Processing Machinery
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ASA Color Difference and Color Matching
Problem Phenomenon
【Problem Phenomenon】ASA colored products batch-to-batch color difference, outdoor parts color management difficult
Cause Analysis
ASA color durability is its selling point, but processing thermal history and color masterbatch dispersion differences still cause color difference; outdoor application color difference is more amplified and inspected; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solution
Lock temperature and residence parameters; color masterbatch precisely metered and dispersed; outdoor parts controlled by Delta E<3; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA color difference controls thermal history and dispersion, outdoor parts look at Delta E; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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