Patents Assigned to J. R. Compton Limited
  • Porous web material
    Patent number: 6548433
    Abstract: A fibrous, porous web material of the heat seal type having improved particulate retention properties for use in the manufacture of beverage infusion bags. The material comprises juxtaposed, successively wet laid first (1), second (5) and third (7) fibrous layers, at least one of said layers incorporating heat sealable fibres. The fibres in the first layer are of greater aspect ratio than those in the second layer which are of higher aspect ratio than those in the third layer.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: April 15, 2003
    Assignee: J. R. Compton Limited
    Inventors: Ivan Gbur, Brian Tomkinson, Joyce Alston