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The operation of the Blown Film Extruder Machine and the precautions for its correct use
- Jan 12, 2019 -

The operation of the film blowing machine is to add dry polyethylene particles 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 and the oblique edges The vertical thrust of the surface moves the plastic particles forward.


During the shifting process, 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.


Before using the film blowing machine, it is necessary to check that the temperature is self-controlled, the heating appliance is in good condition, pay attention to adjust the heating temperature of each point in the indicator range in time; check the traction speed and control the film thickness; observe the uniformity of the film thickness, and the folding diameter meets the standard.


At the same time, it is necessary to check the air storage cylinder pressure of the film blowing machine, control the proportion of raw materials and mix evenly; check the raw materials for impurities, especially in time to check the iron mixing with magnets; check the lubrication of the reduction gear box and the cylinder of the air compressor; Check the temperature rise and mechanical transmission of each running motor.

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