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Plastics

Plastics. There are two main types of plastic... Thermosetting Plastics Thermoplastics. Thermoplastics. Thermoplastics – C an be moulded into shape Can be re-moulded if you heat them again. There are four main types: Acetate Polypropylene High Impact Polystyrene (HIPS)

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Plastics

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  1. Plastics

  2. There are two main types of plastic... • Thermosetting Plastics • Thermoplastics

  3. Thermoplastics • Thermoplastics – • Can be moulded into shape • Can be re-moulded if you heat them again. • There are four main types: • Acetate • Polypropylene • High Impact Polystyrene (HIPS) • Polyvinyl Chloride (PVC)

  4. Acetate – • Flexible • Hard • Shiny • transparent or translucent. • It is easy to print on. I – See - Tate Used for packaging where the product needs to be seen

  5. Polypropylene – • Strong • Tough • Flexible • Can be made with a ‘living hinge’. Proper – Strong – Plastic Used to make Tupperware, lunch boxes, Used to make chairs

  6. Polyvinyl Chloride (PVC) – • Cheap • durable, but quite brittle • It easy to print on Cat Women - blisters on her feet She’s electric Used for Blister packs Used for insulation for electrical wiring

  7. High Impact Polystyrene (HIPS) • Rigid • Comes in variety of colours Comes in variety of thicknesses Shake your HIPS when you vacuum Used for making boxes for products Used for vacuum forming

  8. Other types of plastic... • Acrylic – • Door signs, • Shop signs • Key rings

  9. Plastic can also be used for modelling... • There are three main types of modelling plastic • Corrugated plastic sheet • Styrofoam • Machining foam

  10. Corrugated plastic sheet – • Lightweight • Rigid • Weather proof • can be bent into shapes Good for modelling objects with large flat areas. Used to make outdoor signage – estate agent signs • Styrofoam – • Light weight • Dense / Solid Very good for making 3D models

  11. Machining foam – • More compact than Styrofoam. More dense / solid. • Can work on it with machine tools without it crumbling. • Can make detailed pieces that can be painted.

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