The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 1992
Filed:
Nov. 07, 1988
Frank G Drout, Lancaster, PA (US);
Donald L Kurtz, Lititz, PA (US);
Elvin M Weidman, Willow Street, PA (US);
Armstrong World Industries, Inc., Lancaster, PA (US);
Abstract
A highly filled PVC resin powder is formed by coating filler particles with a liquid and blending a dispersion grade PVC resin with the coated filler particles in a low shear mixer. Resin compositions having 60% to 95% filler can be formed. A majority of the resin particles have a size of less than 15 microns. The filler has a particle size distribution in which at least 50% by weight and preferably at least 95% by weight of the particles are retained on a 200 mesh (U.S. Standard) screen. The liquid is a plasticizer and/or stabilizer. Such a composition may be sintered to form a porous mass or layer and the mass or layer printed with a plastisol or acrylate ink.