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문제 및 해결책

일반적인 플라스틱 재료 문제에 대한 실질적인 답변

2239 질문
Q
Large EMA dimensional change with temperature
A
Dimensional temperature sensitivity is caused by large thermal expansion coefficient; adding filler and annealing are key
Extrusion & Post EMA dimensional temperature sensitivity thermal expansion coefficient rigid filler annealing treatment
Q
EMA vacuum vent overflow
A
Overflow is caused by low melt viscosity; temperature reduction and baffle addition are key
Extrusion & Post EMA vacuum section overflow melt viscosity temperature reduction vent baffle
Q
Dense EMA surface pits
A
Pits are caused by raw material impurities and mold damage; pure raw material and mold maintenance are key
Extrusion & Post EMA surface pits impurity particles mold repair raw material purity
Q
EMA Extruded Pipe Ovality Out of Standard
A
Ovality is caused by uneven cooling and clamping; annular cooling and uniform haul-off are key
Extrusion & Post EMA pipe ovality annular cooling vacuum sizing uniform haul-off
Q
EMA Extruded Film Has Gel Particles
A
Gel particles are caused by insufficient melting; increasing temperature and mixing are key
Extrusion & Post EMA film gel particles melting temperature mixing section high-molecular-weight components
Q
EMA Extruded Film Has Transverse Ripples
A
Transverse ripples are caused by haul-off vibration and roller eccentricity; equipment overhaul and stable control are key
Extrusion & Post EMA film transverse ripples haul-off vibration cooling roller eccentricity pressure stabilizing device
Q
EMA Extrusion Screen Pack Frequent Clogging
A
Screen clogging is caused by impurities and improper configuration; raw material control and stepped screens are key
Extrusion & Post EMA extrusion screen clogging gel particles stepped screens automatic screen changer
Q
EMA Extruded Film Wrinkling During Winding
A
Film wrinkling is caused by tension fluctuation and uneven thickness; automatic tension control and uniformization are key
Extrusion & Post EMA film winding wrinkling tension control thickness uniformity guide roller parallelism
Q
EMA Extrusion Unstable Feeding
A
Unstable feeding is caused by pellet characteristics; loss-in-weight feeding and anti-bridging are the core
Extrusion & Post EMA feeding bridging loss-in-weight feeder pelletizing feeding screw
Q
EMA Film Poor Printing Adhesion
A
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and special ink are key
Extrusion & Post EMA film printing adhesion corona treatment special ink surface tension
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