PS Foam Sheet Extrusion line 1. Makes PS foam sheet 2. CE & ... series high foam technology.The raw material is general polystyrene granule (GPPS). In the extruding process, foam agent ( ... , foaming, cooling, shaping and hauling off, it is winding to finished ps foam sheet rolls.After vacuum ... ,instant noodle bowl ,foam tray etc. It is widely used in the packing for food, fruit, and advertising industrial ...