... water at a constant temperature, a dehydrating device, an air-drying device, a zipper sealing device, an automatic ... zipper at constant temperature, a dehydrating device, an air-drying device, and a standalone zipper sealing device.JL45B ... 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