Material Drying
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PVB Re-bubbling Phenomenon
Problem Phenomenon
Re-bubbling appears during the service period of laminated glass, residual air from roller pressing or PVB moisture weakens the bond.
Cause Analysis
Residual air trapped during roller pressing; high PVB moisture content weakens glass-film bonding; poor adhesion of ceramic ink to glass/PVB; service environment induces it.
Solution
①Sufficient roller pressing venting to prevent residue; ②Strict PVB moisture management; ③Ink adhesion verification; ④Service environment assessment.; After adjustment, continuously sample to verify the effect, confirm stability before resuming mass production
Key Takeaway
PVB re-bubbling is the delayed appearance of production defects; moisture and venting are prevention priorities; adhesion verification covers interfaces.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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