Sound absorbing (acoustic) board

Abstract

A sound absorbing board (1) that is a sound absorbing board where a decorative layer (2) and a rigid substrate material (3) are laminated, and where the substrate material contains parallel grooves (4) spaced at a pre-determined distance, and also, where the cross sectional surface of the grooves in a direction perpendicular to the longitudinal direction of the substrate has a shape that contains mutually adjacent neck parts (4a) and trunk parts (4b) is described. The sound absorbing board has decorative properties and at the same time has sound absorbing, sound isolation properties, and can be easily processed.

Dependencies are inferred from the claim text.