Method of producing acoustical mineral fiberboard.

摘要

A method of producing an acoustical mineral fiberboard comprising (a) forming an aqueous slurry of mineral fiber-containing solids suitable for forming an acoustical board, the solids content of the slurry being sufficiently high to bring about predominant formation of nodules of mineral fiber throughout the slurry upon mixing of the slurry; (b) mixing (2) the slurry to form the nodules of mineral fibers; (c) dewatering (8, 10) the slurry to form a wet felt; (d) drying (12) the wet felt; and (e) texturing (17) one surface of the dried felt without mechanically punching holes in the surface. s