Patents Assigned to Layfield Group Limited
  • Method for manufacturing double-walled liner
    Patent number: 7354496
    Abstract: A double-walled liner and an apparatus and method for manufacturing said liner, wherein the outer liner of the double-walled liner is seamed longitudinally and transversely, and wherein the apparatus includes: a frame; a supply section for providing webs of inner and outer liner material; a folding section for folding the webs and including a V-form frame structure comprising mutually converging arms which converge towards an apex.
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: April 8, 2008
    Assignee: Layfield Group Limited
    Inventors: Thomas Rose, Harvey Daviduk