Small film blowing machine (laboratory test, film blowing machine, film blowing machine type film blowing machine) generally refers to the screw diameter of small 20-25 film blowing machine, mainly used in the manufacture of new materials research and development, early detection of film coloring, additives added properties of products.

Due to the small size of the film blowing machine screw diameter is relatively small, relatively weak shear, shear heat is small, in the blowing low pressure film, especially the melt index is relatively small, low pressure film, to master the appropriate process temperature. General homogenization section, die temperature to 240-250 (Celsius), with melting index is relatively low pressure resin, the temperature can reach 270-280 (Celsius).

Otherwise, the product is not fully plasticized, will produce a lot of crystal points.