Processing Machinery
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LDPE Film Odor Problem
Problem Phenomenon
The film has an off-odor, and food packaging customers complain.
Cause Analysis
Raw material degradation or additive volatilization produces odor; blending recycled material also brings in off-odor.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
Solution
①Control processing temperature to prevent degradation; ②Select low-odor additives; ③Limit recycled material use; ④Conduct odor evaluation testing.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Key Takeaway
Off-odor of food contact film is a hard indicator; source material and temperature management are the keys.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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