Hopper blender system and method for coating fibers
US5582644A · kind A · utility
33Cited by
145References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1994 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Mar 2, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B1/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for coating discontinuous fibers with a liquid coating material uses a hopper/blender which entrains the fiber particles in a toroidal mass of moving fibers. The hopper/blender has an inverted conical section with an agitator assembly rotated therein. The agitator assembly has a base disc with tubular blades projecting outwardly therefrom into the conical section. Aft swept lifter blades relative to the direction of rotation are mounted to the agitator disc. A method of applying a liquid coating material to discontinuous fibers is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.