JP2582092Y2 - 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 technology for preventing warpage of a floor material, particularly a heat-resistant floor material.

[0002]

2. Description of the Related Art Flooring materials in which decorative veneers are laminated on the surface of a cloth plywood and cut grooves are formed on the back side of the cloth plywood have been known. As shown in FIG. 2, this flooring is a flooring for direct application in which a decorative thin veneer 2 is adhered and laminated on the surface of a 5-ply or 7-ply cloth plywood 1 . In bonding the decorative thin veneer 2 to the surface of the cloth plywood 1, a water-soluble adhesive is applied on the cloth plywood 1, and the decorative thin veneer 2 such as a Lauan veneer is placed thereon and heated and pressed. In this case, 110 ° C to 130 ° C
And heat press. In addition, there is no
The thickness of each veneer constituting the cross plywood 1 is the same thickness
In addition, the back side of the cross plywood 1
To deal with irregularities in forming kerfs 3
Cut the groove 3 from the back of the plywood 1
It is formed so as to reach the second layer veneer from the top of the loss plywood 1.
is there.

[0003]

However, when a water-soluble adhesive is applied to the cloth plywood 1 and the decorative thin veneer 2 is placed thereon and set, the moisture of the water-soluble adhesive is removed from the decorative thin veneer 2.
Is absorbed and the decorative thin veneer 2 expands (extends), and when pressed as it is, moisture evaporates in a heat-dissipating state after the press, so that a force of contracting to the original size acts to warp as shown in FIG. 2 as a whole. There is a problem. In this case,
Therefore, as shown in FIG. 2, a cut groove 3 is formed on the back side of the cross plywood 1 from the back side of the cross plywood 1 in order to cope with irregularities.
It is formed so as to reach the second layer veneer from the top of the plywood 1
However, the thickness of the face veneer on the surface of the cross plywood 1,
As shown in FIG. 2, the second layer veneer from the top of the cross plywood 1
Thicker than the distance from the upper end to the upper end of the kerf 3
Therefore, warp of face veneer caused by the above-mentioned adhesion is crossed.
It is difficult to control mechanically by the second layer veneer from the top of the plywood
There is a problem that that.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a flooring capable of preventing warpage.

[0005]

The flooring material of the present invention is a flooring material in which a decorative veneer veneer 2 is adhered and laminated on the surface of a cloth plywood 1 and a cut groove 3 is formed on the back side of the cloth plywood 1. Then, the cut groove 3 is formed from the back of the cross plywood 1
It formed as extending from the top to the second layer of veneer 1b, on the groove 3 cut the thickness of the surface of the cross plate 1 face veneer 1a
From the edge to the upper end of the second layer veneer 1b from the top of the cross plywood 1.
Is characterized in that it is thinner than the length at .

[0006]

[Function] The veneer warps due to the effect of bonding and laminating the decorative thin veneers 2, but the thickness of the face veneer 1a of the cross plywood 1 is cut.
2nd veneer 1 from the top of the cross plywood 1 from the upper end of the groove 3
By making it thinner than the length up to the upper end of b, warpage is prevented. The prevention of warpage can be achieved by a simple improvement of making the face veneer 1a thin.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on embodiments shown in the accompanying drawings. The cross plywood 1 is a single ply laminated and integrated so that the fiber directions cross each other, and a 5-ply or 7-ply cloth is used. On this cross plywood 1, a decorative thin veneer 2 is adhered and laminated on the front side. Here, the decorative thin veneer 2 has a thickness of 0.25 mm, and the cloth plywood 1 has a thickness of 9 mm. A large number of cut grooves 3 are formed on the back surface side of the cross plywood 1, and the cut grooves 3 are formed so as to reach the second layer veneer 1b from the top of the cross plywood 1 as shown in FIG. is there. Decorative thin veneer 2
Are crossed so as to be substantially perpendicular to the fiber direction of the face veneer la of the surface layer of the cloth plywood 1 to enhance crack resistance.

The thickness of the face veneer 1a and the other veneer 1b on the surface layer of the cross plywood 1 is usually 1.2 mm (thickness of a plywood maker). In this case, when the decorative thin veneer 2 is adhered to the cloth plywood 1 and laminated, warpage occurs. However, in order to suppress such warpage, in the present invention, the face veneer 1a has a thickness of 0.7 mm. Performing the above sanding to reduce the thickness of the face veneer 1a to 0.5 mm or less ,
Thereby, the thickness of the face veneer 1a is reduced.
Upper end of veneer 1b of second layer from top of cross plywood 1 from upper end
Thinner than the length. Thus, by bonding and laminating the decorative veneer 2 on the surface of the cloth plywood 1, warpage is likely to occur due to the effect of the decorative veneer 2 as in the prior art . Cut the thickness and the top of groove 3
From the top of the cross plywood 1 to the upper end of the second layer veneer 1b
By bonding the decorative thin veneer 2 to the cross plywood 1 by making it thinner than the length of
It can be mechanically suppressed by the veneer 1b of the second layer from the top, and the whole flooring can be in a state without warpage. In the present invention, the cut groove 3 is formed on the back side of the cross plywood 1.
The reason for the provision of is to give the flooring as a whole a “hip” flexibility so that it can cope with unevenness of the construction base such as a concrete slab.

In the manufacturing process of the flooring material, first, the face veneer 1a of the cross plywood 1 is sanded to make it sufficiently thinner than the thickness of the other veneer 1b of the cross plywood 1.
Next, the decorative thin veneer 2 is adhered with an adhesive and hot-pressed, and thereafter, the surface of the face veneer 1a is # 180,
Sanding is performed with the # 240 material, and then processing of the actual 4 is performed. Then, after coloring and painting, they are divided into small pieces, molded and commercialized.

[0010] The floor material having the above-mentioned structure has various uses, such as when it is directly pasted on a concrete slab or when it is pasted on a heating panel, but it is not particularly limited. However, since no warpage is generated by the above-described configuration, there is no problem as a floor material used particularly in a portion affected by heat.

When the thickness of the back veneer 1c on the back surface of the cross plywood 1 is made thinner than the thickness of the face veneer 1a, warpage is further suppressed when the decorative thin veneers 2 are bonded and laminated. Is what you can do.

[0012]

In the present invention, according to the invention], as described above, cut
The groove is the second layer from the top of the cross plywood from the back of the cross plywood
Formed up to veneer, facing the face of the cross plywood
Cut the thickness of the veneer from the top of the groove and from the top of the cross plywood
Because it is thinner than the length to the top of the veneer of the layer ,
The second layer from the top of the cross plywood, the floor material with the kerf on the back side trying to warp under the effect of the decorative thin veneer side
(Ie veneer directly under face veneer) mechanically suppressed
And, thereby it is possible to prevent warping, and those may be simple improvement of warp prevention is thin face veneer.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view showing a warped state of a conventional flooring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cross plywood 1a Face veneer 2 Decorative thin veneer 3 Cut groove

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04F 15/04

Claims (1)

(57) [Scope of request for utility model registration] 1. A flooring material in which a decorative thin veneer is adhered and laminated on a surface of a cloth plywood, and a cut groove is formed on a back side of the cloth plywood, wherein the cut groove is formed from a back surface of the cloth plywood.
Formed to reach the second layer veneer from the top of the plywood, cut the thickness of the face veneer on the surface of the cross plywood from the upper end of the groove
From the length from the top of the cross plywood to the upper end of the second layer veneer
Flooring, characterized in that also are thinner.