Processing Machinery
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LDPE Poor Opening Property
Problem Phenomenon
LDPE film bags are difficult to open
Cause Analysis
The film surface is smooth plus electrostatic adsorption causes interlayer blocking; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Add antiblock agent and slip agent to the formulation; corona treatment; winding tension control; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes, so as to locate the effective measure
Key Takeaway
Opening property relies on antiblock agent and tension management; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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