Flashcards
Plastics Manufacture
Cards in this deck (15)
- 1What does Lamination do?Gives additional protection from wear or
the weather/moisture - 2What does the cold process of lamination involve?Self adhesive plastic
- 3What does the hot process of lamination do?Heats the plastic until it sticks to
the paper/card - 4What is the most important method of plastic production?Injection Moulding
- 5How does Injection Moulding work?Plastic granules are heated then under pressure injected into a mould cavity
- 6What are the disadvantages of injection moulding?High mould cost means IM is only suited to mass production
- 7What are the advantages of injection moulding?-Rapid cycle time
-Very efficient, no waste material
-Objects require no finishing
-Uses thermoplastics - 8Describe the process of vaccuum forming1-Sheet plastic heated until it goes soft
2- Soft plastic is placed over a mould
3-Mould is raised, then air removed to form a vacuum
4-The plastic is cooled using fans to reduce cycle time - 9Describe the process of line bending?1-Plastic placed across a heated element
2-Plastic goes soft and is bent to the desired angle - 10What scale of production is line bending suited to?Small scale and Batch production
- 11Name an advantage of line bendingSimple process
- 12What do jigs do to help line bending?Enable angles/shapes to be made with consistency and accuracy
- 13Describe the process of blow moulding1-Preform is injection moulded
2-Preform is heated then blown out to final form
3-Final plastic form is allowed to cool then released from the mould - 14Name an advantage of blow mouldingCycle time is just seconds
- 15What does blow moulding manufacture?Hollow forms such as bottles
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- GCSE Graphics Revision for plastics manufacture
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- I Turner
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