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 temperature is involved in each stage of theinjection moulding process
b. How temperature in the injection mouldingprocess influences the internal structure of the material
c. The defects that could likely be introduced due totemperature in the injection moulding process
d. The mechanical property issues that could be caused iftemperature is not correctly controlled during the injectionmoulding process.

Answer & Explanation Solved by verified expert

3.8 Ratings (710 Votes)

a The unprocessed plastic generally in the form of small rounded compressed mass is delivered into the injection mold and progressed in the direction of the mold from the injection portion During this operation the material is liquefied utilising heat and pressure This melt temperature is significant in each stage of the injection molding process Next is the mold temperature which is the final temperature of the See Answer

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