Mylar
/ˈmaɪlɑː(r)/noun
mass noun
- trademark a form of polyester resin used to make heat-resistant plastic films and sheets. It is made by copolymerizing ethylene glycol and terephthalic acid.〈商标〉密拉（一种聚酯树脂, 用于制造防热的塑料薄膜）。
词源
1950s: an arbitrary formation.