... Application:The machine is widely used to weld large size PVC-P, ECB, EPDM, CSPE and TPO materials, such as ... roofing material, container tents, PVC tarpaulin, PVC water bed, swimming pool, plastic membrane material, inflatables jointing ... , high welding precision, limitless welding length. Operation Procedure:1. Stretch the tarpaulin and make it smooth, butt joint the 2 ...