Such equipment is used for cutting paper?
Finally, with a sharp knife along the fiber plate width on one side of the film will extend into the open, sealing is formed of plastic bags. We used to make plastic bags like this.The fiberboard is about 3-4 millimeters thick and can be replaced with other sheets.
Then put the plastic film along the width direction of fiber board wrapped up, usually wrapped around twenty to fifty layers, the thickness of plastic film and video.
You can find a fiber board or three plywood, the length is longer than the width of the film, and the width of the fiber board should be half of the length of the plastic bag you want to cut.