Question

What is the minimum thickness required by the plastic for vacuum forming?

(a) 0.125 mm

(b) 0.25 mm

(c) 0.375 mm

(d) 0.5 mm

The question was asked in an interview for internship.

This intriguing question comes from Blow Moulding and Thermoforming in portion Moulding with Polymers of Casting-Forming-Welding II

Answer 1

The correct option is (a) 0.125 mm

The best I can explain: Vacuum forming is one of the classifications of thermoforming processes. Around its circumference, a clamp is attached or we need to know the minimum thickness. The minimum thickness that can be allowed for this operation is 0.125 mm.