Extrusion & Post
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PA66 product delamination
Problem Phenomenon
Layered peeling, more frequent near the gate.
Cause Analysis
Mixed material contamination, excessive release agent; layers cannot fuse; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience; during troubleshooting, confirm item by item around key factors such as delamination and contamination to avoid misjudgment.
Solution
①Troubleshoot material mixing and contamination, standardize storage management of virgin material and regrind; ②thoroughly clean the machine, removing accumulated material in dead corners of the barrel and hot runner; ③control release agent usage to avoid forming an isolation layer on the surface; ④strengthen raw '2079851475616104451 and verify moisture content compliance by moisture determination; ⑤check regrind compatibility.
Key Takeaway
PA66 delamination='contamination': mixing in incompatible material is the primary cause; nylon and polyolefin are incompatible, mixing materials is a major taboo; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
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