JPH0747883B2 - Sound insulation wooden floor material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sound insulation wooden floor material, and more particularly, in a multi-story building, it prevents the vibration and noise generated in the upper floor from propagating downstairs. The present invention relates to a sound insulation wooden floor material that can provide a comfortable living property and a living space by insulating the sound generated in the downstairs.

[Conventional technology]

Vibrations and noise propagating from the upper floor through the floor in a multi-story building include the sound of walking with slippers, the light floor impact sound generated by a hard impact body typified by the falling sound of a spoon, and the sound of children jumping. It is roughly classified into heavy floor impact sound generated by a soft impact body typified by the sound of walking with bare feet.

Conventionally, as a method for preventing the propagation of such floor impact sound, a method of using a soft floor finishing material such as carpet on a floor base (base) such as a concrete slab (lightweight floor impact sound) or a floor base A method of increasing the mass and rigidity of (hereinafter simply referred to as "base") (heavy floor impact sound) is effective and has been put to practical use. Above all, a felt carpet floor is generally widely used as a sound insulation floor. . However, in recent years, in this floor mat, since the foundation is a concrete slab, the safety such as injuries to the knees when the occupants fall and collide, and the environmental hygiene aspects such as the occurrence of mites due to the use of floor finishing materials such as felt carpet. In view of the fact that new problems occur in the above, many attempts have been made to solve these problems and provide a wooden flooring material for direct upholstery having excellent sound insulation performance.

For example, we have proposed a wooden floor in which plastic foam is laid on a foundation such as a concrete slab, and a wooden floor finishing material is laid on it. It provides comfortable habitability such as cushioning and heat insulation, and does not impair the damping function of the heavy floor impact sound that the base itself has, but still has satisfactory performance for lightweight floor impact sound. There is still room for improvement as it has not yet arrived.

In addition, wood wool that has a cushioning function, such as glass wool or rock wool, is laid on a base, and a vibration-proof material, particle board, and plywood are sequentially stacked on top of it System floors have been proposed,
It provides comfortable habitability and is effective in preventing the propagation of lightweight floor impact sound. However, the effect of preventing the propagation of the heavy floor impact sound is inferior to that of the carpet floor, and the total height under the floor is high, so that there is a problem that the living space is narrowed, which is not fully satisfactory.

[Problems to be solved by the invention]

The present invention has been made in view of such a current situation, and its purpose is to provide excellent sound insulation performance and comfortable habitability (safety during a fall collision, walking comfort, thermal insulation, It is to provide a wood-based flooring material that has a combination of environmental hygiene and the like, and that can secure a comfortable living space by reducing the total height under the floor.

[Means for solving problems]

The inventors of the present invention filed Japanese Patent Application No. 61-28932 (Japanese Patent Application No.
As a result of further research based on the technical idea of JP-A-62-189252) to solve the above-mentioned problems of the prior art, a plurality of wood-based veneers of a specific thickness are laminated and the entire surface is not fixed by adhesion. The wooden flooring made by joining and fixing the partially fixed and integrated multilayer structure and the wooden flooring with a specific thickness has excellent sound insulation performance (lightweight floor impact sound, heavy floor impact sound ), Comfortable habitability, safety in the event of a crash,
The inventors have found that it is possible to provide walking comfort, thermal insulation, environmental hygiene, etc. and a comfortable living space (low total floor height), and have completed the present invention.

That is, according to the present invention, a plurality of wood-based veneers with a thickness of 6 mm or less are laminated, or a face material is arranged on the front surface and / or the back surface as needed, and the important points are fixed without substantially adhering. Provided is a sound insulation wooden floor material which is a joined body of an integrated multi-layer structure and a wooden floor finishing material having a thickness of 6 mm or less.

Hereinafter, the present invention will be described in detail.

The wood-based veneer used in the production of the multilayered product according to the present invention is, for example, a rotary veneer obtained by processing commercially available wood such as lauan wood, rice pine, beech, sen, oak with veneer lace or slicer. A plate, a sliced veneer or a broken version of these veneers is used.

The thickness of these wood-based veneers is usually 6 mm or less, preferably in the range of 0.5 to 4 mm. When the veneer thickness exceeds 6 mm, the sound insulation performance tends to be significantly reduced, which is not desirable.

The multilayer structure according to the present invention is generally based on a floor design (for example, total height under floor, durability, etc.) and laminated with a single plate having a thickness appropriately selected from the above range (preferably 3 or more layers). To form a multi-layered precursor, and then integrate it by fixing means such as stitching, rivet fastening, bolt nut fastening, screw nails, etc., or epoxy-based or rubber-based adhesive etc. for each laminated veneer It is manufactured by a method such as spot-shaped or partially-bonded and integrated by using, and in particular, as a method for manufacturing this multilayer structure, a suturing method is optimally used in terms of workability and production efficiency. .

In the production of the multilayer structure by the above method, there is no particular limitation on the method for laminating the veneers, but in general, the strength of the multilayer structure, the holding power of the fixture, etc. It is desirable to stack them so that they alternate with each other.
One of the front and back surfaces or the front and back surfaces of the multilayer precursor may be coated with a face material described below to avoid improper fixing.

Even if a soft material such as paper, non-woven fabric, woven fabric, film, plastic foam sheet, rubber sheet, or insulation board is inserted in the multilayer structure, the effect as the sound insulation floor material of the present invention is impaired. Or, depending on the kind of the material, the soft material works almost the same as the essential veneer, so that such a soft material may be inserted in the above-mentioned multilayer structure in the flooring of the present invention. At this time, generally adhering the soft material to the wood-based veneer is preferable to avoid the loss of flexibility of the wood-based veneer.

Examples of the face material include paper, non-woven fabric, woven fabric, film, plastic foam sheet, rubber sheet, soft material such as insulation board in the case of a stitching method, and rivets, when tightening with screw nails, etc. Hard materials such as plywood, particle board, and plastic plates are used, and the thickness of these face materials is usually preferably 3 mm or less.

Further, there is no particular limitation in fixing, and in the case of suturing, the area between the warp and weft threads is preferably 50 cm ² or less with a tatami machine or the like, and 20 cm ² or less is preferable when secondary processing such as cutting a floor material is required.
It is also possible to sew only longitudinal stitches or horizontal stitches at intervals of 20 to 100 mm.

On the other hand, when tightening with rivets, bolts, nuts, etc., or fixing with spots or partial adhesion, it depends on the holding power of the fixture or the type of adhesive, but usually an interval of 50 to 450 mm is appropriate. In the case of adhesion, it is desirable to consider so that the adhesion points of the layers do not overlap.

The wood-based floor finishing material used in the present invention is a wood-based floor finishing material generally used in the art, for example, wood-based materials such as plywood, hard board, particle board, veneer, decorative paper, and decorative board. It is a wooden floor finishing material known as an art floor, hardboard floor, homogen floor, mosaic parquet, etc. that is laminated with synthetic resin etc., its thickness is usually from the viewpoint of sound insulation performance. It is limited to 6 mm or less, preferably 1 to 4 mm.

When the thickness of the wooden floor finishing material exceeds 6 mm, the sound insulation performance as the floor material cannot be improved. When directly laminating a hard surface material such as a laminated uppermost layer veneer or plywood, a plastic plate and the floor finishing material, the uppermost layer veneer or the surface material has the same function and effect as the wooden floor finishing material. In order to reduce the sound insulation performance, it is necessary to select the floor finishing material thickness so that the total thickness of the top veneer or surface material and floor finishing material is 6 mm or less.

The wood floor material of the present invention is fixed to the surface of the multilayer structure by a conventional joining method such as a nailing method using wood screws or the like, or a bonding method using an appropriate adhesive or the like. It is manufactured integrally, and in some cases, it can be manufactured in the same manner at the construction site.

Further, the thickness of the wooden floor material is not particularly limited and can be selected as desired, but a comfortable living space is secured, construction cost is reduced by reducing the total height under the floor, etc. From the aspect, usually, 40 mm or less is appropriate, preferably 30 mm or less, more preferably 20 mm or less, the wood flooring material of the present invention, the floor significantly larger than conventional without impairing sound insulation performance. It has the important advantage that the total height can be reduced.

The sound-insulating wood-based flooring material of the present invention thus produced is
Usually, a method of laying the flooring material via an adhesive or mortar on a base such as a concrete slab, or after laying a multilayer structure according to the present invention on the base via an adhesive or mortar, Floor construction is performed by, for example, a method of stretching a wooden floor finishing material according to the present invention thereon. The sound insulation flooring material of the present invention may be laid on a base material via a soft material such as felt, but this is not desirable in order to avoid the occurrence of mites and the like.

When laying a floor material, as shown in FIG. 1, a floor material 3 formed by joining a multilayer structure 1 and a wood-based floor finishing material 2 is simply butted together and a base material 4 such as a concrete slab is formed. It may be laid on top with an adhesive 5,
The multilayer structure 6 and the wood-based floor finishing material 7 as shown in FIG.
As shown in FIG. 3, the flooring material 9 which is formed by joining and forming a gap (ajakuri) part 8 is glued on the base 4 while the gaps 8 are joined together. It is preferable to lay using.

In the floor constructed by the flooring material of the present invention, further using a carpet, a vinyl chloride sheet or the like on the floor according to the taste does not impose any restriction on the present invention, and as is well known, it is additionally a lightweight floor impact. The sound can be improved.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

Example 1 Three sliced lauan veneers (1.4 mm) were sequentially laminated on a kraft paper backing material so that the wood grains were alternately arranged, and then a kraft paper surface material was placed to prepare a multilayer precursor. did. Next, this was put into a tatami machine and sewn with polyester tatami yarn so that the area between the warp and weft threads was 8 cm ² , and the thickness was 4.6 mm to produce a multilayer structure having a length of 450 mm and a width of 450 mm. A decorative plywood (4 mm) with a 0.5 mm cherry wood-clad board laminated on it as a wood-based floor raising material is bonded with a rubber-based adhesive, leaving a 20 mm gap, as shown in FIG. 2. A system floor material A was obtained.

Referring to FIG. 3, which is a side sectional view showing an example of a floor structure constructed in a 6-tatami room of a 3DK house, a base 4 (thickness 150 mm
Concrete slab) on the above-mentioned wooden floor material 9
Is bonded and fixed using an epoxy adhesive 5 (ME-510, manufactured by Mitsui Toatsu Co., Ltd.), and the mixing section 8 of the floor material 9 and the multi-layer structure portion of the floor material 9'adjacent to the rubber material Bonding was performed with a system adhesive. Similarly, the wooden floor according to the present invention was constructed by sequentially laying.

Sound insulation performance is measured in accordance with JIS A1418 "Measurement method of floor impact sound level on site", and a bang machine (Heavy floor impact sound generator manufactured by Satsuki Seisakusho) or a tapping machine (Brel & Kjr lightweight made on a wooden floor constructed. Floor impact sound generator) is installed, and the floor surface is struck and 1 /
The sound pressure level for each octave band was measured.

As a result, as shown in Table 1, the sound insulation grade according to the Japan Institute of Architecture is a heavy floor impact sound of class 2, a light floor impact sound of class 2, and it has good sound insulation performance that belongs to comprehensive evaluation class 2. Was confirmed. (In addition, the comprehensive evaluation of the sound insulation performance is generally determined by the weight or light weight floor impact sound, whichever is worse.) The floor constructed using the wood floor material of the present invention has impaired sound insulation performance. It was confirmed that the floor height can be reduced compared to conventional felt carpet floors (floor construction method with the lowest total floor height among practical floors). Further, the flooring material of the present invention includes a multilayer structure in which wood-based veneers are laminated and fixed and integrated by a fixing means such as stitching without being substantially adhered, and since a suitable cushioning property is maintained, comfort is achieved. It was possible to provide practical habitability (safety in case of a crash, walking comfort, heat insulation, etc.) and to put it into practical use as a hygienic wooden floor material that can prevent the occurrence of mites.

Examples 2 to 5 and Comparative Example 1 Lauan veneer (1.4 mm) has 5 layers, 7 layers, 10 layers, 20 layers.
Wood flooring materials B, C, D and E of the present invention were produced in the same manner as in Example 1 except that the multi-layer precursor of the layer was used.

On the other hand, for comparison with the present invention, a control floor material N was produced in the same manner as in Example 1 except that one plywood (15 mm) was used in place of the multilayer precursor.

Next, in order to investigate the performance of these floor materials, each floor was constructed according to the floor construction method described in Example 1 except that each of the floor materials B to E and the control floor material N was used in place of the floor material A. The sound insulation performance was measured. As a result, as shown in Table 1, while the sound insulation performance (comprehensive evaluation) of the comparative floor is out of the grade, all the floors according to the present invention have the grade 2 and have excellent sound insulation performance. , And the effect on the sound insulation performance of the multilayer structure was confirmed.

Example 6 Five sliced lauan veneers (1 mm) were sequentially laminated on a 2.5 mm plywood backing material so that the grain of the wood was alternated, and then a 2.5 mm thick plywood surface material was placed thereon to give a thickness of 10.8. mm multi-layer precursors were formed and then riveted at intervals of 100 mm in length and width to prepare a multi-layer structure a according to the present invention having a length of 450 mm and a width of 450 mm.

Next, in the 6-tatami room used for floor construction of Example 1, referring to FIG. 4 which is a cutaway sectional view showing an example of the floor structure constructed on site using the multilayer structure a, the base 4 ( On the concrete slab (thickness 150 mm), the multilayer structure 1
0 was adhesively fixed using an epoxy adhesive 5 (ME-510). After laying it in the same way, put cypress makeup plywood on it
11 (1.5 mm) was adhesively stretched with a rubber adhesive to construct a wooden floor according to the present invention.

Next, as shown in Table 1, the sound insulation performance of the wooden floor measured according to the method described in Example 1 holds a comprehensive evaluation class 2, and other performances are the same as those in Example 1. It was practically comparable.

Examples 7-9 and Comparative Examples 2-3 In place of the lauan veneer having a thickness of 1 mm, the thickness is 1.4 mm, 3.5 mm, 6 mm,
The multilayer structures b, c, d, e according to the present invention and the control multilayer structure m (single plate thickness 8 mm), l (single plate) are used in the same manner as in Example 6 except that 8 mm and 10 mm lauan veneers are used. (Plate thickness 10 mm)
Was produced.

Next, each floor was constructed according to the floor construction method described in Example 6 and its sound insulation performance was measured. As a result, as shown in Table 1, while the sound insulation performance (comprehensive evaluation) of the control floors (Comparative Examples 2 and 3) was grade 3 or out of grade, all the floors according to the present invention were 2 or higher. Holds the grade and the veneer thickness is
It was confirmed that the sound insulation performance deteriorates when the thickness exceeds 6 mm.

Examples 10 and 11 and Comparative Examples 4 and 5 Lauan veneer sandwiched between kraft paper front and back materials (thickness 1.4 m
m) Multi-layered structure consisting of 7 layers, and laminated decorative plywood with a 0.5 mm cherry tree board as a wood-based floor finishing material (thickness 2 mm, 6 m
m, 8 mm and 12 mm) except that the wooden floor materials F (2 mm thick decorative plywood), G (6 mm thick decorative plywood) and control floor material S (8 mm thick decorative plywood) of the present invention are used in the same manner as in Example 1. ), Same R
(12 mm thick decorative plywood) was produced.

Next, according to the floor construction method described in Example 1, a floor was constructed using these floor materials, and the sound insulation performance of each floor was measured.

As a result, as shown in Table 1, the comprehensive evaluation of the control floors (Comparative Examples 4 and 5) was the applicable grade 3, whereas the floors according to the present invention all had the grade 2. It was confirmed that when the thickness of the floor finishing material exceeds 6 mm, the sound insulation performance deteriorates by one rank.

Conventional floor example 1 Synthetic fiber punch felt (thickness: 10 mm) on the entire surface of the concrete slab in the 6-tatami room used for floor construction in Example 1.
After constructing a felt-carpet floor of the prior art by sequentially laying a nylon carpet (thickness: 9 mm), the sound insulation performance was measured by the measuring method described in Example 1. As a result, as shown in Table 1, the sound insulation performance of Class 2 was maintained (comprehensive evaluation), but the carpet sank during walking and the bare feet felt the rigidity of the concrete, so comfortable living. It was hard to say that they had sex.

Conventional floor example 2 On the concrete slab of the 6-tatami room used for floor construction in Example 1, glass wool (25 mm thick), anti-vibration rubber (thickness)
3mm), particle board (thickness 20mm) and plywood (thickness 12mm) are laid in sequence, and floor finishing material (thickness)
6mm) was stretched and fixed with nails to construct a conventional direct floor.

Subsequently, as a result of measuring the sound insulation performance of this direct floor according to the measuring method described in Example 1, the sound insulation performance of the floor was comprehensively evaluated because the sound insulation grade of the heavy floor impact sound was poor as shown in Table 1.
It was class.

Conventional floor example 3 Styrene foam (thickness 50 mm) was laid on the concrete slab of the 6-tatami room used for floor construction in Example 1, and plywood (thickness 15 mm) was laid on it as a wood-based floor finishing material. Adhesive fixing was used to construct a conventional floor covering.

Subsequently, as a result of measuring the sound insulation performance of this upholstered floor according to the measuring method described in Example 1, the application grade of the lightweight floor impact sound is poor as shown in Table 1, and the sound insulation performance (comprehensive evaluation) of the floor is It was out of class.

[Effects of the Invention] As is clear from the above description, the sound insulation wood-based flooring material of the present invention is comparable to the conventional felt-carpet floor, and can improve the sound insulation performance of one rank or more than the wood-based floor. It can provide an excellent wooden floor.

In addition, the felt-carpet floor not only provides safety in the event of a crash, but also solves environmental hygiene problems such as the occurrence of mites and ensures comfortable habitability.
Even if it is less than or equal to mm, sound insulation performance equivalent to that of a carpet floor is maintained, thus providing a comfortable living space in combination with the advantage that existing carpet floors and wooden floors can be renovated at low cost. The utility value in this technical field is extremely high.

[Brief description of drawings]

FIG. 1 is a side sectional view of a floor structure constructed by using the wood-based floor material of the present invention, and FIG. 2 is a perspective view of a synthetic-type wood-based floor material of one example of the wood-based floor material of the present invention, FIG. 3 is a side sectional view of a floor structure constructed by using the wooden floor material of the potting type shown in FIG. 2, and FIG. 4 is a base structure using the multilayer structure and the wooden floor finishing material according to the present invention. It is a sectional side view which shows an example of the constructed wooden floor structure. 1 ... Multilayer structure, 2 ... Wood floor finishing material, 3 ... Floor material, 4 ... Base (concrete slab), 5 ... Adhesive, 6 ... Multilayer structure, 7 ... Wood floor Finishing material, 8,8 '
...... Government department, 9,9 '…… Floor material, 10 …… Multilayer structure, 11…
… Wooden floor finishing material.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuo Tamemoto 26-4 Niitsu Niiyama, Fuso-cho, Niwa-gun, Aichi Prefecture Asahi Organic Materials Co., Ltd. Aichi factory

Claims (2)

[Claims] 1. A multi-layered structure in which wood-based veneers having a thickness of 6 mm or less are laminated and the whole surface is partially fixed without being bonded and fixed, and a wood-based floor finishing material having a thickness of 6 mm or less is joined. A sound insulation wooden flooring that is a body. 2. The sound insulation wooden floor material according to claim 1, wherein a surface material is arranged on the front surface and / or the back surface of the multilayer structure.