JP2002011708A - Surface-reinforced building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface-reinforced building material capable of surely decreasing generation of breakage of contents due to nailing without using specially structured contents wherein a yield is decreased. SOLUTION: The surface-reinforced building material is provided wherein in a section of a floor material, a central part where contents are positioned is strand board layer wherein many sheets of thinly shaved veneers are laminated, front and rear faces or the front face of the strand board layer are a hard fiberboard layer, and facing is suitably applied to a board like body wherein the strand board is integrated with the hard fiberboard layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface-reinforced building material used for houses, educational facilities and the like.

[0002]

2. Description of the Related Art Conventionally, floor materials which are one of building materials include:
A single-layer flooring 1 shown in FIG. 5 or a plywood 2 shown in FIG. 6 in which odd-numbered veneers are alternately laminated have been used. In the case of plywood, the thickness of the veneers 3, 4,..., 7 is limited to at most about 1 mm for reasons of productivity. But at most 3
Only about one sheet was located.

[0003] On the other hand, when constructing a floor structure of a house or educational facility, it is common practice to nail the floor material with a nail to fix and integrate it with the base material of the floor material and to carry out the construction by the joist method. is there.

[0004] As shown in FIG. 4, when the longitudinal joints of the floor materials 8 and 9 are smashed on one joist 10, the joist 1
Since the width of 0 is usually only about 45 mm, even if one nail is hit on each floor material, the convexities 8a, 9
a had to be struck close to the edge of a within about 20 millimeters.

[0005]

However, in the case of the conventional single-layered flooring, as shown in FIG. 5, since the portion of the convex 1a is a single layer, it has a drawback that it is extremely fragile during nailing. there were.

[0006] In the plywood shown in Fig. 6, each veneer is thick, and when the veneer is manufactured by a rotary lace, many back cracks are generated. In addition, the cracks are spread by driving a nail. Therefore, there is a disadvantage that the protrusion 2a is easily cracked. In addition, in the plywood, only about three veneers are located in the actual part, so when one is chipped or broken, the strength of that part becomes extremely weak. There is a disadvantage that cracks are easily generated.

[0007] For this reason, the shape of the actual body itself has been improved, and FIG.
As shown in (2), the lower part of the convex 2a is made to protrude in the form of a jig, so that the thickness of the veneer is increased at the portion where the nail is driven, and resistance to the spread of cracks caused by driving of the nail is improved. In some cases, however, the lower part of the concave 2b had to have a structure that receded in accordance with this, and there was a drawback that the actual shape was enlarged and the yield was greatly reduced. .

Therefore, the present invention has been conceived to eliminate the above-mentioned disadvantages, and reliably reduces the occurrence of cracks in nails due to nailing without using a special structure having a reduced yield. It is an object of the present invention to provide a surface-reinforced building material that can be used.

[0009]

The floor material, which is one of the building materials of the present invention, has a cross section of the floor material, and the center portion where the floor material is actually located is a strand board layer in which a number of thinly cut veneers are laminated. The front and back or the front surface of the strand board layer is a hard fiber board layer (hard board), and a plate-like body (hereinafter, referred to as a “hard board”) in which the strand board layer and the hard fiber board layer are integrated.
Triwood) is appropriately decorated.

[0010]

The triwood constructed as described above is cut in the same manner as ordinary plywood to form a fruit. The flooring material obtained in this way is constructed by the joist method in the same manner as ordinary plywood. At this time, in the process of fixing and integrating with the joist, which is the base material, by nailing in a convex shape, the thickness of the veneer in the convex portion is thin and many are laminated, and about one of them is broken, Even if there is a defect such as chipping or death, the strength of the portion does not significantly decrease, and since the fiber direction of the veneer is not unitary, the veneer resists pushing and spreading by nail driving.

The hard fiberboard layers provided on the front and back surfaces or the front surface are excellent in the smoothness and stability of the front and back surfaces or the front surface, and have high strength and keep extremely good.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a hard fiber board is provided so as not to cover the convex portions 11 a on the front and back surfaces of the strand board layer 11 having a structure in which a plurality of veneers cut to a thickness of approximately 0.6 mm or less are laminated. Specific gravity 0.8 with layer 12 arranged
The above-mentioned triwood 13 is cut in the same manner as ordinary plywood to form a fruit to form a floor material.

In this embodiment, a plurality of veneers are laminated to form a strand board layer.
As shown in FIG. 3, the fiber directions of the veneers 11n, 11n,.

Further, the single board 11n of the strand board layer
Are cut to a thickness of about 0.6 mm or less, and about 5 to 6 to 20 pieces are located in the convex real part.

Further, the tri-wood 13 of this embodiment is:
If the specific gravity is less than 0.5, the floor material may be insufficient in strength. Therefore, the specific gravity required for a general joist method floor material is about 0.7 to 0.8.

According to the above construction, the present embodiment has a uniform strength, the strength of a part is not remarkably reduced, the generation of a back crack is very small at the time of manufacturing a veneer by a rotary lace, and a nail is formed on the convex 11a. Can be formed, a very tough fruit can be formed, which resists the spread by the nail, and the occurrence of cracks in the protrusion 11a can be extremely reduced.

Further, since the hard fiberboard layer 12 is completely integrated on the front and back surfaces or the front surface of the strand board layer 11, the floor material has high strength and excellent surface smoothness.

As shown in FIG. 2, a floor material having a hard fiber board 12 provided only on the surface of the strand board layer 11 may be used.

The surface reinforced flooring material of the present embodiment constructed as described above is appropriately decorated, and this makeup means that a veneer is applied to the front and back surfaces or the surface of the flooring material by painting. Or applying a sheet such as paper or PVC, or applying a process such as direct printing.

As a second embodiment, when forming the strand board layer, the method of stacking the veneers is generally in one direction.
Provided are single veneers which are superposed at various angles within a range of 20 degrees to 30 degrees with the fiber direction shifted.

In the case of this embodiment, without intentionally shifting the fiber direction of each veneer by about 20 ° to 30 °, it is only attempted to overlap the veneers in one direction. The deviation is considered as an error, and the lamination does not take much trouble and is easy to form. Moreover, since a strand board in which the fiber directions are considerably interlaced can be formed, a material not so inferior to the first embodiment can be expected.

As a third embodiment, there is provided an embodiment in which a plurality of layers are combined to form a strand board layer when the strand board layer is formed. Each of the plurality of layers is formed in a layer in which the fiber directions of the veneers are shifted from each other at various angles within a range of 20 ° to 30 ° while being substantially in one direction. These layers are combined so that their fiber directions are substantially orthogonal to each other to form the entire strand board layer.

In this embodiment, a plywood-like structure is considered. However, since the structure is formed by laminating thin veneers, a material having almost the same strength as or higher than that of the first embodiment is expected. it can.

In each of the first, second and third embodiments, the strand board layer 11 and the hard fiberboard layer 12 are made of a relatively low-quality raw material, such as radiata pine, which grows quickly and is easy to plant.
It can be used easily and with good yield, and there is no need to use rain forest materials such as Lauan. The reason for this is that since the laminate is formed by laminating thin veneers, it is possible to produce a floor material that is uniform in strength and excellent.

Since the surface-reinforced building material of the present invention can be formed to a thickness of 12 mm, it can be applied to other real building materials such as ceilings, walls, and various panels.

[0026]

According to the present invention, the actual shape of the floor material, which is one of the building materials, does not have to be a special shape which leads to a decrease in yield, and the occurrence of cracks due to actual nailing can be performed in the same shape as in the past. It can be reduced, productivity and workability can be improved, and an extremely beneficial effect can be achieved that can prevent occurrence of trouble after construction.

Further, since the thickness of each veneer of the strand board layer is approximately 0.6 mm or less, depending on the type of tree, the veneer is supposed to be flexible and difficult to break easily, depending on the type of tree. By the way, when the thickness is about 1.0 mm or more, the waist becomes strong and becomes brittle like a “crack”.

Further, each veneer of the strand board layer is
It is in the form of chips, and is arranged by being dropped on a mat after being blown by air. Therefore, some deviations and gaps also occur, but from experience, it is about 12 mm thick when used for flooring. If the thickness of the veneer is less than about 0.6 mm, the veneer will be finished almost uniformly by pressing, and the gap will only stop the trace in a pinhole shape. Absent.

Furthermore, according to the present invention, the surface reinforced flooring is appropriately decorated, but the hard fiberboard is hardly damaged and hardly absorbs water, and therefore does not swell, so It is extremely useful when applying veneer and painting, paper, or applying a sheet such as PVC, or when performing processing such as direct printing. It has useful effects such as being practicable.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view in the width direction of a single building material showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view in the width direction of a single building material showing an example in which a hard fiberboard layer is provided only on the surface of one embodiment of the present invention.

FIG. 3 is an explanatory view showing how the single plates forming the strand board layers of the first embodiment of the present invention overlap.

FIG. 4 is a plan view showing a nail driving position when a seam of a floor material comes on a joist.

FIG. 5 is a cross-sectional view in the width direction of a single floor material of a conventional single-layer flooring.

FIG. 6 is a cross-sectional view in the width direction of a single floor material made of a conventional plywood substrate.

FIG. 7 is a cross-sectional view in the width direction of a single floor material made of a plywood having a crack-preventing structure in which a lower portion of a conventional convex is projected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Single-layer flooring 1a Convex real 1b Concave real 2 Plywood 2a Convex real 2b Concave real 3 Plywood surface material 4 Plywood cross layer 5 Plywood core material 6 Plywood cross layer 7 Plywood back material 8 Floor material 8a Convex real 9 floor Material 9a convexity 10 joist 11 strand board layer 11a convexity 11b concaveness 11n veneer 12 hard fiberboard layer 13 tri-wood 14 nail

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04F 15/04 601 E04F 15/04 601Z F term (Reference) 2B200 AA01 BA01 BB06 CA01 CA12 DA04 EA06 ED11 FA24 2B250 AA01 AA05 AA06 BA05 CA11 DA04 EA02 EA13 EA18 FA21 FA31 FA33 GA05 2E162 CC08 EA00 EA11 FC02 FC03 4F100 AP01A BA03 BA06 BA10B BA10C BA11A BA22 DG01B DG01C GB07 JA13 JK12B JK12C YY00

Claims (6)

[Claims] In a cross section of a flooring material, a center portion where a real position is located is a strand board layer in which a number of thinly cut veneers are laminated, and the front and back surfaces or the front surface of the strand board layer is a hard fiberboard layer, A surface-reinforced building material obtained by appropriately applying a decoration to a plate-like body in which the above-mentioned strand board layer and the hard fiber board layer are integrated. 2. The thickness of each veneer of the strand board layer,
The surface-reinforced building material according to claim 1, wherein the surface-reinforced building material is approximately 0.6 mm or less, and the specific gravity of the plate-like body is 0.5 or more. 3. The surface-reinforced building material according to claim 1, wherein the strand board layer has a structure in which the direction in which the fibers of each veneer are arranged is randomly changed and laminated. 4. The surface-reinforced building material according to claim 1, wherein the strand board layer has a structure in which the direction in which the fibers of each veneer are arranged is changed at various angles within a range of 20 ° to 30 °. . 5. A strand board layer comprising a plurality of layers in which the direction in which the fibers of each veneer are arranged is changed at various angles within a range of 20 ° to 30 °, and the plurality of layers are laminated in substantially one direction. 3. The surface-reinforced building material according to claim 1, wherein the surface-reinforced building material has a structure in which the layers are arranged so that directions in which they are arranged are substantially orthogonal to each other. 6. In the cross section of the flooring material, the central part where the actual position is located is a strand board layer formed by laminating a large number of thinly cut veneers, and the front and back surfaces or the front surface of the strand board layer is a hard fiber board layer; A surface-reinforced building material obtained by appropriately applying a decoration to a plate-like body in which the above-mentioned strand board layer and the hard fiber board layer are integrated.