Mixer for a plasticizing screw
US7296920B2 · kind B2 · utility
5Cited by
29References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2004 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | May 21, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention provides an improved mixer section for a screw for a molding machine. The improved mixer section includes at least one conveying flight and at least one spill flight intersecting with the conveying flight. At least one notch is formed in the conveying flight to enable mixing between adjacent flow channels. The spill flight terminates near the output of the mixer to create a trap zone for any unmelts that reach that area of the mixer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.