Patents by Inventor Kevin Stafeil

Kevin Stafeil 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).

  • Patent number: 11912906
    Abstract: A hot melt adhesive composed of an ethylene vinyl acetate copolymer, a hydrogenated styrenic block copolymer, a tackifying resin, and a liquid plasticizer. The preferred ethylene vinyl acetate copolymer has a vinyl acetate content between 8 and 28 percent by weight, and the preferred hydrogenated styrenic block copolymer is a styrene-ethylene-butylene-styrene having about 30% styrene content and essentially no diblock. The hot melt gives excellent peel strength when used as a construction adhesive for disposable nonwoven articles. It can also be formulated to exhibit very low bleed through and blocking characteristics when used on low basis weight nonwoven fabrics.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: February 27, 2024
    Assignee: Bostik, Inc.
    Inventors: Kevin Stafeil, Kathleen M Farris
  • Patent number: 11643578
    Abstract: A hot melt adhesive composed of a styrene-butadiene-styrene polymer having a relatively high diblock content and styrene content, a second styrenic block copolymer having a lower diblock content than the styrene-butadiene-styrene polymer, which is preferably a styrene-isoprene-styrene polymer, together with tackifying resin, and liquid plasticizer. The preferred styrene-butadiene-styrene polymer contains a styrene content of greater than 30 percent and a diblock content greater than 30 percent by weight. When used in conjunction with a styrene-isoprene-styrene polymer, the hot melt composition provides improved peel strength at 5° C., and when used as a pad attachment positioning adhesive, did not exhibit adhesive transfer at 40° C.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: May 9, 2023
    Assignee: BOSTIK, INC.
    Inventors: Kevin Stafeil, Kelley Gerschke, Kyle Gerarden
  • Patent number: 10864138
    Abstract: A label includes (a) a base segment, (b) a first lobe segment comprising at least one protruding member and a pull tab, (c) a second lobe segment comprising at least one protruding member, (d) a first cutout segment, (e) a second cutout segment, (f) a first perforation forming a boundary between the base and first lobe segments, (g) a second perforation forming a boundary between the base and second lobe segments, and (h) a third perforation forming a boundary between the first lobe segment and its at least one protruding member. The first and second lobe segments are connected to the base segment and opposed to one another. The first and second cutout segments separate the at least one protruding member of the first and second lobe segments, respectively, from the base segment. The label comprises at least (A) a facesheet layer and (B) an adhesive layer.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: December 15, 2020
    Assignee: BRADY WORLDWIDE, INC.
    Inventor: Kevin Stafeil
  • Patent number: 10815398
    Abstract: A hot melt adhesive that is composed of a metallocene catalyzed polyethylene polymer, a hydrogenated styrenic block copolymer, a tackifying resin, and a solid plasticizer. The preferred polyethylene polymer is an ethylene-octene copolymer, and the preferred styrenic block copolymer is a styrene-ethylene-butylene-styrene having less than 30% styrene content. The preferred solid plasticizer is either glycerol tribenzoate or 1,4-cyclohexane dimethanol dibenzoate.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: October 27, 2020
    Assignee: BOSTIK, INC.
    Inventors: Michael D. Vitrano, Kevin Stafeil, Tsebaot Hailemichael
  • Publication number: 20180303712
    Abstract: A label includes (a) a base segment, (b) a first lobe segment comprising at least one protruding member and a pull tab, (c) a second lobe segment comprising at least one protruding member, (d) a first cutout segment, (e) a second cutout segment, (f) a first perforation forming a boundary between the base and first lobe segments, (g) a second perforation forming a boundary between the base and second lobe segments, and (h) a third perforation forming a boundary between the first lobe segment and its at least one protruding member. The first and second lobe segments are connected to the base segment and opposed to one another. The first and second cutout segments separate the at least one protruding member of the first and second lobe segments, respectively, from the base segment. The label comprises at least (A) a facesheet layer and (B) an adhesive layer.
    Type: Application
    Filed: March 22, 2018
    Publication date: October 25, 2018
    Inventor: Kevin Stafeil
  • Publication number: 20150203725
    Abstract: A hot melt adhesive composed of a styrene-butadiene-styrene polymer having a relatively high diblock content and styrene content, a second styrenic block copolymer having a lower diblock content than the styrene-butadiene-styrene polymer, which is preferably a styrene-isoprene-styrene polymer, together with tackifying resin, and liquid plasticizer. The preferred styrene-butadiene-styrene polymer contains a styrene content of greater than 30 percent and a diblock content greater than 30 percent by weight. When used in conjunction with a styrene-isoprene-styrene polymer, the hot melt composition provides improved peel strength at 5° C., and when used as a pad attachment positioning adhesive, did not exhibit adhesive transfer at 40° C.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 23, 2015
    Applicant: BOSTIK, INC.
    Inventors: Kevin Stafeil, Kelley Gerschke, Kyle Gerarden
  • Publication number: 20150017868
    Abstract: A hot melt adhesive composed of an ethylene vinyl acetate copolymer, a hydrogenated styrenic block copolymer, a tackifying resin, and a liquid plasticizer. The preferred ethylene vinyl acetate copolymer has a vinyl acetate content between 8 and 28 percent by weight, and the preferred hydrogenated styrenic block copolymer is a styrene-ethylene-butylene-styrene having about 30% styrene content and essentially no diblock. The hot melt gives excellent peel strength when used as a construction adhesive for disposable nonwoven articles. It can also be formulated to exhibit very low bleed through and blocking characteristics when used on low basis weight nonwoven fabrics.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 15, 2015
    Applicant: Bostik, Inc.
    Inventors: Kevin Stafeil, Kathleen M. Farris
  • Publication number: 20120259050
    Abstract: A hot melt adhesive that is composed of a metallocene catalyzed polyethylene polymer, a hydrogenated styrenic block copolymer, a tackifying resin, and a solid plasticizer. The preferred polyethylene polymer is an ethylene-octene copolymer, and the preferred styrenic block copolymer is a styrene-ethylene-butylene-styrene having less than 30% styrene content. The preferred solid plasticizer is either glycerol tribenzoate or 1,4-cyclohexane dimethanol dibenzoate.
    Type: Application
    Filed: April 9, 2012
    Publication date: October 11, 2012
    Applicant: BOSTIK, INC.
    Inventors: Michael D. Vitrano, Kevin Stafeil, Tsebaot Hailemichael
  • Publication number: 20120165455
    Abstract: A hot melt adhesive formulation utilizing a blend of polymers which include a polyolefin polymer and an olefinic block copolymer (OBC). The hot melt formulations demonstrate improved hot tack, adhesion, and bond line flexibility over other traditional hot melt adhesives.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: BOSTIK, INC.
    Inventors: Michael Vitrano, Kevin Stafeil
  • Patent number: D833530
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: November 13, 2018
    Assignee: Brady Worldwide, Inc.
    Inventor: Kevin Stafeil