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PLASTICS - Coggle Diagram
PLASTICS
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Formation techniques
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Lamination
Thermoplastic produced by the extrusion method ls passed through a
senes of hot cylinders to produce sheets of varying thtckness
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Extrusion
, we collect the pieces of plastic through a feeder system
Clasification
Thermostable plastics
These plastics are made from compounds dertved from petroleum They are formed by strongly-linked chams runmng in different directions
Elastomers
Made by vulcanisationi mixing sulphur and rubber, and heating to (60'C. They are hard, resistant and very elastic — stretching easily under force.
Thermoplastics
We manufacture thermoplastics from compounds acquired from petroleum They' re made up of weakly formed molecular chains.
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Stone and ceramics
These are materials found in nature as large blocks of rock within the Earth. For example, marble, granite and slate. We can also find them in different-sized granules and fragments, sui.h as sand and graveL
Joining plastics
When plastics have been formed, shaped and finished, we can loin
pieces to each other The loints can be permanent or temporary
Temporary joints. We can loin and then separate objects with mechanical fasteners. nut and bolt, standard screw and double ended screw
Permanent joins. We use this type of joint when we don't want to separate or dismantle
the pieces We can use adhesives or soldenng
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