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PLASTICS plasticoo - Coggle Diagram
PLASTICS 
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2.3. Elastomers
Made by vulcanisationi mixing sulphur and rubber, and heating to (60'C.
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3.Formation technique
When we manufacture plasttc obiects ln Industry, the plastic Is avadable In three different forms, powder, granules and resins.
3.1. Extrusion
- We put thermoplastic, in granular form, Into a previously heated cyhnder.
- We apply pressure by means of a large, rotattng screw, whtch forces the melted matenal out, through a nuzzle.
- We cool the shaped material slowly In a refngerated water bath until
lt's solid.
- Finally, we collect the pieces of plastic through a feeder system.
3.2. Lamination
Thermoplastic produced by the extrusion method ls passed through a
senes of hot cylinders to produce sheets of varying thtckness.
3.3. Vacuum forming
- We put thermoplasttc into a mould
- We then use a heater to heat the mould and soften the plasuc.
- We extract the air below the sheet so that the plastic ts pulled against
the instde walls of the shaped mould, and the desired form ts created
- We leave the mould to cool, then remove the obiect
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