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Which of the following is used for microwave ovenable trays?

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in Food Packaging Technology by (63.0k points)
Which of the following is used for microwave ovenable trays?

(a) PVC

(b) HDPE

(c) PET

(d) PS

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This interesting question is from Food Packaging Materials in portion Food Packaging Materials, Packaging Standards and Regulation Laws of Food Packaging Technology

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Best answer
The correct choice is (c) PET

The explanation: PET (Polyethylene Terephthalate) is used for microwave ovenable trays. It is also used for “boil‐in‐the‐bag” products which are frozen before use. It has a oriented crystalline structure (35-45% crystallinity), making it stable upto 140-160°C.

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