Pigment metering and mixing apparatus
US4021022A · kind A · utility
4Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1975 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Aug 27, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for continuously metering small amounts of comminuted plastic color pigment or concentrate in desired proportions to a volume of resin being supplied to an extruder. The feed of the color concentrate is accurately metered by a controlled electromagnetic vibrator and delivered into the resin feed throat of the extruder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.