Method for screening, separating, and removing fiber bundles, lumps, knots and foreign matter from aqueous dispersions used in forming non-woven fabrics by wet-laying
US4466862A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1983 |
| Grant date | Aug 21, 1984 |
| Priority date | — |
| Expiry date | Feb 17, 2003 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21D5/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and method for use in making non-woven fabrics by wet-laying an aqueous dispersion. The apparatus and method screens, separates and remover fiber defects and foreign matter above a prescribed size from other dispersion fibers. The apparatus includes a housing having an inlet and several outlets, an accelerator within the housing for creating relative movement between the dispersion fluid and fibers to axially align at least some of the fibers in the direction of dispersion flow to disperse those fibers in the dispersion and a separator within the housing for separating bundles and lumps above a prescribed size from other dispersion fibers. The housing discharges the bundles and lumps above the prescribed size from the process at one outlet, and passes the other dispersion fibers through to another outlet for use in the wet-laying process. The method includes the steps of producing a stream of dispersion, directing the stream over a curvilinear path, creating relative movement between the dispersion fibers and fluid to axially align at least some of the fibers in the direction of dispersion flow, screening fiber bundles and lumps above a prescribed size from other dispersi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.