JP2799334B2 - Floorboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel which is easy to carry to a floor substrate, absorbs unevenness by improving the familiarity with a floor substrate, and is prevented from being damaged during construction.

[0002]

2. Description of the Related Art Conventionally, floor joints have been proposed in which a groove is provided on the surface of a floor board and a groove is formed on the back surface in a direction parallel to the groove.

The rigidity of the floorboard itself is reduced by forming such a groove, and the floorboard is well adapted to the groundwork and can absorb irregularities. However, on the other hand, the strength of the floorboard itself is low in the portion where the concave groove and the kerf are formed, and the floorboard is easily damaged by being carried, bent or broken at the time of construction.

In order to eliminate the above-mentioned problem, it has been proposed to provide a region in which a cut groove having an arbitrary interval is not formed on the back surface corresponding to the concave groove on the front surface. Since it has high rigidity itself, it has poor adaptability to the floor substrate and has a portion that cannot be absorbed in unevenness, so that workability is reduced.

[0005]

[Technical Means] Cosmetic materials 2 and 3 are adhered to the front and back surfaces of a substrate 1, and a plurality of back grooves 4 reaching the substrate 1 are formed on the back surface thereof. Young's modulus against bending load from the side is 9000 to 25000 kg / c
floorboard the actual 5, 5 provided on the butt end edges together are m ^2.

[0006]

DESCRIPTION OF THE CONFIGURATION As the substrate 1, a plywood, a medium density fiber board, a hard fiber board, a particle board, a flake board, a stick board, an oriented strand board, a single-layer laminated material and the like are used.

[0007] Cosmetic materials 2 and 3 are attached to the front and back surfaces of the substrate. As the decorative materials 2 and 3, veneers, decorative paper, decorative impregnated paper, decorative synthetic resin sheets, and the like are used.

Further, the thickness of the veneer is 0.15 to 1.5.
A rotary veneer, a sliced veneer, a half-rotary veneer, or a sword veneer having a thickness of about mm is used, and it is preferable that the fibers are adhered to the front and back surfaces of the substrate so that the fiber directions are the same.
In addition, the veneer can be provided on the back side with Japanese paper, non-woven fabric,
A backing material such as thin paper or reinforced paper is attached. After applying an adhesive to the front surface, the back surface, or the front and back surfaces of the substrate 1,
The decorative materials 2 and 3 are laminated and pressure-bonded.

Pressing is performed using a flat press or roll press.
It is performed by hot or cold pressure. Adhesives are vinyl acetate resin, urea resin, melamine resin, epoxy resin, phenol resin, acrylic resin, urethane resin, isocyanate, etc. Used as

[0010] The adhesive may include inorganic powders such as talc, calcium carbonate, clay and titanium white, wheat flour, wood flour, plastic powder, metal powder, coloring agent, insect repellent, etc., if necessary.
A fungicide, an insect repellent, and the like can be added and mixed for use. A plurality of back grooves 4 for the substrate 1 are engraved on the back side of the substrate 1 on which the decorative materials 2 and 3 are stuck.

When veneers are adhered as decorative materials 2 and 3, the back grooves are preferably formed in a direction perpendicular to the fiber direction of the veneers. The groove width, groove depth, pitch, and number of the back grooves 4 can be arbitrarily selected and determined. However, by forming the back grooves, the back grooves 4 are bent in a direction parallel to the back grooves 4 and against a bending load from the front surface side. Young's modulus is 9000-25000kg / c
made to be m ^2.

The bending Young's modulus is from 9000 to 25000k.
By using g / cm ² , the rigidity of the floorboard is eliminated, the familiarity with the base materials such as concrete slabs, discarded plywood, etc. is improved, and non-absorbent absorption can be prevented. Done.

When the bending Young's modulus is less than 9000 kg / cm ² , the rigidity becomes too low and there is no stiffness, so that it is more easily broken than the back groove portion during handling during transportation and construction. On the other hand, if the flexural Young's modulus is 25,000 kg / cm ² or less, the rigidity is high and the base material is not well conformed, so that floating of the floorboard cannot be eliminated, and floor noise and creaking occur.

At the edge of the four-sided lug of the substrate to which the decorative material has been adhered, there is formed a real fruit, which is a male fruit and a female fruit, which fit the floorboards together. As described above, the bending Young's modulus is 9000
A floorboard of 25,000 kg / cm ² was obtained.

[0015]

The rigidity of the floorboard itself is cut into a back groove so that the bending Young's modulus against a bending load in a direction parallel to the back groove and from the surface side is 9000 to 25000 kg / cm.
^Since it is set to ² , while maintaining the strength as a floor plate, it adapts well to the floor substrate, absorbs uneven ground, and is not damaged during transportation or construction.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floor panel of the present invention,

[Explanation of symbols]

 1: substrate, 2, 3: decorative material, 4: back groove, 5: real.

Claims (1)

(57) [Claims] 1. A decorative material is stuck on the front and back surfaces of a substrate, and a plurality of back grooves reaching the substrate are cut on the back surface, and bending is performed in a direction parallel to the back grooves and against a bending load from the front surface side. A floorboard characterized by having a Young's modulus of 9000 to 25000 kg / cm ² and being provided with a fruit at the edge of the wood.