Injection molding machines and methods for accounting for changes in material properties during injection molding runs
US9475226B2 · kind B2 · utility
1Cited by
28References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2014 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Nov 19, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2101/12
- 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 a step time of the injection cycle to ensure that molten plastic material completely fills and packs a mold cavity to prevent part flaws such as short shots or flashing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.