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Practical answers to common plastic material challenges

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CEF extrusion melt fracture

Extrusion & Post CEF extrusionmelt fractureelastic recoverydie L/Dextrusion rate

CEF '2079851475616104452 thick-wall bubbles

Material Drying CEF injectionbubblesholding pressurethick-wall productsmold venting

CEF '2079851475616104452 demolding difficulty

Injection Molding CEF injectiondemolding difficultydraft angleadhesionejection design

Extruded pipe outer diameter dimension unstable

Pipe outer diameter fluctuation requires stable process parameters

Material Drying pipe outer diameterhaul-off speedtemperature stability

Longitudinal stripes or scratches appear on the outer surface of extruded pipe

Pipe surface stripes need to be addressed from die cleaning and temperature stability

Processing Machinery pipe stripesdie cleaningtemperature

Periodic thickness variation appears on the extruded product surface

Bamboo-node pattern requires stable haul-off and extrusion parameters

Extrusion & Post bamboo-node patternhaul-off speedextrusion stability

Hydraulic fluctuation causes unstable injection pressure and speed

The hydraulic system requires regular maintenance and oil temperature control

Injection Molding hydraulic systemoil temperaturehydraulic pumpmaintenance

Incomplete cleaning during material/color change causes mixing or color difference

Material/color change requires full cleaning and purging

Processing Machinery material changecolor changecleaningpurging

Haul-off parameters affect product dimensions and quality stability

Haul-off needs to match extrusion speed with stable control

Extrusion & Post extrusion haul-offspeed matchingtension control

Excessive regrind addition affects product quality and stability

Regrind requires ratio control and drying

Material Drying regrinddegradationmixingdrying

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