The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 1984
Filed:
Feb. 17, 1983
Michael Ring, Warwick, NY (US);
Peter Angelini, Central Valley, NY (US);
International Paper Company, New York, NY (US);
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 dispersion fibers by intercepting the stream along a curvilinear path at a lateral stream boundary and washing accumulated fiber bundles and lumps above the prescribed size from the screen for discharge from the process and passing the other dispersion fibers for use in the wet-laying process.