Question

LDPE is generally irradiated before moulding into film.

(a) True

(b) False

I had been asked this question in an interview.

This key question is from Orientation of Thermoplastic Films topic in section Thermoplastic Polymers Properties & Processing of Food Packaging Technology

Answer 1

Correct answer is (a) True

The explanation is: The given statement is true. LDPE is generally irradiated before moulding into film, because radiation cross-links the molecules and the film can be stretched without becoming fluid at the melting point of a non-irradiated film, resulting in greatly improved tensile strength and shrink tension compared to non-irradiated LDPE.