... , EPDM, CSPE and TPO materials, such as roofing material, container tents, PVC tarpaulin, PVC water bed, swimming pool, plastic membrane material ... speed (according to tarpaulin thickness and operator’s proficiency), warm-up the machine.3. When temperature reaches the set-value, move ... straight line.5. If the tarpaulin is burnt, please speed up the machine.6. After finishing welding, take out the gun ...