Effect of Cooling Time on Demoulding Temperature, Shrinkage and Warpage of Injection-Moulded Polypropylene Parts
Jan Kleinsorge, Yannick Luca Ollig-Gaul, Christian Hopmann · 2026
Read Effect of Cooling Time on Demoulding Temperature, Shrinkage and Warpage of Injection-Moulded Polypropylene Parts by Jan Kleinsorge, Yannick Luca Ollig-Gaul, Christian Hopmann (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13467870.txt.
Description
Jan Kleinsorge and colleagues measured how cooling time shapes the size accuracy of injection-moulded polypropylene parts in experiments, not just simulations. Cooling eats 60 to 80 percent of each moulding cycle, so shaving it saves money but risks warped, shrunken parts.
Housing parts were moulded from virgin and recycled plastic, varying cooling time, melt temperature, and mould temperature in set designs. Cooling time proved the main driver of the temperature at which parts leave the mould. Mould temperature mattered most for size accuracy, though cooling shifts from zero to four seconds had a comparable effect. Deviations shrank ever more slowly as cooling lengthened, Kleinsorge notes, so small smart increases buy accuracy cheaply.
Catalog record
| CREATOR | Jan Kleinsorge, Yannick Luca Ollig-Gaul, Christian Hopmann |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 29 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |