High pressure injection molding nozzle with low pressure manifold
US7771190B2 · kind B2 · utility
3Cited by
9References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Nov 7, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76769
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hot runner system includes a having a cavity. Melt is fed from a source of melt into the cavity, and a valve isolates melt in the cavity from melt in the source. A plunger within the cavity is driven forward to inject melt in the cavity into a mold cavity at high pressure without significantly increasing the pressure of melt in the source. The plunger optionally functions as both the plunger and the valve by opening and closing communication between the cavity and the manifold as it is rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.