Abstract: A coated abrasive material comprising a textile backing--in the form of fabric, webbing, fleece and/or laminated material, base binder, abrasive particles and optionally size coat which is characterized in that the textile backing is extensible and that on the particle side an elastic intermediate layer is applied which lies between the textile backing and the usual base binder. This intermediate layer may contain caoutchouc latex and/or polyurethane and/or polymers, which contain butadiene and/or acrylic acid ester. The flexible and extensible coated abrasive may be used for profile grinding, sanding or polishing.
Type:
Grant
Filed:
November 18, 1983
Date of Patent:
August 19, 1986
Assignee:
SIA Schweizer Schmirgel- und Schleif-Industrie AG
Inventors:
Lotte Herrmann, Jakob Ackermann, Armin Steiner
Abstract: Abrasive grains are bound to a flexible support by a pattern of resin applied by means of a curved stencil having a wall thickness of 0.08 to 1 mm and having holes with a diameter of 0.05 to 3 mm, the total hole area amounting to 5 to 50% of the area of the stencil. A top binding agent is applied before or after the drying or hardening of the resin.
Type:
Grant
Filed:
April 28, 1980
Date of Patent:
March 2, 1982
Assignee:
SIA Schweizer Schmirgel-und Schleif-Industrie AG