JPH069233Y2 - Sound insulation wooden floor material - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sound-insulating wooden floor material suitable for direct construction on a concrete floor surface.

[Prior Art] Recently, it is often practiced to directly apply a wooden floor material to a concrete floor surface. However, since this kind of concrete directly-applied flooring material has poor sound insulation, a thick cushioning material is attached to the back surface of the wooden floor material to improve the sound insulation. However, if a thick cushioning material is applied, the floor material sinks during walking, and the walking feeling deteriorates.

[Problems to be Solved by the Invention] The object of the present invention is to solve the above-mentioned drawbacks and to provide a flooring material having a good walking feeling despite having excellent sound insulation.

[Means for Solving the Problem] This invention has the same shape as the base material on the back surface of the base material,
And a cushioning material with a bottomed hole is attached at an appropriate position,
The present invention relates to a sound insulation wooden floor material in which the bottomed holes are filled with a filler material that is harder than the cushioning material.

Hereinafter, the present invention will be described in detail with reference to the drawings. In FIGS. 1 to 3, reference numeral 1 denotes a wooden board, and a sheet 2 having a sound insulating property, a vibration damping property or a cushioning property, a perforated wooden board 3 and a bottomed hole 5 are formed at appropriate positions on the back surface of the wooden board 1. The cushioning material thus formed is sequentially attached. Bottomed hole 5 formed in this cushioning material 4
A filling material 6 that is harder than the cushioning material 4 is filled therein.

As the wood board 1, plywood, particle board, hard board, LVL (parallel plywood), etc. can be mentioned, and a name wood veneer or a decorative synthetic resin sheet is attached to the surface thereof, or a decorative layer is formed by painting. May be formed.

The thickness of the wood board 1 is preferably 2.5 to 4.0 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 the thickness is preferably 1 to 2 mm.

As the perforated wood board 3 to be attached to the back surface of the sheet 2, plywood, particle board, hard board, LVL or the like can be used. The thickness is preferably 2.5-4.0 mm and the hole diameter is 5-
15 mm is preferable, but not limited to these.

In the drawings, the base material is a combination of the wooden board 1, the sheet 2, and the perforated wooden board 3, but the present invention is not limited to this, and the construction is made of only the wooden board, the wooden board and other constructions. It may be configured in combination with a material such as hard rubber or glass fiber board.

The cushioning material 4 having the bottomed holes 5 formed therein has a thickness of 3 to 15 mm.
Polyolefin foams, rubber foams, etc. are suitable, and among them, the independent foams are preferable because they are excellent in waterproof property and are less likely to be tired than continuous foams. If the thickness is less than 3 mm, the function as a cushioning material is poor, and if the thickness exceeds 15 mm, the subsidence when walking is severe and the walking feeling becomes poor. A large number of independent convex portions 7 are formed on the lower surface of the cushioning material 4. The diameter of the convex portion 7 is preferably 5 to 30 mm and the height is preferably 1 to 5 mm, but not limited to this. Further, it goes without saying that the surface shape of the convex portion 7 may be square, triangular or polygonal other than circular.

By providing the convex portion 7 on the lower surface of the cushioning material 4 in this way, the contact area between the concrete floor surface and the floor material is reduced, and the sound propagation path is reduced, so that the sound insulation is improved. For example, when the sound insulation test was conducted by preparing the flooring material of FIG. 3 and the flooring material of FIG. 3 which does not have a convex portion with the other configuration being the same, a 125 octave band which is easily felt by human ears. However, the presence of the convex portion at the 250 octave band was reduced by 1 to 2 decibels as compared with the case without the convex portion.

A bottomed hole 5 is formed in the buffer material 4 at an appropriate position. Such cushioning material 4 may be formed by punching holes from the back surface to a certain depth in one sheet, but as shown in FIG. 3, a non-perforated cushioning sheet 4a and a hole penetrating therethrough. It may be formed by adhering to the buffer sheet 4b having. This has the advantage that the manufacturing is easy and the depth of the bottomed holes 5 can be made uniform. The cushioning sheet 4a and the cushioning sheet 4b having a through hole need not necessarily be made of the same material. The bottomed hole 5 is filled with a filling material 6 that is harder than the cushioning material 4. This filling material 6
Has a function of receiving sinking of the cushioning material 4 during walking, and therefore needs to be a harder material than the cushioning material 4. For example, a synthetic resin foam having low foaming and slightly elasticity. , Natural rubber, synthetic rubber, cork, wood, etc. are suitable. Alternatively, a hot melt resin may be injected and solidified to form the filler 6. Bottomed hole 5 formed in the cushioning material 4
The diameter is preferably 5 to 100 mm. If it is less than 5 mm, it has a drawback that it is difficult to manufacture, and if a large number of fillers are required to prevent sinking, if it exceeds 100 mm, the sound insulation of the flooring material may deteriorate. The bottomed hole 5 may be formed in a rectangular shape instead of a circular shape. Further, in the drawing, the size of the cushioning member 4 is a sheet whose outer shape is substantially the same as the outer shape of the base material 1, but two sheets may be abutted together.

The position of the bottomed holes 5 formed in the cushioning material 4 is preferably formed at a position where the sinking of the floor material is considered to be the largest. Therefore, it is generally considered that the sinking of the floor material is the largest in the vicinity of the joint between the floor materials, so that the cushioning material 4 is provided so that the bottomed holes 5 are provided at one end or both ends in the longitudinal direction of the base material.
It is preferable to form the bottomed hole 5 in the bottom. The reason why the bottomed hole is adopted in this invention is not a bottomed hole but a hole penetrating the entire thickness of the cushioning material 4 when the filling material 6 is filled with the sound from the floor surface. Sound is transmitted to the concrete floor directly through the filler 6 and the sound insulation is deteriorated. However, if the hole has a bottom, before the sound from the floor surface reaches the filler 6, even if it is thin, It is possible to prevent the sound insulation from being lowered by that amount due to the buffering action.

In addition, as shown in the drawing, the surface wood board, the sound insulation, vibration damping or sound insulation sheet and the perforated wood board which are integrated are divided into small pieces and combined, and the cushioning material is pasted on the back surface. The ones have better sound insulation than the large size ones that are not split. 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 melted resin 8 is poured and bonded, and the buffer material 4 having a bottomed hole is bonded to the entire back surface thereof.

[Example 1] After a size 30 cm x 90 cm, 4.0 mm thick decorative plywood, 2.0 mm thick rubber foam sheet, 4.0 mm thick, perforated plywood with a hole diameter of 10 mm were pasted together with an adhesive, Cut this to thickness 1
A long and narrow rectangular plate material having a width of 0.2 mm, a width of 60 mm and a length of 900 mm was manufactured, and five sheets were vertically shifted and joined with male and female groves to form a base material. The male and female ridges are slightly bent at the joints and are loosely joined so that they easily fit into the irregularities of the base, and the hot melt resin that has flexibility after curing in the grooves on the back of the joints. Was poured and joined. Next, as shown in FIGS. 2 and 3,
The diameter is 20 mm so that one hole is made at one end of the long rectangular plate material that constitutes the base material and the non-perforated cushioning sheet with a thickness of 2 mm.
A 5 mm thick buffer sheet made of a polyophine-based foam with 5 mm holes formed thereon was successively attached to the back surface of the base material, and the bottomed hole had a 5 mm thickness with a low expansion ratio and a slightly hard polyophine A desired flooring material was manufactured by filling a filler made of a foamed material.

[Advantage of the Invention] Since the present invention is configured as described above, even if the thickness of the filling material is the same as the depth of the bottomed hole, the filling material has a margin to be slightly recessed inward, Even before the sound reaches the filling material, even if the sound is thin, it is possible to prevent the sound insulating property from being deteriorated by that amount due to the cushioning action of the cushioning material, and the walking feeling is not deteriorated.

[Brief description of drawings]

FIG. 1 is a plan view showing a sound-insulating wooden flooring material as an embodiment of the present invention, FIG. 2 is a bottom view of the same, and FIG. 3 is an AA enlarged sectional view of FIG. In the drawing, 1 is a wooden board, 2 is a sheet having sound insulation, vibration damping or cushioning properties, 3 is a perforated wooden board, 4 is a cushioning material, 5 is a bottomed hole, 6 is a filling material, 7 is a convex portion, 8 shows a hot melt resin.

Claims (2)

[Scope of utility model registration request] 1. A back surface of a base material, which has substantially the same shape as the base material,
And a cushioning material (4) having a bottomed hole (5) formed at an appropriate position is attached, and the bottomed hole (5) is filled with a filler material harder than the cushioning material (4).
Sound-insulating wooden floor material filled with (6). 2. A cushioning sheet (4b) having a bottomed hole (5) formed therein, a cushioning material (5) having a non-perforated cushioning sheet (4a), and a hole penetrating therethrough.
The sound-insulating wooden flooring material according to claim 1, which is formed by bonding.