JPH073906A - Sound absorbing panel of film-enclosing structure - Google Patents

Abstract

PURPOSE:To prevent fine dusts in a sound insulating room from intruding into an inside glasswool layer. CONSTITUTION:The four sides are surrounded by a frame body 1 and a plate 2 is fitted to one face of the frame body and further, glasswool layers 3 are stuffed into the recessed part formed by the frame body and the plate. A non- woven cloth 4 is pasted on the frame body so as to cover the glasswool layers. And furthermore, a superficial cloth 5 is pasted thereon. In this sound absorbing panel constituted as above, a film 6 is interposed between the superficial cloth and the non-woven cloth or between the non-woven cloth and the glasswool and the periphery of the film is stuck closely to the framebody.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing panel used when forming a soundproof room or the like, and more particularly to a sound absorbing panel having a film-sealed structure.

[0002]

2. Description of the Related Art A conventional sound absorbing panel has, for example, FIGS.
As shown in FIG. 1, a frame body 1 is formed of wood or the like, and a plate material 2 such as plywood is attached to one surface side of the frame body 1, and the frame body 1 and the plate material 2 are attached.
Sheet-shaped glass wool is filled in the concave portion formed by and the glass wool layer 3 is formed, and the nonwoven fabric 4 is attached to the other surface side of the frame body 1 so as to cover the glass wool layer,
Further, the surface cloth 5 is further covered and attached thereon.

[0003]

According to such a conventional sound absorbing panel, since the surface cloth 5 side becomes the room, fine dust in the soundproof room, for example, cigarette smoke, soot smoke, oil smoke, etc., is caused by air vibration due to sound waves. It penetrates into the inside of the sound absorbing panel through the surface cloth 5. Therefore, not only the surface cloth 5 and the non-woven fabric 4 are contaminated by the dust, but also the internal glass wool layer 3 is contaminated, which causes discoloration and impairs the aesthetics of the interior. The present invention is made in order to prevent such a conventional problem, in the sound absorbing panel of the above-mentioned structure formed so that fine dust in the soundproof room does not enter the glass wool layer inside, the sound absorbing panel of the film sealing structure. The challenge is to provide.

[0004]

As means for technically solving this problem, according to the present invention, four sides are surrounded by a frame body, a plate member is attached to one surface of the frame body, and the frame body and the plate member are joined together. Filling the glass wool layer in the formed recess, the non-woven fabric is attached to the frame to cover the glass wool layer, further in the sound-absorbing panel attached to cover the surface cloth, A film is interposed between the surface cloth and the non-woven fabric or between the non-woven fabric and the glass wool layer,
Further, the gist is that the periphery of this film is adhered to the frame in a close contact state. Further, the frame is surrounded on four sides, a plate material is attached to one surface of the frame body, a glass wool layer is filled in a recess formed by the frame body and the plate material, and the frame is formed so as to cover the glass wool layer. In a sound absorbing panel in which a non-woven fabric is attached to a body and further applied so as to cover a surface cloth, a film is interposed by point adhesion between the surface cloth and the non-woven fabric or between the non-woven fabric and the glass wool layer. The gist is that the periphery of the film is adhered to the frame in a close contact state.

[0005]

[Operation] A film was interposed between the cloth on the surface side of the sound absorbing panel and the non-woven fabric or between the non-woven fabric and the inner glass wool layer, and the periphery of this film was adhered to the frame body of the sound absorbing panel in a close contact state. Therefore, it is possible to prevent fine dust in the soundproof room from entering the glass wool layer. Further, since the film is adhered in a dot shape, the sound absorbing function of the sound absorbing panel is not significantly deteriorated.

[0006]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings (however, the same members as those of the conventional example are designated by the same reference numerals as those described above). In FIG. 1, reference numeral 1 is a frame body formed of wood or the like, and a plate material 2 such as plywood is attached to one surface (back surface) side of the frame body, and a sheet-like member is formed in a recess formed by the frame body 1 and the plate material 2. Glass wool is filled to form the glass wool layer 3.

Reference numeral 4 denotes a non-woven fabric, which is attached to the front surface of the frame 1 so as to cover the glass wool layer 3 on the other surface (surface) side of the frame 1. This non-woven fabric 4 is shown in FIG.
As shown in FIG.
b.

Reference numeral 5 is a surface cloth, and 6 is a film. The film 6 is spot-bonded 6 to the surface of the glass wool layer 3.
b to cover the glass wool layer 3 and the film 6
The periphery of is bent to the side surface side of the frame body 1 and adhered to the side surface of the frame body 1 in a close contact state 6a.

The surface cloth 5 is covered with the film 6 by spot-bonding 5b to the surface of the film 6, and the periphery of the surface cloth 5 is bent toward the side surface of the frame 1 and adhered to the periphery of the film 6 in a close contact state. I'm wearing 5a.

The sound absorbing performance varies depending on the material and thickness of the film 6, the type of adhesive used, the density of spot adhesion, etc., but these should be set appropriately. In addition, the point bonding may be performed regularly as shown in FIG. 3 or may be appropriately performed in an irregular state. Further, the film is not point-adhered, but the film 6'which is interposed between the surface cloth 5'and the nonwoven fabric 4'as in the embodiment shown in FIG. In some cases, it may be attached 7'only to the frame 1 '. In FIG. 4, 2'is a plate material and 3'is a glass wool layer.

The sound absorbing panel according to the present invention is constructed as described above, the film 6 is interposed between the surface cloth 5 and the non-woven fabric 4, and the periphery of the film 6 is attached 6a to the side surface of the frame 1. Because of the closed structure, it is possible to prevent fine dust in the soundproof room from entering the glass wool layer of the sound absorbing panel due to air vibration caused by sound waves. Therefore, discoloration of the sound absorbing panel can be prevented, and the aesthetic appearance of the interior material can be maintained for a long time.

When the film 6 is point-bonded as described above, the sound absorbing effect of the sound absorbing panel is not significantly deteriorated, and a sound absorbing function almost equal to that of the conventional sound absorbing panel is obtained.

Although not shown, the film 6 is a nonwoven fabric 4
May be interposed between the glass wool layer 3 and the glass wool layer 3. In this case, the film 6 is spot-bonded to the glass wool layer 3 and the periphery of the film 6 is attached to the front surface of the frame 1. Alternatively, it is possible to make a sealed state by bending and adhering it to the side surface of the frame body 1. In this case, since the film 6 is pressed against the glass wool layer 3 by the non-woven fabric 4, the film 6 is not point-bonded to the glass wool layer 3 and is adhered to the frame 1 only in the periphery so as to have a closed structure. Is possible.

[0014]

As described above, according to the present invention,
The four sides are surrounded by a frame body, a plate material is attached to one surface of the frame body, a glass wool layer is filled in the recess formed by the frame body and the plate material, and the frame body is formed so as to cover the glass wool layer. In a sound-absorbing panel having a non-woven fabric adhered thereto, and further being adhered so as to cover the surface cloth, a film is interposed between the surface cloth and the non-woven fabric or between the non-woven fabric and the glass wool layer, and this film Since the periphery of the is adhered in close contact with the frame, it is possible to prevent fine dust in the soundproof room from entering the glass wool layer of the sound absorbing panel due to air vibration caused by sound waves, and prevent discoloration of the sound absorbing panel. As a result, the effect of maintaining the beauty of the interior material for a long time is achieved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a sound absorbing panel according to the present invention.

FIG. 2 is an enlarged view of a part thereof.

FIG. 3 is a plan view showing an example of film point bonding.

FIG. 4 is a cross-sectional view of an essential part showing another embodiment of the present invention.

FIG. 5 is a partially cutaway perspective view of a conventional sound absorbing panel.

FIG. 6 is a sectional view thereof.

[Explanation of symbols]

1, 1 '... Frame body 2, 2' ... Plate material 3, 3 '... Glass wool layer 4, 4' ... Non-woven fabric 4a ... Adhesion 4
b ... Point adhesion 5, 5 '... Surface cloth 5a ... Adhesion
5b ... Point adhesion 6, 6 '... Film 6a ... Adhesion 6b ... Point adhesion 7' ... Adhesion

Claims (2)

[Claims] 1. A frame body is surrounded on four sides, a plate material is attached to one surface of the frame body, a glass wool layer is filled in a recess formed by the frame body and the plate material, and the glass wool layer is covered. A non-woven fabric is adhered to the frame body, and in a sound absorbing panel further adhered so as to cover the surface cloth, a film is interposed between the surface cloth and the non-woven fabric or between the non-woven fabric and the glass wool layer. A sound-absorbing panel having a film-sealed structure, characterized in that the periphery of the film is adhered to the frame in a close contact state. 2. A frame body is surrounded on all sides, a plate material is attached to one surface of the frame body, a glass wool layer is filled in a recess formed by the frame body and the plate material, and the glass wool layer is covered. In the sound absorbing panel, wherein a non-woven fabric is adhered to the frame body and further adhered so as to cover the surface cloth, a film is spot-adhered between the surface cloth and the non-woven fabric or between the non-woven fabric and the glass wool layer. The sound-absorbing panel having a film-sealed structure, characterized in that the film is interposed and the periphery of the film is adhered to the frame in a close contact state.