During the moving process of the three-layer co-extrusion film blower, the friction between the plastic and the screw, between the plastic and the barrel, as well as the collision and friction between the particles, also gradually melts due to the heating outside the barrel. Head, die, cooling device, foam holder, herringbone, traction roll, coiling device, etc. Extruder, extruder is mainly composed of screw, barrel hopper, blower, etc.

Traction is composed of traction frame, herringbone, traction roll, winding mechanism and traction motor. Electrical control part, the general unit is equipped with unit operation cabinet, usually gray when making particles, usually add pigment when making bags, make bags colored unevenly, crisp and fragile, and low price. Employees'professional skill optimization, conscientious and detailed performance improvement and maintenance of equipment.

It is the fundamental to ensure the qualified and ideal products. Fresh-keeping, moisture-proof, frost-proof, oxygen-resistant, oil-resistant, can be widely used in light and heavy packaging. Such as a variety of fresh fruits, meat, pickles, fresh milk, liquid drinks, medical supplies and so on. During the pushing process, the melted material is gradually melted by extrusion, abrasion, heating and external heating. The melted material is extruded from the die opening, and rolled into thin film drum by blowing, cooling of the air ring, pulling up of the tractor rack, pulling roll, and then winding up by the winding rack.

For the inner hexagonal part, on the top edge of the head, they can be adjusted. As to whether it is tight or loose, the moulds from different origins are different, which should be known from the start. Heating appliances are in good condition, pay attention to adjust the heating temperature at each point in time within the index range. Check the air storage cylinder pressure, not too high, but there should be backup pressure. Avoid accidental injury to operators. When feeding, it is strictly prevented that hard objects with metal impurities and operating gadgets that damage the machine fall into the barrel. Electric leakage; Check whether the instrument is damaged or not. Make sure all parts are safe and normal before starting up, so as not to affect production and cause accidents.