... just one-time, and the Corrugated Roll Forming Machine and the Sandwich Panel Laminator can work independently. ... the Corrugated Roll Forming Machine consists of the uncoiler, cold-bending roll forming machine, cutting device, whereas the Sandwich ... , edge-turnover, grooving, edge-trimming device, pneumatic clamping device, automatic plastic film coating device, automatic cutting, product stacker; 2. ...