Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: chris on 11/10/2012 20:57:31

Title: What plastics are used to make ready-meal packets?
Post by: chris on 11/10/2012 20:57:31

What is the plastic material used for microwave-able and oven bake-able ready-meals?

Title: Re: What plastics are used to make ready-meal packets?
Post by: RD on 12/10/2012 01:23:19

poly(ethylene terephthalate), PET ...

Quote

If crystallizable (https://en.wikipedia.org/wiki/Crystallization_of_polymers) PET is used, the trays can be used for frozen dinners, since they withstand both freezing and oven baking temperatures.

https://en.wikipedia.org/wiki/Poly(ethylene_terephthalate)#Uses (https://en.wikipedia.org/wiki/Polyethylene_terephthalate#Uses)

Title: Re: What plastics are used to make ready-meal packets?
Post by: damocles on 18/10/2012 00:06:39

I have just gone to the pantry and looked at one of my packages -- the polymer used in that package is polypropylene.