JP3105939B2 - Wood flooring for direct application and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a directly bonded wooden flooring and a method for manufacturing the same, and more particularly, to a directly bonded wooden flooring formed by connecting two or more rectangular members by real connection and a method for manufacturing the same. About.

[0002]

2. Description of the Related Art Conventionally, there is a wood flooring for direct application in which two or more rectangular members are connected by actual connection, and a cushioning material is attached to the back surface of the connected rectangular members. These wood flooring materials for direct application are processed by loosening the male and female seeds of the real part, and the male and female seeds are connected in order to have the ability to follow the unevenness of the concrete slab. In this case, the gap between the rectangular members formed on the back surface is filled with a hot-melt adhesive, and the actual joints are connected with flexibility.

Recently, in order to improve the instability of the floor material using the above-mentioned hot-melt type adhesive, which is a drawback of the heat change, the adhesive having high thermal stability and flexibility is used. A method for producing a decorative board which is filled and naturally cured has been proposed (JP-A-1-123701).

[0004] However, the above-mentioned flooring material is a thermoplastic adhesive such as a polyvinyl-based or acrylic-based emulsion-type ethylene-vinyl acetate copolymer, or a phenolic resin or a polyurethane as an adhesive for connecting the respective rectangular members. Use an adhesive that takes a long time to cure, such as a thermosetting resin. Therefore, in order to prevent displacement of the members when the adhesive is not cured, after temporarily bonding the rectangular members using an alkyl cyanoacrylate-based expensive instant adhesive before filling these adhesives. It was necessary to fill the adhesive and allow it to cure naturally. According to the above-described method, the bonding step is troublesome twice, and it takes a considerable amount of time for the adhesive to harden spontaneously. Therefore, the process shifts to the step of attaching a cushioning material to the back surface immediately after joining the rectangular members. Had the disadvantage that it was not possible to do so.

[0005]

The inventors of the present invention have made intensive studies to solve the above-mentioned drawbacks, and as a result, as an adhesive interposed in the above-mentioned gap, an ultraviolet ray which has flexibility even after being cured. By using a line-curing adhesive, it is possible to immediately fix the rectangular members together without temporarily bonding the rectangular members with the instantaneous adhesive, and immediately shift to the subsequent cushioning material attaching process. Heading reached the present invention.

Accordingly, a first object of the present invention is to provide a wooden flooring for direct application, which has a property of following concrete slabs against irregularities. A second object of the present invention is to provide a method of manufacturing a directly bonded wooden flooring material that can shorten the manufacturing period.

[0007]

SUMMARY OF THE INVENTION The above objects of the present invention are at least two or more rectangular members having a male member on at least one long side and a female member on the other side connected at the long side. A wood flooring for direct bonding comprising a wooden flooring made of a member and a cushioning material stuck on the back surface of the wooden flooring, having a gap between the rectangular members on the back side of the wooden flooring. Also, it is continuous or discontinuous in the gap and flexible after curing
The present invention has been attained by a wood flooring material for direct application and a method for producing the same, characterized in that an ultraviolet curable adhesive having the following is interposed.

Hereinafter, an embodiment of the wood flooring for upholstery of the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto. FIG. 1 is a partial cross-sectional view showing an actual connection part of a wooden floor material for upholstery according to the present invention. FIG. 2 is a perspective view showing an example of a directly bonded wooden flooring material of the present invention. In the figure, reference numeral (1) indicates a rectangular member, reference numeral (2) indicates a male member, reference numeral (3) indicates a female member, reference numeral (4) indicates a cushioning material, and reference numeral (5) indicates an ultraviolet curable adhesive.

A rectangular member (1) used in the present invention
Is obtained by processing male seeds (2) and female seeds (3) on at least two long sides, and can be appropriately selected and used from known woody materials. The male fruit (2) and the female fruit (3) to be machined on the long side of the rectangular member (1) are machined with a margin so that they can follow the unevenness of the concrete slab. As shown, it is preferable that only the upper end surfaces of the actual connection portions of the connected rectangular members (1) are formed so as to contact each other without any gap.

The wood flooring for direct upholstery of the present invention is a flooring in which at least two or more of the above-mentioned rectangular members (1) are connected at least by a real part on the long side of the rectangular member (1). The number and shape of the rectangular members (1) are arbitrary as long as the conditions are satisfied. In the present embodiment, as shown in FIG. 2, a wooden flooring for direct attachment in a goose pattern is shown in which four rectangular members (1) are sequentially shifted in the long side direction and connected.

The cushioning material (4) used in the present invention is:
Foams of polyethylene, polyolefin, polystyrene, polyurethane, etc., Daiken sound insulation sheet (trade name of cushioning material manufactured by Daiken Kogyo Co., Ltd.), Sandam KM, Sandam KR (trade name of cushioning material manufactured by Zeon Kasei Co., Ltd.), High-density material / soft vinyl chloride composite sheets, such as soft sound insulation sheet (trade name of cushioning material manufactured by Toyo Plywood Co., Ltd.), sound insulation sheet N, and sound insulation sheet special (trade name of cushioning material manufactured by Sanyo Kokusaku Pulp Co., Ltd.) It can be appropriately selected from known materials such as plastic felt (trade name of cushioning material manufactured by Dynic Corporation) and used.

The most distinctive feature of the wooden flooring material for direct application of the present invention is that the rectangular members (1) are adhered to each other with an ultraviolet curing adhesive (5). The ultraviolet-curable adhesive (5) is an adhesive which is instantly cured by irradiating ultraviolet rays and has flexibility even after being cured. The ultraviolet-curable adhesive (5) may be provided continuously in a gap formed between the rectangular members (1), but is preferably provided discontinuously at an arbitrary interval. In this way, when laying a flooring material near a wall and wanting to use a flooring material smaller in width than the standard width, remove the connected rectangular member (1) at the actual joint without disconnecting it. In addition, the flexibility of the floor material is improved. Specific examples of the UV-curable adhesive (5) used in the present invention include Loctite UV-curable adhesive manufactured by Nippon Loctite Co., Ltd. Among them, 349 having excellent flexibility is particularly preferable. , 350 and LI-298 (all are product numbers).

To cure the UV-curable adhesive (5), an ultraviolet irradiation device is used.
It is preferable to use a device capable of irradiating ultraviolet rays in the vicinity of nm. Specifically, a Loctite ultraviolet irradiation device (UVU-800) manufactured by Nippon Loctite Co., Ltd.
2C type, UVM-2001C type and UVU-0251)
Can be mentioned.

Next, a method for producing the directly bonded wooden flooring of the present invention will be described, but the present invention is not limited thereto. First, when the rectangular members are connected to each other in the long-side direction, a male fruit (2) and a female fruit (3) are formed on each two sides of the rectangular wooden material so that a gap is formed between the rectangular members except for the upper surface. ).

Next, for example, the four rectangular members (1) produced as described above are joined together with the male side (2) and the female side (3) on the long side, with the back side up, and clamped. After the temporary tightening, etc., in the gap formed between each rectangular member (1),
An ultraviolet curable adhesive (5) is filled.

After filling the ultraviolet curable adhesive (5) as described above, the ultraviolet curable adhesive (5) is irradiated with ultraviolet rays. As a result, each of the rectangular members (1) is instantaneously fixed with the ultraviolet-curing adhesive, so that the temporarily fixed clamp can be immediately removed, and the process proceeds to the step of attaching the cushioning material. can do.

[0017]

As described above in detail, the wooden flooring material for direct application of the present invention has flexibility even after hardening for connecting rectangular members.
Since the ultraviolet-curable adhesive is used, the rectangular members can be permanently bonded to each other in a short time without requiring a temporary bonding step as in the related art, and the manufacturing period can be shortened.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing an actual connection portion of a wooden flooring material for straight upholstery according to the present invention.

FIG. 2 is a perspective view showing one example of a directly bonded wooden flooring material of the present invention.

[Explanation of symbols]

 1 ··· Rectangular member 2 · · · male 3 · · · female 4 · · · buffer material 5 · · · UV curable adhesive

Claims (5)

(57) [Claims] 1. A wooden flooring comprising at least two or more rectangular members having at least one male member on one long side and a female member on the other side connected to each other on a long side, A wooden flooring material for direct application consisting of a cushioning material attached to the back surface, and having a gap between the rectangular members on the back surface of the wooden flooring material, continuous or discontinuous in the gap, and cured.
A wooden flooring material for direct application, characterized by being provided with an ultraviolet-curing adhesive having flexibility thereafter . 2. The connecting portion between the rectangular members is located above the actual connecting portion.
It is formed so that only the side end faces contact each other without gaps
The wood flooring for direct application according to claim 1. 3. The ultraviolet-curable adhesive is interposed discontinuously.
The wooden floor material for direct application according to claim 1 or 2, which is made at least. 4. Each rectangular member is formed so as to form a wild goose pattern.
Are sequentially shifted in the long side direction and connected.
3. The wood flooring for direct application according to any one of 3 . 5. A rectangular member having at least one long side
In the other, a female nut is processed into the other, and at least two pieces of the rectangular member are processed.
After fixing and connecting the above at the long side of each of the rectangular members,
In the method of manufacturing the wooden flooring material for direct application of the cushioning material
The machining of the male part and the female part is performed with the male part of the rectangular member.
When the rectangular members are connected to each other at the female part,
So that a gap is formed between the rectangular members on the surface
After connecting the respective rectangular members to each other,
Continuous or discontinuous in the gap formed between the material
Filled with UV curable adhesive that has flexibility after curing
And then irradiating the ultraviolet-curable adhesive with ultraviolet light.
And connecting and fixing each rectangular member.
Manufacturing method of floor material for direct application.