Spritzgießen Fehlerbibliothek
Technische Referenz für 13 häufige Spritzgießdefekte — Ursachen, Korrekturmaßnahmen, Prozessparameter und Materialempfehlungen.
13
Fehlertypen
225+
Dokumentierte Ursachen
208+
Korrekturmaßnahmen
5M1P
Diagnosemethode
Gratüberstand
Flash is excess material that escapes the mold cavity through gaps at parting lines, vents, or slides.…
Verzug
Warpage is dimensional distortion caused by uneven shrinkage from differential cooling or residual stress…
Einfallstellen
Sink marks occur when surface solidifies before the core, which then shrinks inward.…
Kurzschluss / Unvollständige Füllung
Short shot is failure to completely fill the mold cavity during injection.…
Brandflecken / Dieseleffekt
Two types: Diesel Effect trapped air compresses and self-ignites at 300-400 deg C. Gate shear material de…
Bindenahtlinien
Weld lines form where two advancing melt fronts meet. If the fronts are too cool or have trapped air the …
Silberschlieren
Silver streaks are caused by steam moisture air or degraded material stretched along the flow path.…
Risse / Sprödigkeit
Cracks occur from excessive internal stress improper drying wrong material or ESC from chemical contact.…
Maßabweichung
Dimensional instability comes from inconsistent shrinkage process instability or tool wear. Plastics use …
Lunker / Blasen
Two types surface bubbles from moisture vs internal vacuum voids same mechanism as sink marks core shrink…
Düsenfadenziehen
Stringing occurs when residual melt in the nozzle tip is too fluid and elongates as the mold opens.…
Auswerfermarkierungen
Ejector marks occur when the part is too hot or soft during ejection causing pins to sink in or create lo…
Lange Zykluszeit
Cycle time is the total time for one complete injection molding cycle. Extended cycle time reduces produc…