Extrusion & Post
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ASA co-extrusion temperature matching
Problem Phenomenon
[Problem phenomenon] ASA co-extrusion surface layer and substrate interlayer peeling, temperature setting favors one at the expense of the other
Cause Analysis
In ASA co-extrusion capstock process, the melt temperature and viscosity matching of surface layer and substrate (ABS/PVC/wood-plastic) determines interlayer bonding; excessive temperature difference weakens interface bonding
Solution
Co-extrusion each layer temperature set according to viscosity matching; ASA surface layer thin (0.5mm level) temperature takes middle value; interlayer bonding force sampling; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA co-extrusion looks at interlayer temperature viscosity matching, 0.5mm surface layer is classic; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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