JPH0328104Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the improvement of building materials used as construction materials (for example, face plates, floor plates, scaffolding boards), refrigerator room wall materials, lid plates, etc.

This kind of board material is a building material that has a synthetic resin outer covering formed around the core board to make it look beautiful, but synthetic resin end members are integrally attached to the ends to protect the edges. Therefore, conventional plates of this type have a problem in that the ends are easily damaged when an impact is applied to the ends due to, for example, falling from the ends. In addition, in conventional products, the bond between the core plate and the synthetic resin outer skin is not sufficient, and the synthetic resin outer skin is more likely to peel off than the core plate due to differences in expansion and contraction due to differences in thermal expansion coefficients and aging of the synthetic resin. There was a problem that it could not withstand long-term use. Furthermore, when a bending moment is applied to conventional plate materials, there is a problem in that slippage occurs between the synthetic resin outer skin and the core plate, creating a gap and reducing bending rigidity. Furthermore, when the conventional technique is cut with a saw or the like, the synthetic resin outer skin and the core plate open around the cut portion to form an opening, and there is a problem in that foreign matter can enter through the opening.

The present invention aims to solve the above-mentioned problems, and as shown in an embodiment in the drawings, the side circumferential surface 2 is formed on both end surfaces 6, 6 of a core material 1 formed to have an uneven surface 9. Synthetic resin end members 8, 8 are attached to cover the respective end surfaces 6, 6, and a synthetic resin outer skin 3 is attached to the side circumferential surface 2 of the core material 1 and the synthetic resin end members 8, 8.
The inner surface of the synthetic resin outer skin 3 is bitten into the concave portions of the uneven surface 9 of the core material 1, and the synthetic resin end members 8, 8 and the synthetic resin outer skin 3 are fused together. The present invention is characterized in that the core material 1, the synthetic resin end members 8, 8, and the synthetic resin outer skin 3 are integrated.

Embodiments of the plate material of the present invention will be described below based on the drawings. FIG. 1 is a perspective view including a partially cutaway cross section showing one embodiment of the present invention, and FIG. 2 is a partially longitudinal side view showing another embodiment of the present invention.
In the embodiment shown in FIG. 1, plywood is used as the core material 1, and a large number of parallel protrusions 4, 4, extending in the longitudinal direction and having a triangular cross section are provided on the side peripheral surface 2 of the core material 1.
While forming an uneven surface 9 on the side peripheral surface 2, the first
Although not shown in the figure, synthetic resin end members 8, 8 covering the respective end surfaces 6, 6 are attached to both end surfaces as in FIG. A synthetic resin outer skin 3 is formed to cover the side peripheral surfaces 2 of the members 8, 8, and the inner surfaces of the synthetic resin outer skin 3 are bitten into the recesses of the uneven surface 9 of the core material 1, and the synthetic resin end members 8, 8 are formed. The core material 1, the synthetic resin end members 8, 8, and the synthetic resin outer skin 3 are integrated by fusing them together.

Incidentally, if plywood whose surface is roughened at the time of formation is used as the core material 1, it is possible to obtain the core material 1 whose peripheral surface 2 has an uneven surface 9 without any special surface treatment. suitable.

Another embodiment of the present invention shown in FIG. 2 uses a veneer as the core material 1, and has a large number of circumferential protrusions 5, 5 having a rectangular cross section and spaced apart from each other at regular intervals on the four side circumferential surfaces 2 of the veneer.
. . . and form an uneven surface 9 on the four side circumferential surfaces 2, and temporarily attach synthetic resin end members 8, 8 to both end surfaces 6, 6 of the core material 1 by using their U-shaped cross sections. These synthetic resin end members 8, 8 are integrally connected to the inner surface of the synthetic resin outer skin 3. Note that if the end members 8, 8 are made of the same synthetic resin as the synthetic resin outer skin 3, the synthetic resin outer skin 3 and the end members 8, 8 will be melted and integrated during extrusion molding of the synthetic resin outer skin 3, and the bond between the two will be strengthened. be done. The end member 8 may be any of those shown in FIGS. 3 and 4, respectively.

In the building materials of the above-mentioned embodiments of the present invention, both ends of the core material 1 are protected by synthetic resin end members 8, 8.
Even if the plate material falls from the end during transportation, the end members 8, 8 act as a cushion to absorb and alleviate the impact force, thereby avoiding damage to the core material 1. Since the member 8 and the synthetic resin outer skin 3 are fused together, the synthetic resin outer skin 3 will not separate from the synthetic resin end member 8 and the core material 1, so the core will not be damaged by water etc. entering from the end surface 6 or elsewhere. Corrosion of material 1 can be prevented.

The present invention can be configured in various ways other than those shown in the above embodiments. For example, in the above embodiment, all of the four side circumferential surfaces 2 of the core plate 1 are formed with uneven surfaces 9, but the present invention is not limited to this, and for example, only the top and bottom two surfaces of the four side circumferential surfaces 2 are formed with uneven surfaces 9. may be formed. Further, the shape of the uneven surface 9 of the circumferential surface 2 is not limited to that of the above embodiment, and can be freely selected such as a lattice shape or a wavy shape. Further, the shape, material, etc. of the core plate 1 are not limited to those shown in the above embodiments, and may be, for example, in the shape of a rectangular member such as a square cross section. Furthermore, it goes without saying that the outer peripheral surface of the synthetic resin outer skin 3 can be printed or embossed with a pattern or the like in accordance with the intended use of the building material.

Since the present invention has the above-mentioned configuration, it can not only have the effect of making the appearance beautiful like the conventional synthetic resin-coated plate material, but also can have the following special effects.

Synthetic resin end members are attached to both end faces of the core material to cover the respective end faces, and the synthetic resin end members are fused to the synthetic resin outer skin, so that it can be easily used during transportation or
Even if an impact is applied to the end part due to a building material falling from the end part during use as a scaffolding board, etc., the end member acts as a cushion to absorb and soften the impact, and the core material 1 Damage can be avoided, and since the synthetic resin outer skin 3 does not separate from the synthetic resin end member 8 and the core material 1, it is possible to prevent corrosion of the core material due to intrusion of water etc. from the end surface and other parts. can.

A synthetic resin outer skin is formed to cover the peripheral surface of the core material formed to have an uneven surface, and the inner surface of the synthetic resin outer skin is bitten into the recessed part of the core material surface, thereby forming a bond between the core material and the synthetic resin outer skin. This makes it possible to strengthen the integral bond between the core material and the synthetic resin outer skin, which prevents it from peeling off from the core material even if it is affected by expansion/contraction differences due to differences in thermal expansion coefficients or aging of the synthetic resin. can be improved.

Even when a bending moment is applied from the outside, the bond between the core material and the synthetic resin outer skin is strong, and the uneven surface prevents slippage between the core material and the synthetic resin outer skin. The material and the synthetic resin outer skin bend uniformly and integrally, and as a result of both working together to resist bending moments, bending rigidity can be improved.

As mentioned above, since the bond between the core material and the synthetic resin outer shell is strong, even if the building material of the present invention is cut according to the intended use, the synthetic resin outer shell around the cut part will separate from the core material and form an open shape. This prevents foreign matter from entering through the opening.

[Brief explanation of the drawing]

FIG. 1 is a perspective view including a partially cutaway cross section showing one embodiment of the present invention, FIG. 2 is a partially longitudinal side view showing another embodiment of the present invention, and FIGS. 3 and 4 are respectively It is a perspective view of an end member. DESCRIPTION OF SYMBOLS 1...Core material, 2...Side peripheral surface, 3...Synthetic resin outer skin, 6...End surface, 8...Synthetic resin end member, 9...
...uneven surface.

Claims (1)

[Scope of utility model registration request] Synthetic resin end members covering the respective end faces are attached to both end faces of a core material formed to have an uneven side peripheral surface, and synthetic resin is attached to the side peripheral surfaces of the core material and the synthetic resin end member. Forming a cover with an outer skin, digging the inner surface of the synthetic resin outer skin into the concave portions of the uneven surface of the core material, and fusing the synthetic resin end member and the synthetic resin outer skin to bond the core material and the outer skin. A building material characterized in that the synthetic resin end member and the synthetic resin outer skin are integrated.