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Single stage stretch blow moulding process is mostly used for small level production.

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in Casting-Forming-Welding II by (119k points)
Single stage stretch blow moulding process is mostly used for small level production.

(a) True

(b) False

The question was posed to me in an online quiz.

My query is from Blow Moulding and Thermoforming in division Moulding with Polymers of Casting-Forming-Welding II

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The correct answer is (a) True

For explanation: Single stage process includes an extruder to inject liquid plastic into the mould where the plastic is cooled to form a preform (tube of plastic). This preform is reheated and placed in the bottle mould. Then it is stretched by using compressed air in the mould cavity. This all processes require too much time to accomplish themselves, so it is only suitable for small level production.

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