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Problem & Solution

Practical answers to common plastic material challenges

11636 questions
Q
MP extruded film transverse waviness
A
transverse waviness is caused by haul-off vibration and roller eccentricity; equipment overhaul and stable control are key
Extrusion & Post MP film transverse waviness haul-off vibration cooling roller eccentricity pressure stabilizing device
Q
MP extrusion screen frequent clogging
A
screen clogging is caused by impurities and improper configuration; raw material control and stepped screens are key
Extrusion & Post MP extrusion screen clogging gel particle stepped screen automatic screen change
Q
moisture in MP processing causing silver streaks
A
silver streaks are caused by moisture vaporization and stretching; drying and venting are the main countermeasures
Material Drying MP injection silver streak moisture drying venting back pressure
Q
MP '2079851475616104452 cold slug marks
A
cold slug marks are caused by solidified residue in the nozzle; raising nozzle temperature and cold slug well design are key
Injection Molding MP injection cold slug mark nozzle temperature cold slug well injection pressure
Q
MP extrusion unstable feeding
A
unstable feeding is caused by pellet characteristics; loss-in-weight feeding and anti-bridging are the core
Extrusion & Post MP feeding bridging loss-in-weight feeder pelletizing feed screw
Q
MP film poor printing adhesion
A
poor printing adhesion is caused by insufficient surface polarity; corona treatment and specific ink are key
Extrusion & Post MP film printing adhesion corona treatment specific ink surface tension
Q
MP extruded film winding wrinkles
A
film wrinkling is caused by tension fluctuation and thickness unevenness; automatic tension control and homogenization are key
Extrusion & Post MP film winding wrinkle tension control thickness uniformity guide roller parallelism
Q
MP '2079851475616104452 flow marks
A
flow marks are caused by unstable injection front and rapid cooling; multi-stage injection and high mold temperature are key
Injection Molding MP injection flow mark injection speed mold temperature gate area
Q
MP '2079851475616104452 sink marks
Q
MP performance degradation after repeated processing
A
performance degradation from multiple processing is caused by thermo-mechanical degradation; limiting regrind and replenishing antioxidants are key
Production & Quality MP recycling performance degradation antioxidant replenishment thermal degradation shear degradation
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