What is the working theory of blown film machine?

Blown film machine is suitable for producing various types of high-end packaging films, with good barrier properties, freshness preservation, moisture retention, antifreeze, anti-oxidation, and anti-oil properties. It can be used for light and heavy packaging processes such as fresh fruits, meat, pickles, fresh milk, liquid beverages, and medicines.

Working theory of blown film machine:

Blown film machine is a plastic production machine. The main working principle is: put dry polyethylene material into the hopper, and the weight of the material and its fall from the hopper into the screw. When the material particles contact the bevel of the thread, the rotating plastic generates thrust. The oblique ridge perpendicular to the plane, the plastic particles move forward, and this process continues because of the friction of the plastic screw and the collision friction of the particles, the time interval between the plastic and the barrel, and the gradual dissolution due to external heating. The molten plastic passes through the screw and the filter screen converter to filter impurities, extrude the mold, cool the air ring and blow the film through the herringbone plate, traction roller, winder, and finally the film is wound.