The Celotex Corporation

Alan L Boyd

Fred L Migliorini

William D Pittman

A method for texturing the surface of an acoustical fiberboard by utilizing a wheel blast machine. The fiberboard is conveyed through a housing wherein at least one first centrifugal blasting wheel throws abrasive particles at a portion of the fiberboard surface to abrade it. A blower provided in the housing removes spent abrasive particles thrown by the first wheel(s), and then at least one second centrifugal blasting wheel in the housing throws abrasive particles at the remaining untreated surface to complete the abrasion, whereby removal of the spent particles by the blower prevents masking of the surface and allows the formation of a pleasing and uniform pattern over the entire fiberboard surface.

Texturing of acoustical mineral fiberboard with wheel blast machine

A method of producing an acoustical mineral fiberboard comprising

Growing community of inventors

Largo, FL, United States of America

Alan L Boyd