JPH07103672B2 - Soundproof floor board - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a soundproof floor board that reduces noise during walking.

[Background Art] As a soundproof floor board that reduces noise during walking to prevent the sound from being transmitted to the downstairs, there is a soundproof floor board that is formed by adhering a foamed resin sheet to the lower surface of the board such as plywood with a veneer on the upper surface. It has been provided conventionally. In this product, the sound insulation effect is exhibited by the foamed resin sheet, and in order to enhance the sound insulation effect, it is necessary to enhance the cushioning property of the foamed resin sheet. It is used.

However, if the cushioning properties of the foamed resin sheet are enhanced in this way, the foamed resin sheet will be easily compressed by the weight of the person when walking, and the board that constitutes the floor material will sink, resulting in a fluffy walk, There was a problem of feeling uncomfortable.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a soundproof floorboard capable of enhancing the soundproofing effect without reducing the feeling of walking.

DISCLOSURE OF THE INVENTION However, in the soundproof floorboard according to the present invention, the foamed resin sheet 2 is arranged on the lower surface of the substrate 1, and the foamed resin sheet 2 is provided with a large number of holes 3, 3 ... Each hole 3 is opened on the upper surface of the sheet 2, a resin 4 having a hardness higher than that of the foamed resin sheet 2 is filled in the hole 3, and an adhesive layer 5 made of this resin 4 is provided between the substrate 1 and the foamed resin sheet 2. The foamed resin sheet 2 is adhered to the lower surface of the substrate 1 with the adhesive layer 5 interposed therebetween, and the foamed resin sheet 2 is formed of a soft material while ensuring soundproof performance.
The resin 4 filled in the holes 3 of the foamed resin sheet 2 prevents the substrate 1 from sinking to enhance the walking feeling. The present invention will be described in detail below with reference to examples.

The substrate 1 is formed of, for example, plywood, and a projecting plate 8 for makeup is attached to the upper surface side thereof as shown in FIG. The foamed resin sheet 2 is formed of a sheet of closed-cell soft foamed polyethylene or the like,
A large number of holes 3, 3 ... Penetrating in the thickness direction are formed in the foamed resin sheet 2 over the entire surface. The hole 3 may be formed as a square hole or a groove instead of being formed as a round hole as shown in FIG. Then, the foamed resin sheet 2 is arranged below the substrate 1, each hole 3, 3, ... Of the foamed resin sheet 2 is filled with the resin 4, and a part of the resin 4 is used as an adhesive layer 5 for the substrate 1.
The foamed resin sheet 2 is adhered to the substrate 1 with the adhesive layer 5 interposed between the lower surface of the foamed resin sheet 2 and the upper surface of the foamed resin sheet 2. The resin 4 has higher hardness than the foamed resin sheet 2,
Further, it is possible to use a material that has self-adhesiveness when cured and has adhesiveness to the substrate 1 and the foamed resin sheet 2, such as polyurethane. When the resin 4 is filled in the holes 3, since the foamed resin sheet 2 is foamed with closed cells, there is no possibility that the resin 4 will penetrate into the foamed resin sheet 2.

As described above, the soundproof floorboard A as shown in FIG. 1 can be obtained. In this case, the foamed resin sheet 2 is made of a soft material and its cushioning property can ensure the soundproofing effect. In addition to grounding the floor base material with the foamed resin sheet 2, the soundproof floor board A is also grounded with the resin 4 filled in the holes 3 of the foamed resin sheet 2. Also, the resin 4 having a high hardness can support the substrate 1 as a foot, and the resin 4 in the hole 3 reduces that the foamed resin sheet 2 is compressed by the weight of a person walking and the substrate 1 sinks. be able to. Therefore, even if the foamed resin sheet 2 is formed of a soft material to enhance the soundproof effect, it is possible to prevent the walking feeling from being deteriorated.

FIG. 2 shows another embodiment of the present invention, in which the hole 3 formed in the foamed resin sheet 2 is not opened at the lower surface but only at the upper surface, and is formed without penetrating. I am doing it. When the hole 3 is formed so as to penetrate like the embodiment of FIG. 1, the resin 4 flows out from the foamed resin sheet 2 and the opening on the lower surface when the resin 4 is filled in the hole 3, and in order to prevent this. It is necessary to use a release sheet or the like at the time of molding, but such a problem does not occur if the holes 3 are provided so as not to penetrate the lower surface of the foamed resin sheet 2 as in the embodiment of FIG. . Foamed resin sheet 2 of the part where the hole 3 is blocked so as not to open on the lower surface
It is preferable that the thickness d is as thin as possible.

In the embodiment shown in FIG. 3, uneven surfaces 9 are formed on the upper surface and the lower surface of the foamed resin sheet 2 to enhance the vibration damping effect of the foamed resin sheet 2 and enhance the soundproofing effect.

[Advantages of the Invention] As described above, in the present invention, the foamed resin sheet is arranged on the lower surface of the substrate, the foamed resin sheet is provided with a number of holes in the thickness direction thereof, and at least each hole is formed on the upper surface of the foamed resin sheet. To fill each hole with a resin having a hardness higher than that of the foamed resin sheet, and an adhesive layer made of this resin is interposed between the substrate and the foamed resin sheet to bond the foamed resin sheet to the lower surface of the substrate with the adhesive layer. Since the foamed resin sheet is grounded on the floor base material, the resin with high hardness filled in the holes of the foamed resin sheet serves as a foot to support the board, and the weight of the person walking The resin in the hole can reduce the compression of the foamed resin sheet and the sinking of the substrate. Even if the foamed resin sheet is made of a soft material to improve the soundproofing effect, it does not deteriorate the walking feeling. Can It can be done. In addition, the resin that fills the holes and becomes the foot can also be used as the resin of the adhesive layer that adheres the substrate and the foamed resin sheet, and the resin that becomes the foot and the resin of the adhesive layer can be separately supplied or dried and cured. Therefore, it is possible to prevent the manufacturing man-hours from increasing particularly even if the legs are formed.

[Brief description of drawings]

1 (a), (b) and (c) are a plan view, a sectional view and a bottom view of one embodiment of the present invention, and FIGS. 2 (a), (b) and (c) are plan views of another embodiment of the same. Figure, cross-section and bottom view, Figure 3 (a)
(B) (c) is a top view, a sectional view, and a bottom view of another example of the above. 1 is a substrate, 2 is a foamed resin sheet, 3 is a hole, 4 is resin, 5
Is an adhesive layer.

Claims (1)

[Claims] 1. A foamed resin sheet is arranged on the lower surface of a substrate, a large number of holes in the thickness direction are provided in the foamed resin sheet, and each hole is opened at least on the upper surface of the foamed resin sheet so that the hardness of the foamed resin sheet is higher than that of the foamed resin sheet. A sound-insulating flooring material, characterized in that each hole is filled with a high resin and an adhesive layer made of this resin is interposed between the substrate and the foamed resin sheet to bond the foamed resin sheet to the lower surface of the substrate with the adhesive layer. .