Patents Assigned to Plastech Multiseals Limited
  • Method and apparatus for forming an extrusion
    Patent number: 7422711
    Abstract: A method of forming an extrusion comprises passing a first, plastics material (12) through a first channel (104) in a die, passing a second, plastics material (14) through a second channel (112) in the die, and passing a third, plastics material (16) through a third channel (314) in the die. At least one of the materials is passed through a metering gap into contact with the other materials to cause the at least one material to bond with the other materials as the materials pass through the die.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: September 9, 2008
    Assignee: Plastech Multiseals Limited
    Inventors: Richard S. Whelan, Robert G. Whelan