JP2605478Y2 - Soundproof floorboard - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof floor panel for a detached house floor.

[0002]

2. Description of the Related Art In a detached house of two stories or more, a floor plate made of decorative plywood or the like having a thickness of about 15 mm is directly mounted on a joist with nails or an adhesive, etc. The impact sound from the upper surface was directly propagated downstairs (the light-weight floor impact test performed on a concrete floor slab was performed on a detached house, and the sound insulation rating was about L-80). It wasn't a problem.

[0003]

[Problems to be solved by the invention] However, recently, the noise from the upper floor of a detached house has been suddenly brought up due to changes in user needs. There is a demand for a soundproof floorboard for a detached house having a floor. In order to satisfy this demand, a floorboard has been proposed in which a plywood as a substrate is laminated on a lower surface of a relatively thin decorative plywood via a vibration damping material made of a foamed synthetic resin. However, in the floorboard having this configuration, since the damping material is merely foamed to have cushioning properties, there is a problem that sinking easily occurs due to a load from the floor surface. .

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has an uneven surface for bonding on a lower surface of a surface plate having a decorative layer formed on a surface thereof through a vibration damping material. A soundproof floorboard to which a substrate on which is formed is adhered,
As the vibration damping material, the mixing ratio with respect to the synthetic resin is 10% to 10% by weight in a foamed synthetic resin having an expansion ratio of (2 to 10) times.
The gist of the present invention is that a latex containing 30% of latex is used.

Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of the soundproof floor of the present invention. In FIG. 1, 1 is a decorative layer, 2 is a surface plate, 3 is a damping material, 4 is a substrate, and 5 is projections and depressions formed on the periphery of the substrate 4.

The surface plate 2 has a thickness of 2.5 mm to 3 mm.
A plywood, a laminated veneer, a piece of wood, a fiberboard, etc. of about mm are used, and the decorative layer 1 is provided on the surface thereof. Makeup layer 1
For example, a natural wood decorative veneer, a reinforced decorative paper, a synthetic resin sheet, or the like is used, but the decorative layer 1 may be formed by directly applying a colored coating on the upper surface of the surface plate 2.

On the lower surface of the surface plate 2, a vibration damping material 3 having a thickness of about 1 mm to 2 mm in which latex is mixed in a foamed synthetic resin is adhered. As the foam synthetic resin, a synthetic resin such as polyurethane, polystyrene, or polyethylene is used, and a foam having a low expansion ratio of (2 to 10) times is preferably used. If the expansion ratio is too high, the cushioning property is high, but the sinking due to the load from the upper surface of the floorboard becomes remarkable. On the other hand, if the expansion ratio is too low, not only the cushioning property is impaired, but also the sound insulation performance decreases.

The mixing ratio of latex to the foamed synthetic resin is preferably about 10% to 30% by weight. If it is less than 10%, the rubber viscosity is insufficient, and the sinking due to the load from the upper surface of the floorboard cannot be improved. On the other hand, if it exceeds 30%, the foamed synthetic resin becomes hard due to an increase in rubber viscosity, so that not only the sound insulation performance is reduced but also the cost is high. Aqueous vinyl urethane, latex-modified urea resin, or the like is used as an adhesive when the vibration damping material 3 is attached to the lower surface of the surface plate 2.

A substrate 4 is adhered to the lower surface of the damping material 3. As the substrate 4, a plywood having a thickness of about 9 mm to 15 mm, a laminated veneer, a molded piece of wood, a fiber board, or the like is used.
Concavities and convexities 5 (commonly known as “real”) are formed on the peripheral portion of the substrate 4 to improve the workability of the floorboard. The unevenness 5 should be formed on the peripheral edge of the substrate 4. When the unevenness 5 is formed including the damping material 3 and the surface plate 2, the vibration damping material 3 is applied when a load is applied from the upper surface of the floor plate.
Care must be taken because there is a possibility that a step may occur between the floorboards due to this.

[0011]

According to this invention, since the latex is mixed in the foamed synthetic resin constituting the vibration damping material, the rubber viscosity of the latex is added to the synthetic resin forming the foamed layer, and the conventional foaming resin is simply foamed. The foamed layer is less likely to be crushed than a foamed synthetic resin.

An embodiment of the present invention will be described below.

[0013]

EXAMPLE On the lower surface of a face plate made of plywood having a thickness of 2.5 mm and a decorative veneer having a thickness of 0.3 mm stuck to the surface, a latex was added to a polyurethane resin having an expansion ratio of 5 times. A board made of plywood having a thickness of 12 mm and having irregularities for bonding formed on the periphery is adhered through a vibration damping material having a thickness of 1.5 mm and a mixing ratio of 20% in a ratio, and a desired soundproofing. A floorboard was obtained.

As a comparative example, a normal floorboard made of a plywood having a thickness of 15 mm and a decorative veneer having a thickness of 0.3 mm stuck on the surface was prepared, and the floorboard was detached together with the soundproofing floorboard obtained in the above embodiment. After installing with nails and adhesive on the joists on the second floor of the house, a light floor impact sound was generated from the upper surface of these floorboards with a tapping machine, and the measurements were taken downstairs. The result, as shown in FIG.
The conventional floorboard is L-76, and the soundproof floorboard according to the embodiment of the present invention is L-69. In addition, although he actually walked on the floor, the sink was relatively small and the walking feeling was good.

From the above, it can be seen that the soundproof floorboard of the present invention has a simple structure, is superior in sound insulation performance as compared with the conventional floorboard, and has the same sound insulation performance as the soundproof floorboard of an apartment house.

[0016]

According to the present invention, noises on the floor can be cut off by using a floor panel having soundproofing properties also on the floor of a detached house, so that a comfortable life can be achieved. In addition, since latex is mixed into the foamed synthetic resin as a vibration damping material, the rubber viscosity of the latex is added to the synthetic resin forming the foamed layer, and the foamed foam is compared with the conventional foamed foamed synthetic resin. The layer is less likely to collapse and the elastic recovery is improved. Therefore, sinking hardly occurs even when a load is applied from above the floor surface while maintaining the sound insulation performance.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the soundproof floorboard of the present invention.

FIG. 2 is a graph showing a result of a sound insulation grade test of the soundproof floor panel of the present invention, in comparison with a comparative example.

[Explanation of symbols]

 Reference Signs List 1 decorative layer 2 surface plate 3 damping material 4 substrate 5 unevenness for bonding

Claims (1)

(57) [Scope of request for utility model registration] A substrate (1) on the lower surface of which a decorative layer (1) is formed on which a concave / convex (5) for bonding is formed at a peripheral portion via a vibration damping material (3). 4) is a soundproof floorboard to which a foaming ratio is applied as the vibration damping material (3):
(2-10) A soundproof floorboard comprising a foamed synthetic resin mixed with a latex whose mixing ratio with respect to the synthetic resin is 10% to 30% by weight.