Material Drying
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PA6 Product Delamination
Fenómeno do problema
Surface layered peeling, mostly occurring near the gate.
Análise das causas
Material mixing contamination (such as mixing in PP/PE), excessive release agent, high moisture content; layers cannot fuse; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
Solução
①Troubleshoot material mixing and contamination, and standardize the storage management of raw material and regrind;②thoroughly clean the machine to remove accumulated material in the dead corners of the barrel and hot runner;③control the amount of release agent to avoid forming an isolation layer on the surface;④strengthen raw '2079851475616104451 and verify that the moisture content meets the standard with moisture measurement;⑤check the compatibility of regrind with the base material.
Conclusão principal
PA6 delamination = 'contamination': mixing in incompatible material is the first cause; nylon is incompatible with other polyolefins, material mixing is a big taboo, and find the pollution source first; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence.
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