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:
Jun. 30, 1992
Filed:
Feb. 15, 1991
Applicant:
Inventors:
Assignee:
Akzo N.V., , NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210640 ; 55 16 ; 264 451 ;
Abstract
In a method for manufacturing hollow fiber piles, at least one hollow fiber strand is wound spirally onto a rotating drum having a polygonal cross section to form superimposed hollow fiber layers thereon, forming a hollow fiber roll on the drum. Once the desired number of hollow fiber layers has been formed on the rotating drum, segments of a desired shape are separated from substantially planar regions of the hollow fiber roll. Simultaneously, or immediately following this separation, adjacent end regions of the hollow fibers are connected with one another at least spotwise.