This is the zipper bag film blowing machine, specially designed for producing plastic film for self-sealing bags. It adopts advanced extrusion and film blowing technology, with stable extrusion and uniform film thickness. Equipped with our high-quality blow film die head, it can produce smooth, wrinkle-free PE film for self-sealing bags. The machine features simple operation, stable running and low failure rate. It is widely used to produce PE self-sealing bags for packaging food, hardware, daily supplies and electronic parts. Custom specifications of machine and die head are available.