2.3 plastic plastic (plastic) or resin is used widely in the world, the plastic heating
.Will fall, and after cooling down curing, can change the image. This kind of plastic is a long straight chain molecular structure There is a connection between the polymer chains. So can smelt
.When through the compression strength will not destroy the original structure, for example, polyethylene, and polypropylene
พอลิ styrene special treasure. When melted and can be used in forming recycling
.A kind of plastic in the thermoplastic such as polyethylene (Polyethylene: PE) is a plastic vapor which through a little but air to pass out. The opaque and heat resistant mod
.Plastic is used most in the industry, such as water tank bag, bottle, the support the goods
polypropylene (Polypropylene:PP) is a plastic vapor permeability slightly. More solid fatty substance and high heat resistant polymer used to make plastic sheet plastic food packing ที่ทน hot plastic syringe. Polystyrene. (Polystyrene:PS) was transparent, brittle, acid and alkali resistance,
, steam and air permeable, mod Used to do electrical parts and electronic
.Office supplies, etc. SAN (styrene-acrylonitrile) is a transparent plastic, automotive electrical appliances auto parts. A
.
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