polyethylene

It's worth noting that this paper refers to polyethylene glycol, which is not the stuff plastic bags are made from.

The solids with the highest hydrogen density, like polyethylene ([C2H4]n), would be less power-dense, but not by much.

So for example a 1um laser might not heat white polyethylene enough while it would melt black ABS.

Says that bags made from polyethylene (PE) are safe while bags made from polyvinyl chloride (PVC) are not.

Generally food and beverage containers are made from polyethylene or polypropylene because these plastics are very inert.

Since the proposed roadways were going to use recycled polyethylene pop bottles it shouldn't be a problem.

Unpolymerized polyethylene is just a simple flammable gas, a very close cousin of propane / butane.

That will almost certainly be polyethylene, which doesn't contain any plasticizers like BPA or BPS.

So if you need to use plastic bottles, use ugly polyethylene or polypropylene ones.

Pure polyethylene is about as chemically exciting and reactive as asphalt, for example.

Most plastic bottles, for example, are made of various kinds of polyethylene instead.

If it is that easy then why aren't bottles made from polyethylene?

As others have said, the safest "plastic" containers are the low surface energy thermoplastics, polyethylene or polypropylene.

Polyethylene terephthalate (PET - commonly used for soda bottles) can withstand direct sunlight for 5 years.