Patents Examined by D. Cornstubble
  • Flexible packaging material containing an antioxidant
    Patent number: 4880696
    Abstract: The concentration of BHT in a flexible packaging material, such as a cereal liner, can be increased by incorporating the BHT into a polymer composition that is extrusion coated onto a substrate, such as PVDC-coated paper. The extrusion coating comprises a heatseal layer and an EVA tie layer containing the BHT. This method substantially prevents evaporation of the BHT. The extrusion temperature is less than the boiling point of BHT.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: November 14, 1989
    Assignee: James River II, Inc.
    Inventor: Apostol Yanidis