Plastic article or earthenware shaping or treating: apparatus – Air felting type shaping means – Means forming stratified products
Patent
1989-05-02
1990-05-22
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Air felting type shaping means
Means forming stratified products
118308, 264113, 425 831, A29D 700
Patent
active
049273469
ABSTRACT:
An apparatus for forming a non-woven pad consisting of fibrous material in which highly moisture-absorbent particles are intermixed with the fibrous material throughout a predetermined portion of the thickness of the non-woven pad. The non-woven pad is formed atop a conveyor moving through a chamber which has a duct connected to a source of vacuum operable to draw fibrous material injected into the chamber onto the conveyor. A spray gun or an extension thereof is positioned within the chamber relative to the fibrous material atop the conveyor, and is operated to discharge moisture-absorbent material at a predetermined velocity, such that the moisture-absorbent material is intermixed with the fibrous material throughout preferably a center layer of the thickness of the non-woven pad while forming boundary layers on either side of the center layer which are substantially free of moisture-absorbent material. The spray gun preferably operated intermittently to form spaced, sharply defined areas along the length and width of the non-woven pad wherein each area has moisture-absorbent material interspersed throughout a portion of the thickness thereof.
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Kaiser Thomas A.
Mulder Douglas C.
O'Ryan David E.
Schneider Douglas A.
Ward Rodney L.
Bushey C. Scott
Nordson Corporation
Woo Jay H.
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