Extrusion & Post
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PS Product Printing Adhesion
Problem Phenomenon
Printed patterns do not adhere firmly.
Cause Analysis
The surface polarity of PS limits ink selection; surface contamination also affects adhesion.; During on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based solely on experience; This mechanism has been repeatedly verified by industry literature and should be confirmed first during troubleshooting
Solution
①Select PS-specific inks; ②Clean the surface before printing; ③Perform surface treatment when necessary; ④Conduct adhesion tests.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PS printing depends on ink matching; a dedicated system is the key to success.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooting similar problems in the future
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