JPH0644933U - Wood soundproof flooring - Google Patents

Abstract

(57) [Summary] [Purpose] A wooden floor material that is directly installed on the concrete floor slab of an apartment house. Providing wood-based soundproof flooring that prevents it from propagating to rooms and downstairs. [Structure] A damping material (4) made of a resin-impregnated fiber-based sheet material impregnated with a rubber-based resin is provided on the lower surface of a wood-based decorative base material (3) having a decorative sheet (1) attached to the surface thereof. Through,
A wood intermediate base material (5) having a plurality of grooves (6) formed thereon is adhered, and a cushioning material (7) made of foamed synthetic resin having concavities and convexities formed on both surfaces is adhered to the lower surface thereof. Wooden soundproof floor material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a construction of a wood-based soundproof floor material for direct attachment, which is directly constructed on a concrete floor slab of an apartment house.

[0002]

[Prior art]

 As shown in FIG. 3, a conventional wood-based direct-adhesive flooring material has a cushioning property of 2.0 to 4. 4 having a cushioning property on the lower surface of a decorative plywood having a thickness of about 12 mm with a decorative sheet attached to the surface. A sheet-like material made of foamed synthetic resin of about 0 mm is generally attached, and the cushion sheet on the back surface of the base material absorbs the unevenness of the concrete floor slab surface, and also has the effect of improving the walking feeling. Had.

[0003]

[Issues to be solved by the device]

 However, the effect of preventing the propagation of noise generated from the upper surface of the floor material could hardly be expected. Therefore, the desired soundproofing performance is achieved by interposing a foamed rubber sheet between the wooden base materials, or by attaching a cushioning material with multiple foamed synthetic resin sheets with different expansion ratios laminated on the lower surface of the wooden base material. Various measures have been taken to achieve the above, but as a result, the floor material partially sinks due to the load from the top surface of the floor material, and it is fluffy when walking and there is a sense of incongruity and unnaturalness. Was occurring.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problems.A resin-impregnated fibrous sheet-like material in which a rubber-based resin is impregnated on the lower surface of a wooden decorative base material having a decorative sheet adhered to the surface is used. A wooden intermediate base material with a plurality of grooves is attached via a vibration damping material, and a cushioning material made of expanded synthetic resin with different shapes on both sides is formed on the lower surface of the base material. This was solved by the wooden soundproof floor material attached.

[0005]

In this invention, the vibration-damping material interposed between the wood decorative base material and the wood intermediate base material is the fiber-based sheet material impregnated with the rubber-based resin. It is cheaper than resins and foamed rubber, and by impregnating and curing rubber-based resin, not only is it possible to prevent sinking due to the load applied from the floor surface, but it is also thicker than foaming materials. This is because the noise restoration can be maintained at a high level because the restoration speed is fast.

[0006] Furthermore, it is generally the case that the concrete floor slab is not formed flat and has not only partial unevenness but also gentle unevenness as a whole in order to form the grooves in the intermediate wood base material. However, if a floor material without grooves is directly applied, the floor surface will be formed along the concave and convex of the concrete floor slab and will not be horizontal. Therefore, in order to prevent this, by forming a groove to give flexibility to the floor material, it is possible to form a floor surface that is extremely horizontal even after fitting to the unevenness of the base and after construction. Because an air layer is formed in the part, it can also have a soundproofing effect.

[0007] Furthermore, the use of a foamed synthetic resin having irregularities formed on both sides as a cushioning material improves the soundproofing effect by forming an air layer between it and the wood base material, and the unevenness of the floor slab This is to make them fit in.

The present invention will be described below with reference to embodiments and the drawings.

[0009]

【Example】

 FIG. 1 is a cross-sectional view of the wood-based soundproof flooring material of the embodiment, FIG. 2 is a view showing the sound insulation class test results of the light-weight floor impact test of the woody sound-proofing material of the embodiment, and FIG. It is a sectional view of a pasting flooring material. 1 is a decorative sheet, 2 is a wood base material, 3 is a wood base material, 4 is a damping material, 5 is a wood intermediate base material, 6 is a groove, and 7 is a cushioning material.

As the wood decorative base material 3, plywood, MDF, LVL, LVB, etc. having a thickness of 2.5 to 5.0 mm are used as the base material 2, and the surface thereof has a thickness of 0.1 to 1.0 mm. The makeup sheet 1 of 1 is attached via a common adhesive.

As the decorative sheet 1, a natural wood decorative veneer, a vinyl chloride resin sheet, thin paper, or the like is appropriately used. When the thickness of the wooden base material 2 is thin and warpage is likely to occur, it is preferable to use a sheet-like material equivalent to the decorative sheet 1 attached to the front surface on the back surface as a backer material because the warpage can be prevented.

Here, when a natural wood decorative veneer is used as the decorative sheet 1, the fiber directions of the natural wood decorative veneers attached to the front and back surfaces must be unified so that the wood base 2 It becomes impossible to balance the stress against the warp.

In the example, a natural wood decorative veneer having a thickness of 0.3 mm was attached to both surfaces of a plywood 2 having a thickness of 2.5 mm so that the respective fiber directions were unified.

Next, the damping material 4 made of a resin-impregnated fibrous sheet-like material impregnated with a rubber-based resin is attached to the lower surface of the wooden decorative base material 3 through a common adhesive. As the fibrous sheet material, polyester fiber, polyethylene fiber, nylon fiber or the like is used, and the thickness is preferably 1.0 to 2.0 mm.

As the rubber-based resin, butadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, butyl rubber, urethane rubber, acrylic rubber, etc. are used. You may let me. The impregnation rate may be 220 to 250 g / m ² , and the hardness of the fibrous sheet material may be slightly increased.

In the embodiment, styrene-butadiene rubber was applied to the surface of a polyester fiber having a thickness of 1.0 mm by a spray device at 240 g / m ² and the surface layer was impregnated and cured. Pasted on the underside of.

Next, the wood-based intermediate base material 5 in which the groove 6 is cut is attached to the lower surface of the vibration damping material 4 via a common adhesive. The base material is preferably plywood, LVL, or LVB because it cuts the grooves 6 to impart flexibility. The thickness is in the range of 5.0 to 9.0 mm. Further, the groove 6 to be cut may be cut so as to completely cut the wooden intermediate base material 5, may be cut halfway, and the cutting direction is not limited.

In the embodiment, after the plywood 5 having a thickness of 5.0 mm is attached to the lower surface of the damping material 4, the width 1. The grooves 6 having a depth of 0 mm and a depth of 5.0 mm were cut parallel to the lateral direction at regular intervals of about 100 mm.

Next, the cushioning material 7 is attached to the lower surface of the wooden intermediate base material 5. As the cushioning material 7 of this invention, a foamed synthetic resin sheet having irregularities on both sides is used. The uneven shape is arbitrary, but the ground contact area with the wooden intermediate base material or the floor slab is within the range of about 50 to 80%, and if the ground contact area is too small, sinking is likely to occur. Examples of the foam synthetic resin include polyurethane resin, polystyrene resin, polyvinyl chloride resin, and polyester resin, and materials having a foaming ratio of 20 to 30 times and a thickness of 8.0 to 10 mm. A product subjected to a heat compression treatment to 0 to 5.0 mm is used.

In the embodiment, a polyurethane resin foam having a thickness of 8.0 mm and 20 times expanded is used as a mold plate having an upper surface having a square shape and a convex area of 70% and a lower surface having a circular shape and a convex area of 50%. Then, the upper and lower surfaces were heated at 210 ° C., the lower surface at 230 ° C., and 90 kg / cm ² were heat-pressed.

Then, the wood-based soundproof flooring material having a total thickness of 13.8 mm was fixed onto a concrete floor slab having a thickness of 150 mm with an epoxy resin adhesive, and The sound insulation class (L) value was obtained by measuring the noise for each frequency using a sound level meter on the bottom surface of the concrete floor slab by adding a light impact sound from a tapping machine. It was a performance that passed.

[0022]

[Effect of device]

 According to this invention, the overall thickness can be maintained at the same level as that of the conventional direct-adhesion flooring material, and the sound insulation class value (L) is L-50 for the lightweight floor impact sound as shown in the test results of the examples. Thus, it is possible to obtain a wooden soundproof flooring material having extremely high soundproof performance.

[0023]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a wooden soundproof flooring material according to an embodiment.

FIG. 2 is a result of a sound insulation class test by a lightweight floor impact test of the wooden soundproof floor material of the example.

FIG. 3 is a cross-sectional view of a conventional wood-based direct-adhesion flooring material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decorative sheet 2 Wood base material 3 Wood base material 4 Damping material 5 Wood intermediate base material 6 Groove 7 Buffer material

Claims (1)

[Scope of utility model registration request] 1. A vibration-damping material (4) comprising a resin-impregnated fibrous sheet-like material impregnated with a rubber-based resin on the lower surface of a wooden decorative base material (2) having a decorative sheet (1) adhered to the surface thereof. A wood intermediate base material (5) having a plurality of grooves (6) formed thereon is adhered to the bottom surface of the base material, and a cushioning material (7) made of a foamed synthetic resin having concavities and convexities formed on both surfaces is attached to the lower surface thereof. A wood-based soundproof flooring characterized by being attached.