Production & Quality
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Internal inclusions of PU
Problem Phenomenon
0.1-0.5mm inclusions inside PU products, affecting appearance
Cause Analysis
Impurity particles in raw material; dust pollution in production environment; foreign matter mixed into recycled material
Solution
1) Filter raw material with 120 mesh screen to remove impurities; 2) Keep production environment clean, control dust; 3) Strictly sort recycled material to remove foreign matter
Key Takeaway
Inclusions are caused by raw material and environmental pollution; filtration and environmental control are key
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