JPH0526193Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention aims to reduce floor impact noise in living rooms such as concrete housing complexes, wooden apartments, and detached houses, and in particular to reduce light impact noise and heavy impact noise. This article concerns a new flooring material.

<Conventional technology> Conventionally, the floors of apartment complexes, apartments, and single-family houses are made by laying plastic foam boards of about 40 mm to 90 mm on top of concrete slabs or wooden joists with a lower base plate in the case of Western-style rooms. There are methods of attaching or nailing an upper base board (steel board) to this, and applying decorative plywood, parquet plywood, carpet, CF sheet, etc. as the top layer finishing material, or combining a part of the above plastic foam board. Create a foothold for nailing and gluing by burying resin pieces, wooden frames, etc.
In many cases, the above-mentioned finishing materials (wood flooring or carpet) are applied directly onto the foam board. In the case of Japanese-style rooms, this purpose was achieved by placing tatami mats directly on top of the plastic foam board. The purpose of using foam board as a subfloor material is indirectly to improve stepping comfort, heat insulation, and some sound insulation, but the direct main effect is to improve piping, pits, etc. by using the upper floor method. By burying the utility section under the floor, we were able to prevent the piping from being exposed.

<Problems to be solved by the invention> However, in recent years, there has been a strong demand for soundproofing between the upper and lower floors of apartment buildings, and with the trend towards improving the living environment, soundproofing of the upper floors of detached houses has also become a requirement. I started to do that.

Although this plastic foam board has some floor sound insulation effect as mentioned above, it is still insufficient.
For example, on a concrete floor with a slab thickness of 150 mm,
If this plastic foam board is applied and laminated flooring is attached, it will pass the lightweight impact sound (tapping) test (JIS A-), depending on the thickness of the flooring.
1418), the floor impact sound level was over L-60, which was not a satisfactory effect.

In general, it is said that the light floor impact sound that is acceptable from the living environment in apartment buildings is preferably L-55 or less.
It is also said that it is preferable for the noise from upstairs in detached houses to be below L-60. This construction system is extremely excellent in terms of ease of construction and reliability of installation, but as far as floor impact noise countermeasures are concerned, even if the thickness of the plastic foam board is increased, It was difficult to obtain a value below 60.

<Means to solve the problem> The inventor used a commercially available plastic foam board that is currently well-used, and combined it with it to create an even better product without sacrificing its light weight and workability. We conducted many experiments to find materials that reduce impact sound levels (improve sound insulation).
We have found that the following combination is effective and have completed the present invention. In other words, the level of floor impact sound can be significantly reduced simply by layering (laminating) a three-dimensional network structure made by interlacing synthetic resin filament, metal filament, or rigid natural fibers on this plastic foam board. This effect was still sufficiently noticeable even when the thickness of the plastic foam board was reduced.

The method of laying plastic foam board and three-dimensional network structure overlapping in the plane direction is to lay the three-dimensional network structure on the foundation floor side and laminate plastic foam board on top of it, or conversely, to lay the three-dimensional network structure on the foundation floor side, and to stack the plastic foam board on top of it, or to Examples include a method in which a plastic foam board is laid on the floor side and a three-dimensional net structure is laminated thereon, or a method in which plastic foam boards are laminated on both the upper and lower sides of the three-dimensional net structure.

As mentioned above, the plastic foam board used in this invention is basically a foam board that is easily available on the market, but we will fabricate particularly thick and thin ones to confirm its effectiveness. In some cases, commercially available thick plates with a thickness of 20 mm to 90 mm were laminated using synthetic rubber adhesive or lattesc, or sliced into thin plates using a continuous belt-shaped saw blade.

The types of plastic foam boards used in this invention are polyurethane, polystyrene, high-impact polystyrene, ABS resin, high-density polyethylene, low-density polyethylene, polypropylene,
EVA (ethylene/vinyl acetate copolymer), polyvinyl chloride, and mixtures of these resins with inorganic powders such as calcium carbonate, clay, talc, shirasu balloons, glass fibers, barium sulfate, and iron powder may also be used. The foaming ratio varies depending on the method of forming the plate, and ranges from 1.5 times to 80 times.
In addition, although the present invention is effective, it is desirable to use one with a low magnification because it has problems in terms of transportability, heat insulation, and cost, and one with an excessively high magnification has problems in terms of compressive strength, tearing strength, etc. ranges from 3 to 60 times. As for the thickness, by combining three-dimensional net structures, even a thin one of about 3 mm is effective as a lightweight impact noise countermeasure, but the thicker it is, the thinner the upper decorative flooring can be, and the easier it is to place piping and pits under the floor. Because it may be buried,
It is possible to achieve a thickness of about 120 mm, and the effects of the present invention are recognized. Furthermore, a wooden frame, wooden crosspiece, resin board, etc. may be embedded in the foam to facilitate attachment of the surface material.

On the other hand, the three-dimensional network structure arranged therein is made by interlacing rigid natural fiber filaments, metal filaments, or synthetic resin filaments in three dimensions and molding them into a rough mat shape, with a large porosity and appropriate elasticity. It has a great effect of absorbing vibration energy. Natural materials such as palm tree, palm fiber formed into a pine shape, intertwined metal wires such as iron, stainless steel, and copper wire, synthetic fibers such as nylon, polyester, polyacetal, polypropylene, and polyethylene filaments. A three-dimensional network structure made by intertwining pieces with a diameter of 0.2 to 2.0 mm is used. The thickness of this three-dimensional network structure sheet is preferably in the range of 3 to 25 mm, and if it is less than 3 mm, the effect of reducing lightweight impact noise will be poor.
This is because even if it is more than that, the reduction effect will not increase much and the cost will increase, which is not preferable.

Next, examples of application of the flooring material comprising the plastic foam board 1 and the three-dimensional network structure 2 of the present invention are shown in FIGS. 1 to 7. The floor base material of the present invention is laid on the foundation floor 3, and the surface material 4 is laminated thereon. The foundation floor 3 is a concrete slab (Fig. 1), foam concrete (Fig. 2), wooden floor/joist floor (Fig. 3), and floating particle board (Fig. 4).
(Fig. 5) or a stand (Fig. 5).
In addition, as the surface material 4, wood flooring (Fig. 1, Fig. 2), decorative plywood (Fig. 3), plywood and
It may be made of CF sheet (Fig. 4), tatami (Fig. 5), parquet board, wood wool cement, decorative tile, or silica board. A decrease is observed.

Next, the order in which the plastic foam board 1 and the three-dimensional network structure 2 are stacked is as follows: the plastic foam board 1 is stacked on the three-dimensional network structure 2 as shown in FIGS. 1 to 5, or the plastic foam board 1 is stacked on the three-dimensional network structure 2 as shown in FIG. Even if the stacking order is reversed,
(Symbol 9 indicates unevenness adjusting material (mortar material)) Alternatively, plastic foam boards may be laminated on both the upper and lower sides of the three-dimensional network structure as shown in Fig. 7. In either case, the effect is It's not lost.

Further, the base material and each floor member may be laminated with adhesive (adhesive tape, FIG. 2, 7) or fixed by nailing (FIG. 1, 8). In addition, in FIG. 4, the support column 5 and the water supply and drainage pipe 6 are illustrated.

To give an example of an experiment in which the present invention was applied to the floor structure shown in Figure 1, for example, in an apartment building with a concrete slab of 150 mm thickness,
Polystyrene foam board with a foaming ratio of 40 times and thickness
12mm thick made of 0.6mm nylon filament
The three-dimensional network structure (porosity 85%) was bonded with a synthetic rubber adhesive to form a base material, and a 5 mm thick plywood was attached to this using the same synthetic rubber adhesive. The light impact sound level of the floor is L-53, so even if you hear this sound downstairs, it does not bother you at all, and the floor surface sinks about 1 mm, which controls the feeling of stepping on the floor when residents walk on it. This provided a comfortable living environment.

<Effects of the invention> The present invention has the above-mentioned structure, and uses the synergistic effect of combining the plastic foam board and the three-dimensional network structure to make the surface decorative material hard, such as wood flooring. Despite the material used, it has an excellent lightweight impact sound reduction effect and creates a comfortable living environment.

[Brief explanation of the drawing]

1 to 7 are sectional views of floor structures of application examples of the floor underlayment material according to the present invention, respectively. 1... Plastic foam board, 2... Three-dimensional network structure, 3... Foundation floor, 4... Surface material, 6... Water supply and drainage pipe.

Claims (1)

[Scope of utility model registration request] Plastic foam board with a thickness of 3 mm to 120 mm,
1. A residential flooring material comprising a three-dimensional network structure formed by interlacing synthetic resin filaments, metal filaments, or rigid natural fibers and laminating it on at least one side.