Patents by Inventor Shou-Lu G. Wang

Shou-Lu G. Wang 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).

  • Publication number: 20220314576
    Abstract: A composite fabric includes a nonwoven fabric layer having non-bonded areas and a structured film layer discontinuously bonded to the nonwoven fabric layer. The discontinuously bonded nonwoven fabric layer and the structured film layer share an overlapping area with at least one set of coincident bond sites. The discontinuously bonded nonwoven fabric does not have another bonding pattern in the overlapping area distinct from the at least one set of coincident bond sites. A method of forming a composite fabric is also described. The method includes forming a fiber layer including a mat of at least partially unconsolidated fibers, positioning a structured film layer and the fiber layer such that they overlap, and discontinuously bonding the mat into a discontinuously bonded nonwoven fabric while simultaneously bonding the structured film layer to the nonwoven fabric layer. An apparatus for forming a composite fabric is also described.
    Type: Application
    Filed: June 14, 2022
    Publication date: October 6, 2022
    Inventors: Thomas J. Gilbert, Shou-Lu G. Wang, Neelakandan Chandrasekaran, Todd L. Nelson, Stanley Rendon, Mark A. Peltier, Michael R. Berrigan, Jerald W. Hall, JR., Stephen M. Sanocki, Daniel E. Johnson, Bernard G. Rolstad, Ibrahim S. Gunes, Jayant Chakravarty
  • Patent number: 10779618
    Abstract: A sheet of loop material having utility as the landing zone in the manufacture of, e.g. disposable diapers and having excellent properties and an exceptionally low basis weight. Methods and apparatus for forming the sheet of loop material are also disclosed.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: September 22, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Michael R. Gorman, Thomas P. Besonen, Abbi G. Johnson, Shou-Lu G. Wang
  • Publication number: 20190360135
    Abstract: A web of nonwoven fabric suitable for, e.g., the loop portion of a hook-and-loop fastening system. The method for making this material relies on differential shrinkage of different layers to cause the loops to self-form. The method is robust and simpler than that previously used for similar constructions.
    Type: Application
    Filed: February 9, 2018
    Publication date: November 28, 2019
    Inventors: Michael R. Berrigan, Zackary J. Becker, Daniel E. Johnson, Jimmy M. Le, John D. Stelter, Shou-Lu G. Wang, Robert C. Etter
  • Publication number: 20190200712
    Abstract: A sheet of loop material having utility as the landing zone in the manufacture of, e.g. disposable diapers and having excellent properties and an exceptionally low basis weight. Methods and apparatus for forming the sheet of loop material are also disclosed.
    Type: Application
    Filed: August 7, 2017
    Publication date: July 4, 2019
    Inventors: Michael R. Gorman, Thomas P. Besonen, Abbi G. Johnson, Shou-Lu G. Wang
  • Publication number: 20180222143
    Abstract: A composite fabric includes a nonwoven fabric layer having non-bonded areas and a structured film layer discontinuously bonded to the nonwoven fabric layer. The discontinuously bonded nonwoven fabric layer and the structured film layer share an overlapping area with at least one set of coincident bond sites. The discontinuously bonded nonwoven fabric does not have another bonding pattern in the overlapping area distinct from the at least one set of coincident bond sites. A method of forming a composite fabric is also described. The method includes forming a fiber layer including a mat of at least partially unconsolidated fibers, positioning a structured film layer and the fiber layer such that they overlap, and discontinuously bonding the mat into a discontinuously bonded nonwoven fabric while simultaneously bonding the structured film layer to the nonwoven fabric layer. An apparatus for forming a composite fabric is also described.
    Type: Application
    Filed: August 10, 2016
    Publication date: August 9, 2018
    Inventors: Thomas J. Gilbert, Shou-Lu G. Wang, Neelakandan Chandrasekaran, Todd L. Nelson, Stanley Rendon, Mark A. Peltier, Michael R. Berrigan, Jerald W. Hall, Jr., Stephen M. Sanocki, Daniel E. Johnson, Bernard G. Rolstad, Ibrahim S. Gunes, Jayant Chakravarty
  • Publication number: 20170202318
    Abstract: Problem: The present invention provides a surface fastener loop member, sanitary article, and diaper that have favorable flexibility, engaging strength, and printing properties, and that can be manufactured at low cost. Resolution: A loop member for a surface fastener, containing a loop layer and a base material layer; wherein the loop layer comprises a short fiber nonwoven material; the base material layer comprises a short fiber nonwoven material, and is calendared; the ratio of the average fiber fineness of the fibers in the loop layer and the average fiber fineness of the fibers in the base material layer as expressed by [average fiber fineness of fibers in the loop layer]/[average fiber fineness of fibers in the base material layer] is 1.5 to 30, and the thickness of the base material layer is 15 ?m to 100 ?m.
    Type: Application
    Filed: July 6, 2015
    Publication date: July 20, 2017
    Inventors: Kenichiro Morishita, Shou-Lu G. Wang
  • Publication number: 20160302534
    Abstract: Loop components for hook-and-loop fasteners and methods of making the same. The loop components comprise single-layer nonwoven webs having a first side, a second side opposite the first side and a thickness therebetween. The fibers of the nonwoven webs are partially fused on the first side to create a skin layer. The nonwoven webs have a basis weight ranging from 20 gsm to 50 gsm and a pressure drop index ranging from 40 to 100.
    Type: Application
    Filed: November 10, 2014
    Publication date: October 20, 2016
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Zhiqun Zhang, Ryan M. Luepke, Michael R. Gorman, Shou-Lu G. Wang
  • Publication number: 20110256338
    Abstract: A film, and method of producing, wherein the film (4) comprises crystalline polylactide, wherein the film is continuous and has an embossed, structured surface (5,6) comprising structure (s) in the form of a negative imprint of a tool roll structured surface, and function wherein the structure (s) of the embossed, structured surface are retained upon heating the film of up to 130° C.
    Type: Application
    Filed: December 22, 2009
    Publication date: October 20, 2011
    Inventors: Ronald W. Ausen, Stephen W. Bany, Joan C. Fretag, Jay M. Jennen, Eugene G. Joseph, Sasha B. Myers, Shou-Lu G. Wang
  • Publication number: 20080035272
    Abstract: This invention relates to a loop fabric laminate bearing a graphic image and methods for printing such images on the back surface of the backing layer of the laminate. The loop fabric laminate is characterized by the presence of recessed and unrecessed areas in the backing layer, and the presence of ink deposited and retained in place in the recessed and unrecessed areas, with void defects of greater than 0.5 mm in largest dimension being present at a frequency of less than one void defect per square centimeter of printed area.
    Type: Application
    Filed: August 10, 2006
    Publication date: February 14, 2008
    Inventors: Michael W. Mills, Shou-Lu G. Wang
  • Publication number: 20040180197
    Abstract: Closure systems containing self-adhering adhesives that include: at least two opposing closure elements at (e.g., separate locations on an article such as a disposable diaper) that are capable of overlapping to form an adhesive closure; and a self-adhering adhesive composition on each of the closure elements; wherein the self-adhering adhesive composition includes: 50 wt-% to 90 wt-% of an adhesive elastomeric material comprising a nonpolar elastomer; 10 wt-% to 40 wt-% of a wax; 0 to less than 5 wt-% of a plasticizer; wherein the percentages are based on the total weight of the adhesive elastomeric material plus wax plus optional plasticizer, and wherein at least one of the following statements is true: the self-adhering adhesive composition has a T-peel of at least 100 grams per cm; or the wax has a molecular weight of less than 1500.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 16, 2004
    Inventors: Albert I. Everaerts, Jing Jing Ma, Shou-Lu G. Wang
  • Patent number: 6531207
    Abstract: There is provided an extensible elastic tab designed to be adhered to the edge of an article, formed using a coextruded elastic film comprising at least one elastic layer and at least one second layer on at least a first face of the elastic layer with at least one face of the coextruded elastic film attached to at least a partially extensible nonwoven layer. The partially expandable, or extensible nonwoven layer has at least one first portion with limited extensibility in a first direction and at least one second inextensible portion in the first direction. The extensible elastic tab when stretched to the extension limit of the first portion or portions in the first direction will elastically recover at least 1.0 cm, preferably at least 2 cm providing an elastic tab having a Useful Stretch Ratio (as defined in the Examples) of at least 30 percent.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: March 11, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Bradley W. Eaton, Nedlin B. Johnson, Michael R. Gorman, Shou-Lu G. Wang
  • Patent number: 6159584
    Abstract: There is provided an extensible elastic tab designed to be adhered to the edge of an article, formed using a coextruded elastic film comprising at least one elastic layer and at least one second layer on at least a first face of the elastic layer with at least one face of the coextruded elastic film attached to at least a partially extensible nonwoven layer. The partially expandable, or extensible nonwoven layer has at least one first portion with limited extensibility in a first direction and at least one second inextensible portion in the first direction. The extensible elastic tab when stretched to the extension limit of the first portion or portions in the first direction will elastically recover at least 1.0 cm, preferably at least 2 cm providing an elastic tab having a Useful Stretch Ratio (as defined in the Examples) of at least 30 percent.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: December 12, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Bradley W. Eaton, Nedlin B. Johnson, Michael R. Gorman, Shou-Lu G. Wang
  • Patent number: 6074436
    Abstract: A method for imparting soil resistance to unscoured carpets, and a carpet treated in accordance with the method, are provided. In accordance with the method, a substrate comprising unscoured carpet fibers is treated with a salt of a polycarboxylic acid. The treated substrate is found to have enhanced water and oil repellency in both heat cured and room temperature drying conditions.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: June 13, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Shou-Lu G. Wang, Irvin F. Dunsmore, Robert F. Kamrath, John C. Chang
  • Patent number: 5908663
    Abstract: A method for treating carpets is provided which obviates the need for scouring. In accordance with the method, an unscoured carpet is treated topically, and by means of a low wet pickup method, with a solution comprising particles of silica or a similar inorganic additive and a fluorochemical or other optional organic additive. Carpets treated in accordance with this method are found to have excellent soil resistance properties which do not decrease noticeably with subsequent wear or cleaning. Furthermore, since the method involves a low wet pickup, the required drying times are significantly reduced as compared to conventional aqueous bath immersion methods.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: June 1, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Shou-Lu G. Wang, Lori P. Engle, Steven J. Hamrock, Dong-Wei Zhu, Thomas E. Wood, Steven J. Martin
  • Patent number: 5756181
    Abstract: A method for imparting soil resistance to unscoured carpets, and a carpet treated in accordance with the method, are provided. In accordance with the method, a substrate comprising unscoured carpet fibers is treated with the ammonium salt of a polycarboxylic acid, such as an ammonium salt of a hydrolyzed styrene/maleic anhydride copolymer. The treated substrate is found to have enhanced water and oil repellency in both heat cured and room temperature drying conditions.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: May 26, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Shou-Lu G. Wang, Irvin F. Dunsmore, Robert F. Kamrath, John C. Chang
  • Patent number: 5744201
    Abstract: A method for imparting soil resistance to unscoured carpets, and a carpet treated in accordance with the method, are provided. In accordance with the method, a substrate comprising unscoured carpet fibers is treated with the ammonium salt of a polycarboxylic acid, such as an ammonium salt of a hydrolyzed styrene/maleic anhydride copolymer. The treated substrate is found to have enhanced water and oil repellency in both heat cured and room temperature drying conditions.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: April 28, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John C. Chang, Shou-Lu G. Wang, Irvin F. Dunsmore, Robert F. Kamrath
  • Patent number: 5738687
    Abstract: A method for imparting soil resistance to unscoured carpets, and a carpet treated in accordance with the method, are provided. In accordance with the method, a substrate comprising unscoured carpet fibers is treated with the ammonium salt of a polycarboxylic acid, such as an ammonium salt of a hydrolyzed styrene/maleic anhydride copolymer. The treated substrate is found to have enhanced water and oil repellency in both heat cured and room temperature drying conditions.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: April 14, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert F. Kamrath, John C. Chang, Shou-Lu G. Wang, Irvin F. Dunsmore
  • Patent number: 5074883
    Abstract: A method for imparting to fibrous polyamide materials stain resistance to acid colorants is provided. The method comprises (a) applying by immersion or padding of said material or applying to the fiber during spinning thereof 0.01 to 0.3 weight percent based on the weight of said polyamide material of a stain resist agent and (b) applying sufficient stain resist agent by foam application to provide a stain resistance rating of at least about 5.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: December 24, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Shou-Lu G. Wang