Discontinuous Coating Or Treatment Of Layer Patents (Class 604/382)
  • Patent number: 7820875
    Abstract: Absorbent articles having a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent core disposed between said topsheet and said backsheet are disclosed. The backsheet has a physical variation along at least one axis, wherein said physical variation defines a first backsheet zone and a second backsheet zone, and at least one elastomeric element having at least one primary direction of stretch, said elastomeric element at least partially overlapping and joined to first and/or second backsheet zone, wherein a relaxed pathlength of said elastomeric element in the primary direction of stretch is less than a total pathlength of said backsheet in the region of overlap. The physical variation is a measurable difference as measured by a physical property selected from the group consisting of basis weight, thickness and density.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: October 26, 2010
    Assignee: The Procter & Gamble Company
    Inventors: Donald Carroll Roe, Pankaj Nigam, Mark James Kline, Jeromy Thomas Raycheck, Carl Louis Bergman
  • Patent number: 7759540
    Abstract: The present invention relates generally to an absorbent core for an absorbent article, and more particularly to an absorbent core having zoned absorbency due to specific placement of adhesives or specific lack of adhesive. Such absorbent cores provide the flexibility of creating precise zoning of particular properties throughout the core, and they provide improved comfort and fit.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: July 20, 2010
    Assignee: Paragon Trade Brands, LLC
    Inventors: John Litvay, Andrew Baker
  • Patent number: 7686790
    Abstract: An absorbent feminine care article (20) having a longitudinal direction (22), a lateral direction (24), first and second longitudinally opposed end portions (72, 72a), and an intermediate portion (76) located between the end portions. The article (20) comprises an absorbent body structure (30) sandwiched between a cover (26) and a baffle (28). In a particular aspect, the absorbent structure (30) can include one or more distinctively configured embossment regions (34), and the embossment regions can be distributed along the intermediate portion (76) of the article.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: March 30, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Shelley R. Rasmussen, Marcus D. Weiher, Teresa M. Zander, Laura J. Walker
  • Patent number: 7612249
    Abstract: A disposable absorbent article has a liner, an outer cover and an absorbent body therebetween for absorbing liquid body waste penetrating the liner. A flow control layer having lateral side edges is positioned between the liner and the absorbent body, with at least a portion of each lateral side edge of the flow control layer spaced laterally inward from lateral side edges of the absorbent body. The flow control layer is at least in part liquid impermeable to retard the flow of liquid body waste penetrating the liner toward the absorbent body whereby at least a portion of the liquid body waste that penetrates the liner is directed by the flow control layer to migrate laterally outward toward the lateral side edges of the flow control layer for subsequent flow around the flow control layer toward the absorbent body.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: November 3, 2009
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Richard L. Underhill, Michael J. Niemeyer, Marianne K. Leick
  • Patent number: 7588822
    Abstract: A method of surface cross-linking superabsorbent polymer particles using UV irradiation is provided. The superabsorbent polymer particles for use in the method have a relatively high degree of neutralization. Brønsted acids are selectively applied onto the surface of the superabsorbent polymer particles to selectively facilitate a relatively high number of protonated carboxyl groups at the surface of the superabsorbent polymer particles while the relatively high degree of neutralization in the core of the superabsorbent polymer particles remains substantially unaffected.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: September 15, 2009
    Assignee: The Procter & Gamble Co.
    Inventors: Andreas Flohr, Torsten Lindner, Yoshiro Mitsukami
  • Patent number: 7547471
    Abstract: The present invention relates to a material for implantation, which is characterised in that the surface of the material partially comprises at least one area of an inorganic, catalytical substance for improved biocompatibility of the material. Methods for the manufacturing of the material for implantation and the use thereof is also disclosed.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: June 16, 2009
    Assignee: La Jolla Bioengineering Institute
    Inventors: Lars M. Bjursten, John A. Frangos
  • Patent number: 7435380
    Abstract: A pseudo-plastic or thixotropic carrier having anti-malodorous components dissolved or suspended therein is sprayed on the internal surfaces of an ostomy bag or pouch. The viscoelastic properties of the carrier allow the composition to be conveniently dispensed from a spray bottle into the ostomy bag and retained on the inner walls thereof without being displaced therefrom by incoming waste during use of the ostomy bag. This allows the composition to continue to deodorize the ostomy bag headspace even after waste material begins to fill the bag.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: October 14, 2008
    Assignee: Church & Dwight Co., Inc.
    Inventor: Anthony E. Winston
  • Patent number: 7432413
    Abstract: A disposable absorbent article worn about the lower torso of a wearer includes at least one pair of side panels connecting a first waist region to a second waist region forming a waist opening and a pair of leg openings. Each side panel includes a waist region, a hip region and a leg region wherein the waist region, the hip region and the leg region differs structurally, functionally and visually to provide an improved initial fit and sustained fit while exhibiting a garment-like appearance.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: October 7, 2008
    Assignee: The Procter and Gamble Company
    Inventors: Donald Carroll Roe, Barry Robert Feist, Krista Beth Comstock, Lisa Jane Goodlander
  • Publication number: 20080221540
    Abstract: A technique for imparting latent elasticity to components of an absorbent article is provided. More specifically, a latent elastic film that contains a crosslinkable semi-crystalline polyolefin is initially incorporated into an absorbent article. The film is not highly elastic prior to crosslinking and is thus dimensionally stable. Consequently, the film need not be maintained in a mechanically stretched condition during attachment to other components of the absorbent article, which provides for greater freedom in the location and manner in which the components are attached together. Once incorporated into the absorbent article, the semi-crystalline polyolefin is crosslinked to form a three-dimensional network having elastic memory. The film may also be heat activated, either through crosslinking or an additional step, to cause the film to shrink and further improve its stretch characteristics.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 11, 2008
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventors: Oomman P. Thomas, C. Allen Smith, James Austin
  • Patent number: 7402157
    Abstract: The absorbent article provides a signal viewable from the top surface of the absorbent article that gives a perception of depth within the absorbent article. This creation of depth perception is accomplished by the use of at least two tones within a color and/or by the use of multiple tones and multiple colors operating together to create a perception of depth within the absorbent article.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: July 22, 2008
    Assignee: The Procter & Gamble Company
    Inventors: Patricia Lee Christon, Bryan Keith Feller, Ronda Lynn Glassmeyer, Rosa Alejandra Hernandez
  • Patent number: 7388123
    Abstract: An absorbent article, such as a feminine care product, includes a liquid permeable top cover, a generally liquid impermeable outer cover, and an absorbent structure disposed between the top cover and outer cover. A band of spaced apart deposits of a barrier substance material, such as a phase-change liquid, are defined on the top cover (inner or outer surface) along a portion of opposite lateral sides of the article. The deposits have a desired height of topography with respect to a surface of the top cover. The deposits are defined such that areas of the top cover are exposed within the band, the band thereby being permeable to bodily fluids insulting the article within the band or from above the band while acting as a fluid barrier against lateral flow of bodily fluids across the band.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: June 17, 2008
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Christine M. Cowell, Teresa D. Petryk, Patricia A. Stern
  • Patent number: 7312372
    Abstract: Disclosed is an elongated absorbent article including a liquid absorbent layer. In a region where the liquid absorbent layer is present, compressed grooves are disposed to extend symmetrically about a longitudinal centerline, defining a central region therebetween and side regions laterally outside the central region and adjacent the compressed grooves. The central region includes front, intermediate and rear central regions. The intermediate central region has a widened portion in which the separation distance is larger than in regions positioned forward and rearward thereof. Stiffness of the side regions is lower in portions laterally outside the intermediate central region than in portions laterally outside the front and rear central regions.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: December 25, 2007
    Assignee: Uni-Charm Corporation
    Inventors: Takuya Miyama, Masataka Kinoshita, Jun Kudo, Kenichiro Kuroda, Tatsuya Tamura, Shimpei Komatsu
  • Patent number: 6972011
    Abstract: In an ultra-thin absorbent sheet member 1a in which an absorbent polymer powder 3 is adhered to one surface of a first nonwoven fabric 2 by a hotmelt adhesive such that absorbent polymer powder present areas 2c and absorbent polymer powder absent areas 2a, 2b exist; the absorbent polymer powder absent areas are present at opposite widthwise ends (2a) of the ultra-thin absorbent sheet member and at least one position (2b) between the opposite ends; the absorbent polymer powder 3 is bonded to the first nonwoven fabric 2 by first hotmelt adhesive layers S1 formed on an upper side of the first nonwoven fabric 2 and on a lower side of the absorbent polymer powder 3 and a second hotmelt adhesive layer S2 formed to cover upper sides of the absorbent polymer powder present areas 2c and the absorbent polymer powder absent areas 2a, 2b; and the first hotmelt adhesive layer S1 and the second hotmelt adhesive layer S2 are both made of an aggregate of linear hotmelt adhesive pieces.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: December 6, 2005
    Assignee: Toyo Eizai Kabushiki Kaisha
    Inventors: Satoshi Maeda, Kenji Nakaoka, Kenichi Uchimoto, Tadashi Hoshikawa, Masaru Fujioka, Kazuyo Mori
  • Patent number: 6838591
    Abstract: A disposable absorbent article, e.g., a diaper, having a top sheet, a back sheet, a core and a fluid acquisition system. The fluid acquisition system is formed by wrapping a layer of a non-woven material about the core, so that the marginal edge portions of the layer overlap each other over the upper surface of the core. The overlapping marginal edge portions are hydrophillic to form a dual layer fluid acquisition system. The remainder of the layer of non-woven material is hydrophobic. An additional layer can be located adjacent the overlapping portions to form a three layer acquisition system.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: January 4, 2005
    Assignee: Tyco Healthcare Retail Services, AG
    Inventors: Andrew Waksmundzki, Kim Babusik, Joan Rodgers
  • Patent number: 6803334
    Abstract: Disclosed is an absorbent article including: a liquid permeable surface layer; a backing sheet; and an absorbent layer interposed between the surface layer and the backing sheet. The surface layer includes: a porous film having a plurality of through holes; and a fibrous layer disposed on the liquid-receiving face of the porous film. The fibrous layer is of a plurality of strips extending in parallel and spaced apart from each other. Each strip of the fibrous layer is fixed to the porous film at spaced fixing portions, so that the porous film is exposed between adjacent strips of the fibrous layer.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: October 12, 2004
    Assignee: Uni-Charm Corporation
    Inventors: Satoshi Mizutani, Wataru Yoshimasa, Megumi Tokumoto
  • Publication number: 20040127872
    Abstract: An absorbent article, such as a feminine care product, includes a liquid permeable liner layer, a generally liquid impermeable outer cover layer, and an absorbent layer disposed between the liner layer and outer cover layer. Spaced apart solidified deposits of a phase-change liquid are defined one either the liner layer top surface, bottom surface or both surfaces, and/or other layers along the other layers upper or lower surfaces. The deposits are defined such that areas of the liner layer top surface is exposed thereby being permeable to bodily exudates insulting the article between the deposits while acting as a barrier against liquid that may flow back to the liner layer or other treated layers from the absorbent layer or other layers contained in the absorbent article.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 1, 2004
    Inventors: Teresa De Jesus Petryk, Jason Matthew English, Rebecca Willey Griffin, Varunesh Sharma, Patricia A. Stern
  • Publication number: 20040030315
    Abstract: The present invention relates to disposable absorbent articles comprising skin health and odor control additives for the treatment and prevention of skin irritation. The skin health treatment additive comprises an oil soluble wax that forms a tight lattice to protect the skin, and vitamins, lipids and triglycerides to protect and replenish the skin. Such disposable absorbent articles of the present invention are especially advantageous for the treatment of skin breakdown leading to partial full thickness wounds or pressure ulcers.
    Type: Application
    Filed: August 8, 2002
    Publication date: February 12, 2004
    Inventor: JoAnn Brooks
  • Patent number: 6685686
    Abstract: Absorbent article such as a diaper, an incontinence guard, a pantyliner or a sanitary napkin, including a liquid-pervious topsheet (3), a liquid-impermeable backsheet (2), and an absorbent body (4) enclosed therebetween, wherein the topsheet (3) and absorbent body (4) either directly or via at least one intermediate layer are joined partly by a first adhesive (5) and partly by a second adhesive (6) The surface which is constituted of the topsheet (3) and which is adhesively joined with the first adhesive (5) and the second adhesive (6) is formed into a three-dimensional structure having alternating raised (8) and recessed regions (7), wherein the first adhesive (5) is arranged in the recessed regions (7) and the second adhesive (6) is arranged in the raised regions (8).
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: February 3, 2004
    Assignee: SCA Hygiene Products AB
    Inventors: Kent Hermansson, Sofia Roxendal
  • Patent number: 6646180
    Abstract: A disposable absorbent garment having a topsheet, a backsheet and an absorbent core located between the topsheet and backsheet. The absorbent core is formed from a folded laminate having an upper layer, a lower layer and a central fibrous layer that are bonded together and together assist to maintain the dry and wet integrity of the core. The fibrous layer includes about 50 to 95 percent by weight superabsorbent polymer and about 5 to 50 percent by weight stabilization additives. The upper and lower layers may be tissue, airlaid fluff pulp or synthetic non-woven fibrous layers. Folding the thin absorbent laminate provides an absorbent core that can handle large doses of urine, by providing a central channel having a free volume for temporary liquid storage and increasing the surface area of the laminate available for liquid absorption. The garment thus formed is thin, lightweight and economical.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: November 11, 2003
    Assignee: Paragon Trade Brands, Inc.
    Inventor: Harry Chmielewski
  • Patent number: 6627291
    Abstract: The present invention provides new patterned porous substrates and a new method for forming the new patterned porous substrates containing one or more selected patterns which is applicable to all porous structures regardless of their polymeric content, their method of manufacture or their UV absorbing characteristics.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: September 30, 2003
    Assignee: Millipore Corporation
    Inventors: Phillip Clark, Wilson Moya
  • Publication number: 20030171729
    Abstract: This invention relates to a containment tissue of an absorbent article such as a diaper, treated to have regions with hydrophobic properties to maximize the strength of the containment tissue when wet. The result is less superabsorbent material contacting the user and therefore less skin irritation. Additional benefits of this invention include enhanced leakage protection and reduced skin wetting, which also reduces skin irritation. A hydrophobic agent such as a sizing agent or adhesive is used to create zones of water resiliency on the containment tissue in various regions, patterns, and/or configurations. The treatments of the containment tissue are applied by known application methods such as gravure printing, spraying, or ink jet printing. Liquid insults easily wick through untreated containment tissue but stop at the boundaries of treated regions. This provides a method of leakage control when wicking is halted before the liquid reaches the edges of the absorbent article.
    Type: Application
    Filed: December 28, 2001
    Publication date: September 11, 2003
    Inventors: James Martin Kaun, Kambiz Bayat Makoui, Dean Michael Laux, Toan Thanh LeMinh, Brenda Marie Nelson, John Olszewski
  • Patent number: 6608237
    Abstract: An absorbent article (10) includes a backsheet layer (30), a liquid permeable topsheet layer (28), and an absorbent body (32) sandwiched between the backsheet and topsheet layers. The absorbent body (32) includes a first fibrous stratum (52) having a first quantity of absorbent fibers, a second fibrous stratum (54) having a second quantity of absorbent fibers, and at least a third fibrous stratum (56) which is located between and integrally formed with the first and second fibrous strata (52, 54). In particular aspects, the third fibrous stratum (56) includes an operative quantity of a substantially hydrophilic, wet-strength agent. In other aspects, the wet-strength agent is distributed in the third quantity of absorbent fibers to render the third fibrous stratum (56) substantially non-dispersible.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: August 19, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Yong Li, Wendy Lynn Van Dyke, Gary Douglas Williams, Anthony John Wisneski, Bernhardt Edward Kressner, Sridhar Ranganathan, Michael Franklin Kalmon
  • Publication number: 20030135174
    Abstract: An adsorbent fabric includes a color masking layer including fluid impermeable areas disposed on a fluid permeable support fabric in spaced relationship.
    Type: Application
    Filed: August 2, 2002
    Publication date: July 17, 2003
    Inventors: Herman P. Benecke, William A. Ivancic, Virginia M. Northrup, David Tipple, J. Michael Spangler, Jean E. Schelhorn, James M. Sonnett, Elizabeth Drotleff, C. Michael Gegenheimer, Jeffrey Cafmeyer
  • Patent number: 6573203
    Abstract: The present invention may provide a towel desirably including first and second layers having cellulosic fibers and a repellant agent. The first and second layers may substantially sandwich a third layer having cellulosic fibers with higher absorbency than the first and second layers. All three layers may form a single ply.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: June 3, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Wesley James McConnell, Jay Chiehlung Hsu, Joseph Mitchell
  • Publication number: 20030100875
    Abstract: There is disclosed an absorbent article including: a liquid-permeable top sheet; a back sheet; and an absorbent core sandwiched between the top sheet and back sheet. The back sheet is formed of a resin film containing an inorganic filler in a resin base material. The back sheet includes: a stretched moisture-permeable region; and a high optical transmittance region having a lower degree of orientation than that of the moisture-permeable region and/or left unstretched.
    Type: Application
    Filed: December 31, 2002
    Publication date: May 29, 2003
    Applicant: UNI-CHARM CORPORATION
    Inventors: Makoto Suekane, Toshio Inoue, Shigeo Imai
  • Patent number: 6565961
    Abstract: An absorbent article containing a composite mixture of absorbent macroporous particles and binder particles. Preferably, the absorbent macroporous particles are those having a macroporous structure which allow for the rapid flow of liquid therein, e.g., aerogels, xerogels, cryogels, or mixtures thereof. The absorbent articles produced thereby are preferably thin and lightweight, but maintain an ample rate of absorption allowing for a more rapid uptake of higher volumes of liquids.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: May 20, 2003
    Assignee: Koslow Technologies Corporation
    Inventor: Evan Koslow
  • Patent number: 6548732
    Abstract: An absorbent article that provides leakage protection and/or skin protection, as well as methods for using and preparing the absorbent article and novel compositions and composites for use in the absorbent article, is disclosed. The absorbent article comprises a permeable topsheet; a substantially impermeable backsheet; an absorbent core positioned between said permeable topsheet and said substantially impermeable backsheet; and a hydrophobic composition selectively disposed on the absorbent article to contain leakage. The hydrophobic composition is disposed at one or more leak protection zones.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: April 15, 2003
    Assignee: Paragon Trade Brands, Inc.
    Inventors: Carol L. Erdman, Harry J. Chmielewski
  • Patent number: 6531642
    Abstract: Provided is a water-decomposable absorbent article including a water-decomposable back layer, a water-decomposable and liquid-pervious surface layer, and a water-decomposable absorbent layer sandwiched between the back layer and the surface layer and having a smaller planar dimension than the back layer and the surface layer. The absorbent article includes an inner region in which the absorbent layer is present, and an outer peripheral region having the back layer and the surface layer bonded to each other without interposing the absorbent layer therebetween and being formed in a predetermined width spaced from a peripheral edge of the absorbent article. A thermoplastic water-soluble adhesive is applied in a strip shape between the back layer and the surface layer in a predetermined width along the peripheral edge in the outer peripheral region. The back layer and the surface layer are heat-sealed with the thermoplastic water-soluble adhesive disposed therebetween in the outer peripheral region.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: March 11, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Nobuhiro Kurata, Mitsuhiro Wada, Megumi Tokumoto
  • Patent number: 6528698
    Abstract: Provided is an absorbent article including a back sheet, an absorbent layer, and a top sheet covering at least the absorbent layer. The top sheet includes a fiber layer, and a resin layer which is applied to the surface of the fiber layer in a plurality of band-shaped rows. At least one of the rows is a discontinuous row composed of discontinuous band-shaped portions arranged at a spacing in the axial direction of the row. The area not having the resin layer between adjacent discontinuous band-shaped portions in the axial direction of the row is located at least in the region covering the absorbent layer. Accordingly, the top sheet is liquid-permeable between the adjacent rows and in the area not having the resin layer between adjacent discontinuous band-shaped portions in the axial direction of the row.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: March 4, 2003
    Assignee: Uni-Charm Corporation
    Inventors: Satoshi Mizutani, Akiko Ota, Tatsuya Tamura
  • Patent number: 6525239
    Abstract: A disposable absorbent thong-shaped pantiliner. The pantiliner is in the form of a generally planar pad having a longitudinal central axis and a generally wedge-shaped periphery including first and second generally concave longitudinal extending sides interconnecting a top end and a bottom end. The pad includes a fluid-pervious top sheet an absorbent core and a fluid impervious back sheet that are bonded together along a first set of non-linear, parallel lines and second set of linear parallel lines. The first set of lines have portions extending generally along each side and the top and bottom end of the pad. The first set of lines also has a fourth portion extending generally along the bottom end of the pad. The second set of lines are located adjacent the bottom end of the pad and extend parallel to the longitudinal axis. The first set of parallel lines merge with the second set of parallel lines adjacent the bottom end of the pad.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: February 25, 2003
    Assignee: Tyco Healthcare Retail Services AG
    Inventor: Robert T. Cole
  • Publication number: 20030036741
    Abstract: A textured airlaid web is disclosed. The textured web is formed on a three-dimensional fabric under sufficient force to cause the web to conform to the surface of the fabric. The textured web includes, on a minute scale, peak areas and valley areas. The peak areas and valley areas can improved the liquid handling properties of the web. For instance, webs can be produced having improved absorbency characteristics and/or wicking characteristics.
    Type: Application
    Filed: December 21, 2001
    Publication date: February 20, 2003
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventors: Rodney L. Abba, Robert J. Makolin, David J. Nickel, Charles W. Colman, Jeffrey Dean Lindsay, Fung-Jou Chen, Julie Marie Bednarz
  • Patent number: 6506961
    Abstract: A disposable absorbent article, e.g., a pantiliner, or other absorbent pad. The pad is an elongated generally planar member having a general hour-glass shape periphery including a pair of concave, side sections interconnecting respective ones of a pair of convex end sections. The pad basically comprises a top-sheet, a fluid absorbent core, and a cover sheet. The top sheet is formed of a fluid pervious material, e.g., a non-woven material, and is disposed over the absorbent core. The absorbent core comprises a fluid absorbing material, e.g., cellulosic fluff and super-absorbent particles, and is disposed over the cover sheet. The cover sheet is formed of a fluid impervious material, e.g., a plastic film. The top-sheet, the fluid absorbent core and the cover sheet are bonded, e.g., thermally bonded, together along plural concentric lines located adjacent the periphery of the pad. The plural concentric lines form a barrier resistant to the egress of fluid out of the periphery of the pad.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: January 14, 2003
    Assignee: Tyco Healthcare Retail Services AG
    Inventor: Ruth Levy
  • Patent number: 6461716
    Abstract: The present invention relates to an apertured web formed from a polymeric film having permanent hydrophilicity which is suitable for use as a topsheet in an absorbent article. One embodiment of the present invention is a multi-layer polymeric film having a first layer, a second layer, and at least one intermediate layer between the first and second layers, where one of the first or second layers is a block copolymer of a polyether and another polymer and the other layer is a hydrophobic layer as defined herein. Methods of producing such webs are also disclosed. The present invention also pertains to absorbent articles which preferably include a topsheet in accordance with the present invention, a backsheet secured to the topsheet, and an absorbent core positioned between the topsheet and the backsheet.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: October 8, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Yann-Per Lee, Hugh Joseph O'Donnell, Andrew Julian Wnuk, Todd Leon Mansfield, Gary Dean LaVon, Fernando Benvegnu
  • Patent number: 6316013
    Abstract: An absorbent article includes a vapor permeable backsheet, a liquid permeable topsheet positioned in facing relation with the backsheet; and an absorbent body located between the backsheet and the topsheet. The absorbent body may include multiple zones of high air permeability. The absorbent article may also include a ventilation layer between the absorbent body and the backsheet and a surge management layer between the absorbent body and the topsheet. The article exhibits improved air exchange within the article during use. As a result, the article maintains the temperature and exhibits substantially reduced levels of hydration of the wearer's skin when in use which renders the skin less susceptible to the viability of microorganisms. The absorbent article may further include lotion formulations and/or treatment compositions thereon for maintaining or improving skin health.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: November 13, 2001
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Susan Carol Paul, Frank Jerrel Akin, Robert Cosmo Di Luccio, Dennis Stein Everhart, Elizabeth Deibler Gadsby, Pamela Jean Mayberry, Audra Stefanik Wright, Ali Yahiaoui, Michael John Faulks, Duane Gerard Krzysik, Karen Marie Menard, David Charles Musil, Frank Andrew Rosch, III, Gordon Allen Shaw, David John Tyrrell, Diane Michele Underhill, Jeffrey Michael Hockersmith, Gunilla Elsa Gillberg-LaForce, Wade Bolton May
  • Patent number: 6293933
    Abstract: The invention relates to a diaper of the kind including outer and inner layers enclosing an absorbing layer, an absorbing body or the like, wherein at least one recess is arranged in the absorbing layer and a liquid passage in line with said recess at the inner covering layer. In addition to the recess in the absorbing layer, there are a number of channels extending from the recess forming together with the recess a storage space defined by the outer and inner layers of the diaper for temporary receiving liquid not yet absorbed and providing an extended liquid absorbing edge surface.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: September 25, 2001
    Assignee: Marlene Sandberg AB
    Inventor: Ove Ahlstrand
  • Patent number: 6153209
    Abstract: The present invention relates to an article having a skin care composition disposed on at least a portion of the article. The skin care composition is a breathable, barrier protectant which can be immobilized on the article and is transferable to the wearer's skin via contact, normal wearer motion and/or body heat. Particularly, the skin care composition should have a water vapor transmission rate of at least about 0.1 gm/m.sup.2 /hr and a barrier property of at least about -25 on Hunter b scale, as measured by a Methylene Blue Dye Method.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: November 28, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Victor Nicholas Vega, Thomas Robert Hanser, Tim Van Hauwermeiren, Donald Carroll Roe
  • Patent number: 6096016
    Abstract: A topsheet for body exudates absorbent article includes a hydrophilic nonwoven fibrous sheet and a plurality of thermoplastic synthetic resin filaments extending in one direction parallel to one another and continuously bonded to an upper surface of the nonwoven fibrous sheet so that a composite sheet of these sheet and filaments have crests and troughs alternately repeating longitudinally of the filaments and respectively extend transversely of the filaments. An apparatus and a method for manufcturing the topsheet are also disclosed, wherein a pair of mutually engageable embossing rolls are used for forming the crests and the troughs onto the coposite sheet.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: August 1, 2000
    Assignee: Uni-Charm Corporation
    Inventors: Tomoko Tsuji, Hisashi Takai, Hiroki Goda
  • Patent number: 6045545
    Abstract: A disposable absorbent article of hygiene includes an absorbent pad disposed between an outer support sheet and an inner cover sheet and has two elasticized side flaps fastened to the cover sheet along the lengthwise edges of the article. Each flap is fastened to the cover sheet over the length of the article by a proximal portion of the flap positioned on an inner side of the absorbent pad, and is folded along the lengthwise direction. The flap is also fastened to the cover sheet in the folded state at end regions of the article so that a distal edge of the flap overlaps the proximal edge over the length of the article, and remains unattached in a region between the end regions to form a pouch.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: April 4, 2000
    Assignee: Peaudouce
    Inventors: Philippe Vandemoortele, Jean-Pierre Koczab, Albert Villez
  • Patent number: 6025535
    Abstract: The present invention provides a fluid previous fibrous, preferably nonwoven, web having a first surface and a second surface. The web comprises a hydrophilic nonwoven web comprising a plurality of individual, preferably whitened, brightened, and/or opacified, fibers associated with one another. The web includes a plurality of surface energy gradients defined by the boundaries of discontinuous, spaced regions of the web which are located on the first surface which exhibit a different surface energy than an adjacent portion of the web. The regions comprise depositions of a preferably whitened, brightened, and/or opacified low surface energy material randomly distributed over the first surface. In a preferred embodiment, the nonwoven web is formed of shaped fibers of substantially non-circular cross-section, preferably a trilobial or delta cross-section, which include whitening, brightening, and opacifying agents within the fiber material.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: February 15, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Maria Teresa Octavio, James William Cree, Luis Eduardo Ravaglia, Dennis Albert Thomas
  • Patent number: 6015608
    Abstract: A liquid absorbent pad has incorporated therein a plurality of liquid-absorbent laminated segments. The segments include super-absorbent particles. The segments are separated from one another and liquid dams between them prevent water-swollen particles from migrating throughout the pad. The dams may be formed by welding, adhesives, or by other means.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: January 18, 2000
    Assignee: Koslow Technologies Corporation
    Inventor: Evan E. Koslow
  • Patent number: 5962106
    Abstract: The present invention refers to an absorbent product, especially a sanitary napkin (1), including an absorbent body (2) characterised by having a first portion (5) of perforated plastic film (6) and, on the surface (13) adapted to come into contact with the user's body, a longitudinal layer which includes a second central portion (7) of woven or non-woven material on the body contact surface (13), the first portion (5) being at least near the side edges (11) of the absorbent body (2) at the contact surface and having the thickness of the absorbent body (2)
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: October 5, 1999
    Assignee: Johnson & Johnson Ind. E. Com. Ltda
    Inventors: Antonio Carlos Ribeiro De Carvalho, Paulo Roberto Amaral Serra
  • Patent number: 5932316
    Abstract: The present invention pertains, in a preferred embodiment, to a method for forming a nonwoven web exhibiting a plurality of surface energy gradients.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: August 3, 1999
    Assignee: The Procter & Gamble Company
    Inventors: James W. Cree, Luis E. Ravaglia
  • Patent number: 5891118
    Abstract: A substantially elongated absorbent article having a liquid permeable topsheet, a liquid impermeable backsheet, an absorbent member interposed between the topsheet and the backsheet, and a pair of hydrophobic areas along opposing longitudinal side portions of an upper surface of the absorbent article inwardly from longitudinal side edges of the absorbent article, the hydrophobic areas each having a continuous or discontinuous antileakage groove formed along a respective one of the longitudinal side portions, wherein a width of each of the antileakage grooves is from 0.1 mm to 20 mm, a ratio of a depth of each of the antileakage grooves with respect to a thickness of a portion of the absorbent article where no antileakage groove is formed is from 0.01 to 0.8, and the depth of each of the antileakage grooves is from 0.1 mm to 12 mm.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: April 6, 1999
    Assignee: Kao Corporation
    Inventors: Yasuo Toyoshima, Tetsuya Kusagawa, Mitsugu Hamajima, Minoru Nakanishi, Yuji Yana, Akihiko Saka
  • Patent number: 5855719
    Abstract: An absorbent article is provided for use in the perineal area of the body having an absorbent core having an upper body facing surface, a lower garment facing surface, first and second longitudinal sides, and first and second transverse ends. A body fluid impervious sealing wrapper, having upper and lower portions each having longitudinally and transversely extending edges along which said portions are joined, is formed around the absorbent core so as to enclose at least the entirety of the garment facing surface, the longitudinal sides and the transverse ends, thereby forming a seal. A centrally disposed opening is formed in the upper portion of the sealing wrapper thereby forming a window on the body facing surface of the absorbent core that exposes it to fluid flow. A fluid pervious layer covers at least the portion of the body facing surface on which the window is formed. The upper portion of the sealing wrapper and the pervious layer are joined so as to form a laminated layer.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: January 5, 1999
    Assignee: McNeil-PPC, Inc.
    Inventor: Michael Joseph Menard
  • Patent number: 5840780
    Abstract: A foamed isocyanate-based polymer having a cellular structure and comprising a non-surface cross-linked superabsorbent polymer, the foamed polymer being capable of: (i) absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 10 times its weight of absorbed aqueous NaCl solution which is bound to the superabsorbent polymer. A process for producing the foamed isocyanate-based polymer is also described. The process comprises the steps of: contacting an isocyanate, an active hydrogen-containing compound, an aqueous blowing agent, a catalyst and a non-surface cross-linked superabsorbent polymer, the superabsorbent polymer being capable of absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature in the range of from about 20.degree. to about 25.degree. C.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: November 24, 1998
    Assignee: Woodbridge Foam Corporation
    Inventor: Robert N. Wilson
  • Patent number: 5746729
    Abstract: A sanitary napkin includes a top layer having an upper layer made of a perforated thermoplastic synthetic resinous film and a lower layer made of thermoplastic synthetic fibers having a hydrophilic property higher than that of the upper layer. These upper and lower layers are intermittently heat sealed together except at a central zone of the napkin by thermally debossing the upper and lower layers so that the central zone may be thicker and softer than the remaining zone.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: May 5, 1998
    Assignee: Uni-Charm Corporation
    Inventors: Ichiro Wada, Hideki Kondo, Masataka Kinoshita
  • Patent number: 5743776
    Abstract: To prevent body fluids from flowing backward through a liquid-permeable topsheet for use in body fluids absorptive goods, the topsheet is formed by a nonwoven fabric made of thermoplastic synthetic fibers appropriately fused together and the topsheet is provided with openings and a skin-contacting region continuously extending around the openings. A first zone of the topsheet has a water-resistance at least in the skin-contacting region which is higher than a water-resistance in a second zone extending outside the first zone so as to suppress a back flow of body fluids possibly occurring in the skin-contacting region.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: April 28, 1998
    Assignee: Uni-Charm Corporation
    Inventors: Takamitsu Igaue, Hisashi Takai, Tsutomu Kido
  • Patent number: 5713881
    Abstract: A non-continuous absorbent composite having a plurality of interconnected strands separated by voids. The strands comprises a porous, absorbent macrostructure and a substrate. The porous macrostructure has interconnected absorbent gelling particles that are surface crosslinked with cationic, preferably polymeric, amino-epichlorohydrin adducts. Upon contacting liquids such as water or body exudates (e.g., urine), the absorbent composite can absorb the liquids without undesirable planer expansion, The composite is useful in absorbent articles such as diapers, adult incontinence pads, and sanitary napkins are disclosed.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: February 3, 1998
    Inventors: Ebrahim Rezai, Michael S. Kolodesh, Yung-Wei Tai, Kesyin Hsueh, Albert C. Dierckes, Jr., Kyoko Naga
  • Patent number: 5693037
    Abstract: The present invention provides an absorbent article having a topsheet treated with a silicone-based surfactant to impart hydrophilicity. The absorbent article preferably includes a first, apertured, macroscopically expanded, three-dimensional, polymeric topsheet and preferably includes a second, apertured, macroscopically expanded, three-dimensional polymeric topsheet underlying the first topsheet. The multiple topsheets provide improved masking of bodily fluids absorbed and retained by the absorbent core. The first and second topsheets preferably include surfactants which impart hydrophilicity to differing degrees, and which preferably are selected from diverse surfactant categories. The use of a silicone-based surfactant imparts improved tactile qualities to the wearer-contacting surface of the first topsheet in comparison with non-silicone-based surfactants.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: December 2, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Yann-Per Lee, Susan Nicole Lloyd
  • Patent number: 5658639
    Abstract: The present invention pertains, in a preferred embodiment, to a method for selectively aperturing a nonwoven web exhibiting a plurality of surface energy gradients.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: August 19, 1997
    Assignee: The Proctor & Gamble Company
    Inventors: John J. Curro, Douglas H. Benson, James W. Cree, Luis E. Ravaglia