Patents Assigned to Winpak Films Inc.
-
Patent number: 9624019Abstract: A multilayer plastic film comprising polyethylene outer layers with inner layers of additional polyethylene adjacent to tie layers of adhesive bonded to a blended polyamide and polyvinyl alcohol core. This structure results in excellent oxygen and water barrier properties. The film can be coextruded in a blown film process that results in a durable barrier film without the sacrifice of optical properties. Film applications include, but are not limited to, food packaging such as bags, liners, pouches, shrink bags, and chubs. In certain embodiments, the film can also be used for food packaging, including packaging of meat, cheese, milk, condiments, salad dressings, or any other oxygen sensitive products.Type: GrantFiled: November 8, 2013Date of Patent: April 18, 2017Assignee: Winpak Films Inc.Inventor: Aamir Siddiqui
-
Publication number: 20140134446Abstract: A multilayer plastic film comprising polyethylene outer layers with inner layers of additional polyethylene adjacent to tie layers of adhesive bonded to a blended polyamide and polyvinyl alcohol core. This structure results in excellent oxygen and water barrier properties. The film can be coextruded in a blown film process that results in a durable barrier film without the sacrifice of optical properties. Film applications include, but are not limited to, food packaging such as bags, liners, pouches, shrink bags, and chubs. In certain embodiments, the film can also be used for food packaging, including packaging of meat, cheese, milk, condiments, salad dressings, or any other oxygen sensitive products.Type: ApplicationFiled: November 8, 2013Publication date: May 15, 2014Applicant: Winpak Films, Inc.Inventor: Aamir Siddiqui
-
Publication number: 20040041107Abstract: A radiation attenuation system is disclosed. The system includes a polymeric resin comprising a web. The system also includes a radiation attenuation material dispersed at least partially in the web. The system has a radiation transmission attenuation factor of at least about 10% of a primary 100 kVp x-ray beam. A method of making a radiation attenuation system including a radiation attenuation material dispersed at least partially in a polymeric resin is also disclosed. The method includes extruding the radiation attenuation material and the polymeric resin thereby forming an extrusion. The method also includes forming the extrusion into a web. The web has a radiation transmission attenuation factor of at least about 10% of a primary 100 kVp x-ray beam. A shield for the attenuation of radiation is also disclosed.Type: ApplicationFiled: August 7, 2003Publication date: March 4, 2004Applicants: Worldwide Innovations & Technologies, Inc., Winpak Films, Inc.Inventors: John A. Cadwalader, John Q. Zheng
-
Patent number: 6674087Abstract: A radiation attenuation system is disclosed. The system includes a polymeric resin comprising a web. The system also includes a radiation attenuation material dispersed at least partially in the web. The system has a radiation transmission attenuation factor of at least about 10% of a primary 100 kVp x-ray beam. A method of making a radiation attenuation system including a radiation attenuation material dispersed at least partially in a polymeric resin is also disclosed. The method includes extruding the radiation attenuation material and the polymeric resin thereby forming an extrusion. The method also includes forming the extrusion into a web. The web has a radiation transmission attenuation factor of at least about 10% of a primary 100 kVp x-ray beam. A shield for the attenuation of radiation is also disclosed.Type: GrantFiled: January 31, 2001Date of Patent: January 6, 2004Assignees: Worldwide Innovations & Technologies, Inc., Winpak Films Inc.Inventors: John A. Cadwalader, John Q. Zheng
-
Publication number: 20020148980Abstract: A radiation attenuation system is disclosed. The system includes a polymeric resin comprising a web. The system also includes a radiation attenuation material dispersed at least partially in the web. The system has a radiation transmission attenuation factor of at least about 10% of a primary 100 kVp x-ray beam. A method of making a radiation attenuation system including a radiation attenuation material dispersed at least partially in a polymeric resin is also disclosed. The method includes extruding the radiation attenuation material and the polymeric resin thereby forming an extrusion. The method also includes forming the extrusion into a web. The web has a radiation transmission attenuation factor of at least about 10% of a primary 100 kVp x-ray beam. A shield for the attenuation of radiation is also disclosed.Type: ApplicationFiled: January 31, 2001Publication date: October 17, 2002Applicant: WORLDWIDE INNOVATIONS AND TECHNOLOGIES, INC. and WINPAK FILMS INC.Inventors: John A. Cadwalader, John Q. Zheng
-
Patent number: 5501525Abstract: An improved bone-guard bag for packaging meats and other foods for longer term preservation during storage and transport, comprising an oxygen and moisture-impermeable outer bag and a puncture-resistant inner bag for preventing bones and other sharp surfaces of the packaged food from penetrating the inner and outer bags to compromise the oxygen and moisture-resistant integrity thereof. Vent means are provided in the bone-guard bag to permit oxygen evacuation, gas flushing, and sealing of both the inner and outer bags simultaneously. The inner bag is secured to the outer bag to allow movement relative to each other, while facilitating insertion of food therein. The outer bag is preferably made from a coextrusion of separate polyethylene and nylon layers bonded together. The inner bag is preferably made from at least two unbonded plies of polyethylene film for increased puncture resistance.Type: GrantFiled: February 24, 1994Date of Patent: March 26, 1996Assignee: Winpak Films, Inc.Inventors: Stanley J. Cox, Kevin M. Byers