Well, nearly all foam is plastic-based. So find a plastic you like, and search for "[plastic name] foam" using your preferred search engine. The common fabrics

Well, nearly all foam is plastic-based. So find a plastic you like, and search for "[plastic name] foam" using your preferred search engine. The common fabrics people wear are thermoplastics - nylon and polyester. Just like with Pyrex glass (borosilicate), doping plastics makes them way more resistant to the elements. Brominated and fluorinated plastics are extremely chemically and heat resistant. This is in comparison to cheaper, weaker plastics like polystyrene (styrofoam) - which shouldn't even be used near food, but is still often used for takeout containers and disposable cutlery. Unfortunately it degrades with moderate heat and leeches endocrine disruptors into the food. Whenever I buy anything plastic, that I'll use with food, I get consumer grade high density polyethylene (HDPE) or polypropylene (PP.) If you did want the maximum extra resist, which translates into lifetime against decay, use a fluorinated plastic like Polyvinylidene fluoride (PVDF.) PVDF is used on the roofs of some of the tallest buildings in the world. High-performance plastics: https://en.wikipedia.org/wiki/High-performance_plastics https://en.wikipedia.org/wiki/High-performance_plastics Plastics chemical resistance comparison: https://www.curbellplastics.com/Research-Solutions/Chemical-Resistance-of-Plastics https://www.curbellplastics.com/Research-Solutions/Chemical-... PVDF Foam: https://www.zotefoams.com/product/zotek/zotek-f-lightweight-pvdf-foam/ https://www.zotefoams.com/product/zotek/zotek-f-lightweight-... Polypropylene: https://en.wikipedia.org/wiki/Polypropylene https://en.wikipedia.org/wiki/Polypropylene HDPE: https://en.wikipedia.org/wiki/High-density_polyethylene https://en.wikipedia.org/wiki/High-density_polyethylene PVDF: https://en.wikipedia.org/wiki/Polyvinylidene_fluoride https://en.wikipedia.org/wiki/Polyvinylidene_fluoride