JP2547947Y2 - Wooden soundproof floorboard - Google Patents

Description

[Detailed description of the invention] Industrial application This invention is mainly a wooden floorboard that is directly adhered to the concrete floor slab of an apartment house, and is specifically a living vibration or noise (light weight floor impact sound). The present invention relates to a wood-based composite sound insulating floor board for preventing the transmission of a floor to a neighboring room or a lower floor room through a floor slab.

Conventional technology Conventionally, floorboards that are constructed by attaching directly to a floor slab of an apartment house or the like using plywood or the like as the base material have a thickness of less than 12 mm with a thin veneer attached to the surface. 2 on the back of
Generally, a foam synthetic resin sheet with a cushion property of about 4 mm is attached, and the foam sheet on the back side has cushioning property, so as to absorb unevenness on the slab surface and improve walking feeling etc. Although it was effective, the effect of preventing noise from propagating through the floorboard could hardly be expected.

On the other hand, in order to cut off normal living noise on the wooden floorboard, the floorboard is supported on the floor slab with a stand to provide a space to minimize the contact between the slab and the floorboard, and the thickness between the floor slab and the floorboard However, a high-density glass wool mat having a thickness of about 25 mm and a vibration-proof rubber having a hardness of about 60 to 90 degrees and a thickness of about 25 mm have been entirely interposed.

However, floors that have a stand between the floorboard and the slab, or that have glass wool or vibration-proof rubber interposed, not only increase the floor height and lower the height to the ceiling to reduce the indoor space, but also Also required special construction methods and could not be constructed by ordinary carpenters.

Therefore, a vibration-damping composite flooring made by laminating a polymer foam on the lower surface of a laminated plate obtained by laminating a viscoelastic body between a plurality of wood-based plates is disclosed in JP-A-63-78961. Density is 50 on the lower surface of the laminated board made by laminating viscoelastic material between wood-based boards.
JP-A-63-78960 proposes a soundproof flooring material to which a fibrous substance having a thickness of up to 200 kg / m ³ and a thickness of 5 to 150 mm is adhered.

However, in these materials, a sound-insulating material having low flexibility is attached to the lower surface of the laminated board material, and the wooden board material attached to the upper surface also lacks flexibility, so that it is difficult to fit into the floor substrate, and therefore, In addition, there is a drawback in that it takes time and effort to process the floor substrate and the workability is poor.

A sound-insulating flooring material in which a surface material and a hard backing material are respectively laminated via elastic sheets on both surfaces of a base material having a plurality of kerfs formed in a thickness direction, and a cushioning material is attached to a lower surface of the backing material. Has been proposed as JP-A-1-142169.

Although this material has improved flexibility of the base material as compared with the conventional example described above, it does not have the technology of imparting flexibility to the lowermost cushion material, and has neither a sound insulation performance nor a workability. It is unsatisfactory.

Problems to be solved by the invention The purpose of the invention is to achieve a high sound insulation effect and achieve L-45 despite the overall thickness being thinner than the conventional one,
It is an object of the present invention to provide a wooden soundproof floor panel which is excellent in feel and strength at the time of walking and which can be easily applied to a floor base and constructed.

Means for Achieving the Object The wood-based sound-insulating floorboard of the present invention has been made to achieve the above-mentioned object, and its structure is a thin decorative veneer 1 on the surface.
Is attached to the lower surface of the wooden decorative board 2 having a thickness of about 2.5 to 3.5 mm with a thickness of 10 to 40 degrees using a C-type hardness meter specified in JIS K 6301 via an adhesive. A rubber or synthetic resin sheet 3 of 0.5 to 2 mm is adhered, a wooden substrate 4 having a thickness of about 3 mm is adhered to the lower surface of the sheet 3 via an adhesive, and an adhesive is adhered to the lower surface of the plywood 4. A rubber or synthetic resin sheet 5 having a thickness of 1 to 3 mm and a thickness of about 3 mm is attached to the lower surface of a rubber or synthetic resin sheet 5 having a hardness of 10 to 40 degrees according to a C-type hardness meter specified in JIS K 6301. The substrate 6 is adhered, a plurality of kerfs extending from the lower surface of the wooden substrate 6 to the wooden substrate 4 above the substrate 6 are formed at regular intervals, and further measured on the lower surface by a method specified in JIS L 1096. The thickness
The cloth-like material 7 having a bulk specific gravity in the range of 3.5 to 20 mm and a specific gravity of 0.02 to 0.15 is stuck.

Wood veneer 2 is plywood, particle board, MDF, LVL
Is a decorative plate having a thickness of 2.5 to 3.5 mm on which a common thin decorative veneer 1 having a thickness of about 0.2 to 0.5 mm is adhered on the surface thereof. The decorative board on the surface is preferably thin, but if it is too thin, it will break due to the load from the surface and cause a problem in the durability performance as a floorboard, so the range of 2.5 to 3.5 mm is preferable.

And, on the lower surface of the wooden decorative board 2 via an adhesive
Hardness by C-type hardness tester specified in JIS K 6301 is 10-40
Rubber or synthetic resin sheet 3 with thickness of 0.5 to 2 mm in the range of degrees
Is affixed.

A wooden substrate 4 having a thickness of about 3 mm is adhered to the lower surface of the rubber or synthetic resin sheet 3, and a rubber or synthetic resin sheet 5 having a hardness of 10 to 40 degrees and a thickness of 1 to 2 mm is adhered to the lower surface. And attach a wooden substrate 6 with a thickness of about 3 mm to the lower surface,
Further, a cloth 7 having a thickness of 3.5 to 20 mm and a bulk specific gravity of 0.02 to 0.15 measured by the method specified in JIS L 1096 is adhered to the lower surface.

As the cloth-like material 7, a light and bulky cloth-like material such as a woven fabric, a nonwoven fabric, and a felt can be used.

Adhesion between the rubber or synthetic resin sheets 3,5 and the wooden substrates 2,4,6 is performed using a conventional synthetic resin-wood-based adhesive, for example, a synthetic resin adhesive such as rubber-based, urethane-based or acrylic-based resin. .

A common synthetic resin adhesive such as rubber, vinyl, melanin, or phenol resin is used for the adhesion between the wooden substrate 6 and the cloth 7.

In addition, cut grooves 8 having a width of about 3 mm are formed at regular intervals from a lower surface of the plywood 6 to a position reaching the plywood 4 in a short side direction.

The actual processing may be applied to the periphery of the wood-based sound-insulating floor material in order to improve workability.

Action In claim 1 of the present invention, the thickness of the essentially decorative board 2 is reduced.
The reason why the thickness is limited to 2.5 to 3.5 mm is that it is experimentally known that, generally, the surface of a decorative board that emits sound is thinner and softer, so that less sound is generated. However, care must be taken when the thickness of the decorative board 2 is less than 2.5 mm because the decorative board 2 is cracked by a load from the surface and causes a problem in durability performance as a floorboard.

The reason for limiting the hardness and thickness of the rubber or synthetic resin sheet 3 attached to the lower surface of the wooden decorative board 2 to 0.5 to 2 mm in the range of 10 to 40 degrees is that the hardness of the rubber or synthetic resin sheet 3 is low, The thicker the better the soundproofing effect, but if the hardness is 10 degrees or less or the thickness is more than 2 mm, the floor will sink due to partial load, and when connecting multiple floorboards, This is because a step is easily generated on the connection surface.

The reason for limiting the thickness of the wooden substrate 4 to a range of about 3 mm is as follows.
This is because the overall thickness of the floorboard is kept as thin as possible and has practical strength.

Limiting the thickness of the foamed rubber or synthetic resin sheet 5 to be attached to the lower surface of the wooden substrate 4 to 1 to 3 mm, and limiting the hardness by a C-type hardness meter to the range of 10 to 40 degrees is that the hardness is 10 If the thickness is 4 degrees or less and the thickness is 4 mm or more, it is too soft as a floorboard,
It causes a problem in its performance.

The reason why the thickness of the wooden substrate 6 to be attached to the lower surface of the foamed rubber or synthetic resin sheet 5 is limited to a range of about 3 mm is the same as that of the wooden substrate 4, while keeping the overall thickness of the floor board as thin as possible. This is because it has practical strength.

The thickness of the cloth 7 adhered to the lower surface of the wooden substrate 6 is JIS
The measurement value by the method prescribed in L 1096 is in the range of 3.5 to 20 mm, and the bulk specific gravity is limited to the range of 0.02 to 0.15,
This is because the vibration transmitted from the surface of the floorboard is absorbed more effectively by the thick and low specific gravity cloth material 7, but the bulk specific gravity is reduced to 0.
When the thickness is less than 02 or the thickness is more than 20 mm, it becomes too fluffy and it is easy to cause problems in the function as a floorboard. When the bulk density of the object 7 is in the range of 0.02 to 0.15 and the thickness is 3.5 mm or more, the sound insulation class (L) value is L
-45 was found to pass.

In addition, the impact sound is dispersed and absorbed by the fibers of the cloth,
Since the cloth-like material is richer in flexibility than other fibrous building materials, the cloth-like material adheres to and adheres to the unevenness of the floor substrate.

Furthermore, the kerf formed so as to reach the wooden substrate 4 from the lower surface of the wooden substrate 6 increases the flexibility of the floor panel, further improves workability, and prevents the floor panel from warping.

Since the foamed rubber or synthetic resin sheets 3 and 5 are made into two layers and the wooden substrates 4 and 6 are provided on the upper and lower layers and the intermediate layer, even if a concentrated load is generated on the surface of the floorboard, the load is reduced to a plurality of layers. Is dispersed by the wood substrate.

Example 2 mm thick wooden board 6 made of plywood having a thickness of 3 mm
A rubber-based vibration-damping sheet 5 with a hardness of 27 degrees using a C-type hardness tester specified in JIS K 6301, a wooden board 4 made of plywood with a thickness of 3 mm, and a C-type hardness specified in JIS K 6301 with a thickness of 1 mm Rubber damping sheet 3 with a total hardness of 27 degrees, 2.5 mm thick veneer 1 with a thickness of 0.5 mm attached to the surface of a 2 mm thick plywood
The wooden decorative board 2 is bonded in this order with an adhesive, and cut grooves having a width of about 3 mm at intervals of 10 cm from the lower surface of the wooden board 6 to the position reaching the wooden board 4 along the short side direction of the floorboard. Formed on the lower surface of the lowermost wooden substrate 6 with a thickness of 10 mm measured by the method specified in JIS L 1096 and a specific gravity of 0.03.
The cloth-like material 7 made of the non-woven fabric was adhered to obtain the desired wood-based soundproof floorboard.

This floor slab was fixed on a 150 mm thick concrete floor slab using an adhesive, a light impact sound was applied from the upper surface of the floor slab using a tapping machine, and the noise for each frequency was measured using a sound level meter on the lower surface of the slab. , Sound insulation rating (L) value was determined.

As a result of the test, as shown in FIG.
Performance.

Effect of the present invention The wood-based soundproof floorboard of the present invention has a thickness of 2.5 as described above.
The thickness of 0.5 to 2 in the range of hardness of 10 to 40 degrees by C type hardness meter specified in JIS K 6301 on the lower surface of wooden decorative board of ~ 3.5 mm
A rubber or synthetic resin sheet with a thickness of about 3 mm is attached to the lower surface of the sheet, and a wooden substrate with a thickness of about 3 mm is attached to the lower surface of the sheet.
Hardness is 10 to 40 by C-type hardness tester specified in IS K 6301
A rubber or synthetic resin sheet with a thickness of 1 to 3 mm in the range of degrees is adhered, a wooden substrate of about 3 mm in thickness is again adhered to the lower surface, and further according to the method specified in JIS L 1096 on the lower surface When the measured thickness is in the range of 3.5 to 20 mm, the bulk specific gravity is 0.02 to 0.1
Since the cloth 7 in the range of 5 is stuck, the surface is of wood type and the overall thickness is very thin compared to the conventional sound insulation flooring, and despite the thickness of about 20 mm Since the sound insulation grade L-45 can be achieved while maintaining the strength as a flooring material, it can be used effectively without reducing the indoor space.

Further, the sound transmitted from the upper surface is dispersed and absorbed by the fibers of the cloth-like material, and as a result, the sound insulation performance is greatly improved. Furthermore, the cloth material is rich in flexibility compared to other fibrous building materials,
Since the wood substrate is provided with flexibility by the kerfs, it is easy to adapt even if there is unevenness in the floor substrate, the labor of floor substrate treatment is reduced, and the workability is good.

In addition, since the cloth-like material, rubber or synthetic resin sheet has cushioning properties, it is excellent in walking feeling, and even when concentrated load is applied to the floorboard, it is dispersed on a plurality of layers of wooden substrates, so that strength is high and durability is high. Rich in nature.

[Brief description of the drawings]

FIG. 1 is a sectional view of a floor panel according to an embodiment of the present invention, and FIG.
The figure shows the results of a sound insulation class test of a floor panel by a lightweight floor impact test. 1-decorative veneer, 2-wooden decorative board 3-sheet, 4-woody substrate 5-sheet, 6-woody substrate 7-cloth, 8-cut groove

Claims (1)

(57) [Scope of request for utility model registration] 1. Specified in JIS K 6301 on the lower surface of a wooden decorative board (2) having a thickness of about 2.5 to 3.5 mm with a thin decorative veneer (1) adhered to the surface via an adhesive. A rubber or synthetic resin sheet (3) having a hardness of 10 to 40 degrees and a thickness of 0.5 to 2 mm by a C-type hardness meter is adhered, and the thickness of the sheet (3) is reduced with an adhesive on the lower surface. A wooden substrate (4) having a thickness of about 3 mm is adhered, and the thickness of the wooden substrate (4) is in the range of 10 to 40 degrees and a thickness of 1 to 40 degrees by a C-type hardness meter specified in JIS K 6301.
A rubber or synthetic resin sheet (5) of about 3 mm is adhered, and a wooden substrate (6) having a thickness of about 3 mm is adhered to the lower surface thereof,
A plurality of kerfs extending from the lower surface of the wood substrate (6) to the wood substrate (4) above the wood substrate (6) are formed at regular intervals, and the lower surface has a thickness measured by a method specified in JIS L 1096. The bulk specific gravity is 0.02 in the range of 3.5 to 20 mm
A wood-based sound-insulating floorboard to which a cloth-like material (7) in the range of ~ 0.15 is stuck.