SOUND INTERLAYER
A sound interlayer includes a first layer made from a first material and a second layer, wherein the second layer comprises a damping system including at least one patch made from a second material different from the first material.
1 . A sound interlayer comprising a first layer made from a first material and a second layer,
wherein the second layer comprises a damping system comprising at least one patch made from a second material different from the first material.
2 . The interlayer according to claim 1 , wherein the first layer comprises a sheet or a set of sheets.
3 . The interlayer according to claim 2 , wherein said first layer comprises at least one hole enabling said at least one patch to be inserted therein.
4 . The interlayer according to claim 3 , wherein the at least one hole is a through-hole for a first layer comprising a sheet or a set of sheets, or a blind hole for a first layer comprising a set of sheets.
5 . The interlayer according to claim 3 , wherein the second layer comprises a plurality of patches, said first layer comprising an equal number of holes to the number of patches so that each patch is inserted in a hole.
6 . The interlayer according to claim 5 , wherein the plurality of patches forming the second layer are connected to each other by fasteners to form a network.
7 . The interlayer according to claim 1 , wherein the plurality of patches are heterogeneous in dimension with a diameter varying from 10 to 50 mm.
8 . The interlayer according to claim 5 , wherein the plurality of patches are separated from each other by a length of 0 to 40 mm.
9 . The interlayer according to claim 5 , wherein the plurality of patches represent at least 30% of a surface of the interlayer.
10 . The interlayer according to claim 1 , wherein the second material is chosen from the list comprising: metals or one of their alloy or oxide, ceramics, wood-type organic materials, mineral materials.
11 . The interlayer according to claim 1 , wherein the first material is a polymer plastic or a woven or non-woven fabric based on natural or synthetic fibers or a glass fiber-based textile.
12 . An insulation panel comprising at least a first substrate, and an interlayer according to claim 1 arranged on said first substrate.
13 . The insulation panel according to claim 12 , comprising a second substrate, the first and the second substrate forming said insulation panel.
14 . The insulation panel according to claim 13 , comprising a second substrate, said interlayer being arranged to secure the first substrate with the second substrate.
15 . The insulation panel according to claim 12 , wherein each substrate of the insulation panel is a glass sheet.
16 . The insulation panel according to claim 12 , wherein each substrate of the insulation panel is a plaster or plywood-type panel.
17 . The interlayer according to claim 10 , wherein the mineral materials include glass or rock.
18 . The interlayer according to claim 11 , wherein the first material is polyvinylbutyral (PVB) and the the natural or synthetic fibers include hemp or flax.