Function: the machine design for canvas material products welding. such as:tent, ceiling, truck covers, bath curtain,and so on all include PVC material products welding. Specialty: 1.Adopt PLC control system. 2.Automatic running, automatic feeding material. 3.One weld line, once time finishi, the line trimness. 4.Welding speed:5-10m per minuters. 5.NL-5557 sparking tube safeguard system.