Question

Why is hot-end treatment is done in glass?

(a) To prevent surface damage

(b) To ensure better adhesion and

(c) To strenghthen the surface

(d) To prevent surface damage, ensure better adhesion and strenghthen the surface

I have been asked this question in a national level competition.

Asked question is from Surface Treatment of Glass topic in division Glass Packaging Materials of Food Packaging Technology

Answer 1

The correct answer is (a) To prevent surface damage

The best explanation: Hot-end treatment is done in glass to prevent surface damage. This treatment is done while the container is still hot, strengthens the surface and improves the adhesion of the subsequent cold-end coating.