Processing Machinery
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TPU recycled material use problems
Fenómeno do problema
After using recycled material, the appearance and mechanical properties of products fluctuate.
Análise das causas
Recycled material has a long heat history and may be damp or contaminated; TPU is sensitive to the recycled material ratio, and excessive use significantly reduces performance; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solução
①control the recycled material ratio; ②re-dry recycled material; ③classified management to prevent mixing; ④use all-virgin material for critical products; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusão principal
TPU recycled material must be limited in quantity and use; re-drying is a necessary step before use; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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