Injection Molding
5 Aufrufe
PBT Keycap Application
Problembeschreibung
High-end keycaps select PBT for wear resistance but '2079851475616104452 shrinks, and shrinkage at the characters is uneven
Ursachenanalyse
PBT has good wear resistance and is the base material for high-end keycaps; but the large shrinkage rate causes shrinkage at thick-wall areas of the keycap; uneven shrinkage at characters and ribs affects feel and appearance; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Lösung
①Design keycap wall thickness uniformly; ②Optimize holding pressure to control shrinkage; ③Leave allowance precisely according to the shrinkage rate; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
The quality of PBT keycaps lies in shrinkage control; only with uniform wall thickness plus precise holding pressure can the wear resistance advantage be perfectly presented; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!