Patents Assigned to Japan Absorbent Technology Institute
  • Patent number: 8043276
    Abstract: An absorbent article, including: a leak preventer in sheet form having a bottom surface part and a pair of side parts raised upward from both the right and left sides of the bottom surface part and forming an internal space by the bottom surface part and the pair of side parts; an absorber arranged in the internal space at least in one layer, containing a super absorbent polymer, and capable of absorbing body fluids; a pair of side edge stretchable bands provided to extend along edge parts of the pair of side parts; a waist band joined to a rear end of the leak preventer and extending in a lateral direction; and a pair of hip wrapping stretchable bands connected to the pair of side parts of the leak preventer and/or the pair of side edge stretchable bands and to the waist band.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: October 25, 2011
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Reiko Moriya
  • Patent number: 7976523
    Abstract: An absorbent product capable of preventing the absorbing rate from significantly lowering with the elapse of time, from the start of use to a final stage when the absorbing capacity of the product reaches a limit, is provided. The absorbent product has a very small re-wet amount. The absorbent product includes a liquid-impermeable surface sheet positioned on the upper side, a liquid-impermeable back sheet positioned on the lower side, and an absorber containing super absorbent polymer to absorb discharged liquid positioned between the surface sheet and the back sheet, wherein a flow passage is provided to allow a part or all of the discharged liquid supplied to the surface sheet to move to a side of the back sheet.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: July 12, 2011
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Reiko Moriya
  • Patent number: 7935861
    Abstract: A liquid distribution unit disposed in a position between an absorbent member and a wearer's body. The liquid distribution unit includes a sheet, the sheet including a plurality of openings defined through material which is otherwise liquid impermeable, and a plurality of introductory tubes extending toward the absorbent member, and each one of the introductory tubes includes one first end and one second end. Each first end of the tubes is connected to the sheet so that a center of each of a plurality of openings of the sheet is coincident with a center of an opening of each first end. The introductory tubes are adjacent to one another through an empty space. An absorbent product having the distribution unit is provided.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: May 3, 2011
    Assignee: Japan Absorbent Technology Institute
    Inventor: Migaku Suzuki
  • Patent number: 7842019
    Abstract: In an absorbent product such as a diaper comprising a back sheet, an absorber, and a skin contact sheet, the skin contact sheet is disposed on the absorber as the uppermost layer which comes in contact with the skin of the wearer and has openings which allow the passage of excretions. The absorber and the skin contact sheet are joined only at both ends of the absorbent product in the longitudinal directions.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 30, 2010
    Assignees: Oji Paper Co., Ltd., Japan Absorbent Technology Institute
    Inventors: Katsuhiko Sugiyama, Yoshiaki Takamatsu, Rie Kuwabara, Masaru Tsubata, Migaku Suzuki
  • Patent number: 7521109
    Abstract: An absorber comprising a laminate of two or more layers of highly water-absorbent sheets each containing a highly water-absorbent resin in high proportion, which absorber can satisfactorily cope with the feeding speed of aqueous liquid. In particular, an absorber comprising a laminate water-absorbent member, the laminate water-absorbent member consisting of a laminate of two or more layers of highly water-absorbent sheets each containing a highly water-absorbent resin and capable of absorbing an aqueous liquid, and a by-pass channel member, the by-pass channel member having a channel for, providing that an upper side refers to the side of laminate water-absorbent member fed with the aqueous liquid, moving the aqueous liquid fed to a first highly water-absorbent sheet disposed at the uppermost part of the laminate water-absorbent member from the first highly water-absorbent sheet to another highly water-absorbent sheet.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: April 21, 2009
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Reiko Moriya
  • Publication number: 20090036852
    Abstract: It is an object of the present invention to provide an absorbent article capable of preventing loosening and slipping off.
    Type: Application
    Filed: June 30, 2006
    Publication date: February 5, 2009
    Applicant: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Reiko Moriya
  • Publication number: 20090005752
    Abstract: It is an object of the present invention to provide an absorbent article capable of separating urine and feces efficiently in use and having high urine absorption capacity. The object is attained by an absorbent article including: a first leak preventer in sheet form having a base part; a pair of side members extending in a longitudinal direction on right and left sides of the base part of the first leak preventer; an absorber comprised of at least one layer in an inner space formed by the base part of the first leak preventer and the side members, containing a super absorbent polymer, and capable of absorbing a body fluid; and a bridging member bonded to the pair of side members for bridging the side members, dividing the inner space into front and rear parts, capable of exhibiting a function of separating urine and feces, in which the bridging member is formed to be stretchable in a lateral direction.
    Type: Application
    Filed: February 5, 2007
    Publication date: January 1, 2009
    Applicant: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Reiko Moriya
  • Patent number: 7381294
    Abstract: A method for producing a microfibrillated cellulose, which comprises subjecting a slurry containing a pulp having a solids concentration of 1 to 6 wt % to the treatment with a disc refiner repeatedly ten times or more, to thereby prepare a microfibrillated cellulose having a number average fiber length or 0.2 mm or less and an amount of water hold of 10 mL/g or more, the amount representing the volume of water capable of being held by a unit weight of the cellulose fiber. The method allows the production of a microfibrillated cellulose having high quality with stability and with good efficiency.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: June 3, 2008
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Yutaka Hattori
  • Patent number: 7344522
    Abstract: An absorbent easily rendered three-dimensional in the central region by water absorption is composed of a sheet-like absorbent having regions where a highly absorptive component is present and regions where it is absent, these presence and absence regions parallelly extending lengthwise of a sheet-like base material and alternating with each other, the sheet-like base material being turned back along a bending line in the highly absorptive component absence regions of the sheet-like absorbent, there being at least one band-like portion of multilayer construction where the highly absorptive component presence regions are superposed in a plurality of layers.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: March 18, 2008
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Katsuhiko Sugiyama, Satomi Takematsu, Kazuyo Mori
  • Publication number: 20060241557
    Abstract: Disclosed is an absorbent article including: a first sheet leak preventer; a second sheet leak preventer present above and in a rear part of the first leak preventer; and an absorbent containing a super absorbent polymer, capable of absorbing a body fluid, and provided above the first leak preventer extending from a front part of the first leak preventer beneath the second leak preventer in at least one layer. The absorbent article of the present invention can separate urine and feces efficiently in use and having high urine absorption capacity.
    Type: Application
    Filed: August 18, 2005
    Publication date: October 26, 2006
    Applicant: JAPAN ABSORBENT TECHNOLOGY INSTITUTE
    Inventors: Reiko Moriya, Migaku Suzuki
  • Patent number: 7101438
    Abstract: A coater for dispersed slurry capable of coating coated dispersed slurry on a nonwoven cloth-like base material while bringing the slurry into contact with the material, comprising a net conveyor for transferring the nonwoven cloth-like base material, a supply means for supplying the dispersed slurry onto the net conveyor, and a coating roll for forming a coating layer of a specified thickness by pressing, from the upper side thereof, the dispersed slurry supplied onto the nonwoven cloth-like base material, wherein this coating roll is allowed to come into direct contact with the dispersed slurry on the peripheral surface of the nonwoven cloth-like base material or allowed to come into contact with the dispersed slurry through a film provided therethrough.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: September 5, 2006
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Shingo Mori
  • Publication number: 20050194477
    Abstract: A method for producing a microfibrillated cellulose, which comprises subjecting a slurry containing a pulp having a solids concentration of 1 to 6 wt % to the treatment with a disc refiner repeatedly ten times or more, to thereby prepare a microfibrillated cellulose having a number average fiber length or 0.2 mm or less and an amount of water hold of 10 mL/g or more, the amount representing the volume of water capable of being held by a unit weight of the cellulose fiber. The method allows the production of a microfibrillated cellulose having high quality with stability and with good efficiency.
    Type: Application
    Filed: July 15, 2003
    Publication date: September 8, 2005
    Applicant: Japan Absorbent Technology Institute
    Inventor: Migaku Suzuki
  • Publication number: 20050147810
    Abstract: An absorber comprising a laminate of two or more layers of highly water-absorbent sheets each containing a highly water-absorbent resin in high proportion, which absorber can satisfactorily cope with the feeding speed of aqueous liquid. In particular, an absorber comprising a laminate water-absorbent member, the laminate water-absorbent member consisting of a laminate of two or more layers of highly water-absorbent sheets each containing a highly water-absorbent resin and capable of absorbing an aqueous liquid, and a by-pass channel member, the by-pass channel member having a channel for, providing that an upper side refers to the side of laminate water-absorbent member fed with the aqueous liquid, moving the aqueous liquid fed to a first highly water-absorbent sheet disposed at the uppermost part of the laminate water-absorbent member from the first highly water-absorbent sheet to another highly water-absorbent sheet.
    Type: Application
    Filed: April 4, 2003
    Publication date: July 7, 2005
    Applicant: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Reiko Moriya
  • Patent number: 6790798
    Abstract: A highly absorbent composite sheet wherein a non-woven substrate having a bulky structure and solid SAP with a part contained inside said bulky structure and the rest exposed on the surface of said non-woven substrate are provided, a thermally fusible component being a hot-melt adhesive, the hot-melt adhesive forming a fibrous network and covering said solid SAP and fine cellulose fibers in contact with the solid SAP whereby a single or double fibrous network is provided with the solid SAP held in position. A method for manufacturing same, and an absorbent article using such highly absorbent composite sheet are also provided.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: September 14, 2004
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Ryoichi Matsumoto
  • Publication number: 20030220623
    Abstract: An absorptive product comprising a front part, a rear part, an inside leg part, a waist opening, a pair of leg circumference openings, and a liquid-impermeable back sheet, wherein disposed on the inner side of the back sheet are a urinal front absorber and a feces rear absorber, with a take-out port formed for taking out these absorbers.
    Type: Application
    Filed: March 21, 2003
    Publication date: November 27, 2003
    Applicants: The Procter & Gamble Company, Japan Absorbent Technology Institute
    Inventors: Katsuhiko Sugiyama, Rie Kuwabara, Migaku Suzuki
  • Patent number: 6540853
    Abstract: An absorbent composite sheet mainly consisting of a fibrous substrate web, a super absorbent polymer, and a bonding component bonding both of them with each other, wherein (a) the fibrous substrate web is a non-bonded web with a few of the constituent fibers bonded with each other, (b) a liquid mixture system is used of a medium mainly consisting of the super absorbent polymer and the bonding component, (c) a composite web is formed by adding the liquid mixture system to the fibrous substrate web, and (d) a liquid component is separated from the composite web so that fixing of the super absorbent polymer to the fibrous substrate web and bonding of the webs of the fibrous substrate web with one another are carried out at the same time. Methods of manufacturing such absorbent composite sheets are also provided.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: April 1, 2003
    Assignees: Japan Absorbent Technology Institute, Mitsubishi Corporation
    Inventors: Migaku Suzuki, Shingo Mori
  • Patent number: 6391013
    Abstract: An absorbent article having a main body which includes a backsheet formed of a liquid impermeable sheet, a topsheet formed of a liquid permeable sheet, an absorbent core interposed between the backsheet and the topsheet, and leg gathers disposed along leg holes. Two sets of elastic members are, in a stretched state, bonded to a non-woven fabric along the leg holes. Each set of elastic members is not bonded to the non-woven fabric in a region which traverses a crotch region to extend from one of the leg holes to the other, and is cut in the non-bonded region so that the elastic members snap back toward crossing points where the two sets of the elastic members meet to form tails.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: May 21, 2002
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Hiroaki Fukui
  • Patent number: 5827260
    Abstract: According to the present invention, there is provided a sanitary article comprising a main body having a liquid-impermeable back sheet, a liquid-permeable front sheet and an absorbent material and leg holes having at the opposed edge portions of the main body, further comprising fixation means forming a flexible ring which are fitted closely over the entire circumference of the proximal portion of each of the wearer's legs.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: October 27, 1998
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Hiroaki Fukui
  • Patent number: 5814569
    Abstract: A nonwoven fabric of superior uniaxial elasticity is provided. The nonwoven fabric comprises of conjugate filaments each of which is about concentric sheath-core type. Core component is composed of polyester and sheath component is composed of polyolefine. In the nonwoven fabric, heat bonded areas are interspersed by heat bonding the conjugate filaments one another by softening or melting the sheath component. The nonwoven fabric satisfies following four properties concurrently: (i) breaking elongation in cross direction is 150% or more, (ii) ratio of breaking elongation in cross direction to breaking elongation in machine direction is 5 or more, (iii) percentage of elastic recovery at the time of extending the nonwoven fabric by 50% in cross direction is 60% or more, and (iv) percentage of elastic recovery at the time of extending the nonwoven fabric by 100% in cross direction is 50% or more. A heat is partially applied to a filamentous web, thereby obtaining a filamentous fleece.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: September 29, 1998
    Assignees: Unitika Ltd., Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Hiroaki Fukui, Yoshihiko Mineda, Koichi Nagaoka, Michiyo Iimi
  • Patent number: 5693038
    Abstract: According to the present invention, there is provided a sanitary article comprising a main body having a liquid-impermeable back sheet, a liquid-permeable front sheet and an absorbent material and leg holes having at the opposed edge portions of the main body, further comprising fixation means forming a flexible ring which are fitted closely over the entire circumference of the proximal portion of each of the wearer's legs. The article to which the present invention is directed includes both the diaper and the sanitary napkin and, hence, as the main body, either of one taking the form of underpants when worn, which has a size enough to cover the wearer's entire waist portion, and of a relatively small one which covers only the wearer's crotch portion is used.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: December 2, 1997
    Assignee: Japan Absorbent Technology Institute
    Inventors: Migaku Suzuki, Hiroaki Fukui