PE film blower has different screw, length-diameter ratio and compression ratio. Different moulds have different blowing ratios, because PVC materials are easy to decompose, so the expansion angle of runner design is also different. If the film is blown directly with powder. The production process and principle add dry polyethylene particles into the hopper, and enter the screw from the hopper by the weight of the particles themselves. When the particles contact with the screw oblique edge, the rotating oblique edge surface produces a thrust perpendicular to the oblique edge surface of the plastic.
The plastic particles are pushed forward, decelerated and driven by an electromagnetic speed regulating motor (or a frequency conversion common motor), which drives the screw to rotate in the barrel by belt drive, and extrudes the melted plastic particles in the hopper under external heating through three filters from the die.
The key part of the two coils is thermocouple automatic temperature measurement and automatic temperature control. In normal production process, the temperature can be automatically controlled to ensure that the production process is stable and reliable. There are many kinds of film blowing machines, such as PE, POF and so on. The new material is blown out with brand-new particles. The color is uniform, clean and the bag is well stretched. At the same time, it gradually melts due to external heating of the barrel. Molten plastics are filtered through the die to remove impurities from the die.
The finished film is rolled into a drum by cooling, blowing through the herrings, drawing rolls and coiling. Frequency converter of film blower. Recycled plastic bags, however, are generally waste bags in the process of bag making, which are quite different from the general sense of waste plastic. Blowing film machine produces film for all kinds of high-grade film packaging.
Because of its good barrier, fresh-keeping, moisture-proof, frost-proof, oxygen-proof and oil-proof, the film can be widely used in light and heavy packaging. Such as all kinds of fresh fruits, meat products, pickles, fresh milk, liquid drinks, medical supplies and so on. So the blower is divided into high-pressure blower and low-pressure blower according to the raw materials.