초록 ▼

A non-woven web of cellulosic synthetic fibrous material is produced using a twin wire former. The former may have a closed first end and closed first and second sides, and a second end provided by first and second moving foraminous elements. An interior structure between the sides and second end ma

A non-woven web of cellulosic synthetic fibrous material is produced using a twin wire former. The former may have a closed first end and closed first and second sides, and a second end provided by first and second moving foraminous elements. An interior structure between the sides and second end may have at least first and second different length pluralities of conduits extending from the former first end toward the second end, and defining by themselves, or with wall elements, the interior volume into a first volume and a second volume on opposite sides thereof. A first fiber/foam slurry is introduced into the first volume and a second fiber/foam slurry in the second volume, and suction box assemblies are provided on the opposite sides of the foraminous elements from the interior volume for withdrawing foam from the slurries to forming a non-woven web on the foraminous elements. At least a third material is introduced using the interior structure so that the third material does not come into direct contact with either foraminous element, and the third material may form stripes in the web. The positions of the at least third material third conduits may be adjusted one or both of vertically and horizontally.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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

[ What is claimed is:] [1.]1. 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.