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Plastics, polymerisation., image, image, image, image, image, image, image…
Plastics
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Properties of plastics
mechanical
malleability, ductility, mechanical resrstance
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other properties
low density, impermeability
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Formation techniques
Extrusion
- We cool the shaped material slowly In a refngerated water bath until
lt's solid.
- We apply pressure by means of a large, rotattng screw, whtch forces
the melted matenal out, through a nuzzle.
- Finally, we collect the pieces of plastic through a feeder system.
- We put thermoplastic, in granular form, Into a previously cyhnder
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Vacuum forming
- 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 put thermoplasttc into a mould.
- We leave the mould to cool, then remove the obiect
- We then use a heater to heat the mould and soften the plasuc.
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Ecological properties
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Energetic recycling.
We can incinerate plastics and the energy thatis produced is used tn industry, for heating or producing electnctty.
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