出典:Wiktionary
出典:『Wiktionary』 (2026/04/27 22:50 UTC 版)
Genericized trademark of Styrofoam, from -styr- (from polystyrene) + -o- + foam.
styrofoam (countable and uncountable, plural styrofoams)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/02 21:59 UTC 版)
Styrofoam is a trademark of The Dow Chemical Company for closed-cell extruded polystyrene foam currently made for thermal insulation and craft applications. In 1941, researchers in Dow's Chemical Physics Lab found a way to make foamed polystyrene. Led by Ray McIntire, they "rediscovered" a method first discovered by Swedish inventor Carl Georg Munters. Dow acquired exclusive rights to use Munters' patents and found ways to make large quantities of extruded polystyrene as a closed cell foam that resists moisture.
![]()