JP2537895Y2 - Wooden soundproof floorboard - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention relates to a wooden soundproof floorboard.

[Prior art] Japanese Utility Model Application No. Hei 1-77982 (Japanese Utility Model Application No.
As shown in No. -15949), a structure in which a cloth-like material such as a wooden decorative board, a rubber or synthetic resin sheet, a wooden substrate, a rubber or synthetic resin sheet, a wooden substrate, and a nonwoven fabric is laminated has been proposed. . The floor panel of this configuration has a sound insulation rating of L-
Achieved 45-50, which is practical.

[Problems to be Solved by the Invention] However, in the floorboard having the above configuration, rubber or synthetic resin sheets are laminated in multiple layers, and a cloth-like material such as a nonwoven fabric is used. There is a problem that a heavy sink occurs when heavy objects such as furniture and furniture are placed. An object of the present invention is to provide a wood-based sound-insulating floorboard having an excellent soundproofing effect even when a heavy object is hardly remarkably settled.

[Means for Solving the Problems] The problem is that a rubber or synthetic resin sheet is adhered via an adhesive to a lower surface of a wooden substrate having a thin decorative veneer adhered to the surface, and further, the lower surface thereof A wood-based soundproofing characterized in that a wooden substrate is adhered via an adhesive, and a three-layer synthetic resin foam in which an intermediate layer is softer than upper and lower layers is adhered via an adhesive on the lower surface thereof. Solved by floorboards.

Hereinafter, this invention will be described in detail with reference to the drawings of the embodiments.

 FIG. 1 shows a side view of a wooden soundproof floor panel.

The wooden substrate 2 is made of plywood, particle board, MDF, LVL, etc., and a thin decorative veneer 1 having a thickness of about 0.2 to 1.0 mm is adhered to the surface thereof. It is formed. It is better that the wooden decorative board is thin, but if it is too thin, it will crack or dent due to the load from the floor surface, causing a problem in the durability performance of the floor board. Therefore, the above range is appropriate.

A rubber or synthetic resin sheet 3 is adhered to the lower surface of the wooden substrate 2. Rubber or synthetic resin sheet 3 has a thickness of 0.5
Those having a hardness of 10 to 40 degrees as measured by a C-type hardness meter specified in JIS K 6301 within a range of up to 2.0 mm have a relatively small sinking amount and exhibit a sufficient soundproofing effect.

A wood substrate 4 is adhered to the lower surface of the rubber or synthetic resin sheet 3. Plywood, particle board, MDF, LVL or the like is used for the wood substrate 4 in the same manner as the above-mentioned wood substrate 2 for the surface. The thickness is preferably as relatively large as 5 to 7 mm, and the fittings 8 and 9 are formed. In order to improve the familiarity with the concrete floor slab surface, the wooden substrate 4
It is preferable to form cut grooves at regular intervals from the lower surface of the substrate to a position reaching the wooden substrate 2 in the short direction.

A synthetic resin foam 5 having a three-layer structure in which the intermediate layer 7 is softer than the upper and lower layers 6 is attached to the lower surface of the wooden substrate 4. The synthetic resin foam 5 is formed by integrally laminating or heat-sealing integrally molded foams in which the expansion ratio of the intermediate layer 7 is set higher than that of the upper and lower layers 6 or foam sheets having different densities. For example, polyethylene resin or urethane resin is used.

For example, a foaming ratio of about 10 to 40 times and a density of 0.03 to 0.3 g / cm ³
1 to 3 mm thick polyethylene resin foam 6
A urethane resin foam 7 having a density in the range of 0.02 to 0.1 g / cm ³ and a thickness of 1 to 2 mm is combined and laminated and adhered in a sandwich shape.

These are laminated and bonded using a common adhesive such as rubber, urethane resin, or acrylic resin, and are applied to the concrete floor slab surface using an epoxy resin adhesive or a moisture-curable adhesive.

[Action] According to the present invention, the middle layer 7 of the synthetic resin foam 5 gives a cushioning effect by reacting sensitively to a light load such as when walking from the floor, and conversely a piano or furniture. When a heavy object such as is placed, even if the intermediate layer 7 is crushed, the upper and lower layers 6 are harder than the intermediate layer 7 so that they are not easily crushed and large sinks are unlikely to occur.

[Examples] (Example 1) Rubber veneer veneer 1 having a thickness of 0.5 mm, plywood 2 having a thickness of 2 mm, rubber having a thickness of 1 mm and a hardness of 27 degrees measured by a C-measure hardness meter specified in JIS K 6301. System damping sheet 3, 7 mm thick plywood 4 with fittings 8 and 9 formed on the periphery, foaming ratio 3
A urethane resin foam 7 having a density of 0.05 g / cm ³ and a thickness of 1.5 mm is integrated between two polyethylene resin foams 6 having a density of 0.1 g / cm ³ and a thickness of 1.5 mm with a rubber adhesive. The synthetic resin foams 5 which were laminated and adhered in order were laminated and adhered in order to obtain the desired wood-based soundproof floorboard.

(Example 2) In Example 1, 100m from the lower surface of the plywood 4
Cut grooves (not shown) having a width of 3 mm were formed at intervals of m to obtain a desired wood-based soundproof floor plate.

Then, the wood-based soundproof floorboards of the above Examples 1 and 2 were
Installed on a concrete floor slab equivalent to 0 mm using epoxy resin adhesive, apply a lightweight floor impact sound with a tapping machine from the upper surface, measure noise for each frequency from the lower surface of the concrete floor slab using a sound level meter, sound insulation The grade value (L) was determined.

As a result of the test, as shown in FIG.
Example 2 had properties that passed L-45.

In addition, when I walked on the upper surface of these wooden soundproof floorboards, the walking feeling was extremely good, and when I put heavy items such as furniture, no significant sinking was observed.

[Effect of the Invention] According to the invention, the intermediate layer of the synthetic resin foam reacts sensitively to a light load such as when walking from the floor surface to give a cushion effect, and conversely, a piano or furniture. When a heavy object such as is placed, even if the intermediate layer is crushed, the upper and lower layers are harder than the intermediate layer, so that the upper and lower layers are harder to be crushed and a large sink is hardly generated. Thus, it is possible to suppress the occurrence of sinking under a large load while providing a comfortable walking feeling.

[Brief description of the drawings]

FIG. 1 is a side view of a wooden sound-insulating floorboard according to an embodiment of the present invention, and FIG. 2 shows the results of a sound insulation class test. DESCRIPTION OF SYMBOLS 1 ... Veneer veneer 2 ... Wood substrate 3 ... Rubber or synthetic resin sheet 4 ... Wood substrate 5 ... Synthetic resin foam

Claims (1)

(57) [Scope of request for utility model registration] 1. A rubber or synthetic resin sheet is adhered via an adhesive to the lower surface of a wooden substrate having a thin decorative veneer adhered to the surface, and the wooden substrate is adhered to the lower surface via an adhesive. A wood-based sound-insulating floorboard characterized in that a three-layer synthetic resin foam in which an intermediate layer is softer than upper and lower layers is adhered to the lower surface thereof via an adhesive.