JPS6056504A - Manufacture of bonded wood - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a laminated board, and more particularly, the present invention relates to a method for manufacturing a laminated board, and more particularly, by configuring a device so that the laminated surfaces appearing on the laminated board are on the same plane in order to avoid warping or twisting. The present invention relates to a method of manufacturing a laminated board.

Traditionally, tabletops used for table tops, counters, etc. are made of spiders, beech, etc. li -, -, -4, 4 were used, but these single materials were expensive and not worth the cost, and were prone to warping, twisting, and other defects after long-term use. was. For this reason, top plates made of laminated wood were often used because they were cheap and had less warping. However, even with a top board made of this laminated wood, if the width of the board is over 1:10, and the ratio of thickness to width exceeds 1:10, repeated drying and wetting will result in distortions such as warping and twisting. Was.

Therefore, the present invention provides a method for manufacturing a stacked board by forming the laminated surfaces of the laminated boards so that they are not located on the same plane as each other. teeth,
Even if drying and wetting are repeated, the 111Y tension deformation due to wetness 1174 and the shrinkage deformation due to drying are dispersed and no distortion occurs. That is, the objective is to provide a wide board with less expansion/contraction cracking, etc., when compared with the conventional wide board IIi made from laminated sides.

Each step of the manufacturing method of the present invention will be explained in detail below based on the drawings.

FIG. 1 is a partially omitted perspective view of a milling mill 1 constructed by cutting raw wood such as spiderwood or beech into a predetermined size by cutting 19j.

This sawn board 1 is obtained by cutting an original board whose moisture content has been adjusted by natural or artificial drying to a moisture content of about 8 to 71515%, and cutting it into a constant j1/width by sawing or planing.

7 (The thickness of the third plate in the example is 2n1.■j 3S+
'～・120mm9. Iy: It is configured in a long shape with a diameter of about 2000 mm.

For these 4jQl, the middle use plane is the lamination surface 11,
Hiki 4 and 1. ]... Apply an adhesive such as urea resin adhesive or urea melamine resin adhesive between the laminated surfaces 11, 11...! +i l,, each laminated surface! , l , I I...
They are piled up and pressed together using a clamping device and cured for a certain period of time.

[This first production] 1.1...t.
A JA layer material 2 as shown in FIG. 152 is constructed. This laminated material 2 is composed of laminated boards 1.1...l/)
Width 80-120mm, length 20001. The height is a vertical flat plate whose height is a multiple of 20IIIn depending on the number of layers of the milled board 1 (r) Ja, and the long side surface 21 and the 1σ side surface 22
This is the right thing to do.

Further, on each outer surface of the long side surface 21 and the short side surface 22 of this laminated material 2, there are laminated plates 1.1...mutual laminated surfaces II, II...
is appearing. This laminated material 2 is
... and parallel to the long side surface 21. That is, by sawing in the longitudinal direction as shown by the dotted line, a JJ''J layer 3 having a predetermined width of 5 to 30 mm is manufactured. This is the second manufacturing process.

FIG. 3 is a partially omitted perspective view of the laminate 3 manufactured in Step 1-2.

In the laminated plate 3, the laminated surfaces 11jl... in the first round appear as they are on the outer surface 111. This laminated board 3 is placed parallel to its laminated surfaces 11, 11... at predetermined intervals, so-called 191 intervals (3rd
A 477-layer lamina 4 is manufactured by sequentially sawing and cutting at intervals shown by dotted lines in the figure.

The laminated surface 11 of the laminated lamina to be manufactured is determined by the relationship between the thickness of the sawn board 1 and the thickness of the laminated board to be finally manufactured.
The number is not limited to one, but a plurality of parallel laminated surfaces 11. I
However, when assembling in the next step, these laminated surfaces If, I
・Il): so that I... do not constitute the same plane.
4: f: Should I do this? ζ will not be 4f.

FIG. 154 is a diagram illustrating the fourth manufacturing step, which is the final step in the first step of the manufacturing method of the present invention.

That is, the laminated lamina 4 manufactured by the third step
, 4..., their long sides 31 and 31 are butted against each other and bonded together by pressure using urea wood, etc., in the same manner as in the first process. Laminated lamina 4. Laminated surface + of 4...
1. II-, J of each adjacent laminated lamina 4
j The first layer surface 11 does not form the same plane, and the l/A cross section and the third (14) are taken and cut at about D1.
By combining the laminated laminars 4, 4...
．． 11... There are cases where the same +1 side is formed.

In this case, the laminated lamina 4 can be literally translated as the laminated surface 11.
11... Assemble 9 times - -+r so that they are not flush with each other) to produce assembly 41 or 5.

In addition, as the next step, the surface of this laminated wood 5 is 41-1-
There is a final step of applying tithing and cutting to required dimensions using a planer or the like.

As described in -1- above, the manufacturing method of the present invention includes the first step of applying an adhesive between the temporarily laminated surfaces, pressing and curing, and manufacturing the laminated material, and the step of manufacturing the laminated material through this step. The second step is to produce a laminate by cutting the laminate in 1+i rows perpendicular to the laminate surface of the laminate, and then sequentially cutting the J+'i laminate parallel to the laminate surface to form a laminate. This manufacturing method includes a third step of manufacturing the laminar, and a final step of assembling the laminated laminars so that the laminated surfaces of the laminated laminars do not form the same plane.

In other words, the laminated board manufactured by this manufacturing method is
The plane front positions L of adjacent laminated surfaces are shifted, and none of them reposition to the same plane L6. Therefore, even during repeated wetting and drying, the expansion and contraction forces are dispersed over the entire cross section of the laminated board. , the laminated wood itself does not shrink or crack.

For this reason, it is possible to provide wide top plates for tabletops, knobs, counters, etc., which have almost no distortion when compared to conventional laminated boards.

[Brief explanation of the drawing]

FIG. 1 shows the first step in which a laminated material is produced by connecting sawn plates 77.
Explanation of step 1 1Δ, Figure 2 is an explanatory diagram of the second stage of cutting the laminated material to produce a laminate, Figure 3 is the ff13 stage of cutting the laminate to produce a 211-layer lamina. FIG. 4 is a diagram illustrating step 4L of manufacturing a laminated board by assembling the laminated laminates produced by the m 3 I step. ■...Hikisaka, II, 11...Laminated surface. 2... Laminated material, 2+... Long side surface. 3... Laminated board, 4... Laminated lamina. 5... Laminated board. Applicant Sanyo Kokusaku Pulp Co., Ltd. Agent Bu ``Science 1/Funabashi Synchronization 11th 1st 2171 Figure 4

Claims (1)

[Claims] 1. The first step of manufacturing the laminated material by applying interfacial adhesive between the JsI layers of the sawn board, and ``Lamination 11 of the laminated material'' and the white text and on the side = 1' line! The seventh step is to manufacture a single laminate of a predetermined width, and the lamination t(11 and v <1
4) and the λ front layer 4) are cut at predetermined intervals to produce a laminated lamina at a manufacturing plant. Forming a laminated lamina in 1: tS, A method for manufacturing a laminated board comprising 4 steps.