... pressing device, extruding system, mixed-glue spraying, heating and pressurizing system, sandwich, flat curling, edge rolling, edge-turnover, grooving, edge- ... sandwich panel laminator has a high quality and thick wall rectangular steel welding method, and to get rid of the rust, ... without imitation), thickness= 0.2-0.8mm; 7.The recommended core materials for Sandwich Panel: EPS Panels, XPS Panels and ...