Film Blowing Machine : LDPE material
Release time:
2024-01-11
For LDPE, the common film is too sticky and the opening is poor for the following reasons:
1, the grade of plastic particles is not correct, the particles may be used are not special for the film blowing machine, and the particles do not contain opening agents or the opening agent content is low.
2, the temperature set by the film blowing machine is too high, and the flow rate of molten particles is too fast.
3, blowing ratio is too large, resulting in poor film opening.
4, the cooling speed of the wind ring of the film blowing machine is too slow, the film is not cooled enough, and the mutual bonding occurs under the action of the upper traction roller.
5, the traction speed of the film blowing machine is too fast, and the frost line is too high.
The solution:
1. Replace the plastic particles, or add a certain proportion of opening agent to the particles.
2. Properly reduce the temperature of the screw and mold.
3. Reduce the blowup ratio.
4. Increase the cooling air volume, or adjust the temperature of the cooler.
5. Properly reduce the speed of the traction roller.
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