Patents Examined by Murthy V. Sikha
  • Patent number: 5629005
    Abstract: An absorbent material suitable for use as a medical or hygienic absorbent and comprises a non-woven fibre sheet having dense surface layers 10 and between these layers a less dense region where most of the fibres extend in the plane of the sheet. Transversely extending fibres 16 help to bind the material, the fibres also being bonded to some extent by a hot melt bonding material, e.g. core/sheath-type bi-component fibres. The material is made by forming a blend of fibres, including a minor weight of hot melt fibres, by cross-lapping a plurality of layers 14 to form a web, subjecting the web to needling at low punch density with penetration through the web, thereafter subjecting surface regions 10 of the web to higher punch density needling to form the dense surface layer 10 at each face from the web. The web is then heated, e.g.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: May 13, 1997
    Assignee: British United Shoe Machinery Limited
    Inventors: Nigel J. Brassington, Jean Welburn