JPH084262A - Woody soundproof insulating floor board - Google Patents

Abstract

PURPOSE:To ensure the mutual fitting of floor boards and prevent the breakage of the connecting part by an excessive force at the fitting by enhancing the strength and working precision of the connecting part in a woody soundproof floor board having a damping layer positioned in the connecting part. CONSTITUTION:In a woody soundproof floor board having a butt plate stuck plywood 1, a damping layer 2, and a plywood base plate 3 successively laminated and integrated, a lining single plate 4 equal to the butt plate 1a on the surface is stuck to the reverse surface of the plywood base plate 1b of the butt plate stuck plywood 1 in the same condition. The fiber directions of the surface and reverse single plates 1c, 1d of the plywood base plate 1b of the butt plate stuck plywood 1 are set parallel to the longitudinal direction of the floor-board. Connecting recessed and protruding parts 5 are formed in the position including the reverse single plate 1d of the plywood base plate 1b of the butt plate stuck plywood 1, the lining single plate 4, the damping layer 2, and the surface single plate 3a and core layer single plate 3b of the plywood base plate 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden soundproof floorboard used for a detached house or an apartment house.

[0002]

2. Description of the Related Art In Japanese Utility Model Publication No. 5-40190, the first plywood,
In a wooden soundproof floor board in which a damping layer, a second plywood, and a buffer layer are sequentially laminated and integrated, a first plywood and a second plywood, each of which has at least two veneers and a damping layer It has been proposed that a structure having irregularities is formed, and the load strength acting on the joint in the bending direction is increased, and the toughness of the joint is improved.

[0003]

However, in the above-mentioned structure, the single plate appearing at the joint has a structure close to one layer, so that the strength is practically insufficient. Also,
The core layer veneer of the first plywood is exposed at the joint portion, but since the fiber direction is the lateral direction of the floorboard, the processing direction of the joint portion is orthogonal to the fiber direction, resulting in fluffing and finishing. There is also a problem that the joint becomes unreliable and the joint becomes unreliable.

[0004]

According to the present invention, in a wood-based soundproof floorboard in which a veneer-bonded plywood, a damping layer, and a plywood board are sequentially laminated and integrated, the veneer-bonded plywood is equivalent to a front surface veneer on the back surface of the plywood board. The backing veneer is attached under the same conditions,
And the fiber direction of the front and back veneers of the plywood board of the veneer-bonded plywood is parallel to the longitudinal direction of the floor board, and the back veneer of the plywood board of the veneer-bonded plywood, the backing veneer, the damping layer, and the front veneer of the plywood board The present invention is characterized in that a concavo-convex for joining is formed at a position including the core layer single plate.

[0005]

According to this invention, since the backing veneer equivalent to the front veneer is adhered to the back surface of the plywood board of the veneer-bonded plywood under the same conditions, the front and back surfaces are well balanced and warpage is unlikely to occur. At the same time, when the backing veneer is attached, the adhesive penetrates into the back veneer and the backing veneer of the plywood substrate and is reinforced by the resin of the adhesive. Further, since the concavo-convex for bonding is formed at a position including the back single plate of the plywood substrate of the laminated veneer board, the backing single plate, the damping layer, the front single plate of the plywood substrate, and the core layer single plate, the backing single plate is used. In addition to the increased strength, the fiber direction of the veneer that appears in the joint portion even when the joint portion is processed is parallel to the longitudinal direction of the floor plate (the processing direction of the joint portion), so that fluffing does not occur.

Examples of the present invention will be shown below.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a laminated veneer plate, a damping layer, and a plywood substrate are sequentially laminated and integrated. Veneer pasting plywood 1
Has a thickness of 0.3 on the surface of the plywood 1c having a thickness of about 3 to 9 mm.
A veneer la of about 1.0 mm is attached,
The fiber directions of the front and back single plates 1c and 1d are configured to be parallel to the longitudinal direction of the floor plate. A backing veneer 4 equivalent to the front veneer 1a is attached to the back surface under the same conditions. That is,
If the veneer 1a is made of oak veneer with a thickness of 0.3 mm and is attached in parallel with the longitudinal direction of the floor plate, the thickness is 0.3 mm.
The oak veneer is attached in parallel with the longitudinal direction of the floorboard. Although it is not necessary to make the tree species the same,
If they are the same, the contraction rate and the like due to the absorption and release of water become the same, which is more balanced and preferable.

A damping layer 2 is formed on the lower surface of the laminated veneer plate 1. As the damping layer 2, a foamed synthetic resin obtained by foaming ethylene vinyl alcohol, polyvinyl alcohol or the like 5 to 40 times, natural rubber or synthetic rubber (SBR, NB)
R, AR, etc.) or 5
-40 times foamed rubber or unfoamed rubber, and synthetic fibers such as polyester and polypropylene formed into a sheet are impregnated with synthetic resin such as acryl as necessary in order to impart elasticity. Used. In both cases, the appropriate thickness range is 1.0 to 2.0 mm, and if it is too thin, it will not be able to exhibit soundproofing performance. Conversely, if it is too thick, the amount of sink will be large and you will stumble or walk while walking. Can not be.

A plywood substrate 3 is formed on the lower surface of the damping layer 2. The plywood substrate 3 has a thickness of about 5 to 9 mm, and the fiber directions of the front and back single plates 3a and 3c are parallel to the longitudinal direction of the floor plate. In addition, in order to fit the floor base having irregularities flexibly, a plurality of grooves may be cut from the lower surface of the plywood substrate 3 to impart flexibility.

Then, for joining to a position of the laminated veneer board 1b of the laminated veneer board 1b, the back veneer 1d, the backing veneer 4, the damping layer 2, the front veneer 3a of the plywood board 3 and the core layer veneer 3b. Unevenness 5
Are formed. At this time, an adhesive is used when the backing veneer 4 is attached to the plywood substrate 1b. This adhesive penetrates into the backing veneer 1d and the backing veneer 4 of the plywood substrate 1b, and the resin of the adhesive is used. Has been strengthened in. As a result, the strength of the unevenness 5 for joining is increased. Further, since the fiber direction of the back veneer 1d of the plywood substrate 1b exposed on the unevenness 5 is parallel to the longitudinal direction of the floor plate (cutting direction of the unevenness), fluffing does not occur, and the floor plate members are reliably joined together. It looks good and looks good.

A buffer layer 6 is formed on the lower surface of the plywood substrate 3 if necessary. For example, similar to the damping layer 2, foamed synthetic resin obtained by foaming ethylene vinyl alcohol, polyvinyl alcohol or the like 5 to 40 times, natural rubber or synthetic rubber (SB
(R, NBR, AR, etc.) alone or in mixture to give 5 to 40 times the same foamed rubber or unfoamed rubber, and synthetic fibers such as polyester and polypropylene to give elasticity to the sheet. What is impregnated with a synthetic resin such as acrylic resin is used. In either case, the thickness may be in the range of 2.0 to 10.0 mm. These may be appropriately configured individually or in combination depending on the required soundproof performance.

[0012]

According to the present invention, since the backing veneer equivalent to the front veneer is adhered to the back surface of the plywood substrate of the veneer-bonded plywood under the same conditions, the front and back surfaces are balanced and warpage occurs. It is difficult to do, and when the backing veneer is attached, the adhesive penetrates into the back veneer and the backing veneer of the plywood substrate and is reinforced by the resin of the adhesive. Further, since the concavo-convex for bonding is formed at a position including the back single plate of the plywood substrate of the laminated veneer board, the backing single plate, the damping layer, the front single plate of the plywood substrate, and the core layer single plate, the backing single plate is used. In addition to the increase in strength, the fiber direction of the veneer that appears in the joint portion when processing the joint portion is parallel to the longitudinal direction of the floor plate (the processing direction of the joint portion), so that fluffing does not occur and the joining can be reliably performed.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional view of a wooden soundproof floorboard according to an embodiment of the present invention.

[Explanation of symbols]

 1 Veneer laminated plywood 2 Damping layer 3 Plywood substrate

Claims (3)

[Claims] 1. A wooden soundproof floorboard in which a veneer-bonded plywood (1), a vibration-damping layer (2), and a plywood board (3) are successively laminated and integrated, and a plywood board (1b) of the veneer-bonded plywood (1) is formed. A backing veneer (4) equivalent to the front veneer (1a) is adhered to the back under the same conditions, and the front and back veneers (1c) (1d) of the plywood substrate (1b) of the veneer-bonded plywood (1) are attached. The fiber direction is parallel to the longitudinal direction of the floorboard, and the back veneer (1d), the backing veneer (4), the damping layer (2), and the plywood substrate (3) of the plywood substrate (1b) of the laminated veneer (1). (3) A wood-based soundproof floorboard, characterized in that concavities and convexities (5) for joining are formed at positions including the front veneer (3a) and the core layer veneer (3b). 2. A plurality of grooves are formed from the back surface side of the plywood substrate (3), and the groove is formed.
The wooden soundproof floor board described. 3. The wooden soundproof floorboard according to claim 1 or 2, wherein a buffer layer (6) is attached to the back surface of the plywood substrate (3).