JPH10169167A - Subflooring with sound and heat-insulating functions - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent indoor pollution and make it possible to exert sound and heat-insulating functions by adhering subflooring to which a cork sheet, a nonwoven cloth and a foamed resin sheet are adhered by an aqueous paste, to a foundation floor by a urethane adhesive. SOLUTION: Subflooring B is composed by adhering a cork sheet 1, a nonwoven cloth 2, a foamed urethane resin sheet 3 and a nonwoven cloth 4 in this order from the top. The foamed resin sheet 3 should have many dimples at its underside. And then the underside of the nonwoven cloth 4 of the subflooring B is applied to a concrete floor A with a low molecular weight resin adhesive such as a urethane adhesive 5. The problem of radiating hazardous substances and polluting rooms is solved and a floor that is built easily exerts sound and heat-insulating functions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor covering having soundproofing and heat insulating functions.

[0002]

2. Description of the Related Art In recent condominiums, since sound insulation between the upper and lower floors is required, our company has developed a floor covering material in which a cork sheet material and a urethane foam sheet material are bonded.

[0003] In the case of constructing a floor section using this floor base material, for example, an adhesive (so-called rubber-based adhesive) having a quick-drying property on the urethane sheet material side on a concrete surface which is a foundation floor.
Then, apply vinyl sheet, carpet, wood floor, etc., which are surface finishing materials, to the cork sheet material on the top side.

[0004] The floor thus constructed has a good appearance and a soundproofing and heat insulating function due to the combination of the cork sheet material and the urethane foam sheet material.

Here, it is necessary to use a quick-drying adhesive as an adhesive for the following reasons. That is, in the above-mentioned floor base material, the moisture contained in the adhesive causes an imbalance in the amount of water on the upper and lower surfaces of the cork sheet material, and a warping force is generated in the floor base material. This is because the warped portion comes off the foundation floor.

However, since a rubber-based adhesive uses a phenol resin having a low molecular weight as a raw material for softening, formaldehyde harmful to the human body is emitted over time (emissions according to Japanese Agricultural Standards for flooring). When the amount test is performed, it is found to be 40 to mg / l or more), which causes a problem of causing indoor contamination.
Emulsion-based adhesives have the same problem because phenolic resins are used as preservatives.

[0007] In order to avoid the emission of formaldehyde, it is conceivable to construct the floor base material using, for example, a low molecular weight urethane-based adhesive. However, since the urethane-based adhesive is not quick-drying (it takes about one day to harden), a warping force acts on the cork sheet as described above before the adhesive hardens, so that the floor base material warps. Turned out to be very difficult.

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a flooring material which does not cause indoor pollution and can be easily bonded.

[0009]

According to the present invention, there is provided a floor covering material having a soundproofing and heat-insulating function, in which a cork sheet material 1, a nonwoven fabric 2, a foamed resin sheet material 3, and a nonwoven fabric 4 are water-based in this order. The lower surface of the nonwoven fabric 4 is bonded to the base floor with a low molecular weight resin-based adhesive.

Preferably, dimples 30 are formed on the lower surface of the foamed resin sheet material 3.

This floor base material is constructed as follows. A low molecular weight resin-based adhesive is applied to at least one of the base floor surface and the nonwoven fabric 4. In this state, the nonwoven fabric 4 is impregnated with a low molecular weight resin-based adhesive in any case where the nonwoven fabric 4 is bonded to the base floor. In other words, in this floor base material, the adhesive is not simply adhered to the surface portion of the foamed resin sheet material 3 unlike the floor base material described in the section of the prior art, so that the floor base material has a warping force. Even if this occurs, it is difficult for this part to come off the foundation floor.

In addition, since the constituent members of the floor base material are formed using water-based glue, and the floor base material is attached to the base floor surface using a low molecular weight resin-based adhesive. Unlike the conventional one, there is no problem that formaldehyde harmful to the human body is radiated to cause indoor pollution.

The floor base material is mainly composed of a cork sheet material having excellent heat insulating properties and elasticity and a foamed urethane sheet material having excellent cushioning properties, so that the floor constructed has a soundproofing and heat insulating function. Will be.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows that a floor base material B is adhered to a concrete floor A (foundation floor) with a low molecular weight resin-based adhesive, and a carpet C is bonded to the upper surface of the floor base material B with the adhesive. Showing things.

As shown in FIG. 2, the floor base material B is formed by bonding the cork sheet material 1, the non-woven fabric 2, the foamed resin sheet material 3, and the non-woven fabric 4 in this order with water-based glue from top to bottom. The nonwoven fabric 4 is used as a surface to be attached to the concrete floor A, and has a size of 915 mm × 610 mm and a thickness of 10 m.
m.

The cork sheet material 1 is formed by mixing a urea-based adhesive, which contains almost no harmful components to the human body, into a lump of cork and pressurizing and heating it to form a plate. And have excellent elasticity (thickness: 6 m
m).

The nonwoven fabrics 2 and 4 are made of fabric fibers and are easily impregnated with glue and adhesive.

The foamed resin sheet material 3 is of a urethane type and does not emit toxic gas during incineration disposal. In addition, a large number of dimples (dents) are formed on the lower surface of the sheet material 3 in order to improve the cushioning property and to increase the area cut off from the concrete floor A.

As the low molecular weight resin-based adhesive, a urethane-based moisture-based (one-pack type) adhesive is used. In addition,
Low molecular weight epoxy-based and silicon-based ones can also be used.

As the water-based paste, a vinyl acetate-based paste is used. However, the paste is not limited to this and may be any paste which is harmful to the human body and contains little.

Therefore, since the floor base material B has the above-described structure, it contains almost no toxic components to the human body. Therefore, harmful components are radiated from the floor base material B. The possibility of causing indoor pollution is very low. Further, the floor constituted by using the floor base material B has excellent heat insulating properties and soundproofing properties.

Here, the case where the floor shown in FIG. 1 is constructed by using the floor base material B described above will be described in detail below. . A urethane-based adhesive (indicated by reference numeral 5 in FIG. 1) is applied to the concrete floor A. . The floor base material B is laid so that the nonwoven fabric 4 is joined to the concrete floor A. In this state, the nonwoven fabric 4 is impregnated with the urethane-based adhesive. In other words, in this floor base material, the adhesive is not simply adhered to the surface portion of the foamed resin sheet material 3 unlike the floor base material described in the section of the prior art, so that the floor base material has a warping force. This part does not come off from the foundation floor even if a crack occurs. . The adhesive hardens if left for one day in the state of. That is, the floor base material B is firmly bonded to the concrete floor A. . When a urethane-based adhesive is applied on the floor base material B and a surface finishing material such as carpet is laid, the floor is completed. The above operation can be performed on the same day.

As described above, the concrete A of the floor base material B
Use a urethane adhesive to attach to the floor,
Since water paste is used for attaching a surface finishing material such as a carpet to a carpet, there is no problem that formaldehyde harmful to the human body is radiated to cause indoor pollution unlike the conventional one. Further, as described in the section of the means for solving the problems, the workability is very good.

The floor using the floor base material B is:
As described above, since the cork sheet material 1 having excellent heat insulating properties and elasticity and the urethane foam sheet material 3 having excellent cushioning properties are the main materials, the floor constructed has a soundproofing and heat insulating function.

[0026]

Since the present invention has the above-described structure, the following effects can be obtained.

[0027] As described at the back of the means for solving the above problems, it was possible to provide a floor base material which does not cause indoor pollution and can be easily bonded.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a floor configured using a floor base material according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the floor base material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cork sheet material 2 Nonwoven fabric 3 Foam resin sheet material 4 Nonwoven fabric 30 Dimple

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI E04F 15/18 601 E04F 15/18 601B

Claims (4)

[Claims] 1. A cork sheet material (1), a non-woven fabric (2), a foamed resin sheet material (3), and a non-woven fabric (4), which are adhered in this order with a water-based paste from top to bottom, A flooring material having a soundproofing and heat insulating function, characterized in that the lower surface side of the nonwoven fabric (4) is attached to a base floor with a low molecular weight resin adhesive. 2. The floor covering material having a soundproofing and heat insulating function according to claim 1, wherein dimples (30) are formed on the lower surface of the foamed resin sheet material (3). 3. The floor base material according to claim 1, wherein the foamed resin sheet material is a sheet material made of urethane foamed resin. 4. The floor substrate according to claim 1, wherein the low molecular weight resin-based adhesive is a urethane-based moisture-based adhesive.