Patents Assigned to Westvaco Company
  • Method for bonding pour spouts to containers
    Patent number: 5088643
    Abstract: The polymer coated exterior of a paperboard container used to package liquid products is selectively treated with a flame or corona to raise the surface tension in the areas which are intended to accept ink while eliminating or canceling any surface treatment in the region where a pour spout fitment is to be bonded to the container.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: February 18, 1992
    Assignee: Westvaco Company
    Inventors: Stephen L. Frazier, James A. Hiller