Method and apparatus for depositing moisture-absorbent and thermoplastic material in a substrate

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United States of America Patent

PATENT NO 5143680
SERIAL NO

07525880

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and apparatus for forming a non-woven pad of fibrous material is provided in which highly moisture-absorbent particles and fibers of thermoplastic material are intermixed with the fibrous material throughout one or more predetermined portions of the thickness of the non-woven pad while maintaining other portions of the thickness of the pad substantially free of highly moisture-absorbent particles and/or thermoplastic fiber material. The non-woven pad is formed on one side of a conveyor moving through a forming chamber which has a duct connected to a source of vacuum operable to draw fibrous material injected into the chamber onto the conveyor. One dispenser discharges the highly moisture-absorbent material at a predetermined location relative to the fibrous material being drawn onto the conveyor, and at least one other dispenser discharges the thermoplastic fiber material into the chamber at a location to intermix the thermoplastic fiber material with the fibrous material and highly moisture-absorbent material being drawn onto the conveyor at the predetermined location, and/or to intermix the thermoplastic fiber materials with the fibrous material in areas of the thickness of the non-woven pad on one or both sides of the highly moisture-absorbent material.

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Patent Owner(s)

Patent OwnerAddress
NORDSON CORPORATION28601 CLEMENS RD WESTLAKE OH 44145-1148

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Becker, Richard A Lorain, OH 20 718
Fena, Ernest J Rocky River, OH 8 131
Fimmen, Charles L Elyria, OH 1 32
Folden, David W Delmont, PA 1 32
Molnar, Julius J Amherst, OH 10 241
Schneider, Douglas A Lorain, OH 4 134
Selestak, David M Avon, OH 3 86
Shlapak, Robert Wakeman, OH 1 32

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