JP2982061B2 - Floor material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to flooring.

[0002]

2. Description of the Related Art Conventionally, there has been known a directly adhered floor material in which a cushioning material such as a synthetic resin or rubber foam material is adhered to the back surface of a floor substrate to impart soundproofing performance and non-absorbent performance of a construction base surface. ing.

[0003] Foams used as cushioning materials are roughly classified into closed-cell foams and open-cell foams. When a closed-cell foam is used as a cushioning material, a floor substrate on the surface is used. The shock is applied to the cushioning material and the shock-absorbing material shrinks and absorbs the shock.However, there is no place for the air in the closed cells to escape during this shrinkage, causing an air spring phenomenon and reducing the soundproofing performance. When the open-cell foam is used as the cushioning material, the air in the air bubbles can move freely because the air bubbles are communicated, and the air spring phenomenon does not occur, so that excellent soundproof performance can be obtained. Things.

[0004]

When these flooring materials are applied, an adhesive is applied to the base surface and then the floor material is fixed while being fitted thereto. When the adhesive is cured while penetrating into the cushioning material, the cushioning function of the cushioning material is reduced.

[0005] Alternatively, after the floor material is fitted, an operator rides on the surface of the floor material instead of a weight in order to obtain a sufficient adhesive force, so that the cushioning material is compressed and the concave and convex portions formed on the back surface are lowered. The adhesive hardens while in contact with the adhesive applied to the ground.

There has been a problem that flooring materials constructed in such a state cannot exhibit sufficient soundproofing performance. In particular, this problem tends to occur when an open-cell foam is used as a cushioning material to be adhered to the back surface of the flooring material. Further, when a floor material is applied to a floor surface of a floor such as a concrete slab, the hardening reaction of the concrete slab may not be sufficiently completed in some cases.

In such a place, a large amount of water is released to the surface of the concrete slab due to the hardening reaction of the concrete slab after the floor slab is constructed, and the water is absorbed by the wooden floor slab and expanded into the floor slab. This causes problems such as warpage and push-up at the joint of the floorboard substrates.

[0008]

In order to solve such problems, the present inventor has conducted intensive studies for the purpose of preventing the deterioration of the soundproofing performance and the expansion of the floorboard substrate by the method of applying the flooring material. As a result, the present invention has been achieved.

[0009] That is, the present invention provides a method in which "a wooden floor material substrate has a hardness of 10 to 40 kg according to JIS K 6767,
A cushion material composed of a foam having a foaming ratio of such a range is adhered, and an adhesive does not penetrate into the back surface of the cushion material, and a sheet material having a vibration damping function is laminated and integrated. Flooring ".

[0010]

According to the flooring material of the present invention, the adhesive does not penetrate into the back surface of the cushioning material layer, and a sheet-like material having a cushioning function is laminated and integrated. The adhesive does not penetrate into the cushioning material, so that the soundproofing function of the flooring material can be fully exhibited regardless of the construction method, and the floorboard substrate warps due to the diffusion of moisture from the floor base surface. It is possible to provide flooring that does not cause any problems.

[0011]

FIG. 1 shows an example of a sectional view of a flooring material according to the present invention. A cushioning material 2 is adhered to the back surface of a flooring material substrate 1, and a sheeting material is provided on the back surface of the cushioning material 2. The state thing 3 is stuck.

As the floor material substrate 1 forming the floor material of the present invention, for example, a plywood, a wood chip board, a wood fiber board, a veneer laminated board alone or in any combination, or a board and a board Synthetic resin sheet with excellent buffer effect between
It is possible to use a laminated sheet of foamed synthetic resin or a sound insulation sheet so as to sandwich the sheet.

An optional decorative layer can be formed on the surface of the substrate. This decorative layer is made of natural veneer, artificial veneer, and nonwoven fabric, paper, veneer sheet lined with synthetic resin sheet, or decorative paper, resin-impregnated paper, nonwoven fabric, paper, synthetic resin sheet, etc. The decorative sheet is formed by bonding using an adhesive, or by directly painting or printing on the surface of the decorative sheet. Further, an overcoat layer can be provided on the surface of the decorative layer.

By providing such a decorative layer, permeation of moisture from the surface side is also prevented, and problems such as warpage, dew condensation, corrosion and the like due to a change in humidity can be solved.

Further, by forming a groove from the back surface side of the floor material substrate 1, the rigidity of the floor material substrate 1 is reduced, and after the impact is applied to the floor material surface, the impact is absorbed by the deformation of the floor substrate itself. Thus, the soundproof performance can be improved.

The cushioning material 2 of the present invention has a cushioning function of absorbing shock energy by contracting and deforming the shock applied to the surface of the floor substrate 1.
For example, a synthetic resin foam or a rubber foam such as a polyethylene resin, a polypropylene resin, a polyurethane resin, and a polystyrene resin can be used.

Furthermore, it is preferable to use an open-cell type foam, since an air spring phenomenon does not occur and an excellent cushioning effect can be exhibited. In addition, by using the open-cell type, excellent performance can be obtained with an excellent restoring force when released from a state contracted by a long-term load.

The expansion ratio is JIS K-676.
A material adjusted so that the hardness according to No. 7 is in the range of 10 to 40 kg is used.

Even if the foaming sheet has the same expansion ratio, the hardness of the foam sheet naturally differs due to the difference in resin. The hardness of the foamed sheet affects the cushioning function as a cushioning material and the amount of sink when a load is applied to the floor material surface. When the foaming sheet is less than 10 kg, the cushioning function is excellent but is too soft. In the case of flooring, there is a problem that the sinking amount becomes large and walking feeling is poor. On the other hand, if it is larger than 40 kg, it is not preferable because it is too hard to perform a sufficient buffer function.

Further, as shown in FIG.
By forming projections and depressions on at least the back side, when the projections of the cushioning material 2 shrink, the recessed space is secured as a place for air in the projection bubbles to move, and more excellent soundproofing performance is obtained. The flooring is obtained. In addition, since the sheet-like material 3 is adhered to the surface of the convex portion of the unevenness formed on the back surface side of the cushion material 2, the portion other than the convex portion surface has bubbles inside when the convex portion of the cushion material 2 shrinks. It is secured as a place for air to enter and exit.

Further, as shown in FIG.
Can be used.
By forming the unevenness on the surface side of the cushioning material 2 in this manner, the same effect is exerted on the surface side of the cushioning material, and the soundproofing performance is further improved. In addition, the convex shape of the unevenness is cylindrical, triangular prism, square prism,
Any shape such as a polygonal prism, a truncated cone, a truncated triangular pyramid, a truncated quadrangular pyramid, and a truncated polygonal pyramid can be used.

When the bumps are formed on the front and back surfaces of the cushion material 2 as shown in FIG. 3, the shapes of the protrusions on the front surface and the back surface, the area ratio of the protrusions to the cushion material surface, and the size of the protrusions The height and the like can be formed differently.
Forming the protrusions with different sizes includes, for example, changing the surface area of the surface of the protrusions or changing the height of the protrusions.

By differently forming these elements alone or in combination, when an impact is applied to the floorboard substrate, the deformation characteristics of the convex portions on the front side and the rear side of the cushion material 2 are different. It is preferable because excellent soundproofing performance can be exhibited over a wider sound range.

In particular, by forming the convex portions on the front surface side and the rear surface side so as to have different sizes, when a local load is applied to the floor plate substrate, the impact absorption due to the local deformation of the floor substrate 1 can be reduced. When the local deformation reaches the cushion material 2, the smaller one of the convex portions formed on the front and back of the cushion material 2 starts to deform first, and then the larger one deforms. It exhibits excellent soundproofing performance due to the absorption of stages.

On the other hand, by forming the area ratio of the convex portion to the whole cushion material differently, even when a local impact is applied, the deformation of the floor material substrate 1 follows the local deformation of the floor material substrate 1. Is reached, the force of the entire floor material substrate as a surface for pushing down the cushion material acts on the entire cushion material 2.

At this time, the projections formed on the front and back surfaces of the cushion material 2 on the side with the smaller area ratio firstly begin to be deformed, and then the side with the larger area ratio is deformed, resulting in a two-stage deformation, and excellent soundproofing. Demonstrate performance.

If the initial local deformation is too large, the walking feeling when walking is poor. Therefore, in order to restrain the local deformation of the floor substrate even a little and spread it over a wide surface, the cushion material is used. It is preferable that the size of the convex portion on the front surface side of No. 2 is larger than the size of the convex portion on the back surface side.

As a method for forming such irregularities of the cushion material 2, the cushioning material 2 can be manufactured by hot-press molding a synthetic resin foam by a hot plate press having an irregular-shaped mold.

Further, the uneven shape by the hot platen press can be formed by using a foam having the same thickness as the cushion material having the desired uneven shape, and denting only the concave portion by hot pressing. Alternatively, it can be formed by using a foam material thicker than the cushion material having the desired uneven shape and forming the uneven shape while reducing the overall thickness.

The sheet-like material 3 of the present invention is a sheet-like material such as a synthetic resin such as polyethylene, polyurethane, vinyl chloride, polystyrene, and rubber, which does not penetrate the adhesive and has a vibration damping function. And a foamed sheet-like material. When a foamed sheet is used, a closed-cell foamed sheet is used because the adhesive does not penetrate.

Further, it is preferable to use a material having a moisture-proof function and excellent adhesive strength by an adhesive. In addition, it is preferable to use a material having a partially roughened surface to enhance the anchoring effect of the adhesive and further improve the adhesive strength.

A sheet having a thickness in the range of 2 mm to 30 μm can be used. By stacking such sheet-like materials 3, when applying the floor material of the present invention, the adhesive applied to the ground surface penetrates into the cushion material 2 and is installed without lowering the soundproofing performance. be able to.

Further, since the sheet-like material has a vibration damping function, it is possible to absorb vibrations that could not be completely absorbed by the cushioning material 2 and to generate noise generated in a room below the floor on which the flooring is constructed. Transmission to the surface of the material can also be prevented.

The cushion material 2 and the sheet material 3 of the present invention
Can be bonded by bonding with an adhesive or heat fusion of the surface of the cushion material 2. When using open cell synthetic resin foam as cushioning material,
To prevent the adhesive from penetrating inside the synthetic resin foam,
It is preferable to use a material having a high viscosity or an adhesive.

The adhesive can be applied and adhered to the entire surface, but can also be applied and adhered partially. Further, when the bumps are formed on the back surface of the cushioning material 2, the adhesive is applied only to the surface of the bumps of the cushioning material. It is preferable that the sheet 3 is not adhered. In the case where the cushion material 2 is bonded by heat fusion, the cushion material 2 can be bonded to the protrusion surface of the cushion material 2 only by heat fusion.

FIG. 4 shows another embodiment of the present invention, in which a woven or non-woven fabric made of synthetic resin or natural fiber, a non-woven fabric, paper or the like is provided between a floor substrate 1 and a cushion material 2. Adhesive absorbing material or cushion material 2
It is also possible to adopt a configuration in which the same adhesive as the sheet-like material to be adhered to the back surface side does not permeate and the adhesive permeation prevention layer 4 having a vibration damping function is interposed.

When a groove is formed from the back side of the floor substrate 1, the adhesive permeation prevention layer 4 is adhered to the floor substrate 1 so that the rigidity of the floor substrate 1 is not increased. Are preferred.

[0037]

According to the flooring material of the present invention, it is possible to perform the construction without lowering the soundproofing performance due to the adhesive applied to the ground surface penetrating into the cushion material 2 during construction.

Further, since the sheet-like material has a vibration damping function, it is possible to absorb vibrations that could not be completely absorbed by the cushion material 2 and to generate sound generated in a room below the floor where the floor material is constructed. Transmission to the surface of the flooring material can also be prevented.

[Brief description of the drawings]

FIG. 1 is an example of a sectional view of a flooring material of the present invention,

FIG. 2 is a cross-sectional view in the case where irregularities are formed on the back surface side of the cushion material 2,

FIG. 3 is a cross-sectional view in the case where irregularities are formed on the front and back surfaces of the cushion material 2,

FIG. 4 is a cross-sectional view when an adhesive permeation preventing layer 4 is interposed between the floor material substrate 1 and the cushion material 2;

[Explanation of symbols]

1: floor material substrate, 2: cushion material, 3: sheet-like material,
4: An adhesive penetration preventing layer.

Claims (2)

(57) [Claims] 1. A JIS K6 on the back of a wooden flooring substrate
A cushion material made of a foam having an expansion ratio such that the hardness according to 767 is in the range of 10 to 40 kg is adhered, and the adhesive does not penetrate into the back surface of the cushion material and has a vibration damping function. Floor material made by stacking and integrating sheet materials. 2. The flooring material according to claim 1, wherein the cushion material layer is made of an open-cell synthetic resin foam.