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Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

11636 preguntas
Q
Large current fluctuation of PU extruder
A
Current fluctuation is caused by unstable feeding, poor temperature control and unsuitable screw; system optimization is key
Extrusion & Post PU extrusion current fluctuation temperature control precision screw design feeding stability
Q
Gel particles in PU extruded film
A
Gel particles are caused by insufficient melting; increasing temperature and mixing are key
Extrusion & Post PU film gel particles melting temperature mixing section high molecular weight components
Q
Transverse corrugations in PU extruded film
A
Transverse corrugations are caused by haul-off vibration and roller eccentricity; equipment overhaul and stable control are key
Extrusion & Post PU film transverse corrugation haul-off vibration cooling roller eccentricity pressure stabilizing device
Q
Cold slug marks in PU '2079851475616104452
A
Cold slug marks are caused by solidified residual material in the nozzle; increasing nozzle temperature and cold slug well design are key
Injection Molding PU injection cold slug marks nozzle temperature cold slug well injection pressure
Q
Frequent screen clogging in PU extrusion
A
Screen clogging is caused by impurities and improper configuration; raw material control and stepped screens are key
Extrusion & Post PU extrusion screen clogging gel particles stepped screen automatic screen changing
Q
Silver streaks caused by moisture in PU processing
A
Silver streaks are caused by moisture vaporization and stretching; drying and venting are the main countermeasures
Material Drying PU injection silver streaks moisture drying venting back pressure
Q
Unstable feeding in PU extrusion
A
Unstable feeding is caused by particle characteristics; loss-in-weight feeding and anti-bridging are the core
Extrusion & Post PU feeding bridging loss-in-weight feeder granulation feed screw
Q
Poor printing adhesion of PU film
A
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and special ink are key
Extrusion & Post PU film printing adhesion corona treatment special ink surface tension
Q
Wrinkling of PU extruded film after winding
A
Film wrinkling is caused by tension fluctuation and uneven thickness; automatic tension control and homogenization are key
Extrusion & Post PU film winding wrinkling tension control thickness uniformity guide roller parallelism
Q
Flow marks in PU '2079851475616104452
A
Flow marks are caused by unstable injection front and rapid cooling; multi-stage injection and high mold temperature are key
Injection Molding PU injection flow marks injection speed mold temperature gate area
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