Patent ID: 6238518
Filing Date: 2001-05-29
Classification: D21F

Abstract:
A method of producing a non-woven web of cellulose or synthetic fibrous material, comprising the steps of:(a) forming a first foam slurry of air, water, cellulose or synthetic fibers, and surfactant;(b) forming a second foam slurry of air, water, cellulose or synthetic fibers, and surfactant;(c) moving a first foraminous element in a first path;(d) moving a second foraminous element in a second path;(e) passing the first foam slurry directly into contact with the first foraminous material moving in the first path;(f) passing the second foam slurry directly into contact with the second foraminous material moving in the second path;(g) passing a third material, different from the first and second foam slurries, in between the first and second foam slurries so that the third material does not directly contact either of the first and second foraminous elements; and(h) forming a fibrous web from the first and second foam slurries and third material by withdrawing foam and liquid from the slurries through the first and second foraminous elements.