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Problem & Lösung

Praktische Antworten auf häufige Herausforderungen mit Kunststoffmaterialien

11636 Fragen
Q
EVA foam density is too high
A
EVA foam density is determined by the blowing agent, VA content, and crosslinking degree
Material Analysis EVA foam high density AC blowing agent VA content DCP crosslinking
Q
EVA extruded pipe ovality exceeds standard
A
Ovality is caused by uneven cooling and clamping; annular cooling and uniform traction are key
Processing Machinery EVA pipe ovality annular cooling vacuum sizing uniform traction
Q
EVA extruded film has gel particles
A
Gel particles are caused by insufficient melting; increasing temperature and mixing are key
Extrusion & Post EVA film gel particle melting temperature mixing section high molecular weight component
Q
EVA extruded film has transverse corrugations
A
Transverse corrugations are caused by traction vibration and roller eccentricity; equipment overhaul and stable control are key
Extrusion & Post EVA film transverse corrugation traction vibration cooling roller eccentricity pressure stabilizing device
Q
Frequent screen clogging in EVA extrusion
A
Screen clogging is caused by impurities and improper configuration; raw material control and stepped screens are key
Extrusion & Post EVA extrusion screen clogging gel particles stepped screens automatic screen change
Q
Silver streaks caused by moisture in EVA processing
A
Silver streaks are caused by moisture vaporization and stretching; drying and venting are the main countermeasures
Material Drying EVA injection silver streaks moisture drying venting back pressure
Q
Cold slug marks in EVA '2079851475616104452
A
Cold slug marks are caused by solidified residual material in nozzle; raising nozzle temperature and cold slug well design are key
Injection Molding EVA injection cold slug marks nozzle temperature cold slug well injection pressure
Q
Wrinkling in EVA extruded film winding
A
Film wrinkling is caused by tension fluctuation and uneven thickness; automatic tension control and homogenization are key
Extrusion & Post EVA film winding wrinkling tension control thickness uniformity guide roller parallelism
Q
Flow marks in EVA '2079851475616104452
Q
Sink marks in EVA '2079851475616104452
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