JPH04297654A - Panel-shaped floor material - Google Patents

Abstract

PURPOSE:To obtain floor material excellent in water resistance without the generation of deflection, for enabling it to be laid without the need of skill. CONSTITUTION:A plywood 1 for base material is placed between two external plates 1a, 1b arranged while matching the fiber directions, and an intermediate plate 1c thinner than the gap between the external plates 1a, 1b is sandwiched between the fiber directions crossing orthogonally to those of the external plates 1a, 1b, and then they are stuck to each other. Then, excellent flexibility is obtained. On bending working, they are lined with oscillation-suppressing mat material 3 to be fitted on them. On the surface subjected to bending work, a facing venner 2 is fitted with the fiber direction to be set orthogonally to the external plates. Then the flexibility is retained. The notched depth of the upper side section of a projected type protruded section 4 is made smaller than the depth of the lower side section. As a result, the execution of work is facilitated, and water resistance is obtained.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel-shaped flooring material that can be laid without using adhesives, nails, or the like by simply laying it down while actually splicing it.

0002

[Prior Art] Common types of flooring include flooring with carpets, etc., adhesive floors that are pasted onto concrete or board-finished floors, or floors that are nailed to joists. There are things to do. Carpets and rugs are excellent in terms of decoration, safety, moisture retention, and sound absorption, but they can cause problems such as pets eating hairballs, pests such as dust mites, and atopic dermatitis. There are problems such as causes. Therefore, in recent years, wood-based flooring materials, which have advantages such as unique color tone, good livability, elasticity, and a combination of beauty and texture, have been reconsidered. This wood-based flooring material is generally in the form of a panel or board as shown in FIG. 5. This wood-based flooring material 20 has a decorative board 22 made of oak or the like attached to the surface of plywood 21 as a base material, and has a rectangular panel shape as a whole. The two opposing sides have a convex real portion 23 projecting like a rail, and a convex real portion 23 that protrudes like a rail.
A concave real portion 24 is formed in the shape of a groove into which the concave portion 24 is fitted.

[0003] During construction, the base is treated to make the installation surface smooth to prevent wobbling, and this smooth surface is waterproofed or cushioned material is installed. As shown in FIG.
4. While performing the actual splicing to fit into 4, attach the back side directly to the concrete base or mortar base with adhesive or nail it.

0004

[Problems to be Solved by the Invention] However, the above-mentioned flooring materials have the following various drawbacks. That is, construction requires considerable skill, but carpenters are not good at using adhesives, while tile manufacturers are not good at using nails, and there is a shortage of specialized construction workers. Furthermore, since the plate 22 is bonded to the surface of the plywood 21, warping as shown by the solid line or the dashed-dotted line in FIG. 7 occurs due to the difference in the strength direction and the difference in the elongation rate and contraction rate. here,
The so-called positive warping, in which the central portion warps upward, as shown by the one-dot chain line, does not pose much of a problem because it can be prevented by placing furniture or the like. However, in the case of the above-mentioned flooring material 20, there is a difference in the coefficient of expansion between the plywood 21 and the plywood 22, and the plywood 21
absorbs moisture and expands, causing so-called negative warping in which both sides curve upward, as shown by the solid line, and the flooring material 20
This results in the inconvenience that the seam portion of the sheet protrudes. Therefore, it is conceivable to absorb the warp by applying grooves, etc., but this would result in a considerable increase in cost and would be impractical.

Furthermore, due to insufficient flexibility and the fact that the lateral lengths of the real parts 23 and 24 cannot be made smaller for the purpose of preventing wobbling, gaps are formed between the flooring materials 20. Easy to occur. Therefore, there is a drawback that water resistance against water leakage from above is low and pests such as mites cannot be prevented from coming from below. If the gap is to be made as small as possible, high dimensional accuracy is required, resulting in a considerable increase in cost. Furthermore, it is difficult to perform surface treatment to create a smooth surface, and it takes many days to peel off the adhesive layer when replacing the adhesive layer. Furthermore, when installing the wood-based flooring material 20 on a floor, it is often difficult to fit the convex portion 23 of the adjacent flooring material 20 from diagonally above into the concave portion 24 of the already installed flooring material 20. Although it depends on the construction location of the flooring material 20, in most cases, the width and length of the convex portion 23 are different from each other.
This is because if the amount is set to the amount necessary to obtain sufficient strength of 0, it will be difficult to fit. Therefore, in reality, the work is to place the flooring material 20 that has been fitted over the required area in advance on the flooring base, which does not contribute much to the simplicity of the work.

[0006] Therefore, the present invention aims to provide a panel-shaped flooring material that can be easily constructed without requiring any skill, has an inexpensive structure, suppresses warping and gaps as much as possible, and has excellent airtightness. This is a major issue.

[0007]

[Means for Solving the Problems] In the present invention, as a technical means for achieving the above-mentioned problems, a panel-shaped flooring material is constructed as follows. In other words, the base plywood consists of two wooden outer panels with the same fiber direction, and a wooden intermediate panel that is thinner than these outer panels and is arranged between the outer panels with the fiber direction orthogonal to them. A damping mat material is attached to the plywood as a lining, and a decorative wooden veneer is attached to the surface of the plywood so that the fiber direction is perpendicular to the outer panel. The entire outer shape is formed into a rectangular panel shape, and a convex real part and a concave real part having a shape to fit therein are formed on two opposing sides of the rectangle, respectively, using plywood and a damping mat material, and the convex part The lower part of the concave part is deeply cut out from the upper part, and the lower part of the concave part protrudes from the upper part.

[0008]

[Operation] When this panel-shaped flooring material is laid by fitting the convex fruit part into the concave fruit part and joining each other, the plywood serving as the base material is made of two sheets with the same fiber direction. It has a structure in which a thinner intermediate plate is sandwiched and attached between the outer panels, with the fiber direction perpendicular to the outer panels, and is extremely flexible. Since the base material is easily processed, there is no need to use adhesive, etc., and the notch on the upper side of the convex part is small, making it easy to fit the flooring materials together. It can be constructed.

In addition, plywood is highly flexible and is less likely to warp, and since the decorative veneer is attached to the surface of the plywood with the fiber direction perpendicular to the outer panel of the plywood, the warp will not occur in the center. Only a positive warpage occurs in which the portion warps upward. Furthermore, since the notch depth at the lower side of the convex fruit part is large, the contact area between the lower surface of the convex fruit part and the lower surface of the concave fruit part is large, and the airtightness is good, resulting in excellent water resistance. It can prevent pests from passing from below. Furthermore, since plywood is highly flexible and bends easily, the gap can be made smaller without requiring sophisticated manufacturing technology.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail below with reference to the drawings. "FIG. 1" is a cutaway perspective view of one embodiment of the present invention, and "FIG. 2" is an exploded perspective view thereof. In these figures, a plywood 1 serving as a base material has an intermediate plate 1c, which is about half as thick as the outer panels 1a and 1b, between two wooden outer panels 1a and 1b with the same fiber direction.
are sandwiched between outer panels 1a and 1b with their fiber directions perpendicular to each other, and then bonded together. For example, lauan material is used as the material, the total thickness is about 4.0 mm, and the adhesive is adjusted so that flexibility is not lost. On the surface of this plywood 1, a decorative veneer 2 of natural wood oak with a thickness of about 1.0 mm is pasted with the fiber direction perpendicular to the outer panels 1a and 1b, thereby providing flexibility. I have it. In addition, on the back side of plywood 1, 50% recycled vinyl, 50% calcium carbonate, and 3 to 30% plasticizer were added.
A damping mat material 3 made of a material containing 5% additive and having a thickness of about 4.0 mm is attached.

The vibration damping mat material 3, plywood 1, and decorative veneer 2 that are laminated and pasted have a rectangular overall outer shape, and a convex real part 4 and a convex part fitted thereto are provided on two opposing sides of the rectangle. The concave real portion 5 is actually processed. The lower part of the convex fruit part 4 has a larger notch depth than the upper part, and the concave fruit part 5
has a shape that complements the convex real portion 4.

[0012] When laying this flooring material, by using a tacker or spray glue on the back side, or double-sided tape on the back side or the laying surface, it can be laid on the laying surface without using adhesives or nails. Just glue it completely. Moreover, the plywood 1 is highly flexible and bends easily, and the notch depth on the upper side of the convex real part 4 is small.
As shown in Figure 4, the workability of mutual fitting is good, and construction can be performed without any skill. In particular, as is clear from FIG. 4, the work of adhering to walls is facilitated. Further, since the plywood 1 is highly flexible and the decorative veneer 2 is adhered to the plywood 1 so as to have flexibility, almost no warpage occurs. As shown in Figure 3, which shows the installed state, the contact area between the lower surface of the convex fruit part 4 and the protruding upper surface of the concave fruit part 5 is large, so it has excellent water resistance and ensures that pests cannot pass from below. can be prevented. Since the plywood 1 is highly flexible, the gap can be made as small as possible with an inexpensive configuration that does not require sophisticated manufacturing technology.

[0013] Incidentally, to show the experimental results, a bending test was conducted under the bending conditions of a centrally concentrated load and a deformation rate of 30 mm/min using a sample of the flooring material according to the present invention prepared as a test piece with a span of 30 cm. The result was 7.26 mm when the load was 5 kg, and 14.24 mm when the load was 10 kg. A test piece with a span of 30 cm was adjusted using (A) an existing simple flooring material shown in Figure 5, (B) a single-layer directly pasted flooring material, and (C) a flooring material for general residential joists.
kg (A) 12.27mm, (B) 1.47mm, (
C) At 0.42 mm, it was demonstrated that the flooring according to the invention has extremely good flexibility.

[0014]

[Effects of the Invention] As described above, according to the panel-shaped flooring material of the present invention, the plywood serving as the base material has excellent flexibility, and the plywood is lined with a damping mat material and is pasted, and the surface of the plywood is coated with a decorative material. The veneer is attached in a direction that does not lose its flexibility, and the depth of the notch is smaller on the upper side of the convex part than on the lower side, so it can be installed in a short time without requiring any skill. In addition, it hardly warps, has excellent water resistance, can reliably prevent pests from passing through, can be manufactured at low cost, and has extremely high practical effects.

[Brief explanation of drawings]

FIG. 1 is a cutaway perspective view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a portion thereof.

FIG. 3 is a side view of it after construction.

FIG. 4 is a side view showing the construction state thereof.

FIG. 5 is a perspective view of a conventional flooring material.

FIG. 6 is a side view of it after construction.

FIG. 7 is an explanatory diagram showing the occurrence of warpage.

[Explanation of symbols]

1 Plywood 1a, 1b Outer panel 1c Intermediate plate 2 Decorative veneer 3. Vibration damping mat material 4 Convex real part 5 Concave real part

Claims (1)

[Claims] Claim 1: Two pieces of plywood whose fibers are arranged in the same direction as the base material.
This plywood is made by pasting together at least three boards: a wooden outer board and a wood intermediate board that is thinner than the outer board and arranged between the two outer boards with the fiber direction perpendicular to them. A damping mat material is attached to the backing of the plywood, and a decorative wood veneer is attached to the surface of the plywood so that the fiber direction is perpendicular to the outer panel, so that the overall external shape is formed into a rectangular panel shape. A convex real part and a concave real part having a shape that fits into the convex real part are respectively formed on two opposing sides by plywood and vibration damping mat material,
A panel-shaped flooring material characterized in that the lower side of the convex fruit portion is deeply cut out from the upper side, and the lower side of the concave fruit portion projects from the upper side.