Apparatus and method for introducing additives to fibrous products
US5232638A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Sep 18, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/72
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for expanding the fiber column produced by a rotary fiber manufacturing unit and intermingling additive particles with the fibers. A rotating bell-shaped shell is mounted beneath the rotary disc of the manufacturing unit so that the lower portion of the shell is in the path of the fiber column, causing the column to be outwardly deflected. Additive particles are introduced from within or beneath the shell and are radially directed into the fiber column. Liquid binder may be introduced to the fibers and water may be directed onto the inner surface of the shell to cool the shell to prevent curing of binder coming in contact with the shell. The fibers may be glass fibers and the particles may be foamed resin, fibers or particles of various types.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.