المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

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Poor fatigue resistance of PU

Molds & Tooling PU fatigue resistance crosslinking degree molecular weight stress concentration

PU length out of tolerance

Molds & Tooling PU length out of tolerance shrinkage mold compensation full cooling

Obvious surface color difference of PU

Injection Molding PU color difference color masterbatch dispersion pigment orientation temperature stability

Material overflow at PU vacuum section

Overflow is caused by low melt viscosity; temperature reduction and baffle are key

Extrusion & Post PU vacuum section overflow melt viscosity temperature reduction vent baffle

Orange peel texture on PU surface

Injection Molding PU orange peel mold temperature holding pressure surface solidification

PU stress cracking

Production & Quality PU stress cracking environmental stress annealing treatment high molecular weight

Severe internal stress concentration of PU

Injection Molding PU internal stress orientation stress annealing treatment uniform cooling

Dense surface pits of PU

Extrusion & Post PU surface pits impurity particles mold repair raw material purity

Difficult PU purging

Processing Machinery PU difficult purging adhesion PE flushing special purging compound

Surface micro-cracks of PU

Production & Quality PU micro-cracks internal stress annealing treatment stress concentration design

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