Patents Assigned to Wiggins Teape Research & Devel. Ltd.
  • Method of producing non-woven fibrous material
    Patent number: 3947315
    Abstract: The invention relates to an improved method of making bulky non-woven fibrous material including cellulosic fibres and potentially crimped synthetic fibres, the improvement consisting of draining a layer of a foamed aqueous suspension of the fibres, drying the drained layer, and releasing the potential crimp in the synthetic fibres while supporting the layer substantially free from restraint against shrinkage.
    Type: Grant
    Filed: May 12, 1971
    Date of Patent: March 30, 1976
    Assignee: Wiggins Teape Research & Devel. Ltd.
    Inventor: Malcolm Kenneth Smith