JPH0387463A - Soundproof floor material - Google Patents

Abstract

PURPOSE:To minimize compressive deformation and reduce lightweight impact noise by forming a floor base material an elastic sheet material having a determined void and a plate material on which uneven surfaces are formed to disperse impact force, and laminating this base material on a woody floor material layer. CONSTITUTION:A soundproof floor material is formed out of a woody floor material layer 1 and a floor base material 2 on the lower surface thereof in which an unevenly formed plate material 4 is sandwiched between elastic sheet materials 5. The elastic sheet material 5 is bonded to an elastic fibrous sheet by an elastic resin having a resin solid content of less than 50% to form a thickness of about 2-10mm having a percentage of void of 50-80% A fibrous material such as polyester is braided and spirally formed to give resilient performance. Uneven surfaces are formed on the plate material 4 formed out of a hard vinyl having a thickness of about 3-20mm to disperse impact force. This is sandwiched between the elastic sheet materials 5 to form a sandwiched floor base material 2, which is then laminated on the lower surface of the woody floor material layer 1.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to soundproof flooring materials, and particularly to soundproof flooring materials, particularly for use under floors made of concrete surfaces with a smooth surface or plywood or particle board, etc., to reduce floor impact noise. It relates to wood-based flooring materials that are fixed to the ground primarily using adhesives.

[Conventional technology]

Various methods have been proposed in the past to reduce firefights. In this case, floor impact noise is classified into weight impact sound and lightweight impact sound, but since weight impact noise is affected by the structure of the building itself, lightweight impact noise is the most effective mitigation measure in terms of improving flooring materials. Sound reduction is exclusively oriented.

Adjusting the hardness of the floor surface finishing material is effective in reducing light weight tE"J noise; the softer the surface material, the greater the reduction effect.
However, in the case of wood-based flooring materials using solid boards or natural wood decorative plywood, the surface cannot be made soft because the surface is made of wood. Although it is possible to use relatively soft wood, it is easily scratched regardless of whether the surface is painted or not, and its commercial value is low. Therefore, the conventional method has been to divide wood flooring into several layers and combine different materials.

At this time, the materials used in combination with wood materials such as plywood and particle board include resin damping sheets, glass wool, rock wool, foamed resin sheets such as polystyrene, rubber cushions, and nonwoven fabrics.

Many proposals regarding these techniques have already been made, for example, Japanese Patent Application Laid-Open Nos. 63-44067 and 63-6.
No. 3857 and Japanese Unexamined Patent Publication No. 1-10869 are known.

Furthermore, if these methods do not sufficiently reduce floor impact noise, special flooring materials are used. These include relatively thick sheet materials such as styrene foam, glass wool, and rock wool.

On the other hand, there are also methods called floating floor construction method and standing floor construction method. Many proposals have already been made regarding these technologies.
For example, JP-A-56-162741, JP-A-61-1
No. 46957, JP-A-62-146355, JP-A-6
There are many publications such as No. 3-308152.

Various ideas have also been made for cushioning materials laminated on the upper or lower surfaces of plywood. For example, in Japanese Patent Laid-Open Nos. 1137064 and 1-131753, cushioning materials are provided with uneven surfaces to reduce floor impact noise. It is stated that efforts should be made to suppress this.

[Problem to be solved by the invention]

Relatively thick plate materials such as styrene foam, glass wool, and rock wool are used as base materials for conventional wood flooring. Although these materials are very thick, they have little effect in reducing floor impact noise, and the use of thick materials is often subject to design restrictions. If a soft material is used with the expectation of a mitigation effect, the amount of deformation will be large when the material is compressed under a load, and if a thick material is used, it will sink a lot when walking on wooden flooring. Some have the disadvantage of giving pedestrians a fluffy feeling.

Also, when dividing conventional wood flooring into several layers,
In addition to wood materials, we also use resin damping sheets, glass wool,
Rock wool, foamed resin sheets such as polystyrene, rubber socks, non-woven fabrics, etc. are used. Although these methods attempt to reduce floor impact noise by utilizing the properties of various materials, they are not definitive methods because the floor impact force cannot be dispersed in two or more directions. As mentioned above,! 1. There is also a conventional technique of providing uneven surfaces on the shock absorbers, and although this is expected to have some effect in reducing floor impact noise, it is still insufficient in terms of preventing excessive sinking. It was something.

Therefore, the object of the present invention is to improve the base material used for laminated wood floors, and to create a flooring material that has a large effect of reducing floor impact noise despite its small thickness and has a small amount of compressive deformation. Our goal is to provide the following.

[Means to solve the problem]

The present inventors have conducted research to solve the above problems, and have effectively reduced floor impact noise by combining an elastic sheet with a shock absorption function and a plate material that disperses floor impact force. We have found a flooring material that reduces the problem, and have completed the flooring material of the present invention using this material.

That is, the present invention is characterized in that a flooring material formed by laminating an elastic sheet material with little compressive deformation on at least one surface of a plate-like material having an uneven surface is provided in the wood-based flooring material layer. It is a soundproof flooring material.

The present invention will be explained in detail below.

In the present invention, a flooring material made of a sheet-like material that itself has elasticity and a plate-like material that disperses impact force for the floor is provided on the lower surface of a wood-based flooring layer.

FIG. 1 shows an example of the structure of the flooring material of the present invention, where l is a wooden flooring layer, and 2 is a subflooring material provided on the lower surface of the flooring layer l. The flooring material 2 is constructed by laminating elastic sheet materials 5, which are less susceptible to compressive deformation, on both upper and lower surfaces of a plate-like material 4 on which an uneven surface 3 is formed.

As the elastic sheet material 5 with little compressive deformation, an elastic fiber sheet or a high resilience damping material can be used.

An elastic fiber sheet is made by bonding fibers together using an elastic resin and forming a predetermined gap between the fibers. It is something that has. This sheet material preferably has a porosity of 50% to 80% because it forms voids; if it is less than 50%, the cushioning effect will be small;
If it exceeds %, the amount of deformation due to compressive force becomes too large, which is not appropriate.

The thickness is preferably 2B or more, and if it is less than 2ff111, the elasticity of the sheet cannot be fully utilized. but,
If it is too thick, the buffering effect will be reduced. The preferred thickness is 2~
It is 10m.

Although the material of the fibers is not particularly limited, it is preferable that the fibers be made of relatively long fibers, thick, stiff, and durable against repeated loads. Such materials include polyester, polypropylene, nylon, coconut fiber, and the like. The fiber length of the fiber material is 2 to 5 cm.
, the fiber diameter is preferably between 0°1 and 0.15°.

In order to give the sheet elasticity, the fibers are knitted or woven, or folded, twisted, or spiraled to form a sheet, rather than leaving them straight.
The structure is such that the fibers themselves always rebound against compressive force applied in a direction perpendicular to the surface of the sheet. Here, the fibers are bonded together with an elastic resin that acts as a buffer and prevents the transmission of vibrational shocks. Such resins include, for example, natural rubber (Nl
2), neobrene rubber (CR), nitrile rubber (NBR)
), silicone rubber, butyl rubber (CIIR), styrene butadiene rubber (SBR), ethylene propylene diene copolymer (EPDM), and the like. If the amount of this resin added is too small, the fibers cannot be fixed well, resulting in a low sheet stability, while if the amount of resin is too large, the elasticity of the fibers will become too much, making it impossible to make full use of the repulsive force. Therefore, it is desirable to suppress the resin solid content to 50% or less. The resin may be applied by dipping or spraying. Furthermore, it is advantageous in terms of the buffering effect if the fibers are joined at points.

On the other hand, high repulsion damping material is a damping material made of a material with high repulsion resilience.As such a damping material, natural rubber (
NR), neobrene rubber (CR), nitrile rubber (NB
R), vibration damping rubber materials such as silicone rubber, butyl rubber (rlR), styrene butadiene rubber (SBR), ethylene propylene diene copolymer (EPDM), vibration damping sheets made by adding fillers to PVC, silicone gel, etc. Can be mentioned. The thickness of this highly resilient vibration damping material is preferably 2 to 5 m in order to achieve the desired elasticity and cushioning effect.

The present invention effectively reduces floor impact noise by combining the above-described elastic sheet material 5 with a plate material 4 that disperses impact force for the floor.

The plate material 4 has an uneven surface 3, and there are various ways to form this uneven surface. For example, as shown in FIG.
It may be formed into a wave shape 6, or it may be formed into a large number of independent protrusions 7 as shown in FIG. 8 indicates a convex portion, and 9 indicates a concave portion.

By forming the uneven surface 3 on the plate material 4 in this manner, when an impact force is applied to the floor material, the force can be dispersed in two or more directions. That is, as shown in FIG. 4, the impact force applied to the floor material is applied to the convex portion 8 of the plate material 4 as a vertical force W, but this vertical force W is dispersed in two directions, W5 and W2. When the convex portion 8 is an independent protrusion, dispersion force is generated in the plane of the paper and in the opposite direction, resulting in dispersion in two or more directions.

As the material of the plate member 4, hard vinyl chloride, polyester, polycarbonate, etc. are used. Moreover, the thickness of the plate material is preferably 3 to 20III11.

The flooring material in the present invention may be one in which the elastic sheet material 5 is laminated only on one side of the plate material 4. When the elastic sheet materials 5 are laminated on both the upper and lower surfaces of the plate material 4, the upper and lower surfaces may be made of the same material, or the upper and lower surfaces may be made of different materials. . For example, it may be one in which an elastic fiber sheet is laminated on one side of a plate-like material, and a highly resilient damping material is laminated on the other side.

The layers constituting the flooring material of the present invention are fixed to each other with an adhesive, a pressure-sensitive adhesive, double-sided tape, or the like.

[Effect]

Since the flooring material of the present invention has a subfloor material made by laminating an elastic sheet material with little compressive deformation and a plate material formed with an uneven surface, the elastic sheet can withstand compressive force applied in the vertical direction. As the material rebounds, the plate-like material deforms and disperses the vertical force in two or more directions, thereby reducing the amount of compressive deformation and making it possible to reduce light impact noise and prevent vibration impact.

(Example〕 The present invention will be explained in detail below.

Materials used in this example 1. J A, S ordinary plywood: r¥sa4 shame 2. Perforated plywood: JAS standard compliant with holes of 5 mm diameter made at 3 cm intervals 3. Non-woven fabric: Toabo DF600 4 , Elastic sheet (1): Invention Thickness: 5m Porosity: 65% Coconut fiber: 5BR=100: 35 (solid content ratio) Bran fiber diameter: 0.10-0.13 11Il1M is 80% or more5. Elastic sheet 1-(2): of the present invention 5 m thick butyl rubber sheet 6, corrugated sheet 2 Commercially available hard PVC Using the above materials, JIS A] 418 r Method for measuring floor impact sound level at building site Accordingly, measurements were performed using a tapping machine.

Table 1 shows the measured values at octave band center frequencies of 12511z and 250tlz, where the effect of reducing impact noise is clearly visible.

(Effects of the Invention) According to the present invention, it is possible to provide an ideal wood-based flooring material that has a small amount of compressive deformation and is lightweight and excellent in reducing impact noise, and is widely used as a soundproofing flooring material. It has the following benefits.

[Brief explanation of drawings]

FIG. 1 is a partially sectional perspective view showing one embodiment of the flooring material of the present invention;
Figures 2 and 3 are partial cross-sectional perspective views showing examples of configurations of plate materials having uneven surfaces, and Figure 4 shows the state of force distribution when force is applied to convex portions of the plate material. It is an explanatory diagram. 1... Wood flooring layer 2... Floor base material 3... Uneven surface 4... Sheet material 5... Elastic sheet material Fig. 5... Elastic/-t material Fig.

Claims (1)

[Claims] A soundproof flooring material characterized in that a flooring material made by laminating an elastic sheet material with little compressive deformation on at least one surface of a plate material having an uneven surface is provided on a wood flooring layer.