The rectangular slab is composed of 1.27 cm thick slate, the core of which is gypsum and paper surface and back. The slate is penetrated from its face and core with at least 0 holes. 31 cm of diamonds and diamonds that understand at least 9 of the paper area.

摘要

The present Invention relates to an acoustic panel to form a roof or wall, monolithic panel extends through a rectangular Area, and mainly has a Core made of gypsum, the core is essentially coextensive with the area of panel mode which has two opposite sides, each One area of a substantially equal to the area of the Panel,The Core has a multitude of perforations that extend generally between the sides, The Holes are distributed substantially uniformly through the entire area of the core and is open on both sides of the core, the side Face of the core is covered by a porous Layer, the Perforations are optionally restricted on a rear side of the nucleus.The Porous Layer on the side Face of the core is suitable for the adhesion of the compound for Union drywall and paint non blocking Water base.