Sound-absorbing member lamination structure

摘要

There is provided a sound absorbing member lamination structure in which the functions by the sound field adjustment can effectively be achieved by preventing the sound reflection against an intension of design in a boundary between the sound absorbing member and the other layer, when the sound absorbing member and the other layer are laminated into a united body. When the sound absorbing member and the other layer are placed in a stacked state, they are bonded with the use of a pressure-sensitive adhesive, so that the sound absorbing member and the other layer are combined together, with the pressure-sensitive adhesive kept uncured in a stacked state of the sound absorbing member and the other layer. Thus, such an uncured pressure-sensitive adhesive does not become a reflection portion of a sound. It is therefore possible to cause the sound to pass through appropriately the boundary between the respective layers.

主权项

1. A sound absorbing member lamination structure, in which one or more sound absorbing members and at least one of one or more interpositions and a surface covering are laminated into a united body, wherein:
said interposition is in a form of a flexible thin sheet or a non-flexible thin sheet; the sound absorbing members, which are substantially in a form of a porous sheet, and said interposition are laminated by applying a pressure-sensitive adhesive composition, which is in a form of liquid and does not express an adherence property, on one or both of said sound absorbing member and interposition, and by placing the interposition between the sound absorbing members; and said pressure-sensitive adhesive composition as applied converts into an intrinsic pressure-sensitive adhesive to express the adherence property so that said intrinsic pressure-sensitive adhesive adheres to each of said sound absorbing members and interposition to combine the sound absorbing members and interposition into a united body, wherein: said interposition defining a thickness that is less than a thickness defined by said sound absorbing member and has a plurality of through-holes formed at predetermined intervals, said through-holes having a larger size of an opening in comparison with a thickness of the interposition and enabling the sound absorbing members, between which the interposition is placed, to come into direct contact with each other; the pressure-sensitive adhesive composition is also provided on surface portions of the sound absorbing members, which overlap with each other in a position of the hole of said interposition in a laminated state; and the sound absorbing members are adhered into a united body in the position of each of the holes of said interposition in the laminated state.