Patents Assigned to Fabriksaktiebolaget EKA
  • Multilayered flexible abrasive containing a layer of electroconductive material
    Patent number: 3942959
    Abstract: The accumulation of electrostatic charges in an abrasive article having a flexible backing sheet, a layer of adhesive and abrasive grains embedded in the adhesive is prevented by incorporating an electroconductive metal pigment or ionizable salt in an inner layer of the article and sandwiching this layer between two layers of substantially lower electroconductance so as to insulate the inner layer.
    Type: Grant
    Filed: August 13, 1973
    Date of Patent: March 9, 1976
    Assignee: Fabriksaktiebolaget EKA
    Inventors: Eric L. Markoo, Tore G. H. Strand, Thorsten W. Sandell