JPS62183302A - Divided laminated board and laminated flitch - 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 [Industrial Application Field] The present invention relates to a divided 81i laminate and a laminated plywood in which the divided laminate is combined.

[Prior Art] In a patent application previously filed on February 1, 1986, the present applicant proposed that a number of plates each having a predetermined length and having concave and convex portions alternately formed at their ends be mutually connected. Each end is stacked in a positional relationship in which the ends are shifted by the required distance in the fiber direction and the uneven parts of each end engage with each other on the upper and lower surfaces, and the upper and lower surfaces are approximately flat. We have proposed a laminate in which the plate body is bent and deformed in the thickness direction according to the unevenness. Since the bent portions of each plate in this laminated plate are non-linear, external forces acting on the adhesive surfaces at the bent portions of the laminated plate can be dispersed, and the plate is characterized by high strength.

[Object of the Invention] An object of the present invention is to provide a split laminate board that has high board strength and excellent design effects, and a laminated plywood that is a combination thereof, in connection with the application of the above-mentioned laminate board.

[Means for Solving the Problems] Therefore, the first invention includes a plurality of plates each having a predetermined length and having uneven portions alternately formed on both ends thereof, at a predetermined interval in the longitudinal direction. The uneven portions appearing on the top surface and the uneven portions appearing on the bottom surface are in a positional relationship where they engage with each other! a
The GT layered material is layered and each plate is bent in the thickness direction at a position corresponding to the uneven portion, so that the upper and lower surfaces are substantially planar. The second aspect of the present invention is to produce a divided laminate having a divided cut surface with at least one flat surface by cutting the divided laminate in the direction in which the cut surface is cut. The plate bodies are layered in a VI layer at required intervals in the longitudinal direction and in a positional relationship such that the uneven portions appearing on the upper surface and the uneven portions appearing on the lower surface engage with each other, and each plate body corresponds to the uneven portion. The laminated material is bent in the thickness direction at a certain position and the upper and lower surfaces are substantially planar.The laminated material is divided and cut in a direction substantially perpendicular to the thickness at an appropriate intermediate part in the thickness direction. The pieces are laminated and bonded together so that the divided cut surfaces face each other, thereby forming a laminated plywood board consisting of flat divided cut surfaces on both sides.

[Operations of the invention] Since the split laminate of the first invention is configured as described above,
The bent parts bent in the thickness direction according to the unevenness at both ends of the plate are connected in a non-linear manner, making it possible to disperse external forces acting on the adhesive surface at the bent parts, achieving high plate strength. ing. In addition, the divided cut surfaces are planar, and the bent pattern of the plate body corresponding to the uneven portions provides a high design effect.

Since the gi-layer plywood according to the second invention is constructed as described above, the split laminate according to the first invention is used, and the board strength is high, the front and back surfaces are flat, and the bent portion of each board has the above-mentioned irregularities. It has a high design effect due to the curved pattern depending on the part.

[Examples] Hereinafter, the first and second inventions will be explained according to the drawings showing examples.

(First invention) Figs. 1 to 5 show an embodiment of the first invention, in which Fig. 1 is a perspective view schematically showing a divided laminate according to the first invention, and Fig. 5 is a perspective view schematically showing a divided laminate according to the first invention.
The figure is a perspective view schematically showing the veneers constituting the divided laminate, FIG. 3 is a perspective view schematically showing a veneer laminated group, and FIG. 4 is a perspective view schematically showing the veneer laminated material. A veneer veneer (hereinafter referred to as a veneer) 1 as a body has one fiber in the almost horizontal direction as shown in Fig. 2, the fiber direction is the required length, and the thickness is t
is formed. At both ends 1a and 1b of each veneer 1 in the fiber direction (hereinafter, 1a is referred to as one end and 1b is referred to as the other end), there are many approximately triangular uneven portions 3a and 3b.
are formed so as to face in the direction perpendicular to the fibers and to be staggered. Each of these veneers 1 has one end 1a and the other end 1b shifted by a required distance l with respect to the substantially horizontal direction shown in FIG. 3b are laminated in such a positional relationship that they appear to substantially engage with each other when seen through in the thickness direction, forming a veneer lamination group 5.

Then, the veneer laminated group 5 formed as described above is pressurized in the thickness direction, and each veneer 1 is bent in the thickness direction according to the uneven portion 3a on the upper surface side and the uneven portion 3b on the lower surface side. A laminated veneer material 7 whose upper and lower surfaces are substantially planar is formed. Then, the veneer laminated material 7 shown in FIG. 4 is formed by cutting the length in the fiber direction to a predetermined length for each required length. The veneer laminated material 7 has each uneven portion 3a.
3b, each veneer 1 bends and deforms in the thickness direction by the thickness of one veneer 1, but this bent portion is non-linear in the direction perpendicular to the fibers in accordance with the uneven portions 3a and 3b. Appears. In addition, as the area of the convex ends in the fiber direction of each of the convex and convex portions 3a and 3b gradually decreases, the convex and convex portions 3 on the upper surface
Since the veneers 1 are stacked in such a position that the veneers a and the uneven portions 3b on the lower surface engage with each other, the peaks of the uneven portions 3a and 3b can be easily removed as the veneer laminated group 5 is pressed. It is possible to press and deform it into a flat shape.

The laminated veneer material 7 formed as described above is then cut into sections in a direction substantially perpendicular to the thickness at an intermediate position in the thickness direction (indicated by a broken line in FIG. 4), and the two parts shown in FIG. Two divided laminates 9 are formed.

As shown in FIG. 1, this divided laminated board 9 has a flat divided cut surface 9a, and the laminated state is shifted by one veneer in the thickness direction at the bent part, so that each unevenness A triangular cut pattern is formed which is shifted by approximately an interval l in the fiber direction according to the portions 3a and 3b.

Note that when forming a veneer laminate 7 having a thickness T using a large number of veneers 1 having approximately the same thickness, the mutual spacing between the ends of each veneer 1 in the fiber direction is 1= The relationship (L-t,)/T holds true. In general, since the length L of each veneer 1 in the m-minor direction and the thickness T of the veneer laminate 7 to be formed are determined in advance, the plate strength required for the divided laminate 9 can be adjusted. Accordingly, the mutual spacing 11 between the ends of each veneer 1 and the thickness t of the veneer 1 are set appropriately.

FIG. 5 is an explanatory diagram without showing the manufacturing method of the divided laminate board 9. On the conveyance surface of the alignment conveyance device 11, a large number of hanging step portions 11a facing in the direction perpendicular to They are formed at intervals. Then, the other end 1b of each veneer 1, which has been coated with an adhesive such as phenolic resin on at least one side entirely or in a necessary part, is sequentially attached to the hanging step 1.
By hooking each veneer 1 to the veneer 1a, the two end portions 1a and the other end 1b are shifted by the required amount 1 with respect to the conveying direction, and the uneven portion 3a on the upper surface side and the uneven portion on the lower surface side are The portions 3b are stacked in such a positional relationship that they engage with each other.

Each of the veneers 1 stacked as described above is arranged above the lower side of the alignment conveyance device 11 in the conveyance direction, and the temporary pressurization device 13 that applies pressure with a belt allows the two end portions 1a and the other end portions 1b to be pressed together. The veneers are laminated by being temporarily bonded so as to maintain a positional relationship in which the uneven portion 3a of the end portion 1a and the uneven portion 3b of the other end portion 1b engage with each other on the upper and lower surfaces with the required spacing l. Group 5 is formed. The veneer stack group 5 formed as described above is cut into lengths in the fiber direction of the veneer stack group 5 by a fixed length cutting device 15 such as a circular saw disposed on the lower side in the conveyance direction of the alignment conveyance device 11. The fibers are cut to the required length. Each veneer laminated group 5 that has been cut to a specified length is reduced in thickness by main pressing by a hot press type or cold press type main pressing device 17 disposed in the transport direction of the specified length cutting device 15. Pressure is applied in the horizontal direction, and the adhesive is cured. At this time, each veneer 1 constituting the veneer stack group 5 is bent in the thickness direction of the veneer stack group 5 according to the uneven portion 3a at one end 1a and the uneven portion 3b at the other end 1b. A laminated veneer material 7 is formed whose upper and lower surfaces are substantially planar. The bent portion of each veneer 1 becomes non-linear with respect to the direction perpendicular to the fibers, depending on the uneven portions 3a and 3b. In addition, the amount of bending of each veneer 1 is such that the uneven portion 3a located on the upper surface side and the uneven portion 3b located on the lower surface side are in a positional relationship where they engage with each other.
The thickness is equivalent to 11 veneers.

Next, a dividing cutting device 19 disposed on the downstream side of the hydraulic clamping device 17 in the conveying direction cuts the laminated veneer material 7 at an intermediate position in the thickness direction (indicated by a broken line in FIG. 4), which is approximately perpendicular to the thickness. Two divided laminate plates 9 are simultaneously formed by dividing and cutting in the direction shown in FIG. The divisional cutting positions are appropriately set according to the thicknesses t1 and t2 of the upper divided laminate plate 9 and the lower divided laminate plate 9 to ensure sufficient plate strength. In this case, a divided laminate having planar upper and lower surfaces can be formed by dividing and cutting in a direction perpendicular to the thickness at a plurality of locations in the thickness direction. The divided laminate plate 9 formed as described above has a cut pattern in which the divided cut surfaces are approximately triangular in accordance with the uneven portions 3a and 3b and are shifted by approximately an interval 1 in the fiber direction.

In the above description of the manufacturing method, after the veneer laminated group 5 is cut to a fixed length, the veneer laminated material 7 is formed by final pressing, and then the single veneer laminated material 7 is cut into segments to form the divided laminates 9. However, the veneer laminate 7 is formed by continuously pressing the veneer laminate group 5 before being cut to a specified length, and then the veneer laminate 7 is divided and cut to form the divided laminate 9. Then, the divided laminate plate 9 may be cut into regular lengths. Alternatively, the veneer laminate 7 after continuous pressing may be cut into pieces after being cut to a fixed length.

In this way, the divided laminate plate 9 according to this embodiment has high plate strength by dispersing the external force. Further, the divided cut surface 9a has a triangular cut pattern corresponding to each uneven portion 3a and 3b. Because it appears shifted by approximately the distance l in the direction of the force,
It has a high design effect.

In the above explanation, the uneven portions 3a and 3b, which are triangular shapes connected in the direction perpendicular to the fibers, are formed alternately on both ends 1a and 1b of each veneer 1. When the board 1 is pressed in the thickness direction of a large number of laminated veneer groups 5 stacked with a required gap, the bending state of each veneer 1 is m.
They may have any shape, such as a square shape, a trapezoid shape, or a wave shape, which are non-linear with respect to the H orthogonal direction and which engage with each other. In addition, the one end 1a and the other end 1b of each veneer 1 are cut and removed to form the uneven parts 3a and 3b, but when the uneven parts 3a and 3b are formed in this way, the veneer 1 A part of the veneer 1 had to be cut and removed, and the material yield of the veneer 1 was poor. Therefore, as shown in FIG. 6(A), both ends 31a and 3 of the first veneer 31 in the fiber direction are
In contrast to 1b, uneven portions 33a and 33 are formed by cutting the second veneer 33 into an uneven shape at the intermediate portion in the fiber direction.
veneer 35 which is laminated by joining b so that the uneven parts 33a and 33b are alternated at both ends.
may be formed. In this case, m1 of the first veneer 31 and the second veneer 33 to which the uneven parts 33a and 33b are joined
By making the n direction substantially orthogonal, a veneer laminate 7 is formed in which the fiber directions of the upper and lower surfaces and the intermediate portion are orthogonal to each other, thereby obtaining a divided gI laminate 9 in which the yaH directions of the upper and lower surfaces are different. Is possible. In addition, as shown in FIG.
After forming a and 37b, the uneven portion 37b is cut and formed.
The veneer 39 may be formed by joining the veneer 39 to the uncut end of the veneer 37 so that the uneven portions 37a and the uneven portions 37b are alternately formed. Note that the uneven portions 33a and 33b are placed on both ends 31a and 31b of the first veneer 31, and the uneven portion 37b is placed on the uncut end of the veneer 37 in a non-engaged state to form the veneers 35 and 37. may be formed.

In the above explanation, a veneer laminate 7 is formed using a large number of veneers 1 in which a large number of uneven parts 3a and 3b are alternately formed in the direction perpendicular to the fibers at both ends 1a and 1b. The veneer l1fi laminate 7 was divided and cut to form the divided fa laminate 9, but as shown in FIG. A first veneer 4 having an uneven portion 53b corresponding to the uneven portion 43a.
1, a concavo-convex portion 47a whose apex is shifted from the top of the concave-convex portion 43a on the one end portion 45a, and the other end portion 4
5b has an uneven portion 47b corresponding to the uneven portion 47a,
A second veneer 45 having a symmetrical shape with the first veneer 41
are stacked in a required positional relationship such that the uneven portions 43a and 43b and the uneven portions 47a and 47b engage with each other on the upper and lower surfaces.

That is, as shown in FIG. 7(B), each side AB, DE, BC
and EF, AD and CF are parallel and angle BAD and angle BCF are equal at angle θ, the distance between a line drawn from point A at right angles to side AD and a line drawn from point 0 at right angles to side CF. A first veneer 41 having a shape such that the length 12 of the side AD is 12 = 2na (n is an integer) and a second veneer 41 formed by turning the first veneer 41 over. First, with the first veneer 41 and the second veneer 45 on its side CF,
The second veneers 45 are overlapped with the side C'F= of
With the sides AD of the next first veneer 41 aligned,
The tube 1 and the second veneers 41 and 45 are sequentially stacked one on top of the other so that the veneers 41 of the cylinder 1 and the second veneers 41 and 45 are stacked on top of each other. As a result, the first and second veneers 41 and 45 are stacked in a state shifted by the distance a.

Then, the first veneer 41 and the second veneer 45 are similarly bent in the thickness direction by applying pressure using a hot press device or the like so that the upper and lower surfaces become substantially planar as shown in FIG. The veneer laminate 49 is formed so that the bent portions corresponding to the uneven portions 43a and 43b and the uneven portions 47a and 47b are non-linear. And this veneer laminate 4
The divided laminate plate 51 may be formed by dividing and cutting 9 in a direction perpendicular to the thickness at an intermediate portion in the thickness direction.

This divided laminated material 51 has a bent part of the veneer laminated material 49 on the divided cut surface 51a, which partially has a thickness of one or two first and second veneers 41 and 45 in the thickness direction. Since it is bent according to the shape, it has the pattern shown in FIG.

Furthermore, the above description applies to a number of veneers 1.35.39.41.45 having fibers in the horizontal direction as shown in FIGS.
After laminating in the required relationship, each veneer 1.35.39.4
1.45 for each uneven portion 3a-3b, 33a-33b,
37a-37b, 43a-43b, and 47a-47b to form a veneer laminate material by bending in the thickness direction, and by dividing and cutting the veneer W4 material, a divided laminate is formed. However, these veneers 1.35.39.41.
45 does not necessarily have fibers extending in the substantially horizontal direction as shown in FIGS. Single plates having IN may be combined as appropriate. Also, the plate body is made of single plate 1.35.
39.41.45, the present invention may be applied to various other board bodies such as wood boards, (particle boards) plaster boards, and synthetic resin boards.

(Second Invention) Next, a laminated plywood in which divided laminates are combined according to the first invention will be described with reference to FIGS. 1 and 10.

In Fig. 1 and Fig. 10 showing the outline of stacked plywood, 8!
The im plywood 61 is made by laminating and bonding two divided laminated plates 9 shown in FIG. 1 so that their undivided cut surfaces 9b face each other. This laminated plywood 61 has each division W4 on its upper and lower surfaces.
Since the divided cut surfaces 9a of the laminates 9 are located, each veneer 1 is shifted by approximately the distance l between each veneer 1 in the fiber direction, and each uneven portion 3a.
It has a pattern with a shape corresponding to 3b and has a high design effect. The laminated state of each divided laminate 9 may be such that the bent portions in the thickness direction of each divided laminate 9 almost match each other, but the laminated state may be such that the bent portions of each divided laminate 9 do not match. There may be. That is, when the bent parts of each divided laminate board 9 coincide, the board strength deteriorates because the bent part continues in the thickness direction of the laminated plywood 61; When not doing so, the bent portion becomes discontinuous in the thickness direction of the laminated plywood 61. For example, when an external force acts on the bent portion of the divided laminated board 9 located on the upper surface side of the laminated plywood 61, It is possible to absorb external force at the plane part of the divided laminated board 9 located on the lower surface side of the laminated plywood 61, and avoid external force from acting on the bent part of the divided 81-layered board 9 located below. 61 plate strength can be increased.

As for the manufacturing method of the laminated plywood 61, among the pair of upper and lower divided laminates 9 formed by the dividing and cutting process shown in FIG. After inverting and laminating and bonding, the laminated plywood 61 is formed by hardening the adhesive while pressing the divided laminates 9 on which the divided V4 laminates 9 are laminated in the thickness direction.

In this way, in this embodiment, since the front and back surfaces are composed of the divided cut surfaces 9a, the flatness thereof is excellent, and in addition, the front and back surfaces are shifted by almost a distance in the fiber direction according to the shape of each uneven portion 3a and 3b. The cut pattern is rough and has a high design effect.

The above description assumes that the two divided laminates 9 shown in FIGS. 1 to 5 are glued together with their non-divided cut surfaces 9b facing each other to form the laminated plywood 61. However, any configuration in which divided laminates formed by the method shown in the modification of the first invention are laminated and bonded may be used.

Furthermore, in the above description, the pair of upper and lower divided fa layer plates 9 are directly bonded with their divided cut surfaces 9a facing each other, but as shown in FIG. Behind the laminate 9, a veneer 63 having fibers in a direction perpendicular to or in the same direction as the fibers of the divided laminate 9 (FIG. 11 shows a veneer 63 having fibers in a direction perpendicular to the fibers of the divided laminate 9) It may also be a laminated plywood 65 formed by laminating and adhering with the intervening material.

[Effects of the Invention] Therefore, the present invention can provide a split laminate that has high board strength and excellent design effects, and a laminated plywood that is a combination of the split laminates.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing a divided laminate according to the first invention, FIG. 2 is a perspective view schematically showing a veneer constituting the divided laminate, and FIG. 3 is a schematic perspective view of a group of veneer laminates. A perspective view, FIG. 4 is a perspective view schematically showing a veneer laminated material, FIG. 5 is an explanatory view showing a method for manufacturing a split laminate, and FIGS. 6 to 9 show modified embodiments of the first invention. 10 is a perspective view schematically showing a laminated plywood according to the second invention, and FIG. 11 is an explanatory view showing a modified embodiment of the second invention. In the figure, 1 is a veneer as a plate, 1a is one end, 1b is the other end, 3a and 3b are uneven parts, 7 is a veneer laminated material constituting a laminate, 9 is a divided laminate, and 61 is a Laminated plywood, L is the length of the veneer, and l is the spacing.

Claims (2)

[Claims] (1) A large number of plates of a required length with uneven portions formed alternately on both ends are spaced at a required interval in the longitudinal direction, and the uneven portions appearing on the upper surface and the uneven portions appearing on the lower surface are mutually arranged. The laminated material is laminated in a positional relationship that engages with each other, and each plate is bent in the thickness direction at a position corresponding to the uneven portion, so that the upper and lower surfaces are substantially flat. 1. A split laminate, characterized in that the split laminate is cut into sections in a direction substantially perpendicular to the thickness, and at least one surface is made of a planar split cut surface. (2) A large number of plates of a required length with uneven parts alternately formed on both ends are spaced at required intervals in the longitudinal direction, and the uneven parts appearing on the upper surface and the uneven parts appearing on the lower surface are arranged at required intervals in the longitudinal direction. The laminated material is laminated in a positional relationship in which they engage with each other, and each plate is bent in the thickness direction at a position corresponding to the uneven portion, and the upper and lower surfaces are substantially flat. The divided laminates formed by cutting the divided laminates in a direction substantially perpendicular to the thickness are laminated and bonded to each other so that the undivided cut surfaces face each other, and both sides are made of planar divided cut surfaces. Laminated plywood.