The film made by the bubble film machine can be widely used in light and heavy packaging due to its good barrier properties, preservation, moisture resistance, frost resistance, oxygen insulation and oil resistance. Such as various fresh fruits, meat food, pickles, fresh milk, liquid beverages, medical supplies and other fields are widely used.
When the bubble film machine is produced, according to the melting theory of plastics, the extruder screw of the blown film is divided into three sections: the feeding section, the melting section, and the homogenizing section. At the end of the feeding section, at the beginning of the melting section, according to the melting theory, its temperature should be the viscous flow temperature. The viscosity flow temperature of various blown film resins is PP: 164-175 degrees Celsius, PE: 105-135 degrees Celsius, and PA: 195-210 degrees Celsius. Environment determines product quality.
