Natural Or Synthetic Rubber Patents (Class 604/373)
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Patent number: 11958279Abstract: A method of manufacturing an elastic film laminate includes stretching an elastic film in at least one direction at a first draw ratio, relaxing the elastic film, stretching the elastic film at least once more in the at least one direction at a second draw ratio less than the first draw ratio, and laminating the elastic film to at least one substrate web.Type: GrantFiled: November 21, 2017Date of Patent: April 16, 2024Assignee: FITESA FILM PRODUCTS LLCInventors: Stephen D. Bruce, Jeffrey A. Middlesworth
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Patent number: 11000427Abstract: A disposable pant-type absorbent article includes a chassis and an absorbent body. The chassis has a front portion and a back portion and each of the front and back portions has a waist edge, a pair of leg edges and a pair of side edges. The front and back portions are joined to each other at opposite side edges to at least partly define a waist-opening and a pair of leg-openings. The absorbent body is located mainly in a crotch portion of the article. An elastic leg feature is fastened to the chassis at least partly along leg edges. The elastic leg feature extends from the associated side edge towards a centre line in the longitudinal direction of the article. The disclosure also relates to a corresponding method of manufacturing a pant-type absorbent article, as well as an array of gender-specific, disposable, absorbent articles.Type: GrantFiled: September 9, 2015Date of Patent: May 11, 2021Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAGInventors: Katarina Eriksson, Lucas Bäck, Anna Klinte Olsson
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Patent number: 10918531Abstract: The present invention is intended to improve the liquid diffusibility and fit of an absorber having a first slit extending in a front-back direction and second slits continuing laterally from the first slit to the side edges. The foregoing issue is solved by providing one first slit extending in the front-back direction in a width-direction intermediate portion of an absorber, providing second slits continuing from each of front end side and back end side of the first slit toward width-direction both sides to the side edges, and providing second slit elastic members to cross in the direction of continuance of the second slits and exert a contraction force in the direction of closing of the second slits.Type: GrantFiled: September 28, 2015Date of Patent: February 16, 2021Assignee: DAIO PAPER CORPORATIONInventor: Kaori Umemoto
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Patent number: 10702425Abstract: The present invention relates to a folded side-leakage-proof arc-shaped elastic sanitary product wainscot and a production line therefor. After two sides of an elastic membrane under a tensile state are compounded with nonwoven fabric strips by hot pressing respectively, the elastic membrane rebounds and resets to impel the nonwoven fabric strips located on two sides of the elastic membrane to form a folded side-leakage-proof side wall. The elastic membrane is in the shape of a concave arc.Type: GrantFiled: April 18, 2017Date of Patent: July 7, 2020Inventor: Mingda Yang
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Patent number: 10188559Abstract: In a disposable diaper, a leg stretching unit stretchable in a longitudinal direction is disposed at an inside of a widthwise direction than a pair of leg opening units. An area between a backside leg opening unit and a straight line passing through a center in the widthwise direction and parallel to the longitudinal direction is larger than an area between a foreside leg opening unit and a straight line passing through a center of the longitudinal direction of the leg opening unit and extending in the longitudinal direction. A buttocks part stretching unit running across a crotch region and the back waistline region and stretchable in the longitudinal direction is disposed at an outside of the widthwise direction than the leg stretching unit. A front end of the buttocks part stretching unit is positioned more backward than a center of the longitudinal direction of the leg opening unit.Type: GrantFiled: November 27, 2013Date of Patent: January 29, 2019Assignee: UNICHARM CORPORATIONInventor: Satoru Sakaguchi
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Patent number: 9962286Abstract: Panty underwear includes a pouch disposed above the crotch panel and between the leg openings. The pouch has a top opening opposite the wearer's vaginal opening, so that vaginal discharge flows to a sanitary napkin between the bottom of the pouch and the crotch panel. The pouch provides cooling to the wearer's labia and, in some embodiments, to her perineal area. The cooling is provided by either a single generally rectangular cooling pack, or two cooling packs each being rectangular or J-shaped. The sanitary napkin can be internal or external to the pouch. Some embodiments of the underwear are intended for single use. Other embodiments of the underwear are intended to be re-usable, in that the sanitary napkin can be replaced and/or the cooling pack(s) can be re-used. The cooling pack(s) can be sealed with one-time or reusable thermal material therein, or they can be resealable with replaceable thermal material.Type: GrantFiled: September 21, 2015Date of Patent: May 8, 2018Inventor: Theresa R. Mahon
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Patent number: 9750559Abstract: A usage key card is adapted to be handled separate from a tissue treatment device. The usage key card has a storage medium formatted to contain an identification code, which is unique to the usage key card. The usage key card is also adapted to be read by a reader separate from the device. The storage medium is also formatted, when inserted into the reader, to retain data generated pertaining to operation of the device.Type: GrantFiled: August 31, 2014Date of Patent: September 5, 2017Assignee: Mederi Therapeutics IncInventors: Robin Bek, John Gaiser, Jay Qin, David S. Utley
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Patent number: 9675403Abstract: A device for treating a tissue region is supplied with a separate usage key card. The usage key card comprises a storage medium, which is formatted to contain an identification code unique to the usage key card. The usage key card is adapted to be read by a remote reader, to download the identification code for processing by a controller for the device. Processing of the identification code by the controller either enables or disables operation of the device according to prescribed criteria. A viewable image is generated on a display screen that changes in response to processing of the identification code.Type: GrantFiled: September 21, 2014Date of Patent: June 13, 2017Assignee: Mederi Therapeutics, Inc.Inventors: Jay Qin, Robin Bek, John W. Gaiser, David S. Utley
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Patent number: 8961488Abstract: A wearing article has a chassis and leg elastic members of a flat band shape that are attached to the chassis along leg side edges thereof. The chassis has regions each of which overlaps one of the leg elastic members and includes at least one series of depressions extending along the respective leg side edge.Type: GrantFiled: March 31, 2010Date of Patent: February 24, 2015Assignee: Uni-Charm CorporationInventors: Toshifumi Otsubo, Tatsuya Hashimoto, Mariko Yamashita
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Publication number: 20140358103Abstract: The present invention relates to disposable absorbent articles such as sanitary napkins, panty liners, baby diapers, adult incontinence articles and sweat pads. According to the present invention the absorbent article in the region designated for liquid deposition on its wearer facing surface has a single layer topsheet onto which liquid to be absorbed is provided during use of the article. The absorbent article includes a backsheet forming the liquid barrier surface and a unitary absorbent core between the topsheet and the backsheet. Importantly the unitary core provides improved liquid handling to the absorbent article and increases the masking, i.e. ability to hide stains due to absorbed liquid, of the article. This is particularly beneficial in the context of articles for absorption of liquids with high color intensity, such as menstrual liquid or urine of older adults.Type: ApplicationFiled: August 19, 2014Publication date: December 4, 2014Inventors: Pietro Febo, Luigi Marinelli
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Patent number: 8680361Abstract: A laminate with micro-texture having attachment lines oriented in a primary direction and mechanically activated in the primary direction.Type: GrantFiled: July 16, 2010Date of Patent: March 25, 2014Assignee: The Procter & Gamble CompanyInventors: John Jianbin Zhang, Andrea Marie Breitenbach
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Patent number: 8569570Abstract: The present invention relates to an airlaid sheet material comprising a dry laid fibrous web and a latex coating on both surfaces thereof in selected amounts. The airlaid sheet material can be an absorbent structure for absorption of fluids.Type: GrantFiled: May 15, 2012Date of Patent: October 29, 2013Assignee: The Procter and Gamble CompanyInventors: Maurizio Tamburro, Giovanni Carlucci
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Publication number: 20120289920Abstract: The present invention provides a disposable pants-type wearing article using belt-like leg elastic member. Respective opposite side edges of front and rear waist regions of a disposable pants-type wearing article are fusion-bonded together to define put flat and joined together regions. Belt-like leg elastic members respectively have front side upper ends lying in the front waist region and included by the put flat and joined together regions and rear side upper ends lying in the rear waist region and included by the put flat and joined together regions. In the put flat and joined together regions, lower edges of the upper ends and lower edges of the rear side upper ends are displaced one from another in such a manner that the one pair of the lower edges lie below the other pair of the lower edges. The one pair of the lower edges are fusion-bonded to at least one of a sheet-like member and a sheet-like member covering the other pair of the lower edges at a level lower than the other pair of the lower edges.Type: ApplicationFiled: January 21, 2011Publication date: November 15, 2012Applicant: Unicharm CorporationInventors: Toshifumi Otsubo, Tatsuya Hashimoto, Mariko Yamashita
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Patent number: 8303560Abstract: The composite material comprises an elastic film (F), made of polymer material, and a coating made of flocked fibers (13) on at least one face. The fibers are fixed to the film by a layer (C) of bonding material.Type: GrantFiled: April 7, 2006Date of Patent: November 6, 2012Assignee: Fintex & Partners Italia S.p.A.Inventors: Riccardo Cecconi, Barbara Bulleri, Chiara Allegrini, Stefano Muroni, Claudio Giacometti
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Patent number: 8212102Abstract: A diaper having front and rear waist regions and a waist-hole, the waist hole having a peripheral edge that is elastically stretchable in a circumferential direction and includes covering zones and elastic zones in the front and rear waist regions, which peripheral edge is adapted to be stretchable beyond lengths of the covering zones in the circumferential direction.Type: GrantFiled: March 16, 2009Date of Patent: July 3, 2012Assignee: Uni-Charm CorporationInventor: Yoshinori Kumasaka
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Patent number: 8183429Abstract: A composite sheet which has a low basis weight, can be prevented from breaking during the production of an absorbent article or in use, and is good to the touch. The composite sheet is a sheet formed by bonding a stretch nonwoven fabric to a nonstretch nonwoven fabric with an adhesive. The stretch nonwoven fabric is bonded in a stretched state to the nonstretch sheet. The stretch nonwoven fabric has, on each side, strip-form sparse regions and strip-form dense regions alternately formed. The sparse regions and dense regions on one side are alternately formed in a second direction so that the dense regions on this side do not overlie the dense regions on the other side. The composite sheet has a maximum breaking strength of 20 N/50 mm or higher.Type: GrantFiled: November 26, 2007Date of Patent: May 22, 2012Assignee: Uni-Charm CorporationInventors: Tatsuya Hashimoto, Hirotomo Mukai, Satoshi Mitsuno, Tomoko Tsuji, Kenichi Akaki
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Patent number: 7717893Abstract: An absorbent article comprising at least one topsheet; a liquid impervious backsheet joined with the topsheet; an absorbent core interposed between the topsheet and backsheet; and a slow recovery elastomer. The slow recovery elastomer exhibits a normalized unload force at 37° C. of greater than about 0.04N and at least about 20% post elongation strain at 22° C. after 15 seconds of recovery.Type: GrantFiled: June 3, 2005Date of Patent: May 18, 2010Assignee: The Procter & Gamble CompanyInventors: Bryn Hird, Robin Lynn McKiernan, Edward Joseph Urankar, Janet Neton, Mattias Schmidt, Joerg Mueller
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Publication number: 20100106123Abstract: [Problems] To prevent a hip cover portion of a back-side outer sheet from swelling and curling [Means for Solving Problems] In an underpants type disposable diaper, a ventral-side outer sheet 12F and a back-side outer sheet 12B are not connected but separated at a crotch portion, the back-side outer sheet 12F has a main unit section 13 that corresponds to joined sections 12A in an up-down direction and a back-side extension section 14 that extends below the back-side main unit section 13, the ventral-side outer sheet 12F is composed of only a ventral-side main unit section that corresponds to the joined sections 12A in the up-down direction, the back-side extension section 14 has a central portion 14M in the width direction overlapping the absorber 20 and hip cover portions 14C extending on both sides of the central portion 14M, in the back-side main unit section 13, first elongated resilient and elastic members 15 are fixed in a state of being extended in the width direction at a predetermined extension ratiType: ApplicationFiled: February 28, 2008Publication date: April 29, 2010Applicant: Daio Paper CorporationInventor: Akinori Fukae
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Patent number: 7629278Abstract: The presently described technology provides a low cost multilayer elastomeric film containing at least one layer of styrene block copolymer and at least one elastomer layer substantially free of styrene block copolymer such that the resultant film has a low permanent set substantially equal to or less than a film comprised of styrene block copolymer only. The elastomeric film may be used in elasticized features of various articles, such as disposable absorbent articles. Methods for producing the low cost elastomeric film having a low permanent set are also described.Type: GrantFiled: May 11, 2006Date of Patent: December 8, 2009Assignee: Pliant CorporationInventors: Amiel B. Sabbagh, Martin F. Hoenigmann
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Patent number: 7479578Abstract: An absorbent core comprising fluff pulp fiber treated with polysiloxane, wherein the absorbent core has a density of about 0.15 g/cm3 or greater and a Young's modulus of about 75 psi or less. The polysiloxane may comprise an amino-functional moiety, The absorbent core may comprise superabsorbent, and may be employed in a disposable absorbent product.Type: GrantFiled: December 19, 2003Date of Patent: January 20, 2009Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Gil Bernard Didier Garnier, Elizabeth Ann Allison, Mary Alice Berceau, Troy Michael Runge
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Patent number: 7393346Abstract: A disposable, leakproof, containment garment for a wearer is formed from a liquid-impermeable containment shell in a substantially humanoid shape with elastic marginal seal areas, such as torso and appendage margins. The elastic margins are designed to conformably surround the torso and appendages of the wearer and form tensioned and liquid-tight seals against the skin of the wearer when donned. By forming liquid tight seals against the body of the wearer, the garment is favorably constructed to utilize the full capability of any absorbent structures placed within the shell.Type: GrantFiled: December 20, 2002Date of Patent: July 1, 2008Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Michael Tod Morman, Thomas Harold Roessler
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Patent number: 7347846Abstract: Absorbent pants with a longitudinal direction and a transverse direction at right angles to the longitudinal direction and having an absorption core arranged between a liquid-tight cover sheet and a liquid-permeable cover sheet. The diaper pants have a front portion, a rear portion and an intermediate crotch portion, and a front edge and a rear edge extending substantially in the transverse direction and forming a waist opening, two side edges extending substantially in the longitudinal direction and forming two leg openings. An elastic sheet material is arranged at least along the waist opening of the diaper pants and extends at least from the waist opening to the leg openings, the elastic sheet material being secured to the absorption core in a substantially unstretched state.Type: GrantFiled: February 19, 2003Date of Patent: March 25, 2008Assignee: SCA Hygiene Products ABInventors: Kent Hermansson, Niclas Norrby, Catarina Linnér
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Patent number: 7314967Abstract: Moisture responsive members are disposed outboard of the absorbent core within disposable absorbent articles. The moisture responsive members expand in response to moisture from the wearer of the absorbent article thereby creating a seal between the moisture responsive member and the wearer of the absorbent article. The moisture responsive members can be disposed along the longitudinal sides of the disposable absorbent article or along the waist edges, both front and rear, of the disposable absorbent article.Type: GrantFiled: May 26, 2004Date of Patent: January 1, 2008Assignee: The Procter & Gamble CompanyInventors: Gregory Ashton, Eiro Fukuda, Donald Louis Zgoda
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Patent number: 7250549Abstract: An absorbent garment includes a front body panel having a terminal waist edge and a terminal crotch edge and a rear body panel having a terminal waist edge and a terminal crotch edge. The terminal crotch edge of the rear body panel is longitudinally spaced from and forms a gap with the terminal crotch edge of the front body panel. An absorbent insert includes first and second longitudinally spaced end portions and opposite laterally spaced side edges. The absorbent insert bridges the gap between the front and rear body panels with the first and second end portions overlying and connected to the front and rear body panels respectively. At least one of the first and second end portions of the absorbent insert is connected respectively to a corresponding one of the front and rear body panels with at least first and second adhesive regions having first and second adhesive basis weights respectively.Type: GrantFiled: December 30, 2003Date of Patent: July 31, 2007Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Sandra A. Richlen, Paul Christoffel, Suzanne M. Schmoker, Paul Hasler, Sarah Freiburger, David F. Bishop, Melanie J. Milslagle
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Patent number: 7081559Abstract: An absorbent composite sheet is thin and has a surface to be easily situated in dry condition. The absorbent composite sheet includes at least a first layer and a second layer. The first layer placed on the side of receiving a liquid is a non-woven fabric fabricated from thermoplastic synthetic resin fibers. The second layer stacked below the first layer is a non-woven fabric fabricated by entangling cellulose type fibers and thermoplastic synthetic resin fibers. The first layer and the second layer are joined by fuse bonding synthetic resin fibers of the first layer and synthetic resin fibers of the second layer. The liquid applied on a surface of the first layer is transferred to the second layer through gaps between synthetic resin fibers of the first layer.Type: GrantFiled: September 15, 2003Date of Patent: July 25, 2006Assignee: Uni-Charm CorporationInventors: Michiyo Fujikawa, Takeshi Hanajiri
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Patent number: 6987210Abstract: A protective undergarment including an integrally formed undergarment body formed of a liquid impermeable material, and an absorptive pad associated with the integrally formed undergarment body.Type: GrantFiled: August 5, 1999Date of Patent: January 17, 2006Assignee: TamiCare Ltd.Inventor: Tamar Giloh
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Publication number: 20040182499Abstract: Stretchable film laminates including a layer of elastomeric openwork, such as a plurality of elastic strands or an elastomeric mesh structure. The stretchable film laminates may include a film layer bonded to the layer of elastomeric openwork, with the film layer having cross-directional stretch and the laminate having a multi-phase stretchability profile. The stretchable film laminates may be made by extruding a film from a die, stretching the film, forming and stretching a layer of elastomeric openwork, conveying the stretched elastomeric openwork onto the film while the film is stretched, and passing the film and the elastomeric openwork through a nip. The invention also includes a machine capable of producing machine-direction, cross-direction, and biaxial stretch materials. The machine includes at least one extruder, at least one filament die and at least one film die both attached to the extruder(s), and at least one nip downstream of the extruder(s).Type: ApplicationFiled: December 17, 2003Publication date: September 23, 2004Inventors: Leslie Warren Collier, Susan Elaine Shawver, Bryon Paul Day, Raymond Jeffrey May, James Russell Fitts, Michael Tod Morman, Monica Varriale, Matthew Boyd Lake, David Michael Matela, Gregory Todd Sudduth, Randall James Palmer, Charles John Morell, Prasad Shrikrishna Potnis, Rasha Wafik Zaki Farag, Cristian M. Neculescu, Peiguang Zhou
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Patent number: 6720388Abstract: A polypropylene blend including from 0.5 to 50% by weight of a syndiotactic polypropylene having a multimodal molecular weight distribution and at least 50% by weight of an isotactic polypropylene.Type: GrantFiled: January 24, 2002Date of Patent: April 13, 2004Assignee: Atofina Research S.A.Inventor: Axel Demain
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Patent number: 6647600Abstract: A hook and loop fastener for flat structures, particularly for textile products, having a hook part and an interlocking part, the interlocking part being made of a nonwoven composite having worked-in, textured, polymeric threads, the nonwoven composite being used as support for the textured threads, and the textured threads forming the loops for the hooks.Type: GrantFiled: July 25, 2001Date of Patent: November 18, 2003Assignee: Firma Carl FreudenbergInventors: Manfred Jöst, Dieter Groitzsch, Gerhard Schaut
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Patent number: 6537935Abstract: A nonwoven fabric sheet comprising a multiplicity of generally parallel elongate strands of inelastic thermoplastic material extending in a first direction in spaced relationship, each of said strands having opposite elongate side surface portions that are spaced from and are adjacent elongate side surface portions of adjacent strands, and each of said strands also having corresponding opposite first and second elongate surface portions extending between said opposite elongate side surface portions, and a first sheet of flexible nonwoven material having spaced anchor portions bonded at first bond sites of the strands along said first elongate surface portions wherein the elongate strands thermoplastic material is oriented at least between adjacent bond sites along the length of the strands.Type: GrantFiled: January 29, 1999Date of Patent: March 25, 2003Assignee: 3M Innovative Properties CompanyInventors: Jayshree Seth, William Melbye
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Publication number: 20020169430Abstract: An absorbent article, such as a thin incontinence pad or pantyliner, is disclosed which has a multilayered absorbent core for providing protection against involuntary urine loss. The absorbent article includes a liquid permeable bodyside liner, a liquid-impermeable baffle, and first and second absorbents positioned between the liner and the baffle. The first absorbent is a stabilized material containing a superabsorbent and has a predetermined basis weight. The second absorbent is positioned below the first absorbent and contains a different superabsorbent from the superabsorbent present in the first absorbent. The second absorbent has a basis weight that is equal or greater than the basis weight of the first absorbent.Type: ApplicationFiled: May 11, 2001Publication date: November 14, 2002Inventors: Robert Rex Kirk, Jody Dorothy Suprise
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Patent number: 6479061Abstract: The present invention pertains to an airlaid composite which is made of pulp fibers, at least about 2% by weight bicomponent fiber, and moisture. This airlaid composite is unique in that a uniformly even composite is made which upon calendering, becomes a thin structure which maintains significant absorbency when saturated. The bicomponent fibers of the present invention include a first polymer component and a second polymer component, and the first polymer component melts at a temperature lower than the melting temperature of the second polymer component. Mixing of the pulp fibers with the bicomponent fibers is done in such a way that the fibers are evenly dispersed in the airlaid composite. This airlaid composite is then heated such that at least a portion of the first polymer component of the bicomponent fiber is melted, which bond the bicomponent fibers to many of the pulp and bicomponent fibers when cooled.Type: GrantFiled: October 26, 2001Date of Patent: November 12, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Monica C. Fontenot, Terry Pearce Ford, James Jay Tanner, Jonathan Robert Owen, John Joseph Lassig, Barbara Jean Burns, Alan Grady Shuman, Victor Michael Gentile
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Patent number: 6451429Abstract: The present invention is directed to a novel process of making N-isopropyl acrylamide (NiPAm) polymers based upon the reaction of poly(acrylic acid) and N-isopropylamine. The disclosed method of the present invention uses polyacrylic acid as a starting material to synthesize NiPAm polymers. In one embodiment, the present invention discloses a condensation reaction of an intermediate salt to form homopolymers, copolymers and terpolymers of N-isopropyl acrylamide (NiPAm) with acrylic acid and/or alkyl acrylates in a molten state, which is adaptable to a continuous reactive extrusion process. Binder compositions, water-dispersible products and thermoformable articles containing the NiPAm polymers are also disclosed.Type: GrantFiled: May 18, 2001Date of Patent: September 17, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Pavneet Singh Mumick, Yihua Chang, James Hongxue Wang
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Publication number: 20020123727Abstract: The present invention provides a bonded cellulosic fibrous product having low creep. The product includes crosslinked cellulosic fibers and a bonding agent. Methods for forming the bonded cellulosic fibrous product and personal care absorbent products that include the bonded product are also provided.Type: ApplicationFiled: November 14, 2001Publication date: September 5, 2002Inventors: Richard A. Edmark, Darryl T. Genest
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Patent number: 6423884Abstract: An absorbent article includes an outer cover and a bodyside liner. A fecal retaining structure having at least one aperture is mounted in the rear portion of the absorbent article. The retaining structure has at least one, preferably multiple, apertures sized to retain exudates from a typical bowel movement and to displace such exudates from the skin of the user. The fecal retaining structure preferably has a surface layer on the outer surface which contacts the body of the user. The surface layer has a slick surface that assists in moving fecal material into the apertures. An absorbent core may be mounted in the absorbent article, especially in the front portion of the absorbent article.Type: GrantFiled: October 11, 1996Date of Patent: July 23, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventor: Heidi Ann Oehmen
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Patent number: 6368609Abstract: The present invention pertains to an airlaid composite which is made of pulp fibers, at least about 2% by weight bicomponent fiber, and moisture. This airlaid composite is unique in that a uniformly even composite is made which upon calendering, becomes a thin structure which maintains significant absorbency when saturated. The bicomponent fibers of the present invention include a first polymer component and a second polymer component, and the first polymer component melts at a temperature lower than the melting temperature of the second polymer component. Mixing of the pulp fibers with the bicomponent fibers is done in such a way that the fibers are evenly dispersed in the airlaid composite. This airlaid composite is then heated such that at least a portion of the first polymer component of the bicomponent fiber is melted, which bond the bicomponent fibers to many of the pulp and bicomponent fibers when cooled.Type: GrantFiled: April 12, 1999Date of Patent: April 9, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Monica C. Fontenot, Terry Pearce Ford, James Jay Tanner, Jonathan Robert Owen, John Joseph Lassig, Barbara Jean Burns, Alan Grady Shuman, Victor Michael Gentile
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Patent number: 6362389Abstract: An absorbent elastic nonwoven material having improved conformability includes a matrix of thermoplastic elastomeric nonwoven filaments, present in an amount of about 3 to less than 20% by weight of the absorbent elastic nonwoven material. A plurality of absorbent fibers and a superabsorbent material are contained within the matrix, each constituting about 20-77% by weight of the absorbent elastic nonwoven material. The absorbent elastic nonwoven material is useful in a wide variety of personal care and medical absorbent articles where softness and conformability, as well as absorbency and elasticity, are important.Type: GrantFiled: November 20, 1998Date of Patent: March 26, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Debra Jean McDowall, Charles Allen Smith, Melanie Stephens Winstanley
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Publication number: 20020019616Abstract: An elastic laminate suitable for use with a nonwoven garment has an elastic film with elastic strands placed thereon. The laminate is particularly suitable for combining with facing materials when making “targeted elastic materials” for placement into the structure of the nonwoven garment. A disposable garment may then utilize the elastic laminate, or the targeted elastic material made therefrom, to include an area of elasticized gathering under tension to better conform to the body of the wearer.Type: ApplicationFiled: May 14, 2001Publication date: February 14, 2002Inventor: Oomman Painumoottil Thomas
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Patent number: 6323389Abstract: The present invention comprises a continuous feed spun bonded laminate having improved elastic properties measured at body temperature. The laminate comprises at least one first and second nonelastic layers between which is sandwiched at least one elastic layer, the elastic layer being comprised of a triblock polystyrene-poly(ethylene/propylene)-polystyrene (“SEPS”) copolymer having a number average molecular weight of about 81,000 g/mol. The weight percent of styrene is approximately 18% and the weight percent of ethylene/propylene is approximately 82%. The molecular weight increase in the EP block, while holding the molecular weight of the styrene block constant, increases the entanglement density, polymer chain persistence length and the relaxation time. The resulting laminate load decay rate and load loss measurements over a period of 12 hours at body temperature showed marked improvement over known CFSBL product.Type: GrantFiled: October 2, 1998Date of Patent: November 27, 2001Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Oomman P. Thomas, James R. Fitts, Jr., Richard M. Shane, Donald V. Willitts
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Patent number: 6313372Abstract: A stretch-activated elastic composite includes a non-woven fabric having a potential elongatability of higher than 100% in a predetermined direction, and an elastically recoverable, elastic sheet. The elastic sheet in its unstretched state is partially bonded to the non-woven fabric in its unelongated state. The elastic composite exhibits, per unit width of 5 cm, (1) a stress of lower than 1000 g at 30% stretch, (2) a stress of higher than 400 g at 100% stretch, (3) a breaking point of higher than 400 g and (4) an elastic limit of higher than 200%. The elastic composite after being stretched at a rate of lower than 200% exhibits, per unit width of 5 cm, (1) a stress of lower than 500 g at 30% stretch and (2) a stress of higher than 100 g at 100% stretch. The elastic composite after three repeated cycles of 150% stretching and relaxing exhibits an elastic recovery rate of higher than 60%.Type: GrantFiled: June 21, 1996Date of Patent: November 6, 2001Assignee: Paragon Trade Brands, Inc.Inventor: Migaku Suzuki
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Patent number: 6221062Abstract: The present invention relates to a simple, cost-effective stretchable, superabsorbent material-containing absorbent structure that provides the superabsorbent material particles therein with improved liquid holding capacity. The stretchable absorbent structure can be used in absorbent articles such as diapers, sanitary napkins, panty liners, and incontinence pads. The stretchable absorbent structure comprises a stretchable absorbent liquid impervious barrier layer and a nonwoven component that is bonded to the barrier layer when the barrier layer is stretched at least partially toward its stretched condition, and superabsorbent, hydrogel-forming material deposited on or distributed within the nonwoven component.Type: GrantFiled: November 5, 1996Date of Patent: April 24, 2001Assignee: The Procter & Gamble CompanyInventor: Thomas Ward Osborn, III
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Patent number: 6087550Abstract: 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: GrantFiled: November 22, 1995Date of Patent: July 11, 2000Assignee: H. B. Fuller Licensing & Financing, Inc.Inventors: Carolyn Anderson-Fischer, Mai Nguyen, Mark S. Hull, Mark G. Katsaros, Mark S. Kroll, Greg J. VanLith
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Patent number: 6077588Abstract: One or more particulate active agents are fused to the surface of a substrate web by mixing the particulate agents with a particulate binder having a particle size not exceeding an average diameter of approximately 40 microns and coating the composite mixture onto the surface of the substrate. Thereafter, the coated substrate is heated to a temperature equal to or greater than the Vicat softening temperature of the binder and compressed within the nip of a pair of pressure rolls to achieve fusion. If desired, a top layer may be placed upon the coated composite prior to the compression step. Also disclosed are various products manufactured by the process.Type: GrantFiled: July 22, 1997Date of Patent: June 20, 2000Assignee: Koslow Technologies CorporationInventors: Evan E. Koslow, Richard D. Kendrick, Gordon Spilkin
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Patent number: 6068620Abstract: A disposable absorbent garment comprising a topsheet, a backsheet and an absorbent core disposed between the topsheet and backsheet is disclosed. The absorbent core is formed from at least one and preferably more than one laminate comprising three layers, including an upper layer, a lower layer and a central fibrous layer containing from about 50-95% by weight superabsorbent polymer. The upper and lower layers comprise tissue, airlaid fluff pulp or synthetic non-woven fibrous layers. The upper and lower layers together assist to maintain the integrity of the core during manufacture and in use, contain the superabsorbent polymer within the insult area of the garment and act to diffuse multiple insults so that gel blocking is minimized. The absorbent garment thus formed is very thin, lightweight and economical.Type: GrantFiled: March 30, 1998Date of Patent: May 30, 2000Assignee: Paragon Trade BrandsInventor: Harry J. Chmielewski
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Patent number: 6028240Abstract: Disclosed is a disposable protective garment adapted to stretchably conform to the body of a wearer, the garment being composed of at least one piece of a reversibly-necked material which is adapted to have recoverable stretch in at least one direction. The reversibly-necked material is necked by drawing and treated to impart memory of its necked configuration so it has recoverable stretch while also being breathable, liquid resistant and conformable. The disposable protective garment may contain a body portion, sleeve portions and/or leg portions. The stretch direction of reversibly-necked material may be parallel to the direction of motion of the body portion, sleeve portions and/or leg portions.Type: GrantFiled: November 17, 1997Date of Patent: February 22, 2000Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Joyce Ann Wessel, Mark Daniel Strickland
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Patent number: 5972806Abstract: The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads. More particularly, the present invention relates to absorbent articles, such as sanitary napkins, that have undergarment covering components (or "side wrapping elements") that automatically wrap the sides of a wearer's panties and provide an alternative to conventional side flaps. The side wrapping elements have at least one zone of extensibility and at a region therein that is stiffer than the zone of extensibility.Type: GrantFiled: February 7, 1997Date of Patent: October 26, 1999Assignee: The Procter & Gamble CompanyInventors: Eric Patton Weinberger, Bruce William Lavash, Robb Eric Olsen, James William Cree
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Patent number: 5951536Abstract: The present invention relates to absorbent articles such as sanitary napkins worn by women. More particularly, the present invention relates to absorbent articles, such as thin sanitary napkins, that are stretchable, especially in the longitudinal direction.Type: GrantFiled: December 16, 1996Date of Patent: September 14, 1999Assignee: The Procter & Gamble CompanyInventors: Thomas W. Osborn, III, Kazuko Sugahara, Charles W. Chappell, Letha M. Hines
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Patent number: 5938651Abstract: A disposable, absorbent article such as a diaper or an incontinence guard includes an absorbent pad disposed between inner and outer casing layers. At least one of the inner and outer casing layers is made of an elastic material having areas from which material has been removed while leaving coherent material parts in order to impart different elastic properties to different parts of the material. The material removed can be in the form of through holes or blind holes.Type: GrantFiled: September 24, 1997Date of Patent: August 17, 1999Assignee: SCA Hygiene Products AktiebolagInventors: Urban Widlund, Roy Hansson
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Patent number: 5932497Abstract: A soft, breathable elastic laminate of an elastic film loaded with a filler having a particle size suitable for pore formation and stretched in at least two directions to form a plurality of micropores bonded to a nonwoven web. In accordance with one embodiment, the elastic film is water vapor impermeable prior to being stretched.Type: GrantFiled: September 15, 1997Date of Patent: August 3, 1999Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Michael Tod Morman, Cindy Janja Milicevic
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Patent number: 5921973Abstract: The invention is directed to composite elastic nonwoven fabrics and processes for producing the same. The fabric includes a layer of inelastic continuous or staple fibers formed from a blend of polyethylene and polypropylene laminated to an elastic layer. Preferably, the composition of the fibers ranges between 5 to 50 percent by weight of polypropylene with the balance made up of polyethylene. The nonelastic fibers are capable of being highly elongated upon mechanical stretching without adversely impacting fiber tie down. Accordingly, a smooth, strong, coherent fabric is obtained, which is especially well suited for incorporation into disposable absorbent articles such as diapers, training pants, incontinence briefs and feminine hygiene products.Type: GrantFiled: February 17, 1997Date of Patent: July 13, 1999Assignee: BBA Nonwoven Simpsonville, Inc.Inventors: David D. Newkirk, Jared A. Austin