Processing Machinery
5 views
HDPE film bubble flutter
Problem Phenomenon
Transverse ripples and straight stripes appear on the surface of the film bubble below the frost line, and the film has fine wrinkles.
Cause Analysis
The air velocity at the air ring outlet is too high and directly impacts the film bubble surface, inducing flutter; ambient airflow disturbance also superimposes its influence.; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
①Reduce the air ring air velocity and increase the air vent gap; ②add a wind shielding enclosure; ③appropriately raise the frost line; ④check the structural uniformity of the air ring.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Film bubble flutter is directly related to airflow impact; reducing the air velocity impact is the primary measure, and isolating ambient airflow is equally important.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
Was this helpful?
0 people found this helpful
Thank you for your feedback!