Question

Which of the following is not a type of blow molding process?

(a) Injection blow molding

(b) Extrusion blow molding

(c) Multi-smaller blow molding

(d) Multi-larger blow molding

I had been asked this question by my school teacher while I was bunking the class.

This interesting question is from Blow Moulding and Thermoforming in chapter Moulding with Polymers of Casting-Forming-Welding II

Answer 1

Right answer is (c) Multi-smaller blow molding

The best explanation: Blow molding basically is a process of inflation of air under pressure into the plastics inside the mold cavity. There are only three known types of blow molding, namely, injection blow molding, extrusion blow molding and multi larger blow molding.