Kashrut – Shrinky sheets
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Question
Bs"d
I would like to ask about Shrinky sheets – rigid plastic sheets that shrink and harden when baked, used as a craft activity for children (a picture is attached).
1. Is it permitted to bake them in an oven / toaster oven / microwave, or is some special koshering required?
2. If this is forbidden and we have already done so in the past, what must be done with the appliances?
Attached File
I would like to ask about Shrinky sheets – rigid plastic sheets that shrink and harden when baked, used as a craft activity for children (a picture is attached).
1. Is it permitted to bake them in an oven / toaster oven / microwave, or is some special koshering required?
2. If this is forbidden and we have already done so in the past, what must be done with the appliances?
Answer
Shalom u‑veracha
1. It is permitted. It is only plastic. [Even if, hypothetically, some non‑kosher substance were put into it, it would be completely spoiled].
2. There is no need to do anything.
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