JPH0637154Y2 - Sound insulation wooden floor material - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sound insulation wooden floor material suitable for being directly applied to a concrete floor material.

[Prior Art] Conventionally, in many cases, the floors of middle- and high-rise houses are made by directly attaching carpets to a concrete floor via felt. However, carpets are easily soiled, and the occurrence of mites has been a problem.

Therefore, instead of sticking carpets, it has been changed to construct wooden floors by directly sticking wooden floors to concrete floors, but wooden floors are inferior in sound insulation to carpets, so they are more comfortable to live in. There was a new problem of damage.

[Problems to be solved by the invention] The inventors of the present invention have solved the above-mentioned problems and have conducted daily research for the purpose of providing a wooden flooring material having excellent sound insulation. A sound insulation, wooden floor material in which a sheet having a sound insulation property, a vibration damping property, or a cushioning property, a perforated wood board, and a cushioning material is sequentially laminated is devised and applied for earlier. This device is a further improvement of the above device.

[Means for Solving the Problem] The present invention provides one or a plurality of sheets such as a sheet having sound insulation, vibration damping or cushioning on the back surface of a wooden board, perforated wooden board, synthetic resin fiber, natural fiber, metal fiber, etc. A sound-insulating wood-based flooring material characterized in that a cushioning body containing a cushioning foam is sequentially adhered to voids of a mat-like material having dynamic rigidity in which seeds are entangled with each other.

Hereinafter, the sound-insulating wooden flooring material of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a wooden board, and a sheet 2 having a sound insulating property, a vibration damping property, or a buffering property, a perforated wooden plate 3, and a buffer body 4 are sequentially attached to the back surface of the wooden plate 1.

As the wood board 1, plywood, particle board, hard board, LVL (parallel plywood), etc. can be mentioned, and a name wood veneer, a decorative synthetic resin sheet is attached to the surface of the wood board, or a decorative layer is formed by painting. May be formed. Wood board 1
The thickness is preferably 2.5 to 3.3 mm, but is not limited to this.

The sheet 2 to be attached to the back surface of the wooden board 1 is a sheet having a sound insulating property, a vibration damping property, or a cushioning property. Examples of the sound insulation or vibration damping sheet include a powdered lead-containing vinyl chloride sheet, an inorganic powder-filled rubber sheet, a vinyl chloride sheet, and the like, and those having a thickness of 0.8 to 2 mm are preferable, but not limited thereto. The cushioning sheet may be a cushioning sheet such as a rubber foam or an olefin foam, and preferably has a thickness of 1 to 2 mm.

Further, plywood, particle board, hard board, LVL or the like can be used as the perforated wood board 3 of the intermediate layer. The thickness is preferably 2.5 to 4.0 mm, and the hole diameter is preferably 5 to 15 mm, but is not limited thereto. Unlike perforated wood boards, such perforated wood boards have the function of reducing the transmission of sounds from the upper floor, such as the sounds of walking with slippers and the sounds of children running, to the lower floor, and the back surface of the wood boards. It is possible to minimize the deterioration of the strength of the wooden board as compared with the grooved wooden board in which the kerf is formed. This is because when the kerf is formed, a continuous void is formed in the entire width direction, and as a result, the strength of the wood board is reduced.

The cushioning body 4 attached to the back surface of the perforated wood board 3 has a cushioning foam inside the voids of a mat-like material in which one kind or several kinds of synthetic resin fiber, natural fiber, metal fiber, etc. are entangled. Is configured. Examples of the material of this mat-like material include synthetic resin fibrous materials such as polyethylene, polypropylene, nylon and vinyl chloride, natural fibrous materials such as palm, and metal fibrous materials such as iron and stainless steel.
Further, this mat-like material itself has some dynamic rigidity, and when measured using a non-resonant, forced vibration type dynamic stiffness tester, 100 N / cm ² It is preferable that the size is cm or less. If it exceeds the above value, it does not contribute much to the sound insulation. In order to have such dynamic rigidity, the fibrous material described above must not be too soft and must have a diameter of a certain value or more. This diameter varies depending on the material, but is generally 0.15 to 3 mm, preferably 0.3 to 2 m
m. If it is thinner than 0.15 mm, the dynamic rigidity is 100 N / cm ²
・ There is a risk of exceeding cm, and if it exceeds 3 mm, the rigidity is too high and the sound insulation effect cannot be expected. It is preferable that the thickness of the mat-like material is 3 to 10 mm at room temperature without load, considering sound insulation and economy, but not limited to this. A foam having a cushioning property is embedded in the voids of the mat-like material as described above. The foam may be completely filled, or may be filled so as to leave some voids. Further, a filling method such as an upper half of the mat-like material (in the drawings, the top of the drawing is referred to as the mat-like material) or a lower half may be used. Examples of the foam to be filled include foams such as urethane, polyethylene, and urea resin, and rubber foams. As a filling method, a method in which a foaming composition is poured into a mat-like material and then foamed by a known method, a method in which foam beads are put in the mat-like material and heated and foamed, and the like are considered. In this way, when the foam with cushioning property is internally provided in the voids of the mat-like material, even if the mat-like material sinks due to its weight when walking on the floor material, the restoring force of the mat-like material itself and the foam The matting material does not sag due to the synergistic restoring force, and the sound insulation can be maintained semipermanently.

In addition, as shown in FIG. 2, a wooden board which is a combination of a surface wooden board, a sheet having a sound insulating property, a vibration damping property or a sound insulating property and an intermediate wooden board is divided into small pieces and combined. , It has better sound insulation than a large size wood board that does not break into small pieces. It is considered that this is because it becomes difficult for the sound to propagate in the small parts. The wood board divided into small pieces as described above is subjected to loose tongue processing so that the wood mouth surface can be slightly bent, and the hot surface has flexibility after hardening in the groove on the back surface caused by the tongue joint. The melt resin 5 is poured and bonded, and one buffer body 4 is bonded to the entire back surface thereof.

[Example 1] 30 cm x 90 cm size, 2.8 mm thick decorative plywood, 2.0 mm thick rubber foam sheet, 2.7 mm thick, perforated plywood with 10 mm hole diameter,
A desired flooring material was manufactured by pouring a large number of 66-nylon pieces having a length of 3 to 10 cm and a diameter of 1 mm into a mat-like material having a thickness of 5 mm, and pouring the polyurethane resin liquid into the foamed material and sequentially laminating the foamed buffer bodies. .

[Comparative Example 1] A flooring material was produced in the same manner as in Example 1 except that foamed polyurethane having a thickness of 5 mm was used as the buffer.

[Comparative Example 2] A flooring material was manufactured in the same manner as in Example 1 except that non-perforated plywood was used instead of perforated plywood.

[Example 2] The wood board, the foam sheet, and the perforated wood board used in Example 1 were laminated in order, and then cut to have a thickness of 6.3 mm and a width of 60 m.
An elongated rectangular plate material having a length of m and a length of 900 mm was produced, and five sheets were vertically displaced and joined with male and female groves. The male and female ridges are slightly joined at the joints and are loosely joined so that they easily fit into the irregularities of the base. Melt resin was injected and joined. Then, a polyethylene foam composition was poured into a mat-like product having a thickness of 5 mm and a diameter of 0.5 mm and made of a large number of polyethylene having a length of 5 to 30 cm and a polyethylene foam composition was poured and a single cushioned body was attached to the mat. The desired floor covering was produced.

FIG. 3 shows the results of sound insulation tests performed on the flooring materials obtained in Examples and Comparative Examples. As is clear in FIG.
The floor material of the present invention is superior in sound insulation compared to the floor material of the comparative example.

[Effects of the Invention] As described in detail above, although the present invention is extremely excellent in sound insulation, the sound insulation performance is deteriorated because the foam having cushioning property is embedded in the void of the mat-like material. It is possible to obtain a difficult wooden floor material.

[Brief description of drawings]

FIG. 1 and FIG. 2 are cross-sectional views showing a sound insulation wooden flooring material as an embodiment of the present invention, and FIG. 3 is a view showing sound insulation properties of the embodiment and the comparative example. In the drawings, 1 is a wooden board, 2 is a sheet having a sound insulating property, vibration damping property or cushioning property, 3 is a perforated wooden plate, 4 is a buffer body, and 5 is a hot melt resin.

Claims (1)

[Scope of utility model registration request] 1. A dynamic rigidity in which one or several kinds of a sheet having sound insulation, vibration damping or cushioning, a perforated wooden board, synthetic resin fiber, natural fiber, metal fiber, etc. are entangled on the back surface of the wooden board. A sound-insulating wooden flooring material, characterized in that a cushioning body containing a cushioning foam is sequentially attached to the voids of a mat-like material.