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문제 및 해결책

일반적인 플라스틱 재료 문제에 대한 실질적인 답변

2239 질문
Q
Weak Interfacial Adhesion in EVOH Coextrusion
A
EVOH/PE interface polarity difference is large; a tie layer must be used to solve it
Extrusion & Post EVOH/PE coextrusiontie layerPE-g-MAHinterfacial polarity differenceEAA tie layer
Q
EVOH Extruded Pipe Ovality Out of Specification
A
Ovality is caused by uneven cooling and clamping; annular cooling and uniform haul-off are key
Extrusion & Post EVOH pipeovalityannular coolingvacuum sizinguniform haul-off
Q
Large Current Fluctuation of EVOH Extruder
A
Current fluctuation is caused by unstable feeding, poor temperature control and unsuitable screw; system optimization is key
Extrusion & Post EVOH extrusioncurrent fluctuationtemperature control precisionscrew designfeeding stability
Q
Gel Particles on EVOH Extruded Film
A
Gel particles are caused by insufficient melting; increasing temperature and mixing is key
Extrusion & Post EVOH filmgel particlemelting temperaturemixing sectionhigh molecular weight component
Q
Transverse Ripples on EVOH Extruded Film
A
Transverse ripples are caused by haul-off vibration and roll eccentricity; equipment overhaul and stable control are key
Extrusion & Post EVOH filmtransverse ripplehaul-off vibrationchill roll eccentricitypressure stabilizing device
Q
Frequent Screen Clogging in EVOH Extrusion
A
Screen clogging is caused by impurities and improper configuration; raw material control and stepped screens are key
Extrusion & Post EVOH extrusionscreen clogginggel particlestepped screenautomatic screen change
Q
EVOH Extruded Film Winding Wrinkles
A
Film wrinkling is caused by tension fluctuation and uneven thickness; automatic tension control and homogenization are key
Extrusion & Post EVOH filmwinding wrinkletension controlthickness uniformityguide roller parallelism
Q
EVOH extrusion feeding is unstable
A
Unstable feeding is caused by pellet characteristics; loss-in-weight feeding and anti-bridging are core
Extrusion & Post EVOH feeding bridging loss-in-weight feeder pelletizing feeding screw
Q
EVOH extrusion surface is rough
A
Surface roughness is caused by low-temperature extrusion and die defects; increasing temperature and polishing the die are core countermeasures
Extrusion & Post EVOH extrusion surface roughness die polishing extrusion temperature melt elasticity
Q
EVOH extruder screw wear is severe
A
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are key
Extrusion & Post EVOH extrusion screw wear nitrided screw filler friction bimetallic screw
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