JP2578186Y2 - Floor material - 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 flooring material which is used for flooring materials, especially for the upper floor of a house, and which prevents solid sound from being transmitted downstairs due to impact of a floor surface.

[0002]

2. Description of the Related Art Conventional soundproof building materials for preventing propagation of solid sound due to impact on building materials include synthetic resin sheets, natural rubber sheets, and synthetic rubber sheets having elasticity on the back surface of a floor board. A sheet, or a sheet to which various cushioning materials such as a foam or a nonwoven fabric thereof are adhered is known.

[0003] These sheet-like materials are low-synthetic cushioning materials. If the cushioning material is immediately subjected to an impact force due to the cushioning effect, the buffering time increases while the cushioning material is deformed. That is, even if the time integrals of the impulse and the impact force are constant, the peak value of the impact force and the natural frequency of the impact are reduced, the input energy to the base is reduced, and the sound and vibration due to the impact are both reduced. .

When these cushioning materials are combined on the back surface of a building material, the impact force absorbs energy by expansion and contraction of the cushioning material caused by bending vibration of the building material.

However, the soundproofing function is greatly affected by the thickness ratio between the building material and the cushioning material. In order to improve the soundproofing function, the thickness ratio of the buffering material to the building material needs to be 2-3 times. For this reason, the cushioning material becomes too thick, and there is a problem that the bending of the entire building material is severe and the connection portion of the building material is damaged, and when used as a floor material, it may cause anxiety of walking. .

[0006] In particular, the problem of bending caused by shrinkage of the cushioning material is a problem in cushioning materials using foam sheets.

On the other hand, the soundproofing flooring using the nonwoven fabric as a cushioning material has a small shrinkage problem, but the soundproofing performance of the actually installed soundproofing flooring material is lower than the soundproofing performance certified at the test stage. Had the problem of severe decline.

[0008] This is because the adhesive used to fix the floorboard to the ground surface permeates into the non-woven fabric and hardens in the non-woven fabric at the working stage, thereby reducing the buffer effect of the non-woven fabric. The amount of adhesive applied to the ground surface during construction varies greatly depending on the site installer, and the amount of adhesive greatly affects the soundproofing performance of the installed soundproof flooring. Had a point.

[0009]

In view of the above situation,
The present inventor has made extensive efforts to solve the above-mentioned problems of the prior art, and as a result, has completed the present invention.

That is, the present invention relates to a flooring material comprising a nonwoven fabric sheet 2 made of a synthetic resin adhered to the back surface of a floorboard substrate 1 in which at least one pair of opposed woodcuts is subjected to actual processing x and y. Heat melting on the back surface layer of the nonwoven fabric sheet 2
It is a flooring material characterized by forming a more water-impermeable coating layer 2a.

An embodiment of the soundproof flooring of the present invention will be described below with reference to the drawings. FIG. 1 shows the flooring of the present invention.
For example, plywood, particle board, hard board,
L. V. L. A floor board substrate 1 made of (parallel plywood) or the like and a non-woven sheet 2 adhered to the back surface of the floor board substrate 1. The non-woven sheet 2 is made of synthetic resin fibers such as polyester, polypropylene, and nylon. A non-woven fabric is formed by forming a water-impermeable coating layer 2a on the back side surface layer.

As the water-impermeable coating layer 2a provided on the back surface layer of the nonwoven fabric, only the back surface layer of the synthetic resin constituting the nonwoven fabric is heated to the melting temperature of the synthetic resin, and only the front surface portion is melted. The portion forms an impermeable coating layer.

As described above, the adhesive and the moisture can be prevented from penetrating into the nonwoven fabric sheet 2 by the water-impermeable coating layer formed by the heating and melting provided on the surface layer on the back surface of the nonwoven fabric.

For this reason, even if the installer applies a large amount of adhesive in the on-site construction, the adhesive does not penetrate into the non-woven fabric sheet 2, so that the non-woven fabric sheet 2 having the predetermined thickness at the design stage is not Further, by forming the back groove 3 on the back surface of the floor plate substrate 1, the rigidity of the substrate is reduced, and the impact energy applied to the front surface can be absorbed by the substrate.

Further, a part of the substrate is divided by the back groove, so that sound is not easily transmitted, and the soundproofing effect can be further improved.

Further, in order to improve the soundproofing effect, FIG.
As shown in FIG. 3, for example, an intermediate synthetic resin foam sheet 4 having an excellent buffer effect is laminated in the middle of the substrate 1 such that a foam synthetic resin sheet is sandwiched between plywoods, or as shown in FIG. As described above, a material laminated on the back surface of the floor board substrate via the back surface synthetic resin sheet 5 having a buffer effect can also be used.

As the synthetic resin foam sheet used at this time, for example, an elastic synthetic resin foam such as polyvinyl chloride, polyethylene, polyester, polypropylene, ethylene-vinyl acetate copolymer resin, and polystyrene can be used.

The floor material of the present invention has a water-impermeable coating layer 2a formed on the back surface layer of a nonwoven fabric sheet 2 made of a synthetic resin adhered to the back surface of the floor board substrate 1. The impermeable coating layer 2a can prevent the adhesive and moisture from penetrating into the nonwoven fabric sheet 2.

For this reason, even if a constructor applies a large amount of adhesive in the on-site construction, the adhesive does not penetrate into the non-woven fabric sheet 2, so that the non-woven fabric sheet 2 having the thickness planned at the design stage can be applied to the floor board substrate. 1 is secured on the back surface, and a decrease in soundproof performance can be prevented.

Further, since a synthetic resin is selected as the nonwoven fabric sheet 2, the non-water-permeable coating layer 2a can be easily formed by heating and melting.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a floor material according to the present invention;

FIG. 2 is a sectional view of the floor material of the present invention when a synthetic resin sheet 4 is sandwiched between plywoods;

FIG. 3 is a cross-sectional view of the floor material of the present invention in which a synthetic resin sheet 5 having a buffer effect is laminated on the back surface of the floor board substrate.

[Explanation of symbols]

1: Floor board substrate, 2: Non-woven fabric sheet, 2a: Water-impermeable coating layer, 3: Back groove, 4: Intermediate synthetic resin sheet, 5: Back synthetic resin sheet, x, y: Actual processing.

Claims (1)

(57) [Scope of request for utility model registration] 1. A flooring material comprising a nonwoven cloth sheet 2 made of a synthetic resin adhered to a back surface of a floorboard substrate 1 on which actual processing has been applied to at least a pair of opposite woodcuts. The water-impermeable coating layer 2 is formed on the back surface layer of the nonwoven fabric sheet 2 by heating and melting.
a floor material, wherein a is formed.