Containing Hydrosoluble, Hydrodegradable Or Body Heat Soluble Material Patents (Class 604/364)
  • Patent number: 6296914
    Abstract: The present invention is directed to a flushable water-sensitive film, which maintains its integrity and strength when in use, but disperses when place in contact with water, such as in a conventional sink or toilet. Moreover, the present invention is directed to a flushable release liner, which performs like conventional release papers, but adds the convenience of disposal by flushing in a sink or toilet. The present invention is also directed to products, which contain a flushable water-sensitive film or release liner.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: October 2, 2001
    Assignee: Kimberly-Clark Corporation
    Inventors: John E. Kerins, Yihua Chang, William S. Pomplun
  • Publication number: 20010025162
    Abstract: An article containing a liquid pervious topsheet coated with a lotion composition is disclosed. The lotion composition provides a skin benefit and/or reduces the adherence of BM to the skin of the wearer, thereby improving the ease of BM clean up. The lotion composition applied to the article in a nonuniform manner, preferably such there are regions on the article's topsheet that are not coated with lotion.
    Type: Application
    Filed: March 22, 2001
    Publication date: September 27, 2001
    Inventors: Donald Carroll Roe, Laura Graves Spalding Van Rijswijck, Julie Charlene Rule
  • Patent number: 6294238
    Abstract: The present invention is directed to a flushable release liner. The flushable release liner is formed by applying a release coating onto at least one surface of a water-sensitive film. The flushable release liner maintains its integrity and strength when in use, but disperses when placed in contact with water, such as in a conventional sink or toilet. Moreover, the present invention is directed to water-dispersible products, including flushable products, which contain the flushable release liner.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: September 25, 2001
    Assignee: Kimberly-Clark Corporation
    Inventors: William S. Pomplun, Yihua Chang, John E. Kerins
  • Patent number: 6290979
    Abstract: Web materials which have two or more skin care compositions disposed thereon. The skin care compositions are transferable to the wearer's skin by normal contact and/or wearer motion and/or body heat. The skin care compositions disclosed in the present invention are selected to maintain and/or improve the skin health of the wearer upon transfer during use, for example, to provide a skin protective barrier or a therapeutic benefit; to minimize the abrasion between the cuffs and skin in the area where the cuffs contact the wearer's skin, resulting in less skin irritation; to improve BM clean up on the skin, or to improve the barrier properties of the cuffs. Web materials of the present invention have a wide range of potential uses in both durable and disposable articles, but are particularly well suited for use in disposable absorbent articles such as disposable diapers, incontinent briefs, training pants, sanitary napkins, and the like.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: September 18, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Donald Carroll Roe, Gretchen Louise Elder, Thomas Edward Schulte, Laura Graves Spalding VanRijswijck, Steven Worthington Miller
  • Publication number: 20010021833
    Abstract: An absorbent article which includes a phase change material capable of adding or removing heat to or from at least a portion of the absorbent article to perform a useful function on the article. The phase change material may be activated by an action of the wearer or caregiver or by environmental conditions between the article and wearer.
    Type: Application
    Filed: February 7, 2001
    Publication date: September 13, 2001
    Inventors: Mattias Schmidt, Mark James Kline, Bruno Johannes Ehrnsperger, Cornelia Sprengard-Eichel, Bruce Ernest Tepper
  • Publication number: 20010018578
    Abstract: Provided is a water-decomposable absorbent article including an absorbent body that has a water-decomposable top sheet, a water-decomposable back sheet, a water-decomposable adsorbent core sandwiched between the top sheet and the back sheet, and an adhesive layer provided on the back sheet to fit the absorbent article to an external support; and a water-decomposable release sheet for protecting the adhesive layer before use with covering the adhesive layer. The release sheet includes a release layer that faces the adhesive layer, a water-decomposable fibrous layer, and a water-soluble polymer layer sandwiched between the release layer and the fibrous layer. A basis weight of the release layer is at least 0.05 g/m2 but smaller than 0.3 g/m2, and an equilibrium contact angle between a surface of the release layer and a water drop thereon is at least 100 degrees.
    Type: Application
    Filed: January 16, 2001
    Publication date: August 30, 2001
    Applicant: UNI-CHARM CORPORATION
    Inventors: Shigeo Imai, Sachiyo Suzuki
  • Publication number: 20010014795
    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: Application
    Filed: December 21, 2000
    Publication date: August 16, 2001
    Applicant: UNI-CHARM CORPORATION
    Inventors: Nobuhiro Kurata, Mitsuhiro Wada, Megumi Tokumoto
  • Publication number: 20010014797
    Abstract: An absorbent incontinence pad is provided with a liquid impervious air permeable back sheet and an absorbent unit partly covered by the back sheet, wherein the absorbent unit has a non-woven fabric substrate, an absorbent zone formed by a plurality of highly absorbent layers extending in the form of bands on the surface of the non-woven fabric substrate and an air permeable zone where no such highly absorbent layer exists, which has sufficiently adequate properties to meet incontinence requirements and provides a comfortable feeling during use.
    Type: Application
    Filed: January 12, 2001
    Publication date: August 16, 2001
    Inventors: Migaku Suzuki, Kenichi Uchimoto, Kenji Nakaoka
  • Publication number: 20010009991
    Abstract: Provided is an absorbent article including a main body having a liquid-pervious top sheet, a back sheet and an absorbent core sandwiched between the top sheet an the back sheet; a layer containing a skin-protective ingredient; and a support layer for covering the ingredient-containing layer. The ingredient-containing layer and the support layer are provided on the surface of the main body to be in contact with the skin of a wearer. The solubility in water of the support layer is promoted at 25° C. or higher, and/or the moisture absorbability or the solubility in water of the support layer is promoted at a relative humidity of at least 30%.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 26, 2001
    Applicant: UNI-CHARM CORPORATION
    Inventor: Takayuki Hisanaka
  • Publication number: 20010008964
    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. The absorbent article includes an outer peripheral region being formed in a predetermined width spaced from a peripheral edge of the absorbent article, and an inner region located inside the outer peripheral region. The absorbent layer and the back layer, and/or the absorbent layer and the surface layer are bonded to each other with a water-soluble or water-swellable adhesive therebetween in the inner region, and the interlayer bonding strength of the layers bonded with the adhesive in the inner region is higher than the interlayer bonding strength of the layers in the outer peripheral region, both in wet and in dry.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 19, 2001
    Applicant: UNI-CHARM CORPORATION
    Inventors: Nobuhiro Kurata, Mitsuhiro Wada, Yuka Miyazaki
  • Patent number: 6254584
    Abstract: An interlabial absorbent structure is disclosed. The interlabial absorbent structure comprises a pair of absorbent panels that are sufficiently flexible such that the panels can, at least partially, conform to the walls of a wearer's interlabial space. The panels are joined by an isthmus which is positioned farthest into a wearer's interlabial space when the interlabial absorbent product is worn. Alternative embodiments of the isthmus are also described which direct bodily fluids that are deposited thereon along the longitudinal length of the interlabial absorbent structure.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: July 3, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Thomas Ward Osborn, III, Katherine Louise Mayer, Letha Margory Hines, Edward J. Milbrada
  • Publication number: 20010003797
    Abstract: A degradable disposable diaper includes one or more sheets made of polyolefin with the polyolefin including a prodegradant causing the sheet to degrade. The prodegradant includes a metal compound such as a metal selected from the group consisting of cobalt, cerium, and iron. The preferred metal compound is a metal carboxylate. The polyolefin is preferably polyethylene or polypropylene. A secondary polyolefin may be used to aid the incorporation of the prodegradant into the primary polyolefin. A filler may also be used with the polyolefin and prodegradant. The filler preferably has a particle size less than 150 mesh and is free of water. The filler is preferably calcium carbonate having a 1 to 10 micron particle size. The sheet contains between about 0.001 and about 15 weight % prodegradant and most preferably between about 0.01 and about 3 weight % prodegradant. The sheet also includes up to about 15 weight % filler. The diaper also includes a degradable absorbent core.
    Type: Application
    Filed: December 5, 2000
    Publication date: June 14, 2001
    Inventors: Cesar Montemayor Guevara, Oscar J. Kat, Carlos E. Richer, Brian E. Cermak, Joseph G. Gho, David M. Wiles
  • Patent number: 6231555
    Abstract: Absorbent articles such as sanitary napkins, panty liners, adult incontinence devices, and the like, that have components that are bonded for improved integrity and an unbonded window on their body-facing side for improved acquisition are disclosed. The absorbent articles comprise a topsheet that is fused to an underlying liquid pervious or absorbent layer at a plurality of individual bonded areas. The absorbent articles have an unbonded window that is substantially free of bonded areas, which is surrounded by region of the absorbent article that contain bonded areas.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: May 15, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Kathy Suzanne Lynard, Anne Holland Bruce, Pamela Jean Brown, Stephanie Craig, Tana Marie Kirkbride
  • Patent number: 6166285
    Abstract: An absorbent article, such as a diaper, containing cuffs with a skin care composition disposed thereon. The skin care composition disposed on the cuffs is transferable to the wearer's skin by normal contact and/or wearer motion and/or body heat. The skin care compositions disclosed in the present invention are selected to maintain and/or improve the skin health of the wearer upon transfer during use, for example, to provide a skin protective barrier or a therapeutic benefit; to minimize the abrasion between the cuffs and skin in the area where the cuffs contact the wearer's skin, resulting in less skin irritation; to improve BM clean up on the skin, or to improve the barrier properties of the cuffs.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: December 26, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Thomas Edward Schulte, Laura Graves Spalding VanRijswijck, Donald Carroll Roe
  • Patent number: 6156024
    Abstract: An absorbent article, such as a diaper, containing leg cuffs coated with a lotion composition is disclosed. The lotions disclosed in the present invention minimize the abrasion between the cuffs and skin in the area where the cuffs contact the wearer's skin, resulting in less skin irritation. The lotion compositions also reduce the adherence of BM to the skin of the wearer, thereby improving the ease of BM clean up. The lotion composition comprises a plastic or fluid emollient such as mineral oil or petrolatum, an immobilizing agent such as a fatty alcohol or paraffin wax to immobilize the emollient on the surface of the diaper leg cuffs, and optionally a hydrophilic surfactant to improve the processability and/or stability of the lotion compositions. Because the emollient is substantially immobilized on the surface of the leg cuff, less lotion is required to impart the desired therapeutic or protective lotion coating benefits.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: December 5, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Thomas Edward Schulte, Laura Graves Spalding VanRijswijck
  • 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: 6153700
    Abstract: The invention provides a water-degradable polyolefin-containing film having greater than about 55 weight percent of a polyolefin and less than about 45 weight percent of poly(ethylene oxide) of weight average molecular weight of less than about 100,000. Preferably, the polyolefin is low density polyethylene. The polyolefin-containing film, when immersed in water for about 30 seconds, loses at least 10% in two or more of the tensile properties: percent strain-to-break, peak stress, energy-to-break and modulus when compared to the dry or pre-immersion values.Also provided are flushable personal care articles such as infant diapers, feminine hygiene napkins, and adult incontinence garments having a backing or barrier layer comprising a water degradable polyolefin-containing film of the invention.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: November 28, 2000
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Hongxue Wang, David Michael Schertz
  • Patent number: 6147028
    Abstract: The present invention relates to microporous starch granules surface coated with a hydrophobic agent said granules useful in absorbing hydrophobic malodorous materials either from the liquid or gas phase. The hydrophobic granules are useful in controlling the malodors associated with catmenials and hygienic undergarments as well as being useful for absorbing unwanted food and other environmental malodors.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: November 14, 2000
    Assignee: The Procter & Gamble Company
    Inventor: George Peter Rizzi
  • Patent number: 6127593
    Abstract: The present invention relates to a flushable fibrous structure that is particularly useful as a disposable tissue product and as a component (e.g., topsheets) for absorbent articles such as catamenial pads, diapers, incontinent articles and the like. The invention specifically relates to a flushable fibrous structure that has an in-use wet tensile strength of at least about 100 g/in. and a disposal wet tensile strength of not more than about 30 g/in. The invention also relates to absorbent articles comprising the fibrous structures, and methods for making the structures.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: October 3, 2000
    Assignee: The Procter & Gamble Company
    Inventors: David William Bjorkquist, Todd Leon Mansfield
  • Patent number: 6120783
    Abstract: Web materials which have two or more skin care compositions disposed thereon. The skin care compositions are transferable to the wearer's skin by normal contact and/or wearer motion and/or body heat. The skin care compositions disclosed in the present invention are selected to maintain and/or improve the skin health of the wearer upon transfer during use, for example, to provide a skin protective barrier or a therapeutic benefit; to minimize the abrasion between the cuffs and skin in the area where the cuffs contact the wearer's skin, resulting in less skin irritation; to improve BM clean up on the skin, or to improve the barrier properties of the cuffs. Web materials of the present invention have a wide range of potential uses in both durable and disposable articles, but are particularly well suited for use in disposable absorbent articles such as disposable diapers, incontinent briefs, training pants, sanitary napkins, and the like.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: September 19, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Donald Carroll Roe, Gretchen Louise Elder, Thomas Edward Schulte, Laura Graves Spalding Van Rijswijck, Steven Worthington Miller
  • Patent number: 6120488
    Abstract: An absorbent article, such as a diaper, containing cuffs and a topsheet with one or more skin care compositions disposed thereon. The skin care compositions are transferable to the wearer's skin by normal contact and/or wearer motion and/or body heat. The skin care compositions disclosed in the present invention are selected to maintain and/or improve the skin health of the wearer upon transfer during use, for example, to provide a skin protective barrier or a therapeutic benefit; to minimize the abrasion between the cuffs and skin in the area where the cuffs contact the wearer's skin, resulting in less skin irritation; to improve BM clean up on the skin, or to improve the barrier properties of the cuffs.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: September 19, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Laura Graves Spalding VanRijswijck, Gretchen Louise Elder, Donald Carroll Roe
  • Patent number: 6107537
    Abstract: The present invention relates to absorbent articles which provide improved protection against skin overhydration. A particularly preferred embodiment of an absorbent article of the present invention comprises a body contacting surface having a skin care composition thereon that, when at least a portion of the composition is transferred to a wearer's skin by normal body motion or body heat, the material is effective in providing a skin condition benefit and a liquid impermeable, breathable backsheet having a mass vapor transmission rate value (MVTR) of at least about 1300 g/m.sup.2 /24 hr and an absorbent core having a post acquisition collagen rewet method value (PACORM) with a PACORM:MVTR ratio is less than 0.05 mg/(g/m.sup.2 /24 hr).
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: August 22, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Gretchen Louise Elder, Donald Carroll Roe, Laura Graves Van Rijswijck, Mathias Kurt Herrlein, Manfred Plischke, Julie Charlene Rule, George Christopher Dobrin, Edward John Milbrada
  • Patent number: 6087550
    Abstract: This invention relates to water responsive thermoplastic compositions and articles constructed thereof. This invention particularly relates to thermoplastic copolyester compositions useful for the manufacture of disposable articles such as disposable diapers and feminine napkins. More particularly, this invention relates to thermoplastic copolyester compositions that are useful as a raw material in the manufacture of nonwovens, barrier films or coatings and as well as for various improved hot melt adhesives compositions useful for incorporating hydrophilic features into disposable articles.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: July 11, 2000
    Assignee: H. B. Fuller Licensing & Financing, Inc.
    Inventors: Carolyn Anderson-Fischer, Mai Nguyen, Mark S. Hull, Mark G. Katsaros, Mark S. Kroll, Greg J. VanLith
  • Patent number: 6063067
    Abstract: A disposable diaper has a pair of first surface fastener members supported by a rear flap of a diaper body and a second surface fastener member supported by a front flap of the diaper body. The first and second surface fastener members have first and second engaging elements; the first and/or second engaging elements are made of water-soluble resin. After approximately 1/3 to 2/5 of the diaper body on the side of the rear flap is folded inwardly, the diaper body is wound into a roll toward the front flap, and then the water-soluble resin of the first and/or second engaging elements is dissolved with water. Then the first surface fastener members are pressed against the second surface fastener member to fasten the diaper body in roll as waste.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: May 16, 2000
    Assignee: YKK Corporation
    Inventors: Toshiaki Takizawa, Masashi Doi, Tsuyoshi Minato
  • Patent number: 6018093
    Abstract: An absorbent article adapted to receive feces having a first waist region, a second waist region opposed to the first waist region and the second waist region. The absorbent article includes a liquid pervious topsheet, a liquid impervious backsheet joined to at least a portion of the topsheet, an absorbent core disposed between at least a portion of the topsheet and the backsheet and an effective amount of a calcium-bases feces modifying agent disposed in the article such that the feces modifying agent is available to contact at least a portion of the feces.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: January 25, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Donald C. Roe, Nicholas A. Ahr, Konstantin N. Gavrilenko, Dmitry N. Logatchev, Sergey Y. Pavlov, Lev G. Burov, Aleksandra P. Novozhilova
  • Patent number: 5985396
    Abstract: The present invention is directed to a flushable water-sensitive film, which maintains its integrity and strength when in use, but disperses when place in contact with water, such as in a conventional sink or toilet. Moreover, the present invention is directed to a flushable release liner, which performs like conventional release papers, but adds the convenience of disposal by flushing in a sink or toilet. The present invention is also directed to products, which contain a flushable water-sensitive film or release liner.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: November 16, 1999
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: John E. Kerins, Yihua Chang, William S. Pomplun
  • Patent number: 5981012
    Abstract: The present invention is directed to a flushable release liner. The flushable release liner is formed by applying a release coating onto at least one surface of a water-sensitive film. The flushable release liner maintains its integrity and strength when in use, but disperses when placed in contact with water, such as in a conventional sink or toilet. Moreover, the present invention is directed to water-dispersible products, including flushable products, which contain the flushable release liner.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: November 9, 1999
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: William S. Pomplun, Yihua Chang, John E. Kerins
  • Patent number: 5968025
    Abstract: An absorbent article containing a liquid pervious topsheet coated with a lotion composition is disclosed. The lotion composition comprises a plastic or fluid emollient such as mineral oil or petrolatum, an immobilizing agent such as a fatty alcohol or paraffin wax to immobilize the emollient on the surface of the topsheet, and optionally a hydrophilic surfactant to improve wettability of the coated topsheet. Because the emollient is substantially immobilized on the surface of the topsheet, less lotion is required to impart the desired therapeutic or protective lotion coating benefits.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: October 19, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Donald Carroll Roe, Frank Heinrich Bakes, Alrick Vincent Warner
  • Patent number: 5944705
    Abstract: An absorbent article, such as a disposable diaper, disposable training pants, feminine hygiene products or an incontinent adult article, containing aloe vera on at least the surface of the article contacting the wearer's skin to reduce rash and methods of making same.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: August 31, 1999
    Assignee: Drypers Corporation
    Inventors: Paul M. Ducker, Richard S. Dietel, Gary Nicklett
  • Patent number: 5925439
    Abstract: A liquid-absorbent sanitary cellulose product, in particular a diaper, sanitary napkin or the like, comprises a liquid-proof back layer (2) and an absorbent body (3). A storage layer (5) is arranged between the absorbent body (3) and the back layer (2), this storage layer (5) consisting of a layer of non-woven material (6) profiled in the direction of thickness (D) of the product by chamber-like impressions (7) being formed, into each of which are inserted super-absorbent hydrogel particles (8).
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: July 20, 1999
    Assignee: The Procter & Gamble Company
    Inventor: Klaus Karl Ferdinand Haubach
  • Patent number: 5885264
    Abstract: A disposable training pant 1 includes a liquid-permeable topsheet, a liquid-impermeable backsheet and an absorbent core disposed therebetween. The liquid-permeable tophseet includes an upper layer sheet and a lower layer sheet. The upper layer sheet is formed with a wetness telling area and the lower layer sheet intermittently bonded to the absorbent core 13 and containing fibrous material adapted to shrink by 10% or more longitudinally of the training pant as it is wetted and intermittently bonded to the absorbent core and thereby intensify a feeling of wetness given to the infant.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: March 23, 1999
    Assignee: Uni-Charm Corporation
    Inventor: Michiyo Matsushita
  • Patent number: 5830201
    Abstract: A flushable diaper for use on the body of an infant or adult. An envelope has inner and outer walls which are secured together at their outer periphery to form an inner cavity. The outer wall is comprised of a hydrophobic outer layer together with a hydrophilic inner layer. The inner wall is comprised of a hydrophobic outer layer together with a hydrophilic inner layer. The inner and outer walls are separated by an interior cavity which contains one or more containers. The container is comprised of either a single layer or a laminated wall which forms a chamber that encloses a charge of water. The laminated wall is comprised a hydrophobic inner laminate and a hydrophilic outer laminate. When manually ruptured, the containers release water into the double walled envelope, which causes disintegration of the hydrophilic inner layers of the double walls, along with the hydrophobic outer layers.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: November 3, 1998
    Assignee: Frederick W. George
    Inventors: Frederick W. George, Virginia C. George, deceased
  • Patent number: 5750585
    Abstract: A water swellable foam matrix formed as a macroporous solid comprising a foam stabilizing agent and a polymer or copolymer of a free radical polymerizable hydrophilic olefin monomer crosslinked with about 0.1 to about 10% by weight of a multiolefin-functional crosslinking agent is described. The foam matrix is characterized by rapid swelling and high water swelling ratios.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: May 12, 1998
    Assignee: Purdue Research Foundation
    Inventors: Kinam Park, Haesun Park
  • Patent number: 5722966
    Abstract: A flushable and dispersible absorbent article is described. The absorbent article comprises a liquid pervious topsheet which preferably comprises a wet laid, apertured fibrous web having a temporary wet strength resin incorporated therein, the topsheet also having a body surface provided with a plurality of fibrils, the fibrils comprising a water resistant resinous material, a backsheet impervious to bodily fluids which preferably comprises a wet laid fibrous assembly having a temporary wet strength resin incorporated therein, the body surface of the backsheet being coated with a water resistant resinous material, an absorbent core positioned between the topsheet and the backsheet, and means for removably attaching the sanitary napkin to a wearer's undergarment. The topsheet and the backsheet are joined, at least about their periphery, using a water soluble adhesive. Alternative embodiments of the present invention can also comprise laterally extending flaps.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: March 3, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Patricia Lee Christon, Nicholas Albert Ahr
  • Patent number: 5700476
    Abstract: The invention provides wound dressing and/or implant materials comprising a matrix structure of sponge, at least one substructure and at least one pharmacologically active agent, wherein both the matrix structure and the substructure are formed from bioabsorbable biopolymer materials. The substructure may, for example, comprise biopolymer films, flakes, fibres or microspheres embedded in the matrix structure of sponge. The pharmacologically active agent may comprise antiseptics, antibiotics, analgesics. One or more such active agents may be incorporated separately into the matrix and/or the substructure so as to achieve controlled or phasic release of the active agents into the wound.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: December 23, 1997
    Assignee: Johnson & Johnson Medical, Inc.
    Inventors: Arthur L. Rosenthal, Nicholas D. Light, Carla A. Haynes
  • Patent number: 5700553
    Abstract: The present invention is directed toward a multilayer film which includes a first surface layer and a second surface layer. The first surface layer is composed of materials which disintegrate when subjected to conditions present in conventional sewage systems. The second surface layer is formed from a material which is essentially inert to water, urine and other bodily fluids. Typically, the second surface layer is an extremely thin coating which provides a waterproofing effect. The multilayer film may be utilized as an outer cover in a wide variety of products such as, for example, disposable diapers and feminine care products such as sanitary napkins.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: December 23, 1997
    Assignee: Kimberly-Clark Corporation
    Inventors: Bernard Cohen, Lee Kirby Jameson, Lamar Heath Gipson, Judith Katherine Faass
  • Patent number: 5700477
    Abstract: Heteromorphic sponges are described which have matrix structures with oriented substructures added to facilitate cellular invasion. A sponge may be used as a wound implant by cutting it to the shape of a wound bed and placing therein. The matrix structure provides conduits which assist invasion of the sponge by cells which degrade the sponge and lay down new tissue to replace it. The incorporation of active agents in the matrix and/or substructures enhances wound healing.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: December 23, 1997
    Assignee: Johnson & Johnson Medical, Inc.
    Inventors: Arthur L. Rosenthal, Nicholas D. Light, Paul W. Watt
  • Patent number: 5681299
    Abstract: A disposable article, e.g a diaper, having a backing layer (5) formed of soluble material constructed so that when in contact with a relatively large volume of liquid, e.g. that produced by flushing a lavatory, the backing layer (5) dissolves and loses its integrity but when in contact with a relatively small volume of liquid, e.g. when handled with wet hands, dissolution is restricted so that the backing layer (5) maintains its integrity. The backing layer may have variable solubility across its thickness, e.g. one side of the backing layer may comprise a relatively soluble material (4), whereas the other side comprises a less soluble material (6). Alternatively, the backing layer may comprise a soluble membrane (5) having a discontinuous layer (14, 16) of relatively insoluble material applied to at least one surface thereof.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: October 28, 1997
    Assignee: Ecoprogress Limited
    Inventor: Malcolm David Brown
  • Patent number: 5643588
    Abstract: A diaper containing a liquid pervious topsheet coated with a lotion composition is disclosed. The lotion composition reduces the adherence of BM to the skin of the wearer, thereby improving the ease of BM clean up. The lotion composition comprises a plastic or fluid emollient such as mineral oil or petrolatum, an immobilizing agent such as a fatty alcohol or paraffin wax to immobilize the emollient on the surface of the diaper topsheet, and optionally a hydrophilic surfactant to improve wettability of the coated topsheet. Because the emollient is substantially immobilized on the surface of the topsheet, less lotion is required to impart the desired therapeutic or protective lotion coating benefits.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: July 1, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Donald Carroll Roe, Frank Heinrich Bakes, Alrick Vincent Warner
  • Patent number: 5635191
    Abstract: A diaper containing a liquid pervious topsheet coated with a lotion composition is disclosed. The lotion composition reduces the adherence of BM to the skin of the wearer, thereby improving the ease of BM clean up. The lotion composition comprises a plastic or fluid polysiloxane emollient such as phenyl-functional polymethylsiloxanes, an immobilizing agent such as a fatty alcohol or paraffin wax to immobilize the emollient on the surface of the diaper topsheet, and optionally a hydrophilic surfactant to improve wettability of the coated topsheet. Because the polysiloxane emollient is substantially immobilized on the surface of the topsheet, less lotion is required to impart the desired therapeutic or protective lotion coating benefits.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: June 3, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Donald C. Roe, Larry N. Mackey
  • Patent number: 5613959
    Abstract: A disposable article, such as a diaper, for absorbing and containing urine and other body exudates has an absorbent insert pad that may be flushed in a toilet. The article preferably includes a backing sheet and a bodyside liner that are substantially coterminous. In one embodiment of the invention, a secondary absorbent body, which is disposed between the backing sheet and the bodyside liner, has a pocket formed therein. The absorbent insert pad is positioned against the bodyside liner and located generally within the pocket. A cover is releasably attached to the bodyside liner to maintain the insert pad within the pocket.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: March 25, 1997
    Assignee: Kimberly-Clark Corporation
    Inventors: Thomas H. Roessler, Annamaria Cesco-Cancian, Dan D. Endres, Paula M. Hanson, Kenneth A. Leick, Marianne K. Leick, Edward E. Werner
  • Patent number: 5607760
    Abstract: A diaper containing a liquid pervious topsheet coated with a lotion composition is disclosed. The lotion composition reduces the adherence of BM to the skin of the wearer, thereby improving the ease of BM clean up, and improves skin softness. The lotion composition comprises a solid polyol polyester and an emollient to improve the lubricity of the solid polyol polyester. The polyol polyester(s) and emollient remains at or near the skin surface, providing the desired BM cleaning or therapeutic benefits.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: March 4, 1997
    Assignee: The Procter & Gamble Company
    Inventor: Donald C. Roe
  • Patent number: 5527303
    Abstract: The present invention provides a disposable absorbent article such as an incontinent pad that is both comfortable and suitable for absorbing and containing large volumes of bodily liquids without leakage. Such an absorbent article includes a liquid pervious topsheet, a liquid impervious backsheet joined to the topsheet, and an absorbent core positioned between the topsheet and the backsheet. The absorbent core includes a material which expands when wetted. The backsheet includes at least one pleat which is tacked with a liquid soluble adhesive such that when the liquid soluble adhesive is wetted the adhesive dissolves allowing the pleat to expand as the absorbent core expands. The pleats may extend in any direction, but preferably extend either substantially parallel to the longitudinal axis of the article or substantially parallel to the transverse axis of the absorbent article.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: June 18, 1996
    Assignee: The Procter & Gamble Company
    Inventors: John T. Milby, Jr., David M. Sageser
  • Patent number: 5509913
    Abstract: The present invention encompasses flushable compositions and flushable products, such as flushable personal hygiene articles, flushable medical, hospital and surgical supplies, and flushable household wipes and packaging material that have sufficient wet tensile strength for their intended use, particularly prolonged or extended use, in the presence of body waste fluids, but which disintegrate and disperse in the presence of ordinary tap water so as to be flushable in a conventional toilet and disposable in municipal or private sewage systems without obstructing or clogging the toilet or sewage system.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: April 23, 1996
    Assignee: Kimberly-Clark Corporation
    Inventor: Richard S. Yeo
  • Patent number: 5506041
    Abstract: A nonwoven fabric having biodegradability which can be advantageously used as a biodegradable material for general disposable-type household supplies represented by such items as sanitary materials, wiping cloths, and packaging materials. The nonwoven fabric is formed of a fiber material made of poly-.epsilon.-caprolactone and/or poly-.beta.-propiolactone. The nonwoven fabric contains not less than 20% by weight of such a fiber material having a filament fineness of 0.8 to 6 denier. This provides sufficient tensile strength and soft hand which enable the nonwoven fabric to be advantageously used in practical applications. Where the nonwoven fabric is formed of a superfine fiber of the above noted type having a filament fineness of less than 0.8 denier, it has particularly remarkable soft hand.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: April 9, 1996
    Assignees: Unitika Ltd., Nippon Unicar Company Limited
    Inventors: Hiroshi Tanaka, Yoshiki Miyahara, Satoshi Kasetani, Kouji Esaki, Shigetaka Nishimura, Takashi Inoue
  • Patent number: 5476457
    Abstract: A disposable article, such as a diaper, for absorbing and containing urine and other body exudates has an absorbent insert pad that may be flushed in a toilet. The article preferably includes a backing sheet and a bodyside liner that are substantially coterminous. In one embodiment of the invention, a secondary absorbent body, which is disposed between the backing sheet and the bodyside liner, has a pocket formed therein. The absorbent insert pad is positioned against the bodyside liner and located generally within the pocket. A cover is releasably attached to the bodyside liner to maintain the insert pad within the pocket.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: December 19, 1995
    Assignee: Kimberly-Clark Corporation
    Inventors: Thomas H. Roessler, Annamaria Cesco-Cancian, Dan D. Endres, Paula M. Hanson, Kenneth A. Leick, Marianne K. Leick, Edward E. Werner
  • Patent number: 5472518
    Abstract: Method of disposing aqueous-alkali disposable articles is disclosed. The articles are made from films or non-woven webs or composites of films and webs where the film or non-woven web comprises a hydrolytically degradable polymer and preferably also comprises a water soluble polymer. Multilayer microfibers of at least one layer of a hydrolytically degradable polymer and at least one layer of a water soluble polymer are particularly disclosed. The articles have water resistance during preparation, storage, and use with mammals but are dispersible when submersed in water at conditions of elevated temperature, elevated pH, and during a single commercial laundry cycle. The articles solve both the problem of solid waste disposal prevalent with single use garments and the problem of repeated cleansing and recycling of multiple use garments. Contamination associated with the articles of the invention after their use will be disinfected during the commercial laundry cycle that is utilized to disperse the article.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: December 5, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gregg A. Patnode, John E. Bruno, Denise R. Rutherford, Walter B. Sandison, Dietmar Schlei
  • Patent number: 5466462
    Abstract: The invention provides wound dressing and/or implant materials comprising a matrix structure of sponge, at least one substructure and at least one pharmacologically active agent, wherein both the matrix structure and the substructure are formed from bioabsorbable biopolymer materials. The substructure may, for example, comprise biopolymer films, flakes, fibres or microspheres embedded in the matrix structure of sponge. The pharmacologically active agent may comprise antiseptics, antibiotics, analgesics. One or more such active agents may be incorporated separately into the matrix and/or the substructure so as to achieve controlled or phasic release of the active agents into the wound.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: November 14, 1995
    Assignee: Johnson & Johnson Medical, Inc.
    Inventors: Arthur L. Rosenthal, Nicholas D. Light, Carla A. Haynes
  • Patent number: 5458591
    Abstract: A disposable article, such as a diaper, for absorbing and containing urine and other body exudates has an absorbent insert pad that may be flushed in a toilet. The article preferably includes a backing sheet and a bodyside liner that are substantially coterminous. In one embodiment of the invention, a secondary absorbent body, which is disposed between the backing sheet and the bodyside liner, has a pocket formed therein. The absorbent insert pad is positioned against the bodyside liner and located generally within the pocket. A cover is releasably attached to the bodyside liner to maintain the insert pad within the pocket.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: October 17, 1995
    Assignee: Kimberly-Clark Corporation
    Inventors: Thomas H. Roessler, Annamaria Cesco-Cancian, Dan D. Endres, Paula M. Hanson, Kenneth A. Leick, Marianne K. Leick, Edward E. Werner
  • Patent number: 5433219
    Abstract: A condom assembly adapted to be received by a passive sexual organ includes a condom and a biocompatible, water soluble, shape-retaining insertion element adapted to deliver the condom to a passive sexual organ, such as the vaginal cavity, prior to intercourse and without first affixing the condom to an erect penis. The assembly may include an applicator to further facilitate insertion of the insertion element housing a condom into the passive sexual organ.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: July 18, 1995
    Inventor: Nanette S. Spery