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The Principle Of The Film Blowing Machine
Oct 08, 2018

The dried polyethylene particles are added into the lower hopper, and enter the screw from the hopper by the weight of the particles themselves. When the pellets are in contact with the helical bevel of the thread, the rotating bevel faces the plastic to produce a thrust perpendicular to the beveled surface, and the plastic particles are Moving forward, during the transition, due to the friction between the plastic and the screw, the plastic and the barrel, and the collision between the particles, it is also gradually melted due to the external heating of the barrel. The molten plastic is filtered by the machine head to remove impurities from the die die, cooled by the air ring, inflated through the herringbone plate, the traction roller, and wound to wind the finished film into a cylinder.