Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Insufficient roundness of PU

Insufficient roundness is caused by uneven cooling; annular cooling is key

Molds & Tooling PU insufficient roundness uniform cooling gate symmetry demolding force

Internal voids of PU

Material Drying PU internal voids holding pressure mold venting raw '2079851475616104451

Heavy smoke in PU processing

Heavy smoke is caused by volatiles evaporation; temperature reduction and exhaust are key

Material Analysis PU processing smoke volatiles exhaust system temperature reduction

Periodic surface corrugation of PU

Corrugation is caused by unstable injection; equipment overhaul and PID control are key

Injection Molding PU surface corrugation injection stability equipment overhaul PID control

Poor PU plasticization

Processing Machinery PU poor plasticization screw compression ratio shear rate processing temperature

Internal inclusions of PU

Production & Quality PU inclusions raw material filtration environmental cleanliness recycled material sorting

PU hardness too low

Molding Process PU low hardness rigid filler plasticizer crystallization control

Non-uniform internal density of PU

Non-uniform density is caused by uneven holding pressure; optimizing gate design is key

Molds & Tooling PU non-uniform density holding pressure transmission gate design crystallization difference

Insufficient toughness of PU, brittle fracture

Material Analysis PU insufficient toughness molecular weight crosslinking control crystallization refinement

Insufficient flatness of PU

Molds & Tooling PU flatness shrinkage difference uniform mold temperature annealing treatment

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