TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

The technique used to partially clear the resin from the injection nozzle after the injection cycle. By pulling the screw rearward, the resin is drawn back into the injector.  2, fiche 1, Anglais, - suck%20back

Record number: 1, Textual support number: 1 CONT

Most machines retract the screw slightly at this point to decompress the material to prevent drooling out of the nozzle. This is called the suck back and is usually controlled by a timer.  3, fiche 1, Anglais, - suck%20back

Record number: 1, Textual support number: 1 OBS

When the pressure on the sprue is not held long enough for the resin to cool before the screw returns, some of the hot resin in the cavities or runner system may expand back into the nozzle and cause sink marks on the finished part.  4, fiche 1, Anglais, - suck%20back

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol