Polystyrene packaging. Expanded polystyrene chips each in the shape of an "S". These are widely used as a thermally-insulating and protective packaging material. Polystyrene is the polymer form of styrene (phenylethene or vinylbenzene) which resembles a glassy resin. Expanded polystyrene,as seen here,is made porous and is expanded with trapped gas | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Hart-Davis, Adrienne |
Bildgröße: | 4995 px × 3958 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |