The blown film machine is a mechanical device that melts plastic particles and melts them into thin films. The dry polyethylene particles are added to the hopper, depending on the weight of the particles from the hopper into the screw. When the particles are in contact with the helical edge of the thread, the rotating oblique edges face the vertical thrust of the plastic with the oblique edges, and the plastic particles move forward and go on, due to the friction between the plastic and the screw, the plastic and the cylinder. Rubbing and collisions between particles are also gradually dissolving due to the external heating of the barrel.
The molten plastic is filtered through the head, and the impurity comes out from the die opening. After cooling and blowing through the air ring, the herringbone plate and the traction roller are used to roll the finished film into a drum. ABA blows: top rotating traction, single layer and multi-layer coextrusion blow film machine rotating and auto changing coil, etc. can be used to make ABA blows according to customer requirements: blowing high and low pressure polyethylene film (LDPE, HDPE), the product is widely used in composite film, packaging bag, agricultural cover film, textile, garment bag and so on, the main motor adopts frequency conversion. The speed regulation increases the stability of the main engine and saves electricity. The lifting rack adopts the lifting type to achieve the best cooling effect of the film.
In order to get quality controllable plastic bag products, the film blowing machine must control every processing step. Under normal circumstances, the process of film blowing machine is divided into feed heating, traction and control of compressed air. By adding air to the blowhole of the membrane head, the gas is added to the middle of the circular film, and the membrane is straight up. The size of the plastic bag is controlled by the amount of air blowing, and then the film is stabilized by the film stabilizing device.
In recent years, China has been the second largest country in plastic consumption in the world. It indicates that there will be better space for the development of plastic industry in the future. The application scope of the film blowing unit is mainly based on the different materials. For example, the film produced by the ABA blowing machine is suitable for a variety of supermarket shopping bags, bacteria bags and so on. The brightness of the bag is not high, and the high pressure PE blown film is suitable for all kinds of fresh-keeping bags. The film of the back material is suitable for all kinds of garbage bags and so on. The film blowing machine is widely used in various industries.