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Which of the following polymer is used as a shrink film for foods and snacks?

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in Food Packaging Technology by (63.0k points)
Which of the following polymer is used as a shrink film for foods and snacks?

(a) PE

(b) PP

(c) PVC

(d) Polyolefin

I had been asked this question during an internship interview.

The query is from Thermoplastic Polymers in chapter Thermoplastic Polymers Properties & Processing of Food Packaging Technology

1 Answer

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Right answer is (d) Polyolefin

Explanation: Polyolefin films are used for shrink wrapping of foods, snacks and retail items. It is a clear film that shrinks evenly in all directions. This film allows scents to permeate it. Since it requires high temperatures to shrink the film, it’s often applied with a shrink wrap machine which increases productivity and allows items to be bundled together.

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