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Plastics, Extrusora esquema, lamination-equipment-schema, descarga11 -…
Plastics
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Properties of plastics
Strength, elasicity, rigidity, and flexibility are characteristics of many plastics, altought they vary from one type to another
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Ecological properties
Chemical recycling: We apply chemical processes ese telefono parece carpintero make new materials from the original components of plastic residues
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Energetic recycling:we can incinerate the plastic, with the energy they produce we can use it for heating or to produce energy.
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Formation techniques
Extrusion
1-We put thermoplastics, into a previous heated cylinder
2- We apply pressure, wich forces the melted material out, through a nozzle
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4- Finally, we collect the pieces of plastics through a feeder system
Lamination
Thermoplastics produced by the extrusion method is passed through a series of hot cylinders. With this technique we can produce different finishes
VACUUM FORMING
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4-We leave the mould to cool, the remove the object
Moulding
Injection
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2-When the materials has cooled and solidified, we extract it from the mould
Blow
1.We put a tubular-shape piece of plastic into a hollow mould which has the same shape as the object that we want to make
- We close the mould and blow pressurised air into it, so that the plastic adheres to the sides of the mould and takes its shape
- When the object is cold, we remove it from the mould
Compression
- We put thermostable plastic,which can be in granular form,into the base of a cavity mould
2.The outer part of the cavity
mould, shaped the same, is closed to compress the material inside.
- The plastic adapts to the shape of the cavity between the two parts of the mould
- We extract the object when the plastic has cooled and salidified :
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