JP2001150414A - Ligneous floor covering material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor covering material, in which in the case of directly sticking a ligneous floor covering material to the floor substrate of a building by an adhesive, even if pressure is added when a nonwoven fabric cushioning material is stuck to the ligneous floor covering material, the adhesive is not penetrated to the inside of the nonwoven fabric and sound insulation performance is stabilized. SOLUTION: In the ligneous floor covering material 8, in which a nonwoven fabric cushioning material 5 is directly stuck to the rear of a ligneous base material 6 having the surface subjected to decorative finishing, polyester-based thermally fused fiber arranged on the surface side of the nonwoven fabric cushioning material 5 used for adhesion to the ligneous base material is fused by heat and treated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden flooring material which is directly attached to a floor base of a building such as a house with an adhesive.

[0002]

2. Description of the Related Art Conventionally, a direct-attached flooring material used for an apartment house or the like has been provided with a number of grooves on the back surface of a wooden base material in order to make the floor base material more compatible with the floor substrate, and a soft surface is provided on the back surface of the wooden base material. A method of attaching a cushioning material has been adopted. In particular,
In the soundproof flooring material designed to reduce the living sound from the upper floor, the groove provided on the back surface of the wooden base material tends to be deep, and the cushioning material tends to be soft. In many cases, a resin foam sheet or a nonwoven fabric is used as the cushioning material.

[0003] In the case of a soundproof floor material, in order to maintain a higher life sound insulation performance, the cushioning material must be softened as a countermeasure. Although the use of a nonwoven fabric as a cushioning material is very effective in improving the soundproofing performance, the basis weight of the nonwoven fabric tends to decrease with the improvement in the soundproofing performance of the flooring material.
However, the decrease in the basis weight of the nonwoven fabric means that the amount of fibers used is small, and the amount of fibers on the surface of the nonwoven fabric provided for bonding to the wood base material is small. The problem that the adhesion becomes weak tends to occur.

[0004] In order to solve the problem of the adhesive strength, a method of increasing the amount of the adhesive to be applied and bonding by applying pressure is conceivable. However, since the adhesive permeates and hardens into the inside of the non-woven fabric, it also has Since the non-woven fabric is hardened while being crushed by pressure, such measures for flooring intended for soundproofing performance will rather impair the softness of the non-woven fabric, and the soundproofing performance will be deteriorated. I can't say.

As an alternative measure, a thin paper or a sheet-like material such as spunbond is pre-applied to the surface of the non-woven fabric using a powdery adhesive such as EVA or a film-like adhesive, and the thin sheet is bonded to a wooden substrate. It is possible to make the adhesion stable. However, this method also requires extra labor of bonding a nonwoven fabric with a small basis weight to a thin sheet, which raises manufacturing costs and cannot be said to be an appropriate method.

[0006]

An object of the present invention is to provide a flooring material in which the adhesion between such a wooden base material and a nonwoven fabric cushioning material is stabilized and the quality of the flooring material is improved.

[Means for Solving the Problems]

That is, the present invention relates to a wooden flooring material comprising a nonwoven fabric cushioning material adhered to the back of a decoratively finished woody fabric substrate with an adhesive, which is disposed on a floor substrate, and the nonwoven fabric cushioning material comprises A wood flooring material characterized in that the fiber on the surface side to be used for bonding is melted. Further, the present invention is the above-mentioned wooden flooring material, wherein a polyester-based heat-sealing fiber is used as a fiber on the surface side used for bonding with the wooden base material of the nonwoven fabric cushioning material.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an example of a nonwoven fabric cushioning material used in the present invention, FIGS. 2 and 3 are cross-sectional views of a conventional nonwoven fabric cushioning material, and FIG. 4 is an example of a wooden flooring material of the present invention. FIG. As shown in FIG. 4, the wooden flooring 8 of the present invention has a structure in which the nonwoven fabric cushioning material 5 is adhered to the back surface of the wooden base 6 with an adhesive. The front side of the wooden base material 6 is decoratively finished, and the nonwoven fabric cushioning material 5 is attached to the back side. The surface of the nonwoven fabric cushioning material 5 on the side of the bonding surface (front surface side) with the wood substrate 6 has a structure in which the fibers are subjected to a heat melting treatment. The back surface of the wooden base material 6 is desirably grooved.

As shown in FIG. 3, the conventional non-woven fabric cushioning material is obtained by laminating a polyester fiber spun bond 2 and a low-density non-woven fabric 1 obtained by needle-punching polyester fibers. It becomes an adhesion surface. The polyester fiber spunbond 2 is adhered so that an adhesive used for construction, such as an epoxy-based adhesive or a urethane-based adhesive, does not easily penetrate into the low-density nonwoven fabric when the floorboard is adhered to the floor substrate. And a film adhesive such as EVA is used for attachment.

Normally, in the bonding operation at the time of manufacturing the wooden flooring material, an adhesive is applied to the wooden base material side and then bonded to the nonwoven fabric cushioning material, and curing is performed by applying pressure to make the bonding more reliable. At this time, the non-woven fabric is pressed and crushed,
If the amount of adhesive applied is too large or too much pressure is applied, the adhesive will harden while penetrating deep into the non-woven fabric, and the non-woven fabric cannot be restored after depressurization, and the required softness of the non-woven fabric Finish on flooring with That is,
Skill is required to control the amount of adhesive applied and to control the pressure during bonding. In order to solve this, as shown in FIG. 2, if a sheet material 3 such as a resin sheet, paper, or spunbond is attached to the surface of the low-density nonwoven fabric 1 that has been needle-punched, the penetration of the adhesive can be prevented. Although the problem can be solved, there is a problem that the production is troublesome.

The nonwoven fabric cushioning material used in the present invention has a portion of a melted fiber 4 on the surface of a needle-punched low density nonwoven fabric 1 as shown in FIG. It is necessary that at least one kind of fiber constituting the low-density nonwoven fabric 1 is heat-fusible, but desirably, the surface portion is selected by arranging fibers that are easily melted by heat on the surface side of the low-density nonwoven fabric 1. It is effective if it is easily melted. The degree of heat melting may be such that the fibers are fused to each other to such an extent that the penetration of the adhesive into the interior is suppressed, but it is not necessary to form a complete fused layer since some penetration may be allowed.
The material of the low-density nonwoven fabric 1 is preferably a thermoplastic resin fiber such as polyester, and the material of the melted fiber 4 is the same as that of the low-density nonwoven fabric 1 or a polyester-based heat-resistant material having a lower melting point. Fused fibers are preferred.
The adhesive side (back side) of the nonwoven cushioning material with the floor substrate comes into contact with the floor substrate to which the adhesive has been applied, so that the penetration of the construction adhesive using resin sheets, paper, spunbond, etc. It is desirable to stick a sheet-shaped material devised so as to prevent it.

The wood substrate 6 used in the present invention is a floor base generally used for flooring, and is applied on a surface with a decorative veneer and further painted. In most cases, as shown in FIG. 4, the plywood is made of plywood having about five layers, and the grooves 7 are formed at intervals of 10 to 100 mm from the back surface of the base material. Are appropriately adjusted so that the depth of the groove becomes deep without practically causing a problem. These conditions of the wood substrate 6 and the nonwoven fabric cushioning material 5 are determined according to the required soundproofing performance, and are not necessarily specified.
The thickness of the wooden base material 6 is preferably about 5 to 20 mm, and the basis weight of the nonwoven fabric cushioning material 5 is preferably about 100 to 700 g / m ² . The wood substrate 6 and the nonwoven fabric cushioning material 5 are preferably bonded to each other using an adhesive between the back surface of the woody substrate 6 and the surface of the nonwoven fabric cushioning material 5 on the melted fiber 4 side.

[0013]

EXAMPLE 1 A wood base material was used in which grooves of 1 mm width were inserted at intervals of 15 mm from the back surface to the fourth layer of a decorative plywood composed of five layers having a thickness of 9 mm.
For the veneer veneer, use sliced veneer of oak wood of 0.3 mm,
The surface was coated with a polyester resin. In addition, a non-woven cushioning material was used in which the surface of a needle-punched non-woven fabric made of polyester fiber and having a basis weight of about 300 g / m ² was melted. Approximately 110
80 g / m ^{2 of} polyester fiber that melts at a temperature of 80 ° C. was melted. On the back surface, a spun bond of 40 g / m ² was attached using an EVA film adhesive. The floor material had a width of 150 mm and a length of 900 mm. The nonwoven fabric cushioning material and the wooden base material were bonded together to obtain a wooden flooring material. The bonding was performed by applying a room-temperature-curable vinyl acetate-based adhesive at an application amount of 120 g / m ² . After lamination, curing was carried out at a pressure of about 1 kg / cm ² for 1 hour. The measurement was performed after standing for 2 days after decompression.

Comparative Example 1 In Example 1, the fibers were not melted on the surface of the nonwoven fabric,
A wooden flooring was manufactured in the same manner except that a nonwoven fabric cushioning material to which a resin sheet was attached was used.

Comparative Example 2 A wooden flooring was manufactured in the same manner as in Example 1, except that the fiber on the surface of the nonwoven fabric was not melted. .

The results of the above Examples and Comparative Examples are tabulated.
The soundproofing performance was measured using a beam section area of about 13 m ^{2 and} a thickness of 1 mm.
Install the floor material on a 50mm ordinary concrete slab,
A lightweight impact noise test was conducted using ISA1418, and JIS
The sound insulation performance was determined by A1419. As shown in Table 1, it was confirmed that the examples were superior to the comparative examples.

[0017]

[Table 1]

[0018]

According to the present invention, since the nonwoven fabric cushioning material used for the wooden flooring material of the present invention is provided with a fiber fusion portion on the bonding surface with the woody flooring material, The adhesive does not penetrate into the non-woven fabric even if pressure is applied to
There is an advantage that a floor material having a stable sound insulation performance can be supplied. Further, there is an advantage that the nonwoven fabric cushioning material is easy to manufacture and can be obtained at low cost.

[Brief description of the drawings]

FIG. 1 is a sectional view of a nonwoven fabric cushioning material.

FIG. 2 is a cross-sectional view of an improved conventional nonwoven cushioning material.

FIG. 3 is a cross-sectional view of a conventional nonwoven fabric cushioning material.

FIG. 4 is a cross-sectional view illustrating an example of the flooring material of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Low density nonwoven fabric 2 Polyester fiber spun bond 3 Sheet material 4 Melted fiber 5 Nonwoven fabric cushioning material 6 Wood base material 7 Groove 8 Wood floor material

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B250 AA05 CA11 DA04 EA02 EA13 FA09 FA21 FA28 FA31 FA33 FA37 GA03 4F100 AK41B AK41C AK68G AP00A BA02 BA03 BA07 BA10A BA10C BA13 CB00 DG15B DG15C DG19B EC09 EJ83 GB08

Claims (2)

[Claims] 1. A wooden flooring material which is arranged on a floor base and has a nonwoven fabric cushioning material adhered to the back surface of a decoratively finished woody fabric substrate with an adhesive, for use in bonding the nonwoven fabric cushioning material to the woody substrate. A wooden flooring material, characterized in that fibers on the surface side are subjected to a melting treatment. 2. The wooden flooring material according to claim 1, wherein a polyester-based heat-sealing fiber is used as the fiber on the front side to be bonded to the wooden base material of the nonwoven fabric cushioning material.