Abstract: This invention is directed to coated water-swellable materials, typically solid, particulate, water-swellable materials, i.e. materials that comprise hydrogel-forming polymers, whereof at least a part is coated with a coating, which substantially does not break when the polymers swell, as set out in the method herein. Said coating is present at a level of at least 1% by weight of the water-swellable material. The coating comprises preferably an elastomeric polymeric material. The invention also relates products, e.g., disposable absorbent articles, comprising such coated water-swellable material.
Type:
Grant
Filed:
March 17, 2009
Date of Patent:
September 14, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Mattias Schmidt, Axel Meyer, Bruno Johannes Ehrnsperger, Stephen Allen Goldman, Edward Joseph Urankar
Abstract: The present invention relates to absorbent articles, such as diapers and sanitary napkins, and acquisition members useful for such articles. More specifically, the invention relates to an acquisition member comprising a multitude of fibers and a latex binder, the liquid acquisition member having a void volume of at least 7 cubic centimeter per gram in the temperature range from 20° C. to 40° C., the binder comprising a dispersion of a polymer substance in an essentially aqueous medium, the polymer substance being capable of forming a film, said film having a tan ? value, as defined herein, at 20° C. and at 40° C., wherein the tan ? value at 40° C. is not greater than said tan ? value at 20° C.
Type:
Grant
Filed:
August 6, 2004
Date of Patent:
August 31, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Manuela Schneider, Christopfer Fuchs, Olaf van Gansewinkel
Abstract: A method for determining the relative benefits of products which affect animal epithelial tissue is provided. Also provided is a method for evaluating quantitative changes on one or more affected surfaces of epithelial tissue of a subject caused by a test product.
Type:
Grant
Filed:
April 25, 2007
Date of Patent:
August 10, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Stephen Worth Hendrix, Scott Edward Osborne, Susan Baldwin
Abstract: A method for determining the relative benefits of products which affect animal epithelial tissue is provided. Also provided is a method for evaluating quantitative changes on one or more affected surfaces of epithelial tissue of a subject caused by a test product.
Type:
Grant
Filed:
April 25, 2007
Date of Patent:
August 10, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Stephen Worth Hendrix, Scott Edward Osborne, Susan Baldwin
Abstract: A method for determining the relative benefits of products which affect animal epithelial tissue is provided. Also provided is a method for evaluating quantitative changes on one or more affected surfaces of epithelial tissue of a subject caused by a test product.
Type:
Grant
Filed:
April 25, 2007
Date of Patent:
August 3, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Stephen Worth Hendrix, Scott Edward Osborne, Susan Baldwin
Abstract: A liquid acquisition layer having a multitude of fibers and a binder is useful in a variety of absorbent articles, such as diapers and sanitary napkins. The liquid acquisition layer has a caliper which decreases in response to external pressure and increases upon removal of said external pressure. The increase in caliper is measured by a recovery value, wherein the liquid acquisition layer recovery value at 45° C. is at least 65% of the recovery value at 20° C.
Type:
Grant
Filed:
August 6, 2004
Date of Patent:
August 3, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Manuela Schneider, Christofer Fuchs, Olaf Van Gansewinkel
Abstract: A method for determining the relative benefits of products which affect animal epithelial tissue is provided. Also provided is a method for evaluating quantitative changes on one or more affected surfaces of epithelial tissue of a subject caused by a test product.
Type:
Grant
Filed:
April 25, 2007
Date of Patent:
July 27, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Stephen Worth Hendrix, Scott Edward Osborne, Susan Baldwin
Abstract: The present disclosure relates to a method of surface treating particulate materials with electromagnetic radiation, in particular a method of cross-linking superabsorbent polymer particles using UV irradiation. The method is carried out with a so-called roll reactor, which comprises a rotating roll and an irradiation source. Radical former molecules can be applied on the surface of superabsorbent polymer particles. The particulate material is fed onto the surface of the roll and is irradiated while moved with the rotating roll. The irradiation source is provided such that the radiation emitted by the irradiation source is able to reach at least part of the particulate material that has been fed onto the surface of the roll. The irradiation source for use in the method of the present disclosure is able to emit UV radiation of a wavelength between 201 nm and 400 nm. The present disclosure also relates to absorbent articles comprising surface treated superabsorbent particles made by said method.
Type:
Grant
Filed:
February 22, 2008
Date of Patent:
July 27, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Torsten Lindner, Aleksey Mikhailovich Pinyayev, Andrew Julian Wnuk
Abstract: The present invention relates to methods of assessing the health of skin. Biomarkers are used to evaluate skin samples. Using metabonomics approaches, samples taken from different skin sites or at different times during a treatment are used to diagnose skin conditions or to appraise various skin treatments for efficacy.
Type:
Grant
Filed:
February 16, 2007
Date of Patent:
July 20, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Robert Stephen Honkonen, Wendy Qin, Hui Yang, David John Maltbie, Bruce Ernest Tepper
Abstract: A process for printing active materials, such as adhesives, onto articles, such as absorbent articles or release paper, using a coater with a multitude of applicators. The applicators coat a surface (roll) with a multitude of beads of the active material. The process also uses a specific coating blade, which contacts the surface with the active material at a certain angle and thereby coats the surface even better.
Type:
Grant
Filed:
November 18, 2003
Date of Patent:
June 15, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Andrea Branca, Claudio Gemmiti, Julian Ashton Plumley, David Sarro, Domenico Esposito
Abstract: 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:
Grant
Filed:
June 3, 2005
Date of Patent:
May 18, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Bryn Hird, Robin Lynn McKiernan, Edward Joseph Urankar, Janet Neton, Mattias Schmidt, Joerg Mueller
Abstract: An absorbent article comprising a topsheet with a large opening for receiving feces. The topsheet has an elastic laminate portion with y-direction elongation. The laminate portion has a first zone, a second zone and, optionally, a third zone. The zones have different degrees of maximum elongation and/or different wrinkle heights and/or densities. The zones are configured such that one or more zones are created that cause less or no pressure marks. Overall, the topsheet maintains an excellent force profile, resulting in well performing, comfortable to wear absorbent articles that provide isolation of feces away from the skin.
Abstract: This invention is directed to a process for making solid, typically particulate, water-swellable material comprising coated water-swellable, preferably hydrogel-forming polymers, which are coated with a coating agent, which is such that it does not rupture when the polymers swell in a liquid, e.g., water or saline water. Hereto, the coating agent is extensible in wet state and comprises thereto a wet-extensible material that has a wet-elongation of at least 400%, or even more preferably at least 500%, and preferably a tensile stress at break in the wet state of at least 1 MPa. Typically, the coating agent comprises thereto an elastomeric polymeric material. The invention also relates to solid (particulate) water-swellable material obtainable by the process of the invention.
Type:
Grant
Filed:
September 25, 2008
Date of Patent:
April 20, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Mattias Schmidt, Axel Meyer, Renae Dianna Fossum, Stephen Allen Goldman, Edward Joseph Urankar, Bruno Johannes Ehmsperger
Abstract: Superabsorbent polymer particles having improved surface cross-linking and their use in absorbent articles. The superabsorbent polymer particles comprise a water-absorbing resin and the reaction product of a radiation activatable surface cross-linker. The reaction product of the radiation activatable surface cross-linker is present at the surface of the superabsorbent polymer particle. The radiation activatable surface cross-linker includes at least two radiation activatable groups R, which are covalently bound to each other or to at least one spacer group S.
Abstract: An apparatus for producing an elastomeric nonwoven laminate including a plurality of elastomeric strands joined to a nonwoven web in a controlled distribution is provided. The apparatus includes an extruder for extruding a plurality of elastomeric strands onto a cooled surface of a rotating drum, which transports the strands in parallel alignment to a nip formed between two rollers rotating about parallel axis. The drum transfers the plurality of strands to the nip in a controlled distribution where it is bonded with the nonwoven. The apparatus also includes elements which automate the apparatus for creating the elastomeric nonwoven laminate.
Type:
Grant
Filed:
May 20, 2008
Date of Patent:
April 13, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Uwe Schneider, Randall Allen Myers, Christoph Johann Schmitz, Martin Geoffrey Scaife