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How is plastic film made?

Source:How is plastic film made?Time:2018-04-25Visitors:

The film made by plastic film manufacturers uses polyethylene as the raw material. Therefore, it is also called a polyethylene film. This film has the advantages of moisture resistance, low moisture permeability, etc. The use effect is very good. How is it made from polyethylene into film? What?
In the production of plastic film, it is necessary to add dry polyethylene particles into the lower hopper first, and then enter the screw from the hopper by the weight of the particles. When the pellets come into contact with the inclined bevel of the thread, the rotating oblique ribs face the plastic to produce and incline. The vertical thrust of the prisms pushes the plastic particles forward. In the process of moving, due to the friction between the plastic and the screw, the plastic and the barrel, and the collision friction between the particles, the external heating of the barrel causes gradual melting.
Plastic film manufacturers said that after the completion of the above steps, the molten plastic will go through the filter head to remove impurities from the die head. After being blown and cooled by the air ring, it will be pressed by the herringbone, and the finished film will be taken up by a drawing roller. Rolling into a tube becomes our common plastic film.

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