Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

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Screw parameters not matching the material, poor extrusion quality

The extrusion screw needs to match the material

Extrusion & Post extrusion screwcompression ratioL/D ratiocellulose acetate butyrate

Extruded pipe bent, not straight

Pipe bending needs to be addressed from uniform cooling and alignment

Extrusion & Post pipe bendingcooling uniformityhaul-off alignment

Poor interfacial bonding or delamination in multi-material molding

Co-injection needs to be addressed from compatibility and process matching

Extrusion & Post co-injectioncompatibilityinterfaceshrinkage rate difference

Complex cross-section profile dimension control difficult

Profiles require precise sizing sleeves and sufficient cooling

Extrusion & Post profilesizing sleeveshrinkage ratecooling

Snake-like curved lines appear on the product from the gate

Jetting requires reducing the initial injection speed and adjusting the gate

Extrusion & Post jettingsnake-like linesgateinjection speed

Unreasonable temperature settings in each zone affect plasticization and extrusion quality

Extrusion temperature needs to be reasonably set for each zone according to the gradient

Extrusion & Post extrusion temperaturezone controlgradientplasticization

Improper annealing treatment, residual stress not eliminated or product deformed

Annealing requires slow cooling below the heat deflection temperature

Extrusion & Post annealingresidual stressheat deflection temperature

White streaks or whitened areas appear at stressed or bent parts of the product

Whitening is caused by excessive residual stress; stress needs to be reduced

Extrusion & Post whiteningstress whiteningresidual stressannealing

PVA internal delamination cracking

Extrusion & Post PVAinternal delaminationinterfacial bondingcompatibilizeruniform cooling

PVA surface snakeskin pattern

Extrusion & Post PVAsnakeskin patternextrusion temperatureelastic recoverydie temperature control

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