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A phone housing case is to be manufactured from Polyester Based - Thermoplastic Polyurethanes (TPU) with...

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Question

Mechanical Engineering

A phone housing case is to be manufactured from Polyester Based- Thermoplastic Polyurethanes (TPU) with the manufacturing processof Injection Moulding

**Problem** :

a. Describe how TIME is involved in each stage if the injectionmoulding process

b. How TIME in the injection moulding process influences theinternal structure of the material

c. The defects that could likely be introduced due to TIME inthe injection moulding process

d. The mechanical property issues that could be caused if TIMEis not correctly controlled during the injection mouldingprocess.

Answer & Explanation Solved by verified expert
4.0 Ratings (504 Votes)
a There are four main stages in Injection Moulding process and the whole injection moulding process usually takes 2 seconds to 2 minutes depending on the product to be manufactured i Clamping Both the female half and the male half of the mould has to be clamped before the material is injected into the mould The molten material is then fed into the mould Machines which have higher power consumption usually take longer time to clamp ii Injection The injection unit feeds the material through the heated barrel into the    See Answer
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