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The film after annealing is called ________

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in Food Packaging Technology by (63.0k points)
The film after annealing is called ________

(a) Strict film

(b) Film set

(c) Heat set

(d) Heat film

I had been asked this question during an online interview.

I need to ask this question from Orientation of Thermoplastic Films topic in portion Thermoplastic Polymers Properties & Processing of Food Packaging Technology

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The correct option is (c) Heat set

For explanation I would say: The film after annealing is called heat set. Heat set does not shrink even if heated below the annealing temperature. Heat set has more desirable properties. Annealing results in some reduction in dimension in the stretched direction or directions.

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