Lab blown film machine (Lab blown film machine, experimental blown film machine) usually refers to a small blown film unit with a screw diameter of 20-25. It is mainly used for the research and development of new materials, film coloring, and various kinds of assistance. Pre-inspection of the finished product function after the agent is added.
Because the diameter of the screw of the mini blown film machine is relatively small, the shearing is relatively weak, and the shearing heat is small. When blowing a low-pressure film, especially a low-pressure film with a relatively small melt index, it is necessary to grasp the proper technical temperature. Usually the homogenization section, the temperature of the die should be 240-250 (degrees Celsius), and the temperature can reach 270-280 (degrees Celsius) when comparing the low-low pressure resin with the melt index. Otherwise, the finished plasticization is not sufficient, and many crystal points will occur.
