Because of its good barrier, fresh-keeping, moisture-proof, frost-proof, oxygen-proof and oil-proof, the membrane made by bubble membrane machine can be widely used in light and heavy packaging. Such as a variety of fresh fruits, meat products, pickles, fresh milk, liquid beverages, medical supplies and other fields are widely used. In order to facilitate the extraction and blowing of the film, the temperature of the bubble film machine needs an optimal temperature, and how to control the temperature?

According to the melting theory of plastics, the extruder screw of blown film can be divided into three sections: feeding section, melting section and homogenizing section. At the end of the feeding section and at the beginning of the melting section, according to the melting theory, its temperature should be viscous flow temperature. The viscous flow temperatures of various blowing resins are PP: 164 - 175 degrees Celsius, PE: 105 - 135 degrees Celsius and PA: 195 - 210 degrees Celsius, respectively. Environment determines the quality of products.