Process for making a fiber containing an additive
US5516476A · kind A · utility
36Cited by
14References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Nov 8, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D1/065
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A multiplate spin pack receives metered molten polymer and metered amounts of additive components selectively proportioned to produce desired characteristics in extruded fiber. The additive components are mixed together and blended with the polymer by passage through a pattern of mixer channels formed in opposed faces of spin pack mix plates immediately upstream of the spinning orifices of a spinneret. Mixing is produced by splitting the fluids into multiple paths and repeatedly converging the paths into boundary layer contact. Short flow paths of mixed polymer minimizes time and waste in change over procedures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.