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In extrusion blow moulding process, it is very difficult to trim away excess of plastics.

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in Casting-Forming-Welding II by (119k points)
In extrusion blow moulding process, it is very difficult to trim away excess of plastics.

(a) True

(b) False

The question was asked in quiz.

My doubt stems from Blow Moulding and Thermoforming topic in division Moulding with Polymers of Casting-Forming-Welding II

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by (701k points)
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Right option is (a) True

For explanation I would say: Extrusion blow moulding process is a type of blow moulding in which air is injected into the neck of container to blow up the plastic material that then occupies the mould cavity. In this method, tooling cost is low but it includes some difficulties in trimming away of excess plastic, it also possess high scrap rate of the plastic material.

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