JP2002326204A - Sliced veneer decorative laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a cost down by enabling a sliced veneer decorative laminate to be used as a covering material, a floor board and the like of furniture to be manufactured even from soft wood of a low tree age at a low cost without decreasing physical properties of the surface. SOLUTION: Many sheets of a sheet-like wood are laminated by making respective axial directions (fiber directions) parallel to each other and integrated by bonding. When the laminate is compressed by pressurizing in a stacking direction, heated, cooled thereafter and fixed in a compressed and deformed state. The compressed and fixed laminate 10 is cut thin in the stacking direction by a cutting line 11 along the axial direction (the fiber direction) of the sheet- like wood to make a sliced veneer 12 wherein the cutting surface becomes front and rear both surfaces, and the sliced veneer 12 is stuck to a front surface 13a of a core material 13 to be integrated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a veneer veneer used as an exterior material or a floor material (flooring) of furniture.

[0002]

2. Description of the Related Art A veneer veneer used for furniture and the like is a veneer for enhancing a design effect such as a sense of quality and the like on a surface of a core material mainly serving as a strength member such as a plywood, a laminated wood, a particle board, and a fiber board. The veneer veneer of the prior art is a veneer with a high-density and hard wood such as oak, cherry blossoms, and various kinds of Karaki, and a ground board that is affixed and integrated on the surface of the core material. Was something.

[0003]

As described above, the veneer used for the conventional veneer decorative panel is not only expensive, but also requires a rare, large-leafed large-leaved tree for its production. It is also viewed as a problem from the perspective of protecting natural resources and the environment. Of course, it is possible to use veneers made of inexpensive wood such as cedar, pine, poplar, kenaf, and halkata. However, since these woods are generally low in density and soft, the mechanical contact strength of the surface is high. It is weak and easily damaged and cannot be used for flooring (flooring), etc., but also has significant unevenness when painted due to large variations in density due to annual rings. Also cannot be used.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a veneer veneer which can solve the above-mentioned conventional problems. When a large number of thin wood pieces (single boards 2) are laminated in parallel with their respective axial directions (fiber directions), they are bonded and integrated, and the laminate 3 is pressed in the stacking direction. The sheet is compressed and heated, then cooled and fixed in a compressed and deformed state. The compression-fixed laminate 10 is cut along a cutting line 1 along the axial direction (fiber direction) of the thin wood (single veneer 2).
1 is thinly cut in the stacking direction to form a veneer plate 12 whose cut surface is the front and back surfaces, and the veneer plate 12 is adhered and integrated on the surface 13 a of the core material 13.

[0005] In carrying out the present invention having the above-mentioned structure, specifically, a veneer 2 manufactured by peeling a wig of a raw wood is used as the thin wood, and a raw material is It is desirable to use soft wood such as cedar, poplar, and kenaf.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. First, as shown in FIG.
A soft wood log (including thinned wood) 1 such as cedar, poplar, kenaf, and harukata is wig-stripped (rotary peeled) to a thickness (radial direction) of about 2 to 5 mm, preferably about 3 mm (rotary peeling). Cut at an interval of ~ 300 mm in the axial direction C of the raw wood 1 (fiber direction, the same applies hereinafter), length (axial direction C of the raw wood 1) L = about 2000 mm, width (tangential direction of the raw wood 1) W = 150 to 300 mm, A veneer 2 having a thickness (radial direction of the log 1) t of about 3 mm is manufactured.

Next, as shown in FIG. 2, the veneer 2 is so arranged that its thickness L (Rt) is, for example, about 300 mm so that its length L direction (axial direction C of the log 1) is parallel. A required number of sheets are laminated and the overlapping surfaces are bonded to each other with an appropriate adhesive, for example, an aqueous vinyl adhesive, to be integrated, thereby producing a laminate 3.

Next, as shown in FIG. 3, the laminate 3 is set between a pair of pressurizing plates 4a and 4b also serving as a high-frequency heating plate, and the laminate 3 is formed by the two pressurizing plates 4a and 4b. Pressure is applied at a required pressure P in the laminating direction, and the thickness (Rt) in the laminating direction is compressed to about half, in the above example, to about 150 mm. Incidentally, by supplying the veneer 2 to both the pressurizing plates 4a and 4b, the manufacturing process of the laminated body 3 by laminating the veneer 2 can be performed between the pressurizing plates 4a and 4b.

Next, while the laminate 3 is pressurized between the pressurizing plates 4a and 4b, a high-frequency power supply 5 electrically connected to the pressurizing plates 4a and 4b connects the pressurizing plates 4a and 4b to each other. A required high-frequency voltage is applied, and the compression laminate 6 between the pressure plates 4a and 4b is high-frequency heated to a required temperature, for example, about 180 to 200 degrees Celsius. This high-frequency heating step may be temporally overlapped with the pressing and compressing step of the laminate 3 by the two pressing plates 4a and 4b.

When the high-frequency heating step for the compression laminate 6 is completed, the pressing plates 4 sandwiching the compression laminate 6
The compressed laminated body 6 is sent to the next cooling device 7 together with the compressed laminated body 6a and 4b, and forcibly cooled to about 70 to 90 degrees Celsius in the water cooling zone 8 and the air cooling zone 9, thereby compressing the compressed laminated body 6 Permanently fix in the deformed state. Thereafter, the pressurized plates 4a and 4b sent out from the cooling device 7 are opened to take out the compressed fixed laminate 10, and the compressed fixed laminate 10 completely cooled to room temperature is carried into the next slicing step.

In the slicing step, as shown in FIG.
The compression-fixed laminate 10 is moved along the cutting line 11 parallel to the length L direction of the veneer 2 (the axial direction C of the log 1).
Is cut in a required thickness unit, for example, in a unit of 0.5 mm in the laminating direction (the thickness t direction of the veneer 2).
A veneer plate 12a having both front and back surfaces 2a is manufactured. Then, in a decorative board manufacturing process shown in FIG. 4B, the protruding board 12 is attached to a surface 13a of a core material 13 mainly serving as a strength member, such as a plywood, a laminated wood, a particle board, or a fiber board, with an appropriate adhesive, and integrated. Thereby, the veneer decorative board 14 shown in FIG. 5 is manufactured.

It should be noted that the various numerical values exemplified in the description of the above embodiment are merely examples, and the present invention is not limited to these. In addition, the veneer 2 manufactured by peeling the wig from the raw wood 1 was used as the thin plate-like wood as a material for manufacturing the laminated body 3, but it is manufactured by another manufacturing method, for example, by cutting the raw wood 1 in the axial direction. A thin sawing board can also be used. Furthermore, it is preferable to use soft wood as the thin plate-like wood which is a material for manufacturing the laminated body 3, but it is not limited to soft wood.

[0013]

As is clear from the above description of the embodiments, the veneer used for the veneer veneer of the present invention is formed by laminating a large number of thin wood pieces with their respective axial directions (fiber directions) parallel. And pressurizing and compressing the laminate in the stacking direction, heating, and then cooling to fix the laminate in a compression-deformed state. Even if the body is made of inexpensive and soft cedar or poplar with a low age as its raw material, it has the same physical properties as high-density hard wood. The fixed laminate is cut thinly in the stacking direction along a cutting line along the axial direction (fiber direction) of the thin plate-like wood, and the cut surface is formed into a veneer having both front and back surfaces, and the veneer is integrally attached to the surface of the core material. To make veneer veneer Therefore, even if the material of the veneer is inexpensive and soft cedar or poplar as described above, the mechanical contact strength of the veneer surface is high and it is hard to be damaged, and the veneer decorative material can be used for flooring (flooring) and the like. It can be effectively used in place of a veneer, in other words, a veneer veneer to which a veneer made of conventional oak, cherry blossom, or other high-grade hard wood is attached.

[0014] In addition, each of the thin plate-like lumbers constituting the compression-fixed laminate has a change in color due to a chemical change of the sap due to a compressibility at the time of compressive deformation or heating due to a variation in density or sap amount caused by annual rings or the like. Etc. are not constant, whereby the cut surface of the compression-fixed laminate, that is, the surface of the veneer,
Fine striped patterns along the axial direction appear irregularly, and can be used as decorative boards with high-grade, straight-grained wood patterns on the surface. Of course, even when the surface is coated, the surface structure is dense and hard, so that there is little occurrence of uneven coating, and it can be used for applications requiring coating.

According to the second aspect of the present invention, the yield of raw wood is higher and the lumbering cost is lower than in the case where a sawn board is used as the thin wood as the material of the compression-fixed laminate. Significant cost reduction can be achieved as a veneer decorative board.

According to the third aspect of the present invention, thinned cedar and the like are utilized as compared with a case where a rare, large-leafed, large-leaved tree must be used in the manufacture of veneer as in the past. As a result, not only can manufacturing costs be reduced, but also effects can be obtained in terms of global resource protection and environmental protection.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining a manufacturing process of a thin wood piece (a single board).

FIG. 2 is a perspective view illustrating a manufacturing process of a laminate.

FIG. 3 is a side view illustrating a manufacturing process of the compression-fixed laminate.

FIG. 4A is a perspective view illustrating a manufacturing process of a veneer, and FIG. 4B is a perspective view illustrating a manufacturing process of a veneer decorative plate.

FIG. 5 is a perspective view showing a veneer decorative board manufactured according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Log 2 Veneer (laminate wood) 3 Laminated body 4a, 4b A pair of high-frequency heating boards Compression board 5 High-frequency power supply 6 Compression laminated body 7 Cooling device 8 Water cooling zone 9 Air cooling zone 10 Compression fixed laminated body 11 Cutting line parallel to length L direction (axial direction C of raw wood) 12 Veneer 13 Core material 14 Veneer veneer

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2B002 AA12 BA01 BB08 DA01 DA04 2B250 AA05 AA13 BA03 BA05 CA11 DA04 EA02 EA13 FA21 FA28 FA31 FA37 4F100 AP00A AP00B AP01A AP01B BA11 BA23 EJ17 EJ31 EJ42 GB08 GB81 HB01JK12

Claims (3)

[Claims] 1. A plurality of thin wood pieces are laminated and bonded together with their respective axial directions (fiber directions) parallel to each other, and the laminated body is pressed and compressed in a stacking direction, heated, and then cooled. And fixed in a compression-deformed state, and the compression-fixed laminate is cut thinly in the stacking direction along a cutting line along the axial direction (fiber direction) of the thin plate-like wood, and the cut surface is a veneer having both front and back surfaces, This veneer is a veneer decorative plate that is formed by sticking and integrating this veneer on the surface of a core material. 2. The veneer veneer according to claim 1, wherein said thin plate-like wood is manufactured by peeling a wig of raw wood. 3. The veneer veneer according to claim 1, wherein said thin plate-like wood is made of soft wood such as cedar, poplar, and kenaf.