Extrusion & Post
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EVA Film High Shrinkage Rate
Problem Phenomenon
Film shrinkage after lamination causes cell displacement or microcracks.
Cause Analysis
The film itself has a high shrinkage rate or the lamination process does not match; differences in shrinkage characteristics of different batches of film also cause fluctuations.; During on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solution
①Select a low-shrinkage film; ②optimize the lamination temperature curve; ③test the shrinkage rate of incoming materials by batch; ④fine-tune the lamination process with the batch.; After adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
Film shrinkage affects module reliability; low-shrinkage material plus process matching is the solution.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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