SOUND-PERMEABLE LINING FOR ACOUSTIC GYPSUM BOARDS Russian patent published in 2018 - IPC E04F13/08 E04B1/86 

FIELD: physics.

SUBSTANCE: invention relates to a sound-permeable lining intended for placement onto acoustic gypsum boards to cover perforation holes made therein. Sound-permeable lining (1) for covering perforation holes (21) made in an acoustic gypsum board (2), wherein the sound-permeable lining (1) comprises: a first layer (12) from the web material with a thick pile, has such internal structure that the first layer (12) has a first resistance R_S1 to the air flow, which allows the such air flow, that the sound can propagate through the first layer (12) and the second layer (14) attached to it, which is placed between the first layer (12) and the acoustic gypsum board (2), for application to which a sound-permeable lining (1) is intended. At that, the second layer (14) is made of a film material having a second opacity value O₂ and a plurality of through holes (141) made therein, having such a size and shape that the second layer (14) has a second resistance R_S2 to the air flow, which allows the such air flow, that sound can propagate through the second layer (13). Wherein the first layer (12) has a first opacity value O₁ so, that the through holes (141) made in the second layer (14) are invisible through the first layer (12), and the applied sound-permeable lining (1) has a common opacity value of O₁₂, providing the possibility of visual covering of perforation holes (21) made in an acoustic gypsum board (2), and the total resistance R_S12 to the air flow allowing the such air flow, that sound can propagate through the sound-permeable lining (1). Also described is an acoustic gypsum board (2) with a sound-permeable lining (1).

EFFECT: technical result consists in providing a sound-permeable lining to be applied to an acoustic gypsum board, which is configured to hide perforation holes made in an acoustic gypsum board, which eliminates, or at least largely minimizes the disadvantages of the prior art, in other words, a sound-permeable lining to be placed to cover perforation holes made in an acoustic gypsum board that satisfies the proper sound qualities.

23 cl, 4 dwg