Injection molding machines and methods for accounting for changes in material properties during injection molding runs
US8980146B2 · kind B2 · utility
2Cited by
21References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2014 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Feb 10, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and a machine that account for changes in material properties of molten plastic material during an injection run. If viscosity of the molten plastic material changes during an injection run, a controller alters an injection pressure to ensure that molten plastic material fills a mold cavity within a correct amount of time to prevent part flaws such as short shots or flashing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.