JP2722026B2 - Veneer laminated material, decorative material using the laminated veneer material, and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a veneer laminate used for various purposes such as construction, furniture, vehicles, ships, packaging boxes, and a decorative material using the veneer laminate, and its production. It is about the method.

[0002]

2. Description of the Related Art A single plate (Ven e) having a thickness of about 2 to 3 mm cut by a rotary race or a slicer or the like.
) are mainly laminated and adhered in parallel in the fiber direction to each other in an LVL (Laminated Venue Lu).
Single-layer laminated material called mber) is used as a structural material or building material for wooden house construction, or as a door or door frame material, as well as a casing, a door stop, furniture face material, a frame material, a leg member, a ceiling material. It is used as daily necessities such as surrounding materials, floor skirting boards, cupboard trolleys, facing materials, doors, counter tables, and hardwood structural materials that also serve as decorative materials.

[0003] Such laminated veneer lumber (hereinafter simply referred to as LVL) is made of hardwood such as rawan, apiton and beech, or coniferous log such as rice hemlock, rice pine, hiba and cedar to an appropriate size. After the ball is cut, it is cut into a thickness of about 2 to 3 mm by a rotary lace to produce a veneer having a predetermined length, and the obtained veneer is dried by a drier, and then a plurality of veneers are cut into fibers. Laminate the laminate in parallel with the directions parallel to each other with an adhesive, apply the cold press to the laminated material thus obtained, temporarily tighten it, and then apply the hot press and perform hot press or simply continuous After the entire laminated material obtained by press working is smoothed, the laminated material is cut into a predetermined width and sanded only on the surface portion to be polished to obtain an LVL.

[0004]

The known method of manufacturing an LVL is based on a method in which a rotary veneer obtained by a rotary race or a sliced veneer obtained by a slicer is used in a state where the whole is wavy. The whole is not smooth. Therefore, even if the veneer obtained by a known method is dried with a dryer while applying pressure, it is difficult to obtain a smooth veneer, and the veneer in such a wavy state is laminated using an adhesive. However, the adhesion between the veneers is not good. Further, it has been extremely difficult to obtain a laminated material having a smooth overall surface even if cold or hot pressing is performed on the laminated material laminated with the adhesive, or simply continuous pressing is performed.

In view of such circumstances, the present invention can efficiently and mass-produce a high-quality laminated veneer material.
Moreover, it is an object of the present invention to provide an excellent decorative material by subjecting the obtained laminated veneer material to simple processing.

[0006]

According to the present invention, there is provided a veneer laminate comprising a single veneer of a predetermined length, which is obtained by cutting both ends in the fiber direction symmetrically and obliquely, into a single veneer. In the same direction, the edges are adhered to each other to form a long veneer, and the obtained long veneer is cut into a predetermined length in the fiber direction to obtain a laminate material having a seam. A non-woven fabric is stuck on the back side of the laminated core material obtained by laminating and bonding a plurality of materials with the fiber direction parallel, and the whole is joined smoothly.
A veneer that is thinner than the veneer veneer,
It is characterized by being laminated and bonded in parallel with the fiber direction of the layer core material and integrated.

Further, the decorative material of the present invention provides a single veneer of a predetermined length, which is obtained by symmetrically cutting the edge portions at both ends in the fiber direction and has the same fiber direction in each veneer. The edges are glued together to form a long veneer, and the obtained long veneer is cut into a predetermined length in the fiber direction to form a laminate having a seam. not on the surface of the laminated core material obtained by laminating the adhesive in the parallel direction
The woven fabric is adhered to the back side and the whole unit is smooth and seamless.
The thickness of the veneer is thinner than the veneer.
It is characterized in that a single veneer laminated material which has been laminated and adhered in parallel in the direction is integrated into a desired shape by cutting.

The method for producing a laminated veneer material is as follows: (1) After cutting a thin veneer obtained by cutting with a rotary lace or a slicer into a predetermined length, this is alternately subjected to hot pressing and cold pressing. And smoothing the entire veneer. (2) A step of symmetrically and obliquely cutting the edges at both ends in the fiber direction of the smoothed veneer to form an inclined cut surface at the edges. (3) A step of forming a long veneer by bonding a plurality of veneers having symmetrically formed inclined cut surfaces at the fore-edges at both ends and bonding the corresponding inclined cut surfaces with the same fiber direction. (4) The long veneer is cut to a predetermined length in the fiber direction, and a plurality of the obtained laminated board materials having the seam are laminated and bonded with the same fiber direction of each laminated board material, and the laminated board on the surface is cut. A non-woven fabric is adhered to the back of the material and the entire surface is smooth
A veneer that is thinner than the veneer veneer,
By parallel to the fiber direction of the layer core splicing of the veneer by remote thin
The fiber direction of a seamless veneer is set to the fiber direction of the laminated board material.
And polymerizing and bonding in parallel . It is characterized by consisting of.

Another method for manufacturing the laminated veneer material is as follows: (a) When a log material is cut by a rotary lace to produce a thin rotary veneer, a surface portion of the log material to be cut by a knife is used. Cutting while pressing with a pressure bar. (B) After cutting the obtained rotary veneer to a predetermined length,
This is a process of alternately performing hot pressing and cold pressing to smooth the entire rotary veneer. (C) a step of symmetrically and obliquely cutting the edges at both ends in the fiber direction of the smoothed rotary veneer to form an inclined cut surface at the edges. (D) A step of forming a long veneer by bonding a plurality of rotary veneers having symmetrically formed inclined cut surfaces at the fore-edges at both ends and bonding the corresponding inclined cut surfaces with the same fiber direction. (E) A long veneer is cut to a predetermined length in the fiber direction, and a plurality of the obtained laminated board materials having the seam are laminated and bonded with the same fiber direction of each laminated board material, and the laminated board on the surface is also laminated. A non-woven fabric is adhered to the back of the material and the entire surface is smooth
A veneer that is thinner than the veneer veneer,
A step of polymerizing and bonding in parallel with the fiber direction of the layer board material . It is characterized by consisting of.

In the veneer laminate of the present invention, the material and thickness are not particularly limited as long as the veneer itself is a thin one cut by a rotary lace or a slicer, but the thickness is 2 to 2. About 3 mm is preferable,
Generally, the width is preferably about 600 to 1200 mm from the viewpoint of workability, but may be a length corresponding to the plane area of the laminated veneer or decorative material to be obtained.

The veneer is dried to the extent that it does not lose its flexibility during production to remove moisture, but is generally not wavy and smooth in its entirety. Therefore,
The obtained veneer is alternately subjected to hot pressing and cold pressing so that the whole becomes smooth. By such an operation, a dense veneer having no unevenness on the front and back surfaces of the veneer can be obtained.

The thus obtained overall smooth veneer is obtained by diagonally cutting the edges at both ends in the fiber direction to form an inclined cut surface, and bonding the corresponding inclined cut surfaces of the plurality of veneers respectively. Thereby, a long veneer in the direction of the fiber of the entire power cavity is formed. The obtained long veneer is cut into a predetermined length in the fiber direction to form a laminated plate material having a seam, and a plurality of the laminated plate materials are laminated and bonded with the fiber direction parallel to form a laminated core material.

The laminated core material is desirably made of a single plate having no knots or cracks as much as possible. However, the laminated core material is free from knots and cracks within a range that does not cause inconvenience in the quality and strength of the laminated core material. A veneer can be used. Each of the laminated core materials has a seam, and a single-layer laminated material is formed by laminating and bonding a single, seamless, whole surface on the surface of the laminated core material.
The veneer laminated and bonded to the surface of the laminated core material is not particularly limited as long as the nonwoven fabric is adhered to the back surface and has no seams and the thickness is thinner than the veneer used for the laminated core material. Preferably, it is a single plate of the same or different quality as the laminated plate material constituting the laminated core material and having a thickness of about 0.5 mm.

In the above-described method for producing a veneer laminated material, the laminated core material comprises a plurality of laminated plate materials obtained by cutting a long veneer having a seam into a predetermined length, in parallel with the fiber direction. Although the laminated core material is laminated and bonded in a state, a plurality of single plates having long seams are laminated and bonded in a state where the fiber directions are parallel to each other, and then cut to a predetermined length in the fiber direction. It can also be a laminated core material.

[0015]

The laminated veneer according to the present invention is obtained by bonding a plurality of veneers, each of which is smooth as a whole and has an inclined surface obtained by symmetrically cutting the edges at both ends in the fiber direction into inclined surfaces. A plurality of laminated board materials obtained by cutting this into a long veneer and cutting it to a predetermined length in the fiber direction are laminated and bonded to form a laminated core material, so that the laminated core material is laminated and adhered to the surface of the laminated core material. By changing the type of veneer to be used, a desired veneer laminate can be obtained.

Further, since the decorative material of the present invention can be obtained by cutting the above-mentioned laminated veneer material, the desired material can be obtained simply by changing the type of veneer and the cutting method on the surface of the laminated core material. It can be a cosmetic material.

The method for producing a veneer laminated material is such that a hot veneer and a cold press are alternately applied to a thin veneer of a predetermined length obtained by cutting with a rotary lace or a slicer, and the veneer itself is used before the veneer itself is used. Is smoothed to
It is possible to easily process the inclined cut surfaces into the small edges at both ends of the veneer, and to connect the corresponding inclined cut surfaces of the plurality of veneers simply and easily with an adhesive.

In another method of manufacturing a laminated veneer material, when the log material is cut by a rotary lace to obtain a veneer, the surface of the log material to be cut with a knife is pressed by a pressure bar. By carrying out, a dense veneer with few cracks can be manufactured.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a laminated veneer of the present invention, a decorative material using the laminated veneer, and a method of manufacturing the same. FIG. 1 shows an embodiment of a laminated veneer material according to the present invention. A laminated veneer material 1 is formed by laminating a plurality of laminated plate materials 2 each having a predetermined length and a smooth overall surface. Back the nonwoven fabric on the surface of the laminated core 3
It is a thin single plate 4 with no seams attached to the surface and laminated and bonded. In addition, the nonwoven fabric stuck on the back of the veneer 4 in the figure
Is not shown .

As shown in FIG. 3, the laminated board material 2 has a predetermined length obtained by cutting with a rotary lace or a slicer, for example, a relatively thin veneer 5 having a thickness of 2 mm and a width of 600 mm in the fiber direction. The fore edge is cut symmetrically at an angle of about 45 ° to form an inclined cut surface 5a, and the veneers 5, 5 to be connected are positioned at the front and back with the same fiber direction and the corresponding inclined cut surfaces 5a, 5a. An adhesive is applied to each other, and they are overlapped with each other, and the seam a is press-bonded to form a long single plate 6.
It is formed by cutting the obtained long veneer 6 into a predetermined length L in the fiber direction as shown in FIG.

Since the veneer 5 having a predetermined length obtained by cutting with the rotary race or the slicer or the like usually contains more moisture than necessary, the veneer 5 is rolled using a roll drier (not shown) or the like. The veneer 5 is dried to such an extent that the flexibility is not impaired, but the veneer 5 that has undergone the drying step has a undulating and rough surface as shown in FIG. Therefore, in order to eliminate the entire wavy and smoothen, the veneers 5 to be used are alternately passed through a hot press and a cold press, and processed to be a dense veneer without unevenness on the front and back surfaces.

A thin layer that is laminated and adhered to the surface of the laminated core material 3
Veneer 4 is seamless and thinner than veneer 5
In this case, the veneer may be of the same quality as the veneer 5, and may be a veneer of a sheet or band shape formed by attaching a nonwoven fabric to the back surface of a veneer having a thickness of about 0.5 mm.

FIG. 6 shows a decorative material 7 formed by cutting the above-described laminated veneer material 1 into a casing material such as a door frame material. Apply paint accordingly. The area to be coated is simply the veneer 4 as described above.
May be used alone, or may be the range of the arrow shown in FIG.

A method of manufacturing the laminated veneer 1 having such a structure using a rotary veneer will be described below.
In FIG. 7, 10 is 1200 mm to 3000 mm in length.
It is a log made of rice made of deciduous trees cut to a certain degree.
The log material 10 is rotatably supported by the chuck 11 at the center of both ends of the cut, and a drive roll 13 for rotating the log material 10 by slightly biting a number of blades 12 provided around the circumference of the log material 10 is provided. The log material 10 is set by the rotary lace blade 14 so that the log material 10 can be peeled to a thickness of 2 to 3 mm, and the front of the edge of the rotary lace blade 14 is pressed by the pressure bar 15 from the surface of the veneer log material 10. A dense rotary veneer 16 is manufactured.

At this time, the back surface of the log 10 is always in contact with the non-rotating backup roll 17.
This backup roll 17 ensures that even if the log material 10 is cut by the rotary lace blade 14 and the diameter thereof gradually becomes smaller, the pressure bar 15 is always applied with the set pressure and is cut by the rotary lace blade 14. This is to make the veneer 16 always have a constant thickness.

In the embodiment, rice material made of deciduous tree, which is easily available and economical, is used, but the material is not limited to rice material.

As shown in FIG. 8, the rotary veneer 16 obtained by cutting the rotary lace blade has a length of 600 mm to 1200 mm in a direction perpendicular to the feeding direction, or using the veneer laminate 1 of the present invention. The cut 18 is cut to a length corresponding to the plane area of the decorative material to be obtained, and the dense veneer 5 is manufactured.

The veneer 5 thus obtained is passed through a line of a roll drier or the like (not shown) in order to remove the contained water until the flexibility is not lost, and immediately before passing the veneer 5 through the drier. Or immediately thereafter, sort out the veneer that has nodes or large cracks that cannot be used, outside the line.

The veneer 5 passed through the roll dryer is relatively thin, about 2 to 3 mm in thickness, and a large amount of water is removed by drying. As a result, the veneer is exaggerated in FIG. As shown, there is a wavy roughness in the vertical and horizontal directions. If the veneered veneer 5 having such a wavy shape is used as it is, it causes a bonding failure in a bonding process described later, and the work efficiency becomes extremely poor. Therefore, it is necessary to smooth the veneer 5 in advance. is there.

Therefore, as shown in FIG. 9, a plurality of veneers 5 having undergone the drying step are stacked and a pressure is applied to a hot press device 20 and a cold press device 21 through which an intermittently moving endless belt 19 is passed in common. Then, the veneer is heated by a hot press 20 to make the veneer 5 flexible, and the veneer after the heating step is rapidly cooled by a cold press 21 to remove the roughness, so that the front and back surfaces have no irregularities. Process into veneer 5.

In the hot pressing step, the temperature is about 140 ° C., the pressing pressure is about 1 kg / cm ² and the pressure is about 40 ° C.
Heat is applied for about 60 seconds to soften the lignin contained in the veneer so that the whole veneer is softened.

In this embodiment, a plurality of veneers 5 are stacked and passed through a hot press device 20 and a cold press device 21. May be disposed for processing.

The veneer 5, which has been entirely smoothed through the hot press process and the cold press process, cuts the edges at both ends in the fiber direction symmetrically and obliquely in the thickness direction to form an inclined cut surface 5a. Then, an adhesive is applied to the downward inclined cut surface 5a of one veneer 5 and the upward inclined cut surface 5a of the other veneer 5, and then polymerized, pressed and bonded. To produce a long veneer 6. At that time, the fiber direction of each veneer 5 is the same and integrally connected. Next, a long veneer 6 in which a plurality of veneers 5 are connected in the same fiber direction is cut into a fixed length L in the fiber direction as shown in FIG. Material 2

The laminate material 2 thus obtained has a seam a at least in part, and an adhesive such as urea is applied to the front and back surfaces of the laminate material 2 having the seam a. Thereafter, the laminated core material 3 is formed by laminating the fibers in a state where the fiber directions are parallel to each other and pressing and integrating them. When manufacturing the laminated core material 3, a veneer having relatively small nodes or light cracks can be used as long as the quality of the obtained laminated veneer material 1 is not extremely deteriorated. The laminated core material 3 is formed by laminating a plurality of laminated board materials 2 having a plurality of seams a, and the thickness thereof is determined by the obtained veneer laminated material 1. There are no restrictions.

The laminated core material 3 obtained through the above steps
A single veneer material 1 is manufactured by laminating and adhering veneers 4 of a predetermined length without seams formed by attaching a nonwoven fabric to the back surface and making the fiber directions parallel to each other.

The veneer 4 adhered to the surface of the laminated core 3
Is intended no seamless over the entire surface unlike the laminated plate material 2, yet is used which entirely smoothed, its
Use a thickness of about 0.5 mm, which is thinner than the single plate 5.
To use. Veneer laminated material 1 by using such a thin veneer
It can be a desired decorative material 7 only simply cutting process.

[0037]

The laminated veneer of the present invention has a predetermined thickness, obtained by cutting with a rotary lace or a slicer, and is laminated and adhered to a single veneer having a small thickness and smoothness as a laminated core. , A non-woven fabric on the back surface of the laminated core material
The thin, seamless veneer that has been worn is
Since the fiber direction is parallel and bonded together,
Since the bonding between the laminate materials is extremely strong and the quality is good, there is no variation in mechanical properties, and it can be used for a wide range of uses such as construction, industrial, and daily necessities.

The decorative material using the veneer laminate can be easily and easily obtained by simply cutting the veneer laminate into a desired shape, and has excellent economic efficiency.
By changing the thickness and type of veneer on the surface, it has a rich variety.

Further, according to the method for producing a laminated veneer of the present invention, a hot veneer and a cold press are alternately applied to a veneer of a predetermined length obtained by cutting with a rotary lace or a slicer to correct wavy roughness. Since the pre-treatment is performed so that the whole becomes smooth, the handling of the veneer after the fact can be made extremely easy.

Further, the smoothed veneer is cut symmetrically at the ends at both ends in the fiber direction to form an inclined cut surface, and the symmetrically cut edges of the veneer in the length direction are formed. Is bonded, so that the veneer itself does not warp or twist after bonding.

A single veneer formed by bonding small edges to each other and having the same fiber direction and having a long length is cut into a predetermined length in the fiber direction to obtain a laminate material having seams. The materials are laminated and bonded in the same fiber direction, but since each laminated plate material has no warpage or twist, bonding can be performed easily and reliably, and the mechanical strength of the obtained laminated core material is extremely low. In addition to using a long veneer, which is cut to a predetermined length, it is possible to manufacture a laminated core material at low cost without waste of material. it can.

The veneer laminated and adhered to the surface of the laminated core material has no seam at all like a laminate material, so that the laminated core material having the seam is hidden inside and the obtained veneer is obtained. since laminates are those good on very appearance appearance, it is possible to use even more versatile, rich Barieishon by the this changing the thickness and material of the veneer to be laminated and adhered on the surface of the laminated core member The veneer laminate can be easily and easily manufactured.

In particular, since the veneer laminate obtained by the method of the present invention has a surface covered with a seamless veneer, a decorative material can be produced only by cutting it into a desired shape. in which it has excellent Features in that it is.

In the method of manufacturing a laminated veneer of the present invention using a rotary veneer obtained by cutting a log material by a rotary lace, a knife is used for cutting the veneer. Since the surface of the log material is cut by pressing with a pressure bar, the obtained rotary veneer has very few cracks, the yield rate in veneer production is very good, and the obtained single veneer is obtained. The quality of the plate laminate can be further improved. In particular, rice logs made of deciduous trees are very easily available and inexpensive, so that it is possible to provide a large number of high-quality laminated veneers at low cost.

[Brief description of the drawings]

FIG. 1 is a side view of a veneer laminate of the present invention.

FIG. 2 is an enlarged plan view in which a part of the veneer laminate in FIG. 1 is cut away.

FIG. 3 is an enlarged perspective view showing a main part of a smoothed veneer used for a veneer laminate.

FIG. 4 is a perspective view showing a part of a long veneer obtained by bonding the veneer shown in FIG. 3;

FIG. 5 is an exaggerated side view showing a state before smoothing of the veneer shown in FIG. 3;

FIG. 6 is a perspective view of a decorative material using the veneer laminate of the present invention.

FIG. 7 is an explanatory view illustrating a process of manufacturing a rotary veneer in the method of manufacturing a veneer laminate of the present invention.

FIG. 8 is an explanatory view showing a process of manufacturing a veneer by cutting a veneer cut by a rotary race into a predetermined length in a direction perpendicular to a feeding direction.

FIG. 9 is an explanatory view illustrating a hot press step and a cold press step for smoothing a rotary veneer or a slice veneer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Veneer laminated material 2 Laminated plate material 3 Laminated core material 4 Veneer of surface in veneered laminated material 5 Veneer 5a Slant cut surface a Seam 6 Long veneer 7 Cosmetic material 10 Log material 13 Drive roll 14 Rotary race Blade 15 Pressure bar 16 Rotary veneer 20 Hot press device 21 Cold press device

Continuation of front page (56) References JP-A-61-258702 (JP, A) JP-A-2-151401 (JP, A) JP-A-1-259901 (JP, A) JP-A-61-241101 (JP) JP-A-58-181603 (JP, A) JP-A-61-123116 (JP, U) JP-B-61-21805 (JP, B2) JP-B-52-6326 (JP, B2) JP-B Shower 58-57283 (JP, B2) JP-B-59-35786 (JP, B2)

Claims (4)

(57) [Claims] 1. A single veneer having a predetermined length, which is obtained by cutting the edge portions at both ends in the fiber direction symmetrically and obliquely, and bonding the edge portions to each other with the fiber direction of each veneer being in the same direction, is long. Along with the veneer, the obtained long veneer is cut into a predetermined length in the fiber direction to form a laminated plate material having a seam, and a plurality of these laminated plate materials are laminated and bonded with the fiber direction parallel. Non-woven fabric is stuck on the back of the laminated core material
Veneer veneer thinner than the veneer without smooth seam
A single-layer laminated material, wherein the direction is parallel to the fiber direction of the laminated core material, and the laminate is bonded and integrated. 2. A decorative material obtained by cutting the laminated veneer of claim 1 into a desired shape. 3. A method for producing a veneer laminate, comprising the following steps (1) to (4). (1) A step of cutting a thin veneer obtained by cutting with a rotary lace or a slicer or the like into a predetermined length, and then alternately performing hot pressing and cold pressing to smooth the entire veneer. (2) A step of symmetrically and obliquely cutting the edges at both ends in the fiber direction of the smoothed veneer to form an inclined cut surface at the edges. (3) A step of forming a long veneer by bonding a plurality of veneers having symmetrically formed inclined cut surfaces at the fore-edges at both ends and bonding the corresponding inclined cut surfaces with the same fiber direction. (4) The long veneer is cut to a predetermined length in the fiber direction, and a plurality of the obtained laminated board materials having the seam are laminated and bonded with the same fiber direction of each laminated board material, and the laminated board on the surface is cut. A non-woven fabric is adhered to the back of the material and the entire surface is smooth
A veneer that is thinner than the veneer veneer,
The joint is thinner than the veneer in parallel with the fiber direction of the layer core material.
The fiber direction of a seamless veneer is set to the fiber direction of the laminated board material.
And polymerizing and bonding in parallel . 4. A method for producing a veneer laminate, comprising the following steps (a) to (e). (A) A step of cutting a log material with a pressure bar while pressing a surface portion of the log material to be cut with a knife when the log material is cut by a rotary race to produce a thin rotary veneer. (B) After cutting the obtained rotary veneer to a predetermined length,
This is a process of alternately performing hot pressing and cold pressing to smooth the entire rotary veneer. (C) a step of symmetrically and obliquely cutting the edges at both ends in the fiber direction of the smoothed rotary veneer to form an inclined cut surface at the edges. (D) A step of forming a long veneer by bonding a plurality of rotary veneers having symmetrically formed inclined cut surfaces at the fore-edges at both ends and bonding the corresponding inclined cut surfaces with the same fiber direction. (E) A long veneer is cut to a predetermined length in the fiber direction, and a plurality of the obtained laminated board materials having the seam are laminated and bonded with the same fiber direction of each laminated board material, and the laminated board on the surface is also laminated. A non-woven fabric is adhered to the back of the material and the entire surface is smooth
A veneer that is thinner than the veneer veneer,
A step of polymerizing and bonding in parallel with the fiber direction of the layer board material .