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Plastic Processing Operator Practice Test: Roto Moulding Techniques
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Plastic Processing Operator Practice Test: Roto Moulding Techniques
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25 Questions

1. Which force act on the mould in rotational moulding?
2. What is the operating temperature range in rotational moulding?
3. Which form of material is used in Rotational Moulding?
4. Why buffing process is done?
5. which polishing method produce a smooth surface on plastic parts?
6. Which material absorb the moisture by polymers?
7. How the speed of rotation is measured in?
8. What is the cycle of process in rotational moulding?
9. What type of mould material is used to make large product?
10. Which buffing process used for contour shape components?
11. What is the forming process of rotational moulding?
12. Which type of roto moulding is used to make prototype product?
13. How the production cost of rotational moulding compare with other type of moulding process?
14. Which material filled in heated hollow mould in rotational moulding?
15. How the mould get heated in rotational moulding?
16. How the buffing process is done?
17. How mould can be cooled in rotational moulding process?
18. Which to be controlled over the length of the cycle to avoid material become degrading?
19. What is main advantage of rotational moulding?
20. Which process makes hollow one-piece item product?
21. What is the purpose of MRA (mould release agent) in the rotational moulding process?
22. What is the name of process to produce mate surface finish?
23. Which buffing compound material used for plastics?
24. Which buffing process entails both cutting action and smoothing action?
25. What to be eliminate when the resin dried at 140°F (60°C) for one hour in rotational moulding?

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