Processing Machinery
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LDPE Film Air Volume and Pressure Setting
Problem Phenomenon
The bubble is under-cooled or trembling; it improves after adjusting air volume and pressure to the recommended range.
Cause Analysis
Air volume and pressure deviate from the empirical ranges of 60~80% and 0.3~0.6MPa; improper air ring position relative to the die also affects cooling efficiency.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
Solution
①Set air volume at 60~80% and air pressure at 0.3~0.6MPa; ②Fine-tune the air ring position 50~100mm from the die; ③Observe bubble shape for verification; ④Record the optimal settings.
Key Takeaway
Air volume and pressure have mature empirical ranges; fine-tuning based on them can quickly stabilize the bubble.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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