Extrusion & Post
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EVA Film Insufficient Crosslinking Degree
Problem Phenomenon
The crosslinking degree of the film is tested below the standard, and the weather resistance of the module is in doubt.
Cause Analysis
Insufficient lamination temperature or time makes the crosslinking reaction incomplete; expired or improperly stored film deactivating the crosslinking agent is also a cause.; During on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solution
①Set the lamination temperature and time according to the supplier window; ②control the film inventory period and storage conditions; ③regularly test the crosslinking degree; ④sampling verification after lamination.; After adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
The crosslinking degree is the core indicator of film quality; the lamination process window and material freshness are both indispensable.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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