Method of making a fibrous pack
US5900206A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/7687
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of making a fibrous pack includes centrifuging at least two sets of mineral fibers from molten mineral material using at least two rotary mineral fiber spinners that are arranged in a machine direction along a collection surface, directing each set of the mineral fibers into a downwardly moving veil beneath one of the mineral fiber spinners, generating a downwardly moving array of aligned organic fibers from at least one orificed die that is spaced apart from each of the mineral fiber spinners and directing the array into contact with the mineral fibers, and collecting the mineral fibers and organic fibers as a fibrous pack. There is also provided apparatus for making a fibrous pack including at least two mineral fiber spinners that are arranged in a machine direction along a collection surface for centrifuging at least two sets of mineral fibers from molten mineral material, means for directing each set of mineral fibers into a downwardly moving veil beneath one of the mineral fiber spinners, at least one orificed die that is spaced from each of the mineral fiber spinners for generating a downwardly moving array of aligned organic fibers and directing the array into conta…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.