Patents by Inventor George D. Wofford
George D. Wofford 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: 8409697Abstract: A multilayer, heat-shrinkable film generally includes at least one bulk layer and a microlayer section comprising at least 10 microlayers, each of which has a thickness ranging from about 0.001 to 0.015 mil. The ratio of the thickness of any of the microlayers to the thickness of the bulk layer is at least about 1:2. The film has a total free shrink (ASTM D2732-03) of at least about 10% at 200° F.Type: GrantFiled: June 28, 2012Date of Patent: April 2, 2013Assignee: Cryovac, Inc.Inventors: Rafizi Ramli, Larry Bikle McAllister, Anton L. Timmons, Bradford E. Webster, John R. Wolf, Christopher Brown, George D. Wofford
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Publication number: 20120270024Abstract: A multilayer, heat-shrinkable film generally includes at least one bulk layer and a microlayer section comprising at least 10 microlayers, each of which has a thickness ranging from about 0.001 to 0.015 mil. The ratio of the thickness of any of the microlayers to the thickness of the bulk layer is at least about 1:2. The film has a total free shrink (ASTM D2732-03) of at least about 10% at 200° F.Type: ApplicationFiled: June 28, 2012Publication date: October 25, 2012Applicant: CRYOVAC, INC.Inventors: Rafizi Ramli, Larry Bikle McAllister, Anton L. Timmons, Bradford E. Webster, John R. Wolf, Christopher Brown, George D. Wofford
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Patent number: 8241736Abstract: A multilayer, heat-shrinkable film generally includes at least one bulk layer and a microlayer section comprising a plurality of microlayers. The ratio of the thickness of any of the microlayers to the thickness of the bulk layer ranges from about 1:2 to about 1:40.Type: GrantFiled: November 7, 2011Date of Patent: August 14, 2012Assignee: Cryovac, Inc.Inventors: Rafizi Ramli, Larry Bikle McAllister, Anton L. Timmons, Bradford E. Webster, John R. Wolf, Christopher L. Brown, George D. Wofford
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Publication number: 20120052277Abstract: A multilayer, heat-shrinkable film generally includes at least one bulk layer and a microlayer section comprising a plurality of microlayers. The ratio of the thickness of any of the microlayers to the thickness of the bulk layer ranges from about 1:2 to about 1:40.Type: ApplicationFiled: November 7, 2011Publication date: March 1, 2012Applicant: CRYOVAC, INC.Inventors: Rafizi Ramli, Larry Bikle McAllister, Anton L. Timmons, Bradford E. Webster, John R. Wolf, Christopher Brown, George D. Wofford
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Patent number: 8080310Abstract: A multilayer, heat-shrinkable film generally includes at least one bulk layer and a microlayer section comprising a plurality of microlayers. The ratio of the thickness of any of the microlayers to the thickness of the bulk layer ranges from about 1:2 to about 1:40.Type: GrantFiled: July 1, 2011Date of Patent: December 20, 2011Assignee: Cryovac, Inc.Inventors: Rafizi Ramli, Anton L. Timmons, Bradford E. Webster, John R. Wolf, Larry Bikle McAllister, Christopher Brown, George D Wofford
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Publication number: 20110260354Abstract: A multilayer, heat-shrinkable film generally includes at least one bulk layer and a microlayer section comprising a plurality of microlayers. The ratio of the thickness of any of the microlayers to the thickness of the bulk layer ranges from about 1:2 to about 1:40.Type: ApplicationFiled: July 1, 2011Publication date: October 27, 2011Applicant: CRYOVAC, INC.Inventors: Rafizi Ramli, Larry Bikle McAllister, Anton L. Timmons, Bradford E. Webster, John R. Wolf, Christopher Brown, George D. Wofford
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Patent number: 8021759Abstract: The present invention is directed to a heat-shrinkable, thermoplastic film or bag which contains at least one homogeneous ethylene alpha-olefin copolymer having a density of at least 0.90 g/cc. Oriented films made in accordance with the present invention exhibit improved optics and improved impact resistance. A homogeneous ethylene alpha-olefin may be present in a monolayer film either alone or in a blend or may be included in one or more layers of a multilayer film in accordance with the present invention.Type: GrantFiled: December 22, 1997Date of Patent: September 20, 2011Assignee: Cryovac Inc.Inventors: Kelly R. Ahlgren, Robert Babrowicz, Solomon Bekele, Blaine C. Childress, Marvin R. Havens, Vincent W. Herran, Ronald D. Moffitt, Gautam P. Shah, George D. Wofford
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Patent number: 8017231Abstract: The present invention is directed to a heat-shrinkable, thermoplastic film or bag which contains at least one homogeneous ethylene alpha-olefin copolymer with at least some limited long chain branching. Oriented films made in accordance with the present invention exhibit improved processability as well as improved physical properties such as excellent optics and impact resistance. A homogeneous ethylene alpha-olefin with long chain branching may be present in a monolayer film either alone or in a blend or may be included in one or more layers of a multilayer film in accordance with the present invention.Type: GrantFiled: May 30, 2000Date of Patent: September 13, 2011Assignee: Cryovac, Inc.Inventors: Kelly R. Ahlgren, Robert Babrowicz, Solomon Bekele, Blaine C. Childress, Marvin R. Havens, Ronald D. Moffitt, Gautam P. Shah, George D. Wofford
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Patent number: 8012572Abstract: A multilayer, heat-shrinkable film generally includes at least one bulk layer and a microlayer section comprising a plurality of microlayers. The ratio of the thickness of any of the microlayers to the thickness of the bulk layer ranges from about 1:2 to about 1:40.Type: GrantFiled: March 6, 2009Date of Patent: September 6, 2011Assignee: Cryovac, Inc.Inventors: Rafizi Ramli, Larry Bikle McAllister, Anton L. Timmons, Bradford E. Webster, John R. Wolf, Christopher Brown, George D. Wofford
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Publication number: 20100227136Abstract: A multilayer, heat-shrinkable film generally includes at least one bulk layer and a microlayer section comprising a plurality of microlayers. The ratio of the thickness of any of the microlayers to the thickness of the bulk layer ranges from about 1:2 to about 1:40.Type: ApplicationFiled: March 6, 2009Publication date: September 9, 2010Inventors: Rafizi Ramli, Larry Bikle McAllister, Anton L. Timmons, Bradford E. Webster, John R. Wolf, Christopher Brown, George D. Wofford
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Patent number: 7588830Abstract: The present invention is directed to a heat-shrinkable, thermoplastic film or bag which contains at least one homogeneous ethylene alpha-olefin copolymer having a density of at least 0.90 g/cc. Oriented films made in accordance with the present invention exhibit improved optics and improved impact resistance. A homogeneous ethylene alpha-olefin may be present in a monolayer film either alone or in a blend or may be included in one or more layers of a multilayer film in accordance with the present invention.Type: GrantFiled: February 21, 2003Date of Patent: September 15, 2009Assignee: Cryovac, Inc.Inventors: Kelly R. Ahlgren, Robert Babrowicz, Solomon Bekele, Blaine C. Childress, Marvin R. Havens, Ronald D. Moffitt, Gautam P. Shah, George D. Wofford
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Patent number: 7207157Abstract: A heat-shrinkable multilayer film comprises (A) a first layer, which is an outer layer, and which comprises polyolefin; (B) a second layer comprising at least one member selected from the group consisting of polyolefin, polystyrene, and polyurethane, wherein the second layer has a thickness of from about 10 to 50 percent, based on a total film thickness; (C) a third layer comprising a polyamide having a melting point of 160° C. and below; and (D) a fourth layer, which is an outer layer, the fourth layer comprising polyester. The first layer preferably serves as a seal layer in a heat-shrinkable bag. The third layer provides enhanced orientability of the tape from which the film is formed, thereby providing improved total free shrink and lower shrink temperature. The third layer also provides greater optical clarity and permits the presence of a thicker polyamide layer, thereby increasing impact strength and improving the O2-barrier of the film.Type: GrantFiled: April 27, 2001Date of Patent: April 24, 2007Assignee: Cryovac, Inc.Inventors: John R. Wolf, Ram K. Ramesh, George D. Wofford
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Patent number: 7200977Abstract: A heat-shrinkable multilayer film comprises (A) a first layer, which is an outer layer, and which comprises polyolefin; (B) a second layer comprising at least one member selected from the group consisting of polyolefin, polystyrene, and polyurethane; (C) a third layer comprising at least one member selected from the group consisting of amorphous polyester and polyester having a melting point of from about 130° C. to about 260° C.; (D) a fourth layer, which is an outer layer, the fourth layer comprising at least one member selected from the group consisting of polyester, polyamide and polyurethane. The first layer preferably serves as a seal layer in a heat-shrinkable bag. The third layer provides enhanced impact strength, optics, grease-resistance, and free-shrink of the film, and renders the tape more easily orientable.Type: GrantFiled: July 23, 2003Date of Patent: April 10, 2007Assignee: Cryovac, Inc.Inventors: Ram K. Ramesh, John R. Wolf, George D. Wofford
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Patent number: 6884480Abstract: Film and sheet materials, and articles made therefrom, such as bags, pouches, trays, etc., comprise one or more layers of homogeneous alpha-olefin/vinyl aromatic copolymer, preferably an ethylene/styrene copolymer. The alpha-olefin/vinyl aromatic copolymer has properties which can provide a desired performance characteristics such as impact resistance, printability, RF sealability, free shrink, optics, high permeability, etc. The homogeneous alpha-olefin/vinyl aromatic copolymer may be present in a monolayer film, either alone or in a blend, or may be included in one or more layers of a multilayer film. Also included is a multilayer thermoformable article comprising a web having a film of such alpha-olefin/vinyl aromatic copolymers thereto.Type: GrantFiled: September 11, 2001Date of Patent: April 26, 2005Assignee: Cryovac, Inc.Inventors: John G. Bradfute, Blaine C. Childress, Marvin R. Havens, C. Michael Lulham, Ronald D. Moffitt, Martindale Nelson, Lawrence R. Norpoth, William P. Roberts, Gloria G. Toney, George D. Wofford
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Publication number: 20040065052Abstract: A heat-shrinkable multilayer film comprises (A) a first layer, which is an outer layer, and which comprises polyolefin; (B) a second layer comprising at least one member selected from the group consisting of polyolefin, polystyrene, and polyurethane; (C) a third layer comprising at least one member selected from the group consisting of amorphous polyester and polyester having a melting point of from about 130° C. to about 260° C.; (D) a fourth layer, which is an outer layer, the fourth layer comprising at least one member selected from the group consisting of polyester, polyamide and polyurethane. The first layer preferably serves as a seal layer in a heat-shrinkable bag. The third layer provides enhanced impact strength, optics, grease-resistance, and free-shrink of the film, and renders the tape more easily orientable.Type: ApplicationFiled: July 23, 2003Publication date: April 8, 2004Inventors: Ram K. Ramesh, John R. Wolf, George D. Wofford
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Publication number: 20040009314Abstract: The present invention is directed to a heat-shrinkable, thermoplastic film or bag which contains at least one homogeneous ethylene alpha-olefin copolymer having a density of at least 0.90 g/cc. Oriented films made in accordance with the present invention exhibit improved optics and improved impact resistance. A homogeneous ethylene alpha-olefin may be present in a monolayer film either alone or in a blend or may be included in one or more layers of a multilayer film in accordance with the present invention.Type: ApplicationFiled: February 21, 2003Publication date: January 15, 2004Inventors: Kelly R. Ahlgren, Robert Babrowicz, Solomon Bekele, Blaine C. Childress, Marvin R. Havens, Ronald D. Moffitt, Gautam P. Shah, George D. Wofford
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Patent number: 6610392Abstract: A heat-shrinkable multilayer film comprises (A) a first layer, which is an outer layer, and which comprises polyolefin; (B) a second layer comprising at least one member selected from the group consisting of polyolefin, polystyrene, and polyurethane; (C) a third layer comprising at least one member selected from the group consisting of amorphous polyester and polyester having a melting point of from about 130° C. to about 260° C.; (D) a fourth layer, which is an outer layer, the fourth layer comprising at least one member selected from the group consisting of polyester, polyamide and polyurethane. The first layer preferably serves as a seal layer in a heat-shrinkable bag. The third layer provides enhanced impact strength, optics, grease-resistance, and free-shrink of the film, and renders the tape more easily orientable.Type: GrantFiled: March 4, 1998Date of Patent: August 26, 2003Assignee: Cryovac, Inc.Inventors: Ram K. Ramesh, John R. Wolf, George D. Wofford
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Patent number: 6514583Abstract: A heat-shrinkable film containing a homogeneous ethylene/alpha-olefin copolymer has a high impact strength and a high free shrink. The film can be a monolayer film or multilayer film, with the homogeneous ethylene/alpha-olefin copolymer present alone or in a blend, and in one or more film layers. The film is especially suited for use in heat-shrinkable bags, which can be used for the packaging of various products, especially meat.Type: GrantFiled: September 17, 1997Date of Patent: February 4, 2003Assignee: Cryovac, Inc.Inventors: Kelly R. Ahlgren, Robert Babrowicz, Solomon Bekele, Blaine C. Childress, Marvin R. Havens, Vincent W. Herran, Ronald D. Moffitt, Gautam P. Shah, George D. Wofford
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Publication number: 20030012900Abstract: A heat-shrinkable multilayer film comprises (A) a first layer, which is an outer layer, and which comprises polyolefin; (B) a second layer comprising at least one member selected from the group consisting of polyolefin, polystyrene, and polyurethane, wherein the second layer has a thickness of from about 10 to 50 percent, based on a total film thickness; (C) a third layer comprising a polyamide having a melting point of 160° C. and below; and (D) a fourth layer, which is an outer layer, the fourth layer comprising polyester. The first layer preferably serves as a seal layer in a heat-shrinkable bag. The third layer provides enhanced orientability of the tape from which the film is formed, thereby providing improved total free shrink and lower shrink temperature. The third layer also provides greater optical clarity and permits the presence of a thicker polyamide layer, thereby increasing impact strength and improving the O2-barrier of the film.Type: ApplicationFiled: April 27, 2001Publication date: January 16, 2003Inventors: John R. Wolf, Ram K. Ramesh, George D. Wofford
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Patent number: 6406763Abstract: A multilayer, heat-shrinkable food packaging film useful for forming a post packaging pasteurization bag. The film includes at least three layers: 1) a first outer layer formed from a resin composition having a Vicat softening point of at least 100° C., 2) a second outer layer having one or more thermoplastic gloss materials of polyester, ethylene/alpha-olefin copolymer having a melt index of greater than 1 g/10 minutes, styrene/butadiene block copolymer, and ethylene/styrene random copolymer, and 3) one or more inner layers between the first and second outer layers. At least one of the inner layers includes an ethylene/alpha-olefin copolymer. The film has a total free shrink of at least 40% at 85° C. If the second outer layer includes polyester, then each of the inner layers of the multilayer film is devoid of a weight amount of polyamide or polyester greater than the weight amount of polyester in the second outer layer.Type: GrantFiled: December 23, 1999Date of Patent: June 18, 2002Assignee: Cryovac, Inc.Inventors: John R. Wolf, George D. Wofford, Blaine C. Childress