Mixing head for producing a preferably chemically reactive mixture from two or more plastic components
US4773564A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1983 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Mar 9, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B7/7673
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a mixing head, a housing (1) has a bore (2) in which a control piston (7) can be moved to and fro. One portion of the bore constitutes the mixing chamber (4), which is bounded by the end face of the control piston and by a plurality of restrictors (9) and (10) which are arranged in a row one next to the other and/or one behind the other, and can be slid into the bore. The restrictors are preferably introduced into the bore (2) from diametrically opposite sides, forming a cascade-like structure. Inlet orifices (5) and (6) for each plastic component enter the mixing chamber. As it flows, the mixture of plastic components is divided, by the cascade-like structure, into a plurality of part-streams and thereby subjected to additional mixing, and passes, with sufficiently laminar flow, into a mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.