... zippers in different shape through changing moulds,.3. This machine consists of a main extruder, mould forming, forming ... air-drying device, a zipper sealing device, an automatic winding device, etc.4. Moulds have advantages of flexible ... of zipper0.03-0.22mmScrew diameter45mmHeater 6.8KWMain machine power 5.5 KWPower of cooling water machine3KWPower ... 2000 MM JL-45 Zipper Extruder bag making machine