Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1997-12-23
1999-11-23
Weiss, John G.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
6043851, 442 79, 442 86, A61F 1315
Patent
active
059903775
ABSTRACT:
A dual-zoned, three-dimensional, resilient absorbent web is disclosed which is suitable as body-side liner for absorbent articles such as feminine pads, diapers and the like. When used as a liner in absorbent articles, the dual-zoned web combines the advantages of apertured films and soft, nonwoven cover layers in one structure while still being inherently hydrophilic. The liner comprises a web of wet-resilient, hydrophilic basesheet having a three-dimensional topography comprising elevated regions onto which hydrophobic matter is deposited or printed and a plurality of spaced apart depressed regions. In a preferred embodiment, the hydrophobic matter applied to the elevated regions of the basesheet comprises hydrophobic fibers in a contiguous nonwoven web which has been apertured or provided with slits or other openings, such that the apertures or openings overlay a portion of the depressed regions. The elevated hydrophobic regions enhance dry feel and promote fluid flow toward the lower hydrophilic regions, which comprise the exposed depressed regions of the basesheet. The basesheet is preferably in liquid communication with underlying absorbent material, most preferably a stabilized airlaid cellulosic material or compressed stabilized fluff such that the absorbent material can wick fluid out of the basesheet by capillary action. When soft, hydrophobic fibers are deposited on the elevated regions, the liner also has a soft, cloth-like feel in addition to a dry feel in use.
REFERENCES:
patent: 2391621 (1945-12-01), Powell, III et al.
patent: 2576914 (1951-12-01), Barrett
patent: 3020178 (1962-02-01), Sweeney et al.
patent: 3165485 (1965-01-01), Ilnyckyj
patent: 3224926 (1965-12-01), Bernardin
patent: 3287149 (1966-11-01), Dooley et al.
patent: 3339550 (1967-09-01), Van Haaften
patent: 3417040 (1968-12-01), Kremer
patent: 3455778 (1969-07-01), Bernardin
patent: 3485706 (1969-12-01), Evans
patent: 3489148 (1970-01-01), Duncan et al.
patent: 3494821 (1970-02-01), Evans
patent: 3520842 (1970-07-01), Crean
patent: 3556932 (1971-01-01), Coscia et al.
patent: 3556933 (1971-01-01), Williams et al.
patent: 3629171 (1971-12-01), Kremer et al.
patent: 3695269 (1972-10-01), Malaney
patent: 3700623 (1972-10-01), Keim
patent: 3765997 (1973-10-01), Dunning
patent: 3772076 (1973-11-01), Keim
patent: 3809089 (1974-05-01), Hedstrom et al.
patent: 3812000 (1974-05-01), Salvucci, Jr. et al.
patent: 3838692 (1974-10-01), Levesque
patent: 3885158 (1975-05-01), Flutie et al.
patent: 3899388 (1975-08-01), Petrovich et al.
patent: 3929135 (1975-12-01), Thompson
patent: 3967623 (1976-07-01), Butterworth et al.
patent: 3976734 (1976-08-01), Dunning et al.
patent: 4041951 (1977-08-01), Sanford
patent: 4100324 (1978-07-01), Anderson et al.
patent: 4113911 (1978-09-01), LaFitte et al.
patent: 4117199 (1978-09-01), Gotoh et al.
patent: 4129528 (1978-12-01), Petrovich et al.
patent: 4147586 (1979-04-01), Petrovich et al.
patent: 4208459 (1980-06-01), Becker et al.
patent: 4222921 (1980-09-01), Van Eenam
patent: 4342314 (1982-08-01), Radel et al.
patent: 4391869 (1983-07-01), Cook et al.
patent: 4425130 (1984-01-01), DesMarais
patent: 4445970 (1984-05-01), Post et al.
patent: 4524474 (1985-06-01), Svensson
patent: 4556450 (1985-12-01), Chuang et al.
patent: 4588457 (1986-05-01), Crenshaw et al.
patent: 4610915 (1986-09-01), Crenshaw et al.
patent: 4626254 (1986-12-01), Widlund et al.
patent: 4675394 (1987-06-01), Solarek et al.
patent: 4725473 (1988-02-01), Van Gompel et al.
patent: 4741941 (1988-05-01), Englbert et al.
patent: 4781710 (1988-11-01), Megison et al.
patent: 4879170 (1989-11-01), Radwanski et al.
patent: 4929495 (1990-05-01), Stanislawczyk
patent: 4931355 (1990-06-01), Radwanski et al.
patent: 4981557 (1991-01-01), Bjorkquist
patent: 5008344 (1991-04-01), Bjorkquist
patent: 5011864 (1991-04-01), Nielsen et al.
patent: 5048589 (1991-09-01), Cook et al.
patent: 5069548 (1991-12-01), Boehnlein
patent: 5085736 (1992-02-01), Bjorkquist
patent: 5156902 (1992-10-01), Pieper et al.
patent: 5188625 (1993-02-01), Van Iten et al.
patent: 5230776 (1993-07-01), Andersson et al.
patent: 5246545 (1993-09-01), Ampulski et al.
patent: 5302382 (1994-04-01), Kasprzak
patent: 5348620 (1994-09-01), Hermans et al.
patent: 5368910 (1994-11-01), Langdon
patent: 5389202 (1995-02-01), Everhart et al.
patent: 5399412 (1995-03-01), Sudall et al.
patent: 5411636 (1995-05-01), Hermans et al.
patent: 5423788 (1995-06-01), Rollins et al.
patent: 5429686 (1995-07-01), Chiu et al.
patent: 5431643 (1995-07-01), Ouellette et al.
patent: 5437653 (1995-08-01), Gilman et al.
patent: 5454801 (1995-10-01), Lauritzen
patent: 5478335 (1995-12-01), Colbert
patent: 5491190 (1996-02-01), Sandvick et al.
patent: 5492598 (1996-02-01), Hermans et al.
patent: 5501768 (1996-03-01), Hermans et al.
patent: 5516572 (1996-05-01), Roe
patent: 5536555 (1996-07-01), Zelazoski et al.
patent: 5552020 (1996-09-01), Smith et al.
patent: 5562645 (1996-10-01), Tanzer et al.
patent: 5591306 (1997-01-01), Kaun
patent: 5591309 (1997-01-01), Rugowski et al.
patent: 5598643 (1997-02-01), Chuang et al.
patent: 5601871 (1997-02-01), Krzysik
patent: 5635191 (1997-06-01), Roe et al.
patent: 5653930 (1997-08-01), Noda et al.
patent: 5667636 (1997-09-01), Engel et al.
patent: 5670110 (1997-09-01), Dirk et al.
Derwent World Patent Database abstract of GB 1,593,331: Description of Kemi Oy, "Water Resistant Paper And Board."
AATCC Test Method 66-1990, Technical Manual of the American Association of Textile Chemists and Colorists, 1995, pp. 99-100.
Adams, Kurt L., Bernard Miller, and Ludwig Rebenfeld, "Forced In-Plane Flow of an Epoxy Resin in Fibrous Networks," Polymer Engineering And Science, Mid-Nov., 1986, vol. 26, No. 20, pp. 1434-1441.
Back, Ernst L., "The Pore Anisotropy of Paper Products and Fibre Building Boards," Svensk Papperstidning arg. 69, Nr. 7, Apr. 15, 1966, pp. 219-224.
Bear, Jacob, "Dynamics of Fluids in Porous Media," American Elsevier, New York, NY, 1972, pp. 136-151.
Bieman, Leonard H., Kevin G. Harding, and Albert Boehnlein, "Absolute Measurement Using Field Shifted Moire," SPIE Optical Conference Proceedings, Nov. 1991, vol. 1614, pp. 259-264.
Bowden, Edward V., "Non-Contact Drying and Turning--the `On Machine` Technology of the Nineties," Appita, vol. 44, No. 1, Jan. 1991, pp. 41-46.
Cadeyes Product Guide, Medar, Inc., Farmington Hills, MI, 1994, pp. 1-19.
Dullien, F. A. L., "Porous Media: Fluid Transport and Pore Structure," Academic Press, New York, 1979, pp. 78-83
Horstmann, Diane H., Jeffrey D. Lindsay, and Robert A. Stratton, "Using Edge-Flow Tests to Examine the In-Plane Anisotropic Permeability of Paper," Tappi Journal, 74(4), Apr. 1991, pp. 241-247.
Lindsay, Jeffrey D. and Jill R. Wallin, "Characterization of In-Plane Fluid Flow in Paper," AlChE Proceedings 1989 and 1990 Forest Products Symposium, Tappi Press, Atlanta, GA, 1992, pp. 121-129.
Lindsay, Jeffrey D., "Displacement Dewatering To Maintain Bulk," Paperi Ja Puu--Paper And Timber, vol. 74, No. 3, 1992, pp. 232-242.
Lindsay, Jeffrey D. and Paul H. Brady, "Studies of Anisotropic Permeability With Applications to Water Removal in Fibrous Webs: Part 1," Tappi Journal, vol. 76, No. 9, Sep. 1993, pp. 119-125.
Lindsay, Jeffrey D. and Paul H. Brady, "Studies of Anisotropic Permeability With Applications to Water Removal in Fibrous Webs: Part 2," Tappi Journal, vol. 76, No. 11, Nov. 1993, pp. 167-174.
Lindsay, Jeffrey D., "Relative Flow Porosity in Fibrous Media: Measurements and Analysis, Including Dispersion Effects," Tappi Journal, vol. 77, No. 6, Jun. 1994, pp. 225-239.
Mummery, Leigh, "Surface Texture Analysis: The Handbook," Hommelwerke GmbH, Muhlhausen, Germany, 1990, pp. 28-29.
Chen Fung-Jou
Kamps Richard Joseph
Lake Andrew Michael
Lindsay Jeffrey Dean
Robinson Mark Louis
Croft Gregory E.
Kimberly--Clark Worldwide, Inc.
Ruhl Dennis
Weiss John G.
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