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Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

2239 preguntas
Q
POE extruder screw severe wear
A
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are key
Extrusion & Post POE extrusionscrew wearnitrided screwfiller frictionbimetallic screw
Q
POE extrusion pipe inner wall rough
A
Pipe inner wall roughness is caused by mandrel condition and insufficient cooling; polishing mandrel and internal cooling are key
Extrusion & Post POE pipeinner wall roughnessmandrel polishinginternal coolingmelt elasticity
Q
POE extrusion film longitudinal streaks
Q
POE film blocking, difficult delamination
Q
POE extrusion profile bending deformation
A
Profile bending is caused by uneven cooling and uneven flow velocity; uniformization and alignment are the solution key
Extrusion & Post POE extrusionbending deformationuniform coolinguniform flow velocitysizing sleeve
Q
POE extrusion film thickness uniformity poor
A
Film thickness uniformity requires coordinated optimization from three aspects: die design, gap adjustment and cooling
Extrusion & Post POE filmthickness uniformitydie designdie swellair ring cooling
Q
POE film heat shrinkage too large
A
Film heat shrinkage is caused by orientation freezing; reducing draw ratio and annealing treatment are key
Extrusion & Post POE filmheat shrinkageorientation releaseannealing treatmentbiaxial stretching
Q
POE extrusion dimensional instability
A
Extrusion dimensional stability depends on feeding accuracy, temperature control and haul-off synchronization
Extrusion & Post POE extrusiondimensional stabilityfeeding controltemperature PIDhaul-off synchronization
Q
POE extrusion die material buildup carbon deposit
A
Die carbon deposit is caused by thermal oxidation and untimely cleaning; PE flushing and timely cleaning are key
Extrusion & Post POE extrusiondie carbon depositPE flushingresidence zonethermal oxidation
Q
POE blended with incompatible resins, delamination
A
Blends with large polarity differences require reactive compatibilizers to form chemical bonding at the interface to solve it
Extrusion & Post POE blend delaminationpolarity differencePOE-g-MAHreactive compatibilizationinterfacial bonding
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