Problema e solução

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Melt Fracture in PU Extrusion

Extrusion & Post PU extrusionmelt fractureelastic recoverydie L/Dextrusion rate

Difficult Demolding in PU '2079851475616104452

Injection Molding PU injectiondemolding difficultydraft angleadhesionejection design

Bubbles in PU Injection Molded Thick-Walled Products

Material Drying PU injectionbubbleholding pressurethick-walled productmold venting

EVOH Product Elliptical Deformation

Elliptical deformation is caused by asymmetric demolding force; uniform ejection is key

Molds & Tooling EVOHelliptical deformationsymmetric ejectionuniform coolingsetting time

EVOH Surface Snakeskin Pattern

Extrusion & Post EVOHsnakeskin patternextrusion temperatureelastic recoverydie temperature control

EVOH Internal Delamination Cracking

Extrusion & Post EVOHinternal delaminationinterfacial adhesioncompatibilizeruniform cooling

EVOH Product Twist Deformation

Twist deformation is caused by asymmetric cooling; symmetric cooling is key

Molds & Tooling EVOHtwist deformationsymmetric coolinggate arrangementannealing

Carbonized Black Specks Inside EVOH

Processing Machinery EVOHinternal black speckthermal carbonizationscrew cleaningtemperature control

EVOH Flexural Modulus Too Low

Material Analysis EVOHflexural modulusrigid fillernucleating agentcrystallinity

Periodic EVOH Surface Ripples

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

Injection Molding EVOHsurface rippleinjection stabilityequipment overhaulPID control

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