Twin wire former assembly

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6503372
SERIAL NO

09702810

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
AHLSTROM GLASSFIBRE OYFINLAND CARLE HU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jansson, Juhani Karhula, FI 12 393
Laine, Eino Kyminlinna, FI 8 347
Rokman, Kay Karhula, FI 20 487

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