JP3010352B2 - 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 wooden flooring.

[0002]

2. Description of the Related Art Conventionally, as a wooden flooring material, a plywood substrate having a decorative layer such as a veneer adhered to a surface thereof and a joining fruit formed by cutting the side surface is generally provided. In recent years, wooden flooring materials have been used in various places, and various types such as those with soundproofing properties according to the place of use, those that can withstand walking on foot, and those with excellent bending strength are used. Different types of flooring have been offered.

[0003]

Among such flooring materials, a flooring material directly adhered (directly attached) on a concrete base by an adhesive is used to mount a piano, a personal computer stand, etc. on its upper surface. Heavy load is placed. Furthermore, casters are attached to the lower ends of the legs that support them, and are movable.

[0004] When such a caster moves, the unevenness of the concrete foundation, the clearance for the actual fitting of the flooring material, and the weight of the flooring material due to the heavy weight ride on the joint between the flooring materials. Due to the compressive deformation, a step occurs at the joint. For this reason, there is a problem that the floor material is damaged when the caster crosses the step generated at the joint.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been completed as a result of intensive studies for the purpose of providing a novel flooring material capable of withstanding the movement of casters supporting such heavy objects. That is, in the present invention, the wood fiber board with the hard layer exposed on the front and back, the fruit is formed so that the rising part on the male surface side is located within the thickness range of the hard layer on the front side, and the surface is optional. A flooring material in which a decorative wooden board is laminated and integrated on the surface of the wood fiber board.

[0006]

The flooring material according to the present invention is a wooden fiberboard having at least a hard layer exposed at least on its surface, at the mouth of the flooring material.
By forming the rising portion on the male front surface side in the thickness range of the hard layer on the front surface side, a floor material having extremely excellent strength at a portion for supporting the male at the mouth of the wood fiberboard is obtained. For this reason, when the caster supporting a heavy object passes through the joint of the flooring material, the load is applied to the male surface, and the load concentrates on the male surface's rising part, even on the wood entrance surface supporting the male. It has a strength enough to withstand even if it does, and the joint of the flooring material is not broken.

[0007]

FIG. 1 shows an example of a sectional view of a flooring material according to the present invention. A wooden fiberboard 1 having a hard layer 1a exposed on the surface thereof has a male mouth 2 formed at the mouth end thereof. Is formed so as to be within the thickness range of the surface-side hard layer 1a of the wood fiber board 1. Further, the wooden board 3 having the optional makeup 4 formed on the surface is laminated and integrated on the surface of the wooden fiber board 1. In the flooring material of FIG. 1, a hard layer 1b is also formed on the back side of the wood fiber board 1, and the hard layer 1b
Is also exposed.

The wood fiber board 1 used in the flooring of the present invention is
Coniferous wood such as pine, cedar, cypress, or lauan, kabor,
It is obtained by compression-molding wood fibers obtained by defibrating raw wood of hardwood such as chestnuts and poplars, or wood chips obtained by cutting waste materials by a conventional method by a dry method or a wet method. A wood fiber board in which a hard layer having a significantly higher specific gravity than the other parts is formed near the front and back sides by increasing the water content of the wood fiber and the amount of the adhesive applied to the wood fiber is increased.

In addition, since a very low specific gravity portion is present on the outermost surface and the outermost surface that come into contact with the hot plate during heating and pressing, a hard layer is formed on the upper and lower surfaces by sanding the upper and lower surfaces. Use the exposed one.

The specific gravity of the wood fiber board 1 is 0.76 to 1.14.
In which the specific gravity of the hard layer is increased in the range of 1.1 to 1.5. If the specific gravity range of the wood fiber board 1 and the specific gravity of at least the hard layer 1b exposed on the surface are lower than the above ranges, even if the position of the male seed 2 is formed within the range of the present invention, the caster having a high weight is used. Is undesirably easily damaged by passing through the joint.

In the flooring material of the present invention, the mating face is fitted and connected with an adjacent flooring material, so that the truss 2 is attached to the two woodcutting faces orthogonal to the four rounds of the woodcutting face, and the remaining facing woodcut faces are connected. To form female seeds 5 FIG. 1 shows a state in which a male nut 2 is formed on a wood fiber surface of a wood fiber board 1 of one flooring material, and a female nut 5 that can be fitted thereto is formed on a wood fiber surface of the other flooring wood fiber board 1. Show.

Further, the front side rising portion 2a of the male 2
Is formed so as to be within the thickness range of the surface-side hard layer 1a of the wood fiber board 1. By setting the position of the male seed 2 as described above, the wood fiber board 1
The mechanical strength such as the bending strength and the peeling strength of the inside of the woody stencil 1 from the mouth to the thickness of the thickness portion applied to the surface is increased.

For this reason, when a caster supporting a heavy object passes over the joint of the flooring material, a load is applied to the male surface, and the male is bent toward the rear surface around the rising portion on the male surface. Further, from the rising portion 2a on the masculine surface side to the inside of the wood fiber board 1 at the same thickness, a force for peeling and breaking the wood fiber board 1 works. Has sufficient strength to withstand, and can prevent breakage of the floor material joint.

It is to be noted that the fruit formed at the mouth of the flooring material is generally formed such that one of the opposed mouths is a male fruit and the other is a female fruit, but the present invention is not limited to this shape.
It is also possible to form a floor material in which both opposing cut ends are male and a floor material in which both opposing cut edges are female, and to alternately construct these.

Also, as shown in FIG. 1, by exposing the hard layer 1b on the back surface side of the wood fiber board 1, the exposed hard layer 1b functions as a moisture-proof layer for preventing the floor material from absorbing moisture. I do. For this reason, in the construction method of applying the adhesive to the floor base surface and fixing the floor material of the present invention via the adhesive, the moisture in the adhesive and the moisture radiated from the base surface are absorbed from the floor material back surface. Therefore, it is possible to suppress the occurrence of problems such as warpage of the flooring material and push-up of the joint caused by the above. Furthermore, since the adhesive has good wettability and the peel strength at the bonding interface is strong, the peel strength of the flooring material is also excellent.

As the wood board 3 of the present invention, wood chipboard such as plywood, parallel plywood (LVL), particle board, wafer board, flake board, strand board, stick board, wood fiber board, etc. Can be used. In addition, among these wood boards 3, a wood fiber board is preferable.

FIG. 2 shows a configuration in which, similarly to the wood fiber board 1, the wood fiber board having the hard layers 3a and 3b exposed on the front and back surfaces is used as the wood board 3, and the wood fiber board on which the male fruit 2 is formed is shown. 1
The hard layer 1a on the front side and the hard layer 3b on the back side of the wood fiber board (wood board 3) laminated and integrated on the surface thereof are continuously arranged.

For this reason, the front side rising portion 2 of the male 2
a to the surface of wood fiber board 1 and wood fiber board (wood board 3)
The bending strength and the peel strength of the inside of the wood fiber board 1 and the wood board 3 from the edge of the wood at the thickness of the hard layer 3b on the back surface side are extremely high. With such a configuration, the force pressing the male fruit downward is supported by the whole of the hard layer 1a and the hard layer 3b. This structure can sufficiently withstand the force to be destroyed, and further increases the amount of load that can be withstood by the joints of the floor members including the male.

The optional makeup 4 formed on the surface of the wooden board 3 of the present invention includes a natural veneer, an artificial veneer obtained by cutting natural wood, a veneer sheet lined with nonwoven fabric, paper, and a synthetic resin sheet. Or, decorative paper, resin impregnated paper,
A decorative material such as a nonwoven fabric, paper, or a synthetic resin sheet can be used. In addition, an overcoat layer can be provided on the surface of the decorative layer 4.

Further, it can be formed by directly printing, painting or the like on the surface of the wooden board 3. By forming such an optional makeup 4, the permeation of moisture from the surface side is also prevented, and problems such as warpage, dew condensation, and corrosion due to a change in humidity can be solved.

Furthermore, due to the passage of the heavy casters, not only at the joint of the flooring material but also at the surface of the flooring material, the portion on which the casters are mounted shrinks entirely due to the load from the front surface of the floor material to the back surface. Deformation is caused, and the deformation of returning to the original state by moving the caster is repeated.

Furthermore, since the caster moves while the circular tire rotates, the load on the surface of the flooring material is shifted in the direction of movement of the caster from the direction of gravity. Since the force acts in such a direction, when the decorative material is adhered to the surface of the wooden board 3, it is easily peeled off from the adhesive surface.

For this purpose, a natural veneer, an artificial veneer, a nonwoven fabric, paper, a veneer sheet lined with a synthetic resin sheet, or a decorative material such as a decorative paper, a resin-impregnated paper, a nonwoven fabric, a paper, a synthetic resin sheet, etc. are adhered. In this case, the wooden board 3 is hardened while being impregnated with an adhesive for sticking the decorative material to the wooden board 3 and a part of a top-coating synthetic resin applied to the surface of the decorative board. It is preferable to improve the adhesive strength with the decorative material and to prevent the internal peeling of the decorative material by impregnating and hardening the adhesive and the synthetic resin in the decorative material.

FIG. 3 shows the wood fiber board 1 in which a back groove 6 is formed on the back surface. By forming the back groove 6 in this manner, the plasticity of the flooring material can be improved, and even if the ground surface on which the flooring material is constructed has unevenness, the flooring material can be easily formed along the unevenness. Can be transformed. If the rigidity of the flooring is too high,
It is not possible to follow the unevenness of the lower ground, and a gap is left between the floor material and the ground surface, particularly in a portion where the ground surface is concavely concave.

When a high-weight caster passes over the surface of the flooring material at the portion where such a gap has occurred, the caster is supported by the bending strength of the flooring material, and the deformation that the flooring material is easily pressed against the ground surface is prevented. Will occur. By repeating such deformation, buckling occurs in the substrate of the flooring material, or the decorative material on the surface is peeled or cracked.

Further, a moisture-proof sheet 7 is provided on the back of the wood fiber board.
Can be attached. As the moisture-proof sheet, a laminate having a moisture-proof layer such as a synthetic resin layer between paper layers such as a synthetic resin sheet and a polylaminate sheet can be used.

[0027]

According to the flooring material of the present invention, the masculine formed at the mouth of the flooring material has a thickness within the range of the thickness of the hard layer on the front side of the wood fiber board 1 in which at least the hard layer on the surface is exposed. The rising portion 2a on the masculine front side is formed in the
The mechanical strength such as the bending strength and the peeling strength of the inside of the wood fiber board 1 from the mouth end to the thickness part from the rising portion 2a to the surface of the wood fiber board 1 is increased.

Therefore, when a caster supporting a heavy object passes over the joint of the flooring material, a load is applied to the male surface, and the male is bent toward the rear surface around the rising portion on the male surface side. Of the wood fiber board 1 from the rising part 2a on the male surface side to the inside of the wood fiber board 1 at the same thickness, but the flooring material of the present invention is not enough. It has strength enough to withstand the flooring and can prevent breakage of the floor material joint.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a floor board in which a wood fiber board 1 and a wood board 3 are laminated,

FIG. 2 is a cross-sectional view after laminating a wooden board 3 having front and back hard layers 3a and 3b.

FIG. 3 is a cross-sectional view when a back groove 6 is formed on the back surface of the wood fiber board 1;

[Explanation of symbols]

1: wood fiber board, 1a, 1b: front and back hard layers, 2: male, 2a: rising portion, 3: wood board, 3a, 3b: front and back hard layers, 4: makeup, 5: female, 6: Back groove, 7: moisture-proof sheet.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-279380 (JP, A) JP-A-7-279382 (JP, A) JP-A 5-28839 (JP, U) JP-A 6-279380 7904 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) E04F 15/04

Claims (1)

(57) [Claims] 1. A wood fiber board in which a hard layer is exposed at least on the surface, wherein a fruit is formed such that a rising portion on the male surface is located within a thickness range of the hard layer on the surface. A flooring material in which a wooden board provided with optional makeup is laminated and integrated on the surface of the wood fiber board.