JPH0782870A - Sound insulating floor plate for laying - Google Patents

Abstract

PURPOSE:To shorten the construction time by sequentially stacking and sticking a high specific binding material and a fiber yarn buffer material on the back of a wood base plate which is so constructed that a decorative layer is formed on the surface and plural grooves are formed on the back. CONSTITUTION:A natural wood decorative veneer or a reinforced decorative sheet is stuck to the surface of a wood base plate formed by a wodd plate such as plywood, a unit stacking material, a particle board or the like through an adhesive, or coating material is applied to form a decorative layer 1. Plural grooves 3 are formed on the back of the substrate 2. A binding material 4 formed by rubber material such as natural rubber, styrene-butadiene rubber or synthetic resin such as soft vinyl chloride resin or the like is stuck to the lower surface of the base plate 2 through an adhesive such as water vinyl urethane, latex denatured urea resin or the like. Further, a sheet-like buffer material 5 formed of nylon, polyester, polyvinyl chloride, acryl or the like is stuck to the lower surface of the binding material 4 through an adhesive such as water vinyl urethane or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction of a soundproof floor board for a floor, which is mainly used for detached houses.

[0002]

2. Description of the Related Art The floor above a two-story detached house is constructed by directly applying a floorboard made of decorative plywood or the like having a thickness of about 15 mm on the joist with nails or adhesives. Although the impact sound propagated directly downstairs (when the light-duty floor impact test performed on a concrete floor slab was conducted in a detached house, the sound insulation rating was about L-80), it was not seen as a problem as in an apartment house. It was

[0003]

However, recently, due to changes in user needs, noise on the floor of a detached house has been suddenly noticed, and a floor structure having soundproofing performance similar to that of a direct-adhesive floorboard for an apartment house. Is required. Therefore,
In order to meet this requirement, a structure has been proposed in which a particle board is constructed on a joist as a siding board, and then a floor board made of a relatively thin decorative plywood having a thickness of about 6 mm is constructed on the joist. However, in this method, since the rubber sheet and the floorboard are used together with adhesives and nails, curing is necessary, and after the rubber sheet is constructed, the floorboard cannot be immediately constructed on the top surface of the rubber sheet. It was very time consuming. Further, when the floor board is reformed, it is difficult to peel it off because the floor board is firmly fixed with an adhesive, and it takes a lot of time and labor to replace the floor board.

[0004]

The present invention has been made to solve the above-mentioned problems, and the soundproof floor board for laying down according to claim 1 has a decorative layer formed on the front surface and a back surface from the back surface. The present invention is characterized in that a binding material having a high specific gravity and a fiber-based cushioning material are sequentially laminated and adhered to the back surface of a wooden board having a plurality of grooves formed therein.

The present invention will be described in detail below.

FIG. 1 shows a soundproof floorboard for laying the floor according to the present invention.
Is a decorative layer, 2 is a wooden substrate, 3 is a groove, 4 is a restraining material, and 5 is a cushioning material.

The wooden substrate 2 is made of plywood or laminated veneer (LVL,
LVB), particle board, medium density fiberboard (MD
F) or other wooden boards, or a composite of them, having a thickness of 5 to 12
The decorative layer 1 is formed by adhering a natural wood decorative veneer, a reinforced decorative paper, a vinyl chloride resin sheet, or the like via an adhesive or directly coating a paint on the surface thereof with a thickness of about mm. In addition, when a natural wood decorative veneer is attached, it is preferable to interpose a Japanese paper or the like between the veneer and the wood substrate 2 because cracking of the veneer due to absorption and release of water can be prevented.

A plurality of grooves 3 are formed on the back surface of the wooden substrate 2. The width is 1.0 to 1.5 mm and the pitch is 40 to 60 mm. The depth of the groove 3 depends on the thickness of the wooden substrate 2, and in any case, it is formed up to the substantially central portion. For example, a 5-ply plywood sheet having a thickness of 9 mm is cut to a depth of 2.5 mm. In addition, in order to improve the workability as a floor board, it is advisable to form concavities and convexities for bonding on the peripheral edge portion.

On the lower surface of the wooden substrate 2, a restraining member 4 made of a rubber material such as natural rubber, styrene-butadiene rubber, urethane rubber or the like having a thickness of about 2 to 5 mm, and a synthetic resin such as soft vinyl chloride resin is aqueous vinyl urethane. , And latex-modified urea resin or the like. Note that the restraint member 4
Is mixed with a filler such as Alfalto and calcium carbonate to adjust the specific gravity to about 1.0 to 1.6.

A cushioning member 5 made of nylon, polyester, polyvinyl chloride, acrylic, polypropylene or the like is formed on the lower surface of the restraining member 4 in a sheet shape having a thickness of about 1 to 3 mm.
Is adhered via an adhesive such as water-based vinyl urethane or latex modified urea resin. The fibers may form a solid three-dimensional network by heat fusion to increase the rigidity, or may be made into a sheet and then impregnated with a synthetic resin to improve elasticity.

[0011]

The restraint material having a high specific gravity according to the present invention suppresses warpage and roughening caused by forming a decorative layer such as a decorative veneer on the surface of a wooden substrate. In addition, by forming a groove on the back surface of the wooden board, appropriate flexibility is given to the floor board itself, and further, the warp and flare return are promoted, and the warp and flare are effectively suppressed together with the high specific gravity restraint material. To do. Further, the fibrous cushioning material attached to the lower surface of the high specific gravity restraint material absorbs the unevenness of the floor base and blocks the noise generated by the impact from the floor surface.

The embodiments of the present invention will be described below.

[0013]

Example: A wood veneer made by laminating three 3-ply plywood sheets with a thickness of 2.5 mm is pasted with a veneer veneer having a thickness of 0.3 mm and a width of 1.5 mm from the back surface. , Depth 4.
A plurality of grooves having a pitch of 5 mm and a pitch of 50 mm were formed, and a binding material having a thickness of 3 mm adjusted to have a specific gravity of 1.55 by mixing asphalt with styrene-butadiene rubber was attached to the lower surface thereof. And the polyester fiber is 2 mm thick on the lower surface.
The sheet-shaped cushioning material was adhered to obtain the desired soundproof floorboard for laying.

This soundproof floorboard for laying was applied on a joist on the second floor of a detached house with a particle board having a thickness of 15 mm as a siding board, and then laid on the upper surface thereof. As a comparative example, a 6-mm-thick asphalt-containing sheet was applied on the siding board with an adhesive and a nail, and then a floor board made of a decorative plywood with a thickness of 6 mm was applied on the upper surface with the adhesive and a nail.

Then, a lightweight floor impact sound from a tapping machine was applied from the top of each, and the noise for each frequency was measured using a sound level meter downstairs. As shown in FIG. The soundproof floor plate had L-76, and the comparative example had L-80. With the soundproof floorboard for laying of this invention, the construction could be done in a very short time by simply laying it on the upper surface after constructing the siding board. On the other hand, in the comparative example, since it was necessary to set the curing time for each of the rubber sheet and the floor plate, it took a very long time for the construction. Moreover, it is clear from the results of the sound insulation class test that the sound insulation performance is slightly improved.

[0016]

According to the present invention, since the work of applying the adhesive to the floor base can be omitted, the construction time can be greatly shortened, and at the time of reforming, the floor board is simply placed on the floor base. Therefore, it can be easily removed and the floorboard can be refilled smoothly. Moreover, the sound insulation performance can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a soundproof floorboard for laying floor according to the present invention.

[Figure 2] Sound insulation class test results

[Explanation of symbols]

 1 Decorative layer 2 Wood substrate 3 Groove 4 Restraint material 5 Buffer material

Claims (1)

[Claims] 1. A binding material (4) having a high specific gravity and a fiber system are provided on the back surface of a wood substrate (2) having a decorative layer (1) formed on the front surface and a plurality of grooves (3) formed from the back surface. A soundproof floorboard for laying down, characterized in that a cushioning material (5) is sequentially laminated and stuck.