Patents by Inventor Birgit WIRTZ
Birgit WIRTZ has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10716713Abstract: An absorbent core for use in an absorbent article, the absorbent core including a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate on a deposition area and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles, and a second absorbent layer comprising a second substrate and a mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers deposited on the second substrate. The first and second absorbent layers are combined together such that at least a portion of the fibrous thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer.Type: GrantFiled: September 15, 2016Date of Patent: July 21, 2020Assignee: The Procter & Gamble CompanyInventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
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Patent number: 10653570Abstract: An absorbent article including a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core includes: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheet thaType: GrantFiled: December 16, 2016Date of Patent: May 19, 2020Assignee: The Procter & Gamble CompanyInventors: Birgit Wirtz, Walter van der Klugt, Rodrigo Rosati, Ernesto Gabriel Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
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Patent number: 10517776Abstract: An absorbent core for disposable absorbent articles comprising absorbent material having a basis weight that varies across the absorbent core is provided.Type: GrantFiled: September 21, 2015Date of Patent: December 31, 2019Assignee: The Procter & Gamble CompanyInventors: Peter Armstrong Ostle, Harald Hermann Hundorf, Birgit Wirtz, Thorsten Frings, Bruno Johannes Ehrnsperger, Maike Thomann
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Publication number: 20170252232Abstract: The invention relates to absorbent cores having high stripes of absorbent material separated by gaps.Type: ApplicationFiled: May 22, 2017Publication date: September 7, 2017Inventors: Maike THOMANN, Bruno Johannes EHRNSPERGER, Alessandra MASSA, Manuel LASO, Birgit WIRTZ, Roland ENGEL
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Patent number: 9687393Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.Type: GrantFiled: June 12, 2014Date of Patent: June 27, 2017Assignee: The Procter & Gamble CompanyInventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Manuel Laso, Birgit Wirtz, Roland Engel
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Publication number: 20170095380Abstract: An absorbent article including a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core includes: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheet thaType: ApplicationFiled: December 16, 2016Publication date: April 6, 2017Inventors: Birgit WIRTZ, Walter van der KLUGT, Rodrigo ROSATI, Ernesto Gabriel BIANCHI, Aniruddha CHATTERJEE, Carsten Heinrich KREUZER, Holger BERUDA
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Patent number: 9554951Abstract: An absorbent article comprising a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core comprises: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheet tType: GrantFiled: June 28, 2013Date of Patent: January 31, 2017Assignee: The Procter & Gamble CompanyInventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
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Publication number: 20170000654Abstract: An absorbent core for use in an absorbent article, the absorbent core including a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate on a deposition area and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles, and a second absorbent layer comprising a second substrate and a mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers deposited on the second substrate. The first and second absorbent layers are combined together such that at least a portion of the fibrous thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer.Type: ApplicationFiled: September 15, 2016Publication date: January 5, 2017Inventors: Birgit WIRTZ, Walter Pieter Hendrik Laurentius VAN DER KLUGT, Rodrigo ROSATI, Ernesto G. BIANCHI, Aniruddha CHATTERJEE, Carsten Heinrich KREUZER, Holger BERUDA
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Patent number: 9486371Abstract: An absorbent core for use in an absorbent article, the absorbent core including a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate on a deposition area and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles, and a second absorbent layer comprising a second substrate and a mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers deposited on the second substrate. The first and second absorbent layers are combined together such that at least a portion of the fibrous thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer.Type: GrantFiled: June 28, 2013Date of Patent: November 8, 2016Assignee: The Procter & Gamble CompanyInventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
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Publication number: 20160213533Abstract: An absorbent core includes a first carrier substrate and a second carrier substrate; a discontinuous layer of superabsorbent polymer material disposed between the first and second carrier substrates. The superabsorbent polymer material may be disposed in a plurality of superabsorbent material stripes. Two of the stripes are separated by an interstice. The interstice has little or no superabsorbent polymer material and extends from the first carrier substrate to the second carrier substrate.Type: ApplicationFiled: February 11, 2016Publication date: July 28, 2016Inventors: Maike THOMANN, Bruno Johannes EHRNSPERGER, Alessandra MASSA, Manuel LASO, Birgit WIRTZ, Roland ENGEL
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Patent number: 9289334Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.Type: GrantFiled: June 8, 2012Date of Patent: March 22, 2016Assignee: The Procter & Gamble CompanyInventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Manuel Laso, Birgit Wirtz, Roland Engel
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Publication number: 20160008187Abstract: An absorbent core for disposable absorbent articles comprising absorbent material having a basis weight that varies across the absorbent core is provided.Type: ApplicationFiled: September 21, 2015Publication date: January 14, 2016Inventors: Peter ARMSTRONG-OSTLE, Harald Hermann HUNDORF, Birgit WIRTZ, Thorsten FRINGS, Bruno Johannes EHRNSPERGER, Maike THOMANN
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Publication number: 20140296810Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.Type: ApplicationFiled: June 12, 2014Publication date: October 2, 2014Inventors: Maike THOMANN, Bruno Johannes EHRNSPERGER, Alessandra MASSA, Manuel LASO, Birgit WIRTZ, Roland ENGEL
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Patent number: 8791319Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.Type: GrantFiled: June 8, 2012Date of Patent: July 29, 2014Assignee: The Procter & Gamble CompanyInventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Manuel Laso, Birgit Wirtz, Roland Engel
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Publication number: 20140005623Abstract: An absorbent article comprising a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core comprises: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheeType: ApplicationFiled: June 28, 2013Publication date: January 2, 2014Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
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Publication number: 20140005625Abstract: An absorbent core for use in an absorbent article, the absorbent core including a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate on a deposition area and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles, and a second absorbent layer comprising a second substrate and a mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers deposited on the second substrate. The first and second absorbent layers are combined together such that at least a portion of the fibrous thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer.Type: ApplicationFiled: June 28, 2013Publication date: January 2, 2014Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
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Publication number: 20140005622Abstract: An absorbent article including a wearer-facing topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, characterized in that the absorbent core includes: a first absorbent layer comprising a first substrate, a layer of first superabsorbent polymer particles deposited on the first substrate, and a fibrous layer of thermoplastic adhesive material covering the layer of first superabsorbent polymer particles; a second absorbent layer, the second absorbent layer comprising a second substrate and a mixed layer deposited on the second substrate, the mixed layer comprising a mixture of second superabsorbent particles and cellulosic fibers, the first absorbent layer and the second absorbent layer being combined together such that at least a portion of the fibrous layer of thermoplastic adhesive material of the first absorbent layer contacts at least a portion of the mixed layer of the second absorbent layer, and wherein the first absorbent layer is placed closer to the topsheet thaType: ApplicationFiled: June 28, 2013Publication date: January 2, 2014Inventors: Birgit Wirtz, Walter Pieter Hendrik Laurentius Van Der Klugt, Rodrigo Rosati, Ernesto G. Bianchi, Aniruddha Chatterjee, Carsten Heinrich Kreuzer, Holger Beruda
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Patent number: 8438704Abstract: The present invention refers to a process of making a fibrous structure, wherein roughly graded material is provided to rotating, apertured drums. The drums have at least one needle roll in their inside. The roughly graded material is agitated inside the drums, whereby fibers or small fiber clusters are separated from each other. These fibers and small fiber clusters are flung through the apertures to the outside of the drum, where they are directed onto a foraminous carrier to form a fibrous structure. The fibrous structures are especially useful in absorbent articles.Type: GrantFiled: September 17, 2010Date of Patent: May 14, 2013Assignee: The Procter & Gamble CompanyInventors: Birgit Wirtz, Thomas Ludwig Woschnik, Silvio W. Miccio
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Publication number: 20120316524Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.Type: ApplicationFiled: June 8, 2012Publication date: December 13, 2012Inventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Prof. Manuel Laso, Birgit Wirtz, Roland Engel
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Publication number: 20120316525Abstract: The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.Type: ApplicationFiled: June 8, 2012Publication date: December 13, 2012Inventors: Maike Thomann, Bruno Johannes Ehrnsperger, Alessandra Massa, Manuel Laso, Birgit Wirtz, Roland Engel