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Plastic II (Stone and ceramics (ceramic (Making ceramics, Classification…

- - - - cements
      - Mortar
      - plaster
      - concrete
  - - - • Mould blowing
      - • Float glass making
      - • Lamination
- - - - We apply pressure by means of a large, rotattng screw, whtch forcest he melted matenal out, through a nuzzle.
      - We cool the shaped material slowly In a refngerated water bath until it's solid.
      - We put thermoplastic, in granular form, Into a previously heated cyhnder
      - Finally, we collect the pieces of plastic through a feeder system.
    - - Thermoplastic produced by the extrusion method ls passed through a series of hot cylinders to produce sheets of varying thickness
      - With this technique, we can produce different finishes, for example,glossy, matt or textured. This depends on the outer coating applied by the final cylinder
    - - We then use a heater to heat the mould and soften the plasuc
      - We extract the air below the sheet so that the plastic is pulled against the instde walls of the shaped mould, and the desired form is created
      - We put thermoplasttc into a mould
      - We leave the mould to cool, then remove the obiect
    - - Injection moulding
        
        We tniect melted thermoplastic into a mould
        
        When the material has cooled and solidified, we extract tt from the mould
      - Blow moulding
        
        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.
        
        We put a tubular-shaped piece of plastic into a hollow mould which has the same shape as the oblect that we want to make
      - Compression
        
        The plastic adapts to the shape of the cavity between the two parts of the mould
        
        The outer part of the cavity
        mould, shaped the same, is closed to compress the matenal inside We then heat it and it becomes soft and mafleabie
        
        We extract the oblect when the plastic has cooled and solidified
        
        We put thermostable plastic which can be in granular form, into the base of a cavity mould.
- - - - Standard screw
      - Nut and bolt
      - Double ended screw