Process and apparatus for the direct and continuous modification of polymer melts
US5458478A · kind A · utility
9Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Dec 23, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process and an apparatus for the direct, continuous and flexible modification of polymer melts by branching off a branch melt stream from the main melt stream to be modified, dispersing the initially introduced additive in the melt in a specially designed twin-screw extruder, and subsequent recycling of the additive melt concentrate to the melt stream to be modified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.