In: Mechanical Engineering
A phone housing case is to be manufactured from Polyester Based - Thermoplastic Polyurethanes (TPU) with the manufacturing process of Injection Moulding
**Problem** :
a. Describe how PRESSURE is involved in each stage of the injection moulding process
b. How PRESSURE in the injection moulding process influences the internal structure of the material
c. The defects that could likely be introduced due to PRESSURE in the injection moulding process
d. The mechanical property issues that could be caused if PRESSURE is not correctly controlled during the injection moulding process.