Product Information PVC 70-80 This machine is used for welding zipper screen to weld pockets and zippers, and it can also be used for indoor roller blinds welding. This machine is a double-side multifunctional welding machine, with one side used for welding pockets and the other side used for welding zippers.Both sides work independently and they can work at the same time. Adopting touch screen control and CNC adjustment of pocket size, the operation is simple and convenient.