Optimized pattern of a damping layer for wall, floor, and ceiling constructions

Abstract

An acoustic damping article includes a substrate, wherein the substrate has a surface area S. The acoustic composition further includes a polymer resin. The polymer resin coats partially the surface area with a set of areas. The ratio of the coated areas over the surface area S is less than 1 and the polymer resin coverage is not greater than about 500 g/m 2 .

1 . (canceled) 
     
     
         2 . (canceled) 
     
     
         3 . An acoustic damping article comprising:
 a substrate, the substrate having a side, the side having a total surface area S t ;   a polymer resin, wherein the polymer resin partially coats the side in a set of n areas, S c1 , . . . , S cn , wherein n≧1 and a ratio of the sum of coated areas S c  over the surface area S t  is less than 1; wherein the acoustic damping article has a modal damping factor in the range between 50 to 850 Hz of at least about 10%.   
     
     
         4 . (canceled) 
     
     
         5 . The acoustic damping article according to  claim 3 , wherein the acoustic damping article has a modal damping factor in the range between 700 to 1500 Hz of at least about 10%. 
     
     
         6 . (canceled) 
     
     
         7 . The acoustic damping article according to  claim 3 , wherein the acoustic damping article has a modal damping factor in the range between 1500 to 4000 Hz of at least about 10%. 
     
     
         8 . (canceled) 
     
     
         9 . (canceled) 
     
     
         10 . (canceled) 
     
     
         11 . (canceled) 
     
     
         12 . (canceled) 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . An acoustic damping article comprising:
 a substrate, the substrate having a side, the side having a total surface area S t ;   a polymer resin, the polymer resin having a shear modulus G′ at 1000 Hz and at room temperature and a thickness t, wherein the polymer resin partially coats the side in a set of n areas, S c1 , . . . , S cn , wherein n≧1 and a percentage coverage p is the quotient of the sum of coated areas S c  over the surface area S t  is less than 1;   wherein a Patterned Interlayer Stiffness (G′×p)/t is at least about 0.7 GN/m 2 .   
     
     
         18 . (canceled) 
     
     
         19 . (canceled) 
     
     
         20 . The acoustic damping article according to  claim 17 , wherein p is at least about 0.1. 
     
     
         21 . The acoustic damping article according to  claim 17 , wherein p is not greater than about 0.95. 
     
     
         22 . The acoustic damping article according to  claim 17 , wherein t is at least about 50 microns. 
     
     
         23 . (canceled) 
     
     
         24 . The acoustic damping article according to  claim 17 , wherein the polymer resin has a glass transition temperature not greater than about 40° C. 
     
     
         25 . The acoustic damping article according to  claim 17 , wherein the polymer resin has a shear modulus G′ of not greater than about 100 MPa at about 1000 Hz and at room temperature. 
     
     
         26 . (canceled) 
     
     
         27 . The acoustic damping article according to  claim 25 , wherein the shear modulus G′ is at least about 0.2 MPa. 
     
     
         28 . The acoustic damping article according to  claim 17 , wherein the polymer resin has an inherent damping loss factor of at least about 0.4 at about 1000 Hz and at room temperature. 
     
     
         29 . (canceled) 
     
     
         30 . The acoustic damping article according to  claim 17 , wherein at least one area of the set of coated areas is in the shape of a rectangle, a square, a triangle, a pentagon, a hexagon, a circle, a circular section, a ring, a half ring, or any combination thereof. 
     
     
         31 . The acoustic damping article according to  claim 30 , wherein the rectangle is defined by sides a and b, wherein a proportion of length (a)/length (b) is greater than about 50. 
     
     
         32 . The acoustic damping article according to  claim 17 , wherein the set of coated areas forms a pattern of stripes. 
     
     
         33 . The acoustic damping article according to  claim 32 , wherein the pattern is at least one of straight stripes, wavy stripes, zig-zag stripes, parallel stripes, or a combination thereof. 
     
     
         34 . (canceled) 
     
     
         35 . The acoustic damping article according  claim 17 , wherein the substrate is selected from a wall panel, a ceiling panel, a dry wall, a tile, a subfloor panel, or a plastic sheet. 
     
     
         36 . (canceled) 
     
     
         37 . (canceled) 
     
     
         38 . (canceled) 
     
     
         39 . (canceled) 
     
     
         40 . (canceled) 
     
     
         41 . (canceled) 
     
     
         42 . A method of preparing a construction panel, the method comprising: coating a first major surface of a first rigid panel with a polymer resin in a set of areas, the polymer resin having a shear modulus G′ at 1000 Hz and at room temperature and a thickness t, wherein the polymer resin partially coats the surface in a set of n areas, S c1 , . . . , S cn , wherein n≧1 and a percentage coverage p is the quotient of the sum of coated areas S c  over the surface area S t  is less than 1;
 wherein a Patterned Interlayer Stiffness (G′×p)/t≧0.7 GN/m 3    
 
     
     
         43 . The method according to  claim 42 , wherein the areas are selected from a rectangle, a square, a triangle, a pentagon, a hexagon, a circle, or a ring. 
     
     
         44 . The method according to  claim 42 , wherein the areas form a pattern of stripes. 
     
     
         45 . (canceled) 
     
     
         46 . The method according to  claim 42 , wherein the coating includes spraying, brushing, trowelling, plating, or stenciling. 
     
     
         47 . (canceled)