongation, good resistance to stress cracking
(3)better heat resistance
(4) good chemical stability
(5)transparency, water and water resistance
(6) processing and use is strong

3.PE (one of the most widely used plastic varieties, odorless, tasteless, non-toxic, flammable)

4. PS (plastic is hard, brittle, transparent, no smell, black smoke when burning, easy to dye and process, low hygroscopicity, dimensional stability, electrical insulation and thermal insulation.)
(1)high transparency and gloss
(2)coloring, excellent hygiene
(3)excellent dielectric properties
(4)excellent molding performance

Inadequacies:
(1)sexual fragility
(2) poor heat resistance
(3)moisture-proof, poor oxygen barrier

5.ABS (opaque, non-toxic, tasteless)

6.PET (colorless, odorless, tasteless, non-toxic, excellent transparency, excellent mechanical strength, wear resistance and electrical insulation properties, good creep resistance, rigidity and strength. Excellent hygiene makes it Can be in direct contact with food)