Gypsum board perforated panel for sound absorption, has gypsum board, which consists of two partial panel, where one panel has perforation of smaller diameter and another panel has perforation of larger diameter

摘要

The gypsum board perforated panel has a gypsum board (1), which consists of two partial panels (2,4). A panel has a perforation of smaller diameter (b) and another panel has perforation of larger diameter (a). The partial panels are connected with one another such that a perforation (5) of smaller diameter of the former partial panel joins in another perforation (3) of larger diameter of the latter partial panel. An independent claim is included for a method for manufacturing gypsum board perforated panel for sound absorption.