Please enable JavaScript.
Coggle requires JavaScript to display documents.
Plastics - Coggle Diagram
Plastics
-
Formation techniques
Extrusion
- We put thermoplastic, in granular form, Into a previously heated cynder
- 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.
Lamination
Thermoplastic produced by the extrusion method ls passed through a senes of hot cylinders to produce sheets of varying thtckness senes of hot cylinders to produce sheets of varying thtckness glossy, matt or textured. This depends on the outer coating applied by the final cylinder.
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 against
the instde walls of the shaped mould, and the desired form ts created.
- We leave the mould to cool, then remove the obiect
-
Ecological properties
-
-
Energetic recycling
We can incinerate plastics and the energy that
is produced is used tn industry, for heating or producing electnctty.
-
origin
-
Synthetic plastics
are made from compounds extracted from
petroleum, natural gas and carbon