JP2544170Y2 - Sound insulating wooden flooring - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a sound-insulating wooden flooring material having extremely excellent sound-insulating performance.

[0002]

2. Description of the Related Art Recently, wood-based flooring materials have been increasingly used instead of carpets for floors of middle- and high-rise houses. However, wood-based flooring materials are inferior to carpets in sound insulation. There was a drawback that the habitability was impaired.

[0003]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned drawbacks and to provide a wooden flooring material having excellent sound insulation.

[0004]

The present invention for solving the above-mentioned problems is based on the fact that a sound insulating sheet, a vibration damping sheet or a cushioning sheet, a perforated wood board, a nonwoven fabric, and a soft interior having a high foaming ratio are provided on the back of a wood board. The present invention relates to a sound-insulating wooden flooring material, in which a hollow projection and a cushioning member made of a foam with a hollow projection composed of a projection with a low expansion ratio and a hard eye are sequentially bonded. Furthermore, the present invention further provides a method for bonding a sheet to the back surface of a foamed cushioning material with hollow projections, for example, when directly attaching to a concrete floor with an adhesive, a gap between the projections of the foamed cushioning material with hollow projections. The gap was prevented from being filled with the adhesive to reduce the buffer effect.

Further, it is a particularly preferred embodiment that the wooden board is a small split type decorative plywood in terms of sound insulation.

As a material of the cushioning material made of a foam with hollow projections, a rubber foam mainly composed of neoprene, butadiene acrylonitrile rubber, and butadiene styrene rubber is particularly preferable, but is not limited thereto.

Hereinafter, the sound-insulating wooden flooring material of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a wooden board, and a sound insulating sheet, a vibration damping sheet or a buffer sheet 2, a perforated wooden board 3, a nonwoven fabric 4, and a cushioning material 5 are sequentially attached to the back surface of the wooden board 1. .

Examples of the wood board 1 include a plywood, a particle board, a hard board, a parallel plywood, and the like. The decorative layer is formed by painting or the like. In addition, when this invention is used as a floor base material, the above-mentioned makeup is unnecessary.

The thickness of the wooden board 1 is preferably 2.5 to 4.0 mm, but is not limited thereto. The sheet 2 to be bonded to the back surface of the wooden board is a sound insulation sheet, a vibration damping sheet or a cushioning sheet. Examples of the sound insulation or vibration damping sheet include a lead-in PVC sheet, an inorganic powder-filled rubber sheet, and a PVC sheet. The thickness is preferably 0.8 to 2 mm, but is not limited thereto.

The cushioning sheet may be any cushioning sheet such as a natural rubber foam sheet, a synthetic rubber foam sheet, a polyvinyl chloride resin foam sheet, a polyethylene foam sheet, and the like. The thickness is preferably 1-2 mm. further,
In this invention, the slit 1
By providing the zero-perforated wood board 3, the sound insulation effect can be improved as shown in the embodiments described later. A plywood, a particle board, a hard board, a parallel plywood, or the like can be used as the perforated wood board 3 with the slit 10.
The thickness is preferably 2.5 to 4.0 mm, and the hole diameter is 5 to 15 mm
Is preferred, but not limited thereto.

Although one perforated wood board is effective,
If two or more sheets are used and bonded with the holes shifted, the sound insulation effect is further improved. The type shown in FIG. 2 in which the wooden board 1, the sound insulating sheet, the vibration damping sheet or the cushioning sheet 2, and the perforated wooden board 3 are divided into small pieces and assembled is provided in terms of sound insulating properties. Are better.

Nonwoven fabric 4 adhered to the back of perforated wooden board 3
One or two or more types of polyester fiber, polypropylene fiber, nylon fiber, etc. are made into a sheet, or a part is melted by a needle punch method or heat, and the fibers are welded in a dot form to form a sheet. Can be used. If the thickness of the fiber is too thin, the nonwoven fabric may become loose and the sound insulation performance may be reduced. Not something. The thickness of the sheet is preferably 1 to 3 mm. As the cushioning material 5, a cushioning material made of a foam with hollow protrusions containing butadiene styrene rubber as a main component is used. FIG. 3 shows a plan view of the cushioning material 5. The cushioning material 5 is composed of a protruding portion 6 having a high foaming ratio and a soft inside, and a protruding portion 7 having a low foaming ratio and a hard eye. The protrusion 6 is higher than the protrusion 7.

The wooden board 1 including the surface layer including the sound insulating sheet, the vibration damping sheet or the cushioning sheet 2 and the perforated wooden board 3 of the intermediate layer are provided.
It is possible to arbitrarily reduce the movement of the surface plywood by performing the seed processing for obtaining seeds over the entire surface. Projection 6 of cushioning material 5
The transmission of sound can be prevented by the buffer effect of the hollow portion 8. Further, with respect to the load from above, the portion that cannot be received by the hollow portion 8 of the hollow protrusion 6 with the high foaming ratio and the soft interior can be received by the projection 7 having the low foaming ratio and hard eyes. ing.

As shown in FIG. 4, when a sheet 9 such as a cushioning sheet or a non-woven fabric is further bonded to the back surface of the foam cushioning member 5 with hollow projections, The gap can be prevented from being filled with the adhesive to reduce the buffer effect.

[0015]

[Example 1] Decorative plywood having a size of 1 × 3 and a thickness of 4 mm
1mm thick rubber foam sheet, 4mm thickness, perforated plywood with slit of 10mm hole diameter, 10mm denier polyolefin yarn fused 1mm nonwoven fabric, 6mm thick foam with hollow projections The desired flooring material was manufactured by bonding the cushioning material.

Example 2 A desired floor material was manufactured by further adhering a foam sheet as a cushioning sheet to the back surface of the foam material with hollow projections of the floor material of Example 1. As the foamed sheet, a polyolefin-based foamed sheet, a rubber-based foamed sheet, etc. are used, and among them, an independent foam is excellent in waterproofness,
It is preferable because it is harder to set than a continuous foam.

In the case of the second embodiment, the foamed sheet or the non-woven fabric 9 provides a cushioning effect, and serves as an adhesive surface when directly applied to a concrete floor. To prevent the buffer effect from being reduced.

COMPARATIVE EXAMPLE A flooring material similar to that of Example 1 was produced except that no nonwoven fabric was used.

FIG. 5 shows the measurement results of the floor impact sound levels of the floor materials of Example 1 and Comparative Example. When comparing Example 1 with the comparative example in FIG. 5, the measurement result of the floor impact sound level of the floor material is the same for L-45, but the value of 500 Hz is equal to that of Example 1.
It turns out that is superior.

[0018]

As described in detail above, according to the present invention, it is possible to obtain a wooden flooring material having an extremely excellent sound insulation property, particularly, an excellent sound insulation property at around 500 Hz. In addition, in the case of a flooring material in which a foamed sheet or a nonwoven fabric is further bonded to the back surface of a foamed cushioning material with hollow projections, the foamed sheet or the nonwoven fabric provides a buffering effect and also serves as an adhesive surface when directly applied to a concrete floor. In addition, it is possible to prevent the gap between the projections of the foam cushioning material with hollow projections from being filled with the adhesive, thereby preventing the cushioning effect from decreasing.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing another embodiment of the present invention.

FIG. 3 is a plan view of a cushioning material.

FIG. 4 is a sectional view showing a sound-insulating wooden flooring as another embodiment of the present invention.

FIG. 5 is a measurement diagram showing the sound insulation of the flooring materials of Example 1 of the present invention and Comparative Example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wood board, 2 Sound insulation sheet, damping sheet or cushioning sheet 3 Perforated wood board 4 Nonwoven fabric 5 Buffer material 6 Hollow projection 7 Hard projection 8 Hollow 9 Foam sheet or nonwoven fabric 10 Slit

Claims (2)

(57) [Scope of request for utility model registration] 1. A sound-insulating sheet, a vibration-damping sheet or a cushioning sheet, a perforated wooden board, a nonwoven fabric, a high-foaming-ratio hollow projection and a low-foaming-ratio hard projection on the back of a wooden board. A sound-insulating wooden flooring material, characterized in that foam cushioning materials with hollow projections are sequentially laminated. 2. A sound-insulating wooden flooring material, characterized in that a sheet is further attached to the back surface of the foamed cushioning material with hollow projections according to claim 1.