JPH0644934U - 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] The decorative sheet (1) is attached to the surface, and
A wooden soundproofing floor material in which a cushioning material (4) made of a foamed synthetic resin having irregularities formed on both sides is attached to the lower surface of a wooden base material (3) having a plurality of grooves (5) formed therein.

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. 2, a conventional wood-based direct-adhesive flooring material has a cushioning property of 2.0 to 4. 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]

 This invention has been made to solve the above-mentioned problems, and a decorative sheet is attached to the surface of the wooden decorative base material having a plurality of grooves formed on the lower surface of which unevenness is formed. This was solved by using a wood-based soundproof floor material to which a cushioning material made of expanded synthetic resin was attached.

[0005]

[Action]

 In this invention, 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. Yes, if a floor material without grooves is constructed, the floor surface will be formed along the irregularities of the concrete floor slab and will not be horizontal. Therefore, in order to prevent this, by forming a groove and giving flexibility, a floor surface that is extremely horizontal is formed even after the construction that conforms to the unevenness of the base, and an air layer is formed inside the groove. Because it is done, it is possible to have a soundproof effect together.

Further, the use of the foamed synthetic resin having unevenness formed on both sides of the cushioning material enhances the soundproofing effect by forming an air layer between the cushioning material and the wood base material, and is similar to the unevenness of the base. This is because

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

[0008]

【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 base material, 3 is a wood decorative base material, 4 is a cushioning material, and 5 is a groove.

The wood decorative base material 3 is made of plywood in which the groove 5 is formed and has a thickness of 9.0 to 12 mm, MDF, LVL, LVB, etc., and has a thickness of 0.1. A common decorative sheet 1 of about 1.0 mm 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. The groove 5 to be cut does not need to be cut until the base material is completely cut in order to maintain the bending strength of the flooring body.

In the embodiment, the natural wood decorative veneer 1 having a thickness of 0.3 mm is attached to the surface of the plywood 2 having a thickness of 9.0 mm, and the back surface of the plywood has a width of 1.0 mm and a depth of 5. The 5 mm groove 5 was cut parallel to the lateral direction at regular intervals of about 100 mm.

Next, the cushioning material 4 is attached to the lower surface of the wooden decorative base material 3. As the cushioning material 4 of this invention, a foamed synthetic resin sheet having concavo-convex shapes on both sides is used. The uneven shape is arbitrary, but the ground contact area with the wooden decorative base material 3 or the floor slab is in the range of 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 the material having a foaming ratio of 20 to 30 times and a thickness of 8.0 to 10 mm is changed to 4.0 to 5.0 mm. The one that has been heat-pressed is used.

In the embodiment, a polyurethane resin foam having a thickness of 8.0 mm and a foam ratio of 20 is formed on the upper surface with a quadrangular convex area of 70% and a lower surface of a circular concave and convex shape area of 50%. Then, heat-pressing was performed under the conditions of the upper surface 210 ° C., the lower surface 230 ° C., and 90 kg / cm ² , and the cushioning material 4 molded into a 4.0 mm-thick sheet was attached to the lower surface of the wooden decorative base material 3 with an adhesive. I stuck it.

Then, the wood-based soundproof flooring material having a total thickness of 12.3 mm was fixed onto a concrete floor slab having a thickness of 150 mm with an epoxy resin adhesive, and The sound impact level (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.

[0014]

[Effect of device]

 According to the present invention, although the overall thickness can be formed thinner than the conventional direct-adhesion flooring material, as shown in the test results of the example, the sound insulation class value (L) is L-weight for light-weight floor impact sound. It is possible to obtain a wood-based soundproof flooring material having a high soundproofing performance of 55.

[0015]

[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]

 1 Decorative Sheet 2 Base Material 3 Wood Decorative Base Material 4 Buffer Material 5 Groove

Claims (1)

[Scope of utility model registration request] 1. A foamed synthetic resin in which a decorative sheet (1) is attached to the surface and a plurality of grooves (5) are formed on the lower surface of a wood-based decorative base material (3), in which irregularities are formed on both surfaces. A wood-based soundproof flooring material having a cushioning material (4) made of