ACOUSTIC PANEL COMPRISING INTERLACED FIXED MATRIX FROM HARDENED GYPSUM AND METHOD OF ITS MAKING Russian patent published in 2009 - IPC C04B28/14 E04B1/86 

FIELD: construction.

SUBSTANCE: method for continuous manufacturing of acoustic panel includes stages, at which the following actions are realised: preparation of mixture that contains water and burnt gypsum; addition of foaming agent into aqueous mixture of burnt gypsum; mixture pouring with creation of continuous tape; tape maintenance under conditions sufficient for burnt gypsum to create interlaced fixed matrix from hardened gypsum; tape cutting with creation of precursor of moist acoustic panel; and drying of moist acoustic panel to obtain acoustic panel, in which acoustic panel is characterised by value of normal accidental sound absorption equal to at least 0.32, in accordance with modified ASTM E 1050-98. The following are also characterised: the second version of method for manufacturing of acoustic panel and versions of manufactured panels.

EFFECT: higher manufacturability with preservation of physical-mechanical and performance characteristics of panels.

94 cl