JP2015193149A - Method of manufacturing woody member, and woody member - Google Patents

Method of manufacturing woody member, and woody member Download PDF

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JP2015193149A
JP2015193149A JP2014072454A JP2014072454A JP2015193149A JP 2015193149 A JP2015193149 A JP 2015193149A JP 2014072454 A JP2014072454 A JP 2014072454A JP 2014072454 A JP2014072454 A JP 2014072454A JP 2015193149 A JP2015193149 A JP 2015193149A
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wooden
laser
minimum processing
surface layer
substrate
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吉田 徳雄
Tokuo Yoshida
徳雄 吉田
新開 弘一
Koichi Shinkai
弘一 新開
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Panasonic Intellectual Property Management Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a woody member, which enables a groove with a predetermined depth to be easily formed in a plate material comprising a wooden base material and a surface layer, without use of a cutting tool, and the woody member.SOLUTION: A method of manufacturing a woody member 1 includes a step of forming a groove 5 on a second surface 32, in a plate material 2 comprising a plate-like woody base material 1 with a first surface 31 and the second surface 32, and a surface layer 4 for coating the first surface 31. The groove 5 is formed by irradiating the second surface 32 with laser light in such a manner that the laser light does not pass through the surface layer 4.

Description

本発明は、木質部材の製造方法及び木質部材、より詳細には溝を有する木質部材の製造方法及び溝を有する木質部材に関するものである。   The present invention relates to a method for manufacturing a wooden member and a wooden member, and more particularly to a method for manufacturing a wooden member having a groove and a wooden member having a groove.

従来、V溝を有する板状の木質部材を、このV溝に沿って折り曲げて角を形成し、家具、建材などのコーナーや周り縁等の表面化粧材として使用している。このような木質部材を製造する方法として、木製合板などの基板にプラスチックシートを貼着した化粧板を用意し、Vカッターを用いて、化粧板を切削加工してV溝を形成する方法が提案されている(特許文献1参照)。   Conventionally, a plate-like wooden member having a V-groove is bent along the V-groove to form a corner, and is used as a surface decorative material for corners and surrounding edges of furniture and building materials. As a method for manufacturing such a wood member, a method is proposed in which a decorative board in which a plastic sheet is attached to a substrate such as a wooden plywood is prepared, and a V groove is formed by cutting the decorative board using a V cutter. (See Patent Document 1).

特開昭59−114014号公報JP 59-1114014 A

しかし、特許文献1に記載された方法では、V溝を形成するための切削加工の際に、Vカッターやルーター等の切削工具がプラスチックシートに達すると、プラスチックシートが破損してしまうおそれがある。   However, in the method described in Patent Document 1, when a cutting tool such as a V cutter or a router reaches the plastic sheet during the cutting process for forming the V groove, the plastic sheet may be damaged. .

また、基板が木質材料から形成されている場合、含水率のばらつきや木目によって、基板の切削されやすさにばらつきが生じやすい。そのため、溝の深さを一定に形成することが困難であるという問題があった。   In addition, when the substrate is made of a wood material, the substrate is likely to be easily cut due to variations in moisture content or grain. For this reason, there is a problem that it is difficult to form the groove with a constant depth.

さらに、Vカッターやルーター等の切削工具を用いて切削加工する場合、刃の固定などの調整に時間がかかる。また、使用後は、刃先の研磨等のメンテナンスが必要となり、煩雑な手間がかかる。   Further, when cutting is performed using a cutting tool such as a V-cutter or a router, it takes time to adjust the fixing of the blade. In addition, after use, maintenance such as polishing of the blade edge is required, which is troublesome.

本発明は上記の点に鑑みてなされたものであり、切削工具を用いずに、木質基材と表面層とを備える板材に、所定の深さの溝を容易に形成することができる木質部材の製造方法及び木質部材を提供することを目的とする。   The present invention has been made in view of the above points, and without using a cutting tool, a wooden member capable of easily forming a groove having a predetermined depth in a plate material including a wooden substrate and a surface layer. An object of the present invention is to provide a manufacturing method and a wooden member.

本発明に係る木質部材の製造方法は、第一面及び第二面を備える板状の木質基材と、前記第一面を覆う表面層とを備える板材に、前記第二面で開口する溝を形成する工程を含む木質部材の製造方法であって、
前記第二面にレーザを、このレーザが前記表面層を貫通しないように照射することで、前記溝を形成することを特徴とするものである。
The manufacturing method of the wooden member which concerns on this invention is a groove | channel opened on said 2nd surface in the board | plate material provided with the plate-shaped wooden base material provided with a 1st surface and a 2nd surface, and the surface layer which covers said 1st surface. A method for manufacturing a wooden member including a step of forming
The groove is formed by irradiating the second surface with a laser so that the laser does not penetrate the surface layer.

上記の木質部材の製造方法では、前記表面層の最小の加工エネルギーは、前記木質基材の最小の加工エネルギーよりも大きく、
前記レーザのエネルギーは、前記木質基材の最小の加工エネルギー以上であり、前記表面層の最小の加工エネルギーよりも小さいことが好ましい。
In the manufacturing method of the wooden member, the minimum processing energy of the surface layer is larger than the minimum processing energy of the wooden substrate,
The energy of the laser is preferably equal to or greater than the minimum processing energy of the wood substrate and smaller than the minimum processing energy of the surface layer.

上記の木質部材の製造方法では、前記板材は、前記木質基材と前記表面層との間に接着層を備え、
前記接着層の最小の加工エネルギーは、前記木質基材の最小の加工エネルギーよりも大きく、
前記レーザのエネルギーは、前記木質基材の最小の加工エネルギー以上であり、前記接着層の最小の加工エネルギーよりも小さいことが好ましい。
In the manufacturing method of the wooden member, the plate member includes an adhesive layer between the wooden base material and the surface layer,
The minimum processing energy of the adhesive layer is greater than the minimum processing energy of the wood substrate,
The energy of the laser is preferably equal to or higher than the minimum processing energy of the wood substrate and smaller than the minimum processing energy of the adhesive layer.

上記の木質部材の製造方法では、前記板材は、前記木質基材と前記表面層との間に保護層を備え、
前記第二面における前記保護層と重なる位置に、前記レーザを照射し、
前記保護層の最小の加工エネルギーは、前記木質基材の最小の加工エネルギーよりも大きく、
前記レーザのエネルギーは、前記木質基材の最小の加工エネルギー以上であり、前記保護層の最小の加工エネルギーよりも小さいことが好ましい。
In the manufacturing method of the wooden member, the plate member includes a protective layer between the wooden substrate and the surface layer,
Irradiating the laser to a position overlapping the protective layer on the second surface,
The minimum processing energy of the protective layer is greater than the minimum processing energy of the wooden substrate,
The energy of the laser is preferably equal to or higher than the minimum processing energy of the wood substrate and smaller than the minimum processing energy of the protective layer.

上記の木質部材の製造方法では、前記レーザの照射中、前記表面層を冷却することが好ましい。   In the method for manufacturing a wood member, it is preferable that the surface layer is cooled during the laser irradiation.

本発明に係る木質部材は、第一面及び第二面を備える板状の木質基材と、前記第一面を覆う表面層と、前記木質基材と前記表面層との間にある保護層と、前記第二面の前記保護層と重なる位置で開口する溝とを備え、
前記保護層の発火点は、前記木質基材の発火点よりも高いことを特徴とするものである。
The wooden member according to the present invention includes a plate-shaped wooden substrate having a first surface and a second surface, a surface layer covering the first surface, and a protective layer between the wooden substrate and the surface layer. And a groove that opens at a position overlapping the protective layer on the second surface,
The ignition point of the protective layer is higher than the ignition point of the wooden substrate.

本発明によれば、切削工具を用いずに、木質基材と表面層とを備える板材に、所定の深さの溝を容易に形成することができる。   ADVANTAGE OF THE INVENTION According to this invention, the groove | channel of predetermined depth can be easily formed in the board | plate material provided with a wooden base material and a surface layer, without using a cutting tool.

図1A、図1B、図1Cは、本発明の第一の実施形態に係る木質部材の製造方法を示す断面図である。FIG. 1A, FIG. 1B, and FIG. 1C are sectional views showing a method for manufacturing a wooden member according to the first embodiment of the present invention. 図2Aは木質部材の一例を示す斜視図であり、図2Bは図2Aの木質部材の使用時の側面図である。FIG. 2A is a perspective view showing an example of a wooden member, and FIG. 2B is a side view when the wooden member of FIG. 2A is used. 図3A、図3B、図3Cは、本発明の第二の実施形態に係る木質部材の製造方法を示す断面図である。3A, 3B, and 3C are cross-sectional views illustrating a method for manufacturing a wooden member according to a second embodiment of the present invention. 図4A、図4B、図4Cは、本発明の第三の実施形態に係る木質部材の製造方法を示す断面図である。4A, 4B, and 4C are cross-sectional views illustrating a method for manufacturing a wooden member according to a third embodiment of the present invention. 図5A、図5Bは、本発明の第一の実施形態に係る木質基材の一例を示す写真である。5A and 5B are photographs showing an example of a wooden substrate according to the first embodiment of the present invention.

以下、本発明の実施の形態を説明する。
(第一の実施形態)
図1Cに、第一の実施形態に係る製造方法で得られた木質部材1の一例を示す。木質部材1は、第一面31及び第二面32を備える板状の木質基材3と、第一面31を覆う表面層4と、第二面32で開口する溝5とを備える。表面層4は木質基材3の第一面31の全面に設けられていてよい。溝5の底部6では、表面層4が露出していてもよく、底部6が木質基材3にあり表面層4に達していなくてもよい。溝5の深さは、木質基材3の厚みと同じであってもよく、木質基材3の厚みよりも浅くてもよい。
Embodiments of the present invention will be described below.
(First embodiment)
FIG. 1C shows an example of the wooden member 1 obtained by the manufacturing method according to the first embodiment. The wooden member 1 includes a plate-shaped wooden substrate 3 having a first surface 31 and a second surface 32, a surface layer 4 that covers the first surface 31, and a groove 5 that opens on the second surface 32. The surface layer 4 may be provided on the entire first surface 31 of the wooden substrate 3. At the bottom 6 of the groove 5, the surface layer 4 may be exposed, or the bottom 6 may be on the wooden substrate 3 and not reach the surface layer 4. The depth of the groove 5 may be the same as the thickness of the wooden substrate 3 or may be shallower than the thickness of the wooden substrate 3.

図1A〜図1Cに、第一の実施形態に係る製造方法の一例を示す。第一の実施形態に係る製造方法は、第一面31及び第二面32を備える板状の木質基材3と、第一面31を覆う表面層4とを備える板材2に、第二面32で開口する溝5を形成する工程を含む。第二面32にレーザを、このレーザが表面層4を貫通しないように照射することで、溝5を形成する。   1A to 1C show an example of the manufacturing method according to the first embodiment. The manufacturing method according to the first embodiment includes a plate-like wooden substrate 3 having a first surface 31 and a second surface 32, and a plate material 2 having a surface layer 4 covering the first surface 31. A step of forming a groove 5 opening at 32. The groove 5 is formed by irradiating the second surface 32 with a laser so that the laser does not penetrate the surface layer 4.

第一の実施形態では、まず、図1Aのように、第一面31及び第二面32を備える板状の木質基材3と、第一面31を覆う表面層4とを備える板材2を用意する。板材2は、例えば、木質基材3と表面層4とを接着剤で接着することにより、形成することができる。   In the first embodiment, first, as shown in FIG. 1A, a plate material 2 including a plate-like woody base material 3 including a first surface 31 and a second surface 32 and a surface layer 4 covering the first surface 31. prepare. The board | plate material 2 can be formed by adhere | attaching the wooden base material 3 and the surface layer 4 with an adhesive agent, for example.

次に、図1Bのように、第二面32にレーザを照射すると共に、第二面32上のレーザの照射位置を移動させることで、溝5を形成する。レーザは、表面層4を貫通しないように照射する。板材2にレーザを照射すると、板材2を溶融及び蒸発させて、溝5を形成することができる。レーザを用いることで、板材2に、所定の深さの溝5を容易に形成することができる。   Next, as shown in FIG. 1B, the second surface 32 is irradiated with laser, and the laser irradiation position on the second surface 32 is moved to form the groove 5. The laser is irradiated so as not to penetrate the surface layer 4. When the plate material 2 is irradiated with a laser, the plate material 2 can be melted and evaporated to form the grooves 5. By using a laser, the groove 5 having a predetermined depth can be easily formed in the plate 2.

木質基材3の材料としては、木質系材料が挙げられる。木質系材料としては、例えば、木材、集成材、合板、パーティクルボード、中比重繊維板(MediumDensity Fiberboard、MDF)等の木質繊維板などが挙げられる。木質基材3の材料は、合成樹脂材料に木粉や無機フィラーなどを含有させた複合材を、板状に加工した木質系材料でもよい。木質基材3の厚みは、例えば、1〜10mmの範囲内である。   An example of the material of the wooden substrate 3 is a wooden material. Examples of the wood-based material include wood fiber boards such as wood, laminated wood, plywood, particle board, medium density fiber board (MDF), and the like. The material of the wood substrate 3 may be a wood material obtained by processing a composite material in which a synthetic resin material contains wood powder, an inorganic filler, or the like into a plate shape. The thickness of the wooden substrate 3 is in the range of 1 to 10 mm, for example.

レーザは適宜選択され、例えば、COレーザが挙げられる。木質基材3の材料である木質系材料は、COレーザの吸収率が高い。そのため、COレーザである場合、木質基材3におけるレーザの反射及び透過が低減され、レーザ加工の効率が向上する。 The laser is appropriately selected, and examples thereof include a CO 2 laser. The wood material which is the material of the wood substrate 3 has a high CO 2 laser absorption rate. Therefore, in the case of a CO 2 laser, the reflection and transmission of the laser beam on the wooden substrate 3 are reduced, and the efficiency of laser processing is improved.

表面層4としては、例えば、シート状の化粧用の材料が挙げられる。第一の実施形態では、表面層4の最小の加工エネルギーは、木質基材3の最小の加工エネルギーよりも大きいことが好ましい。本明細書では、ある材料の加工エネルギーとは、その材料をレーザ加工することができるレーザのエネルギーを意味する。また、本明細書では、材料の最小の加工エネルギーとは、その材料をレーザ加工することができるレーザのエネルギーの最小値を意味する。なお、レーザ加工とは、ある材料にレーザを照射することで、その材料を熔融及び蒸発させることである。   Examples of the surface layer 4 include a sheet-like cosmetic material. In the first embodiment, the minimum processing energy of the surface layer 4 is preferably larger than the minimum processing energy of the wooden substrate 3. In this specification, the processing energy of a material means the energy of a laser capable of laser processing the material. In this specification, the minimum processing energy of a material means the minimum value of the energy of a laser that can laser process the material. The laser processing is to melt and evaporate a material by irradiating the material with a laser.

本明細書では、木質基材3内に、最小の加工エネルギーのばらつきが存在する場合、木質基材3の最小の加工エネルギーは、木質基材3内の最小の加工エネルギーの最大値で規定する。木質基材3内に、最小の加工エネルギーのばらつきが存在する場合とは、1枚の木質基材3において、場所によって最小の加工エネルギーが異なる場合である。場所によって最小の加工エネルギーが異なる1枚の木質基材3において、最小の加工エネルギーが最も高い場所の値が、その木質基材3の最小の加工エネルギーである。木質基材3内に、最小の加工エネルギーのばらつきが存在する木質基材3としては、例えば、含水率が異なっている部分があったり、木目がある木質系材料が挙げられる。木質基材3の最小の加工エネルギーとは、含水率や木目等の影響を受けずに、木質基材3を加工することができる最小の加工エネルギーともいえる。   In the present specification, when there is a minimum processing energy variation in the wood base material 3, the minimum processing energy of the wood base material 3 is defined by the maximum value of the minimum processing energy in the wood base material 3. . The case where the minimum processing energy variation exists in the wooden base material 3 is a case where the minimum processing energy varies depending on the location in one wooden base material 3. The value of the place where the minimum processing energy is the highest in one wooden base material 3 having the minimum processing energy depending on the location is the minimum processing energy of the wooden base material 3. Examples of the wood base material 3 in which the variation in the minimum processing energy exists in the wood base material 3 include a part having a different moisture content or a wood type material having a grain. The minimum processing energy of the wooden substrate 3 can be said to be the minimum processing energy that can process the wooden substrate 3 without being affected by the moisture content, grain, or the like.

木質基材3の最小の加工エネルギーと表面層4の最小の加工エネルギーの差は、木質基材3の厚み、レーザの種類等に応じて、適宜設定される。例えば、木質基材3の厚みは、厚ければ厚いほど、レーザ加工で生じる熱が放熱されにくくなり、木質基材3に熱が蓄積されやすくなる。木質基材3に熱が蓄積されると、木質基材3と表面層4との境界において、表面層4の温度が上昇しやすくなる。よって、木質基材3の厚みが厚いほど、木質基材3の最小の加工エネルギーと表面層4の最小の加工エネルギーの差は大きくすることが好ましい。また、例えば、レーザは、パルス幅が長ければ長いほど、木質基材3のレーザ照射部分の周囲にレーザの熱が伝わりやすくなる。レーザの熱が伝わりやすい場合、木質基材3と表面層4との境界において、表面層4に熱が伝わりやすくなる。よって、レーザのパルス幅が長ければ長いほど、木質基材3の最小の加工エネルギーと表面層4の最小の加工エネルギーの差は大きくすることが好ましい。   The difference between the minimum processing energy of the wooden substrate 3 and the minimum processing energy of the surface layer 4 is appropriately set according to the thickness of the wooden substrate 3, the type of laser, and the like. For example, as the thickness of the wooden base material 3 increases, heat generated by laser processing is less likely to be dissipated and heat is more likely to accumulate in the wooden base material 3. When heat is accumulated in the wooden substrate 3, the temperature of the surface layer 4 easily rises at the boundary between the wooden substrate 3 and the surface layer 4. Therefore, it is preferable that the difference between the minimum processing energy of the wooden base material 3 and the minimum processing energy of the surface layer 4 increases as the thickness of the wooden base material 3 increases. Further, for example, the longer the pulse width of the laser, the easier it is for the heat of the laser to be transmitted around the laser irradiated portion of the wooden substrate 3. When the heat of the laser is easily transmitted, the heat is easily transmitted to the surface layer 4 at the boundary between the wooden substrate 3 and the surface layer 4. Therefore, the longer the laser pulse width, the greater the difference between the minimum processing energy of the wood substrate 3 and the minimum processing energy of the surface layer 4.

木質基材3よりも最小の加工エネルギーが大きい材料としては、木質基材3よりも発火点が高い材料が挙げられる。木質基材3よりも発火点が高い材料として、例えば、紙、布が挙げられる。具体的には、木質基材3の材料が、発火点が250℃である木材である場合、表面層4としては、発火点が250℃よりも高い材料を選択することができる。発火点が250℃よりも高い材料としては、例えば、発火点450℃程度の模造紙や、発火点500℃程度の木綿や、発火点350〜450℃のポリエチレン(PE)、発火点300〜440℃のポリプロピレンが挙げられる。   Examples of the material having a minimum processing energy larger than that of the wooden substrate 3 include materials having a higher ignition point than the wooden substrate 3. Examples of the material having a higher ignition point than the wooden base material 3 include paper and cloth. Specifically, when the material of the wooden substrate 3 is wood having an ignition point of 250 ° C., a material having an ignition point higher than 250 ° C. can be selected as the surface layer 4. Examples of the material having an ignition point higher than 250 ° C include, for example, imitation paper having an ignition point of about 450 ° C, cotton having an ignition point of about 500 ° C, polyethylene (PE) having an ignition point of 350 to 450 ° C, and an ignition point of 300 to 440. Polypropylene at 0 ° C. can be mentioned.

また、第一の実施形態では、レーザのエネルギーは、木質基材3の最小の加工エネルギー以上であり、表面層4の最小の加工エネルギーよりも小さいことが好ましい。本明細書では、レーザのエネルギーは、板材2に照射中のレーザのエネルギーを意味する。   In the first embodiment, the energy of the laser is preferably equal to or higher than the minimum processing energy of the wooden substrate 3 and smaller than the minimum processing energy of the surface layer 4. In this specification, the energy of the laser means the energy of the laser that is irradiating the plate 2.

表面層4の最小の加工エネルギーを、木質基材3の最小の加工エネルギーよりも大きくすると共に、レーザのエネルギーを上記の範囲内にすることにより、レーザ加工を、木質基材3と表面層4の境界で停止させやすくなる。このため、木質基材3をレーザ加工すると共に、表面層4をレーザ加工しないようにすることができ、レーザが表面層4を貫通せずに溝5を形成しやすくなる。また、深さが一定の溝5を形成しやすくなる。   By making the minimum processing energy of the surface layer 4 larger than the minimum processing energy of the wood base material 3 and making the energy of the laser within the above range, the laser processing is performed by the wood base material 3 and the surface layer 4. It becomes easy to stop at the boundary. For this reason, the wood substrate 3 can be laser processed and the surface layer 4 can be prevented from being laser processed, so that the laser beam can be easily formed without penetrating the surface layer 4. Moreover, it becomes easy to form the groove 5 having a constant depth.

図1Bのように、レーザの照射中、表面層4を冷却することが好ましい。すなわち、溝5を形成する際、表面層4を冷却しながら板材2をレーザ加工することが好ましい。表面層4のうち、溝5を形成する箇所と重なる部分が、少なくとも冷却されていることが好ましい。溝5を形成する箇所と重なる部分とは、平面視において溝5を形成する箇所と重なる部分である。本明細書では、平面視とは、木質部材1の厚み方向に見ることを意味する。   As shown in FIG. 1B, the surface layer 4 is preferably cooled during laser irradiation. That is, when forming the groove 5, it is preferable to laser-process the plate member 2 while cooling the surface layer 4. It is preferable that at least a portion of the surface layer 4 that overlaps with a portion where the groove 5 is formed is cooled. The portion that overlaps with the portion where the groove 5 is formed is a portion that overlaps with the portion where the groove 5 is formed in plan view. In this specification, the plan view means viewing in the thickness direction of the wooden member 1.

表面層4を冷却する方法としては、例えば、図1Bのように表面層4に冷却プレート9を接触させる方法、及び表面層4に冷風を吹きつける方法(図示せず)が挙げられる。冷却プレート9としては、例えば、銅板、及び水冷式の放熱板が挙げられる。レーザ照射中に、表面層4が冷却されていることにより、表面層4の温度が上昇しにくくなり、表面層4がよりレーザ加工されにくくなる。レーザ照射後に、冷却を停止し、図1Cのような木質部材1が得られる。   Examples of the method for cooling the surface layer 4 include a method of bringing the cooling plate 9 into contact with the surface layer 4 as shown in FIG. 1B and a method of blowing cool air to the surface layer 4 (not shown). Examples of the cooling plate 9 include a copper plate and a water-cooled heat radiating plate. Since the surface layer 4 is cooled during laser irradiation, the temperature of the surface layer 4 is unlikely to rise, and the surface layer 4 is more difficult to be laser processed. After the laser irradiation, the cooling is stopped, and the wood member 1 as shown in FIG. 1C is obtained.

表面層4の厚みは、0.01〜1mmの範囲内であることが好ましい。この範囲であれば、溝5に沿って、木質部材1を折り曲げやすくすることができる。   The thickness of the surface layer 4 is preferably in the range of 0.01 to 1 mm. Within this range, the wooden member 1 can be easily bent along the groove 5.

第一の実施形態に係る製造方法により、図2Aのような、木質部材1が得られる。溝5の断面形状は、適宜設定され、例えば、図1Cのように、台形などの矩形状であってよく、図2Aのように三角形状や、弧状であってもよい。溝5の底部6は、面状であっても、線状であってもよい。また、複数の溝5が、溝5の長手方向と直交する方向に連なることで溝5の集合体を形成していてもよい。この場合でも、図2Bのように、溝5の集合体に沿って、木質部材1を折り曲げることができる。なお、溝5の断面形状とは、溝5自体の長手方向に直交する断面の形状をいう。   The wooden member 1 as shown in FIG. 2A is obtained by the manufacturing method according to the first embodiment. The cross-sectional shape of the groove 5 is appropriately set, and may be, for example, a rectangular shape such as a trapezoid as shown in FIG. 1C, or may be a triangular shape or an arc shape as shown in FIG. 2A. The bottom 6 of the groove 5 may be planar or linear. The plurality of grooves 5 may be continuous in a direction orthogonal to the longitudinal direction of the grooves 5 to form an aggregate of the grooves 5. Even in this case, the wood member 1 can be bent along the aggregate of the grooves 5 as shown in FIG. 2B. In addition, the cross-sectional shape of the groove | channel 5 means the shape of the cross section orthogonal to the longitudinal direction of the groove | channel 5 itself.

図2Bのように、木質部材1は、溝5に沿って折り曲げられ、例えば、芯材10のコーナー等の表面化粧材として使用される。レーザ加工により、木質部材1の溝5及びその周辺が焼けて変色することがあるが、使用時には変色した箇所は内側にあるので、外側からは見えず、外観を損なうおそれはない。
(第二の実施形態)
図3Cに、第二の実施形態に係る製造方法で得られた木質部材1aの一例を示す。木質部材1aは、第一面31a及び第二面32aを備える板状の木質基材3aと、第一面31aを覆う表面層4aと、第二面32aで開口する溝5aとを備える。木質部材1aは、木質基材3aと表面層4aとの間に接着層7を備える。表面層4a及び接着層7は、木質基材3aの第一面31aの全面に設けられていてよい。溝5aの底部6aでは、接着層7が露出していてもよく、底部6aが木質基材3aにあり接着層7に達していなくてもよい。溝5aの深さは、木質基材3aの厚みと同じであってもよく、木質基材3aの厚みよりも浅くてもよい。
As shown in FIG. 2B, the wooden member 1 is bent along the groove 5 and used as a surface decorative material such as a corner of the core member 10. Although the groove 5 of the wooden member 1 and the periphery thereof may be burnt and discolored by laser processing, the discolored portion is on the inner side during use, so that it cannot be seen from the outer side and there is no possibility of damaging the appearance.
(Second embodiment)
FIG. 3C shows an example of the wooden member 1a obtained by the manufacturing method according to the second embodiment. The wooden member 1a includes a plate-like wooden base material 3a having a first surface 31a and a second surface 32a, a surface layer 4a covering the first surface 31a, and a groove 5a opened at the second surface 32a. The wooden member 1a includes an adhesive layer 7 between the wooden substrate 3a and the surface layer 4a. The surface layer 4a and the adhesive layer 7 may be provided on the entire first surface 31a of the wooden substrate 3a. At the bottom portion 6a of the groove 5a, the adhesive layer 7 may be exposed, or the bottom portion 6a does not have to reach the adhesive layer 7 on the wooden base material 3a. The depth of the groove 5a may be the same as the thickness of the wooden substrate 3a, or may be shallower than the thickness of the wooden substrate 3a.

図3A〜図3Cに、第二の実施形態に係る製造方法の一例を示す。第二の実施形態に係る製造方法は、第一面31a及び第二面32aを備える板状の木質基材3aと、第一面31aを覆う表面層4aとを備える板材2aに、第二面32aで開口する溝5aを形成する工程を含む。第二面32aにレーザを、このレーザが表面層4aを貫通しないように照射することで、溝5aを形成する。第二の実施形態では、板材2aは、木質基材3aと表面層4aとの間に接着層7を備える。   3A to 3C show an example of the manufacturing method according to the second embodiment. In the manufacturing method according to the second embodiment, a plate-like wooden substrate 3a having a first surface 31a and a second surface 32a, and a plate material 2a having a surface layer 4a covering the first surface 31a, a second surface Forming a groove 5a opened at 32a. The groove 5a is formed by irradiating the second surface 32a with laser so that the laser does not penetrate the surface layer 4a. In 2nd embodiment, the board | plate material 2a is equipped with the contact bonding layer 7 between the wooden base material 3a and the surface layer 4a.

第二の実施形態では、まず、図3Aのように、第一面31a及び第二面32aを備える板状の木質基材3aと、第一面31aを覆う表面層4aと、木質基材3aと表面層4aとの間に接着層7とを備える板材2aを用意する。接着層7は、木質基材3aと表面層4aとを接着するための層である。板材2aは、木質基材3aと表面層4aとを、接着層7で接着することにより、形成することができる。   In 2nd embodiment, first, like FIG. 3A, the plate-shaped wooden base material 3a provided with the 1st surface 31a and the 2nd surface 32a, the surface layer 4a which covers the 1st surface 31a, and the wooden base material 3a A plate material 2a having an adhesive layer 7 between the surface layer 4a and the surface layer 4a is prepared. The adhesive layer 7 is a layer for adhering the wood substrate 3a and the surface layer 4a. The plate material 2a can be formed by bonding the wood base 3a and the surface layer 4a with the adhesive layer 7.

次に、図3Bのように、第二面32aにレーザを照射すると共に、第二面32a上のレーザ照射位置を移動させることで、溝5aを形成する。図3Bのように、レーザの照射中、表面層4aを冷却していることが好ましい。表面層4aを冷却する方法としては、第一の実施形態と同様の方法が挙げられ、例えば、表面層4aに冷却プレート9aを接触させる方法である。表面層4aを冷却することにより、接着層7も冷却することができる。レーザ照射中に、接着層7が冷却されていることにより、接着層7の温度が上昇しにくくなることで、接着層7がよりレーザ加工されにくくなる。レーザ照射後に、冷却を停止し、図3Cのような木質部材1が得られる。   Next, as shown in FIG. 3B, the second surface 32a is irradiated with laser, and the laser irradiation position on the second surface 32a is moved to form the groove 5a. As shown in FIG. 3B, the surface layer 4a is preferably cooled during laser irradiation. Examples of the method for cooling the surface layer 4a include the same method as in the first embodiment. For example, the surface layer 4a is brought into contact with the cooling plate 9a. The adhesive layer 7 can also be cooled by cooling the surface layer 4a. Since the adhesive layer 7 is cooled during the laser irradiation, the temperature of the adhesive layer 7 is hardly increased, and thus the adhesive layer 7 is more difficult to be laser processed. After the laser irradiation, the cooling is stopped, and the wood member 1 as shown in FIG. 3C is obtained.

第二の実施形態では、接着層7の最小の加工エネルギーは、木質基材3aの最小の加工エネルギーよりも大きい。また、第二の実施形態では、レーザのエネルギーは、木質基材3aの最小の加工エネルギー以上であり、接着層7の最小の加工エネルギーよりも小さい。接着層7の最小の加工エネルギーを木質基材3よりも大きくすると共に、レーザのエネルギーを上記の範囲内にすることにより、レーザ加工を、木質基材3aと接着層7の境界で停止させやすくなる。このため、木質基材3aをレーザ加工すると共に、接着層7をレーザ加工しないようにすることができ、レーザが表面層4aを貫通せずに溝5aを形成しやすくなる。また、深さが一定の溝5aを形成しやすくなる。   In the second embodiment, the minimum processing energy of the adhesive layer 7 is larger than the minimum processing energy of the wooden substrate 3a. Moreover, in 2nd embodiment, the energy of a laser is more than the minimum processing energy of the wooden base material 3a, and is smaller than the minimum processing energy of the contact bonding layer 7. FIG. By making the minimum processing energy of the adhesive layer 7 larger than that of the wood base material 3 and making the laser energy within the above range, laser processing can be easily stopped at the boundary between the wood base material 3 a and the adhesive layer 7. Become. For this reason, the wood substrate 3a can be laser processed and the adhesive layer 7 can be prevented from laser processing, and the laser can easily form the groove 5a without penetrating the surface layer 4a. Moreover, it becomes easy to form the groove 5a having a constant depth.

木質基材3aの最小の加工エネルギーと接着層7の最小の加工エネルギーの差は、木質基材3aの厚み、レーザの種類等に応じて、適宜設定される。例えば、木質基材3aの厚みが厚いほど、木質基材3aの最小の加工エネルギーと接着層7の最小の加工エネルギーの差は大きくすることが好ましい。また、例えば、レーザのパルス幅が長ければ長いほど、木質基材3aの最小の加工エネルギーと接着層7の最小の加工エネルギーの差は大きくすることが好ましい。   The difference between the minimum processing energy of the wooden substrate 3a and the minimum processing energy of the adhesive layer 7 is appropriately set according to the thickness of the wooden substrate 3a, the type of laser, and the like. For example, it is preferable that the difference between the minimum processing energy of the wooden base material 3a and the minimum processing energy of the adhesive layer 7 increases as the thickness of the wooden base material 3a increases. For example, the longer the pulse width of the laser, the larger the difference between the minimum processing energy of the wooden substrate 3a and the minimum processing energy of the adhesive layer 7.

接着層7の材料としては、最小の加工エネルギーが木質基材3aよりも大きい接着剤が挙げられる。最小の加工エネルギーが木質基材3aよりも大きい接着剤を形成する材料としては、例えば、発火点が木質基材3aよりも高い材料が挙げられる。発火点が木質基材3aよりも高い材料としては、例えば、エポキシ樹脂が挙げられる。一般的に、エポキシ樹脂は、発火点が530〜540℃程度であるため、木質基材3aよりも発火点が高い。接着層7の厚みは、例えば、0.01〜1mmの範囲内である。   Examples of the material of the adhesive layer 7 include an adhesive having a minimum processing energy larger than that of the wood substrate 3a. Examples of a material that forms an adhesive having a minimum processing energy larger than that of the wooden substrate 3a include a material having a higher ignition point than that of the wooden substrate 3a. As a material whose ignition point is higher than that of the wooden substrate 3a, for example, an epoxy resin can be cited. Generally, since an epoxy resin has an ignition point of about 530 to 540 ° C., the ignition point is higher than that of the wooden base material 3a. The thickness of the adhesive layer 7 is, for example, in the range of 0.01 to 1 mm.

第二の実施形態では、表面層4aの最小の加工エネルギーは、木質基材3aよりも大きく、レーザのエネルギーよりも大きいことが好ましい。これにより、もし仮に接着層7の厚みが一定でなく、薄くなっている部分があり、レーザが接着層7を貫通した場合であっても、表面層4aを貫通せずに、溝5aを形成しやすくなる。木質基材3aよりも最小の加工エネルギーが大きい表面層4aの材料としては、第一の実施形態の表面層4と同様の材料が挙げられる。
(第三の実施形態)
図4Cに、第三の実施形態に係る製造方法で得られた木質部材1bの一例を示す。木質部材1bは、第一面31b及び第二面32bを備える板状の木質基材3bと、第一面31bを覆う表面層4bと、木質基材3bと表面層4bとの間にある保護層8と、第二面32bの保護層8と重なる位置で開口する溝5bとを有する。表面層4bは木質基材3bの第一面31bの全面に設けられていてよい。溝5bの底部6bでは、保護層8が露出していてもよく、底部6bが木質基材3bにあり保護層8に達していなくてもよい。溝5bの深さは、木質基材3bの厚みと同じであってもよく、木質基材3bの厚みよりも浅くてもよい。
In 2nd embodiment, it is preferable that the minimum processing energy of the surface layer 4a is larger than the wooden base material 3a, and larger than the energy of a laser. Thereby, if the thickness of the adhesive layer 7 is not constant and there is a thinned portion, even if the laser penetrates the adhesive layer 7, the groove 5a is formed without penetrating the surface layer 4a. It becomes easy to do. Examples of the material of the surface layer 4a having a minimum processing energy larger than that of the wooden substrate 3a include the same materials as those of the surface layer 4 of the first embodiment.
(Third embodiment)
FIG. 4C shows an example of the wooden member 1b obtained by the manufacturing method according to the third embodiment. The wooden member 1b includes a plate-shaped wooden substrate 3b having a first surface 31b and a second surface 32b, a surface layer 4b covering the first surface 31b, and a protection between the wooden substrate 3b and the surface layer 4b. It has the layer 8 and the groove | channel 5b opened in the position which overlaps with the protective layer 8 of the 2nd surface 32b. The surface layer 4b may be provided on the entire first surface 31b of the wooden substrate 3b. At the bottom 6b of the groove 5b, the protective layer 8 may be exposed, or the bottom 6b may be on the wooden substrate 3b and not reach the protective layer 8. The depth of the groove 5b may be the same as the thickness of the wooden substrate 3b, or may be shallower than the thickness of the wooden substrate 3b.

図4A〜図4Cに、第三の実施形態に係る製造方法の一例を示す。第三の実施形態に係る製造方法は、第一面31b及び第二面32bを備える板状の木質基材3bと、第一面31bを覆う表面層4bとを備える板材2bに、第二面32bで開口する溝5bを形成する工程を含む。第二面32bにレーザを、このレーザが表面層4bを貫通しないように照射することで、溝5bを形成する。第三の実施形態では、板材2は、木質基材3と表面層4との間に保護層8を備える。   4A to 4C show an example of the manufacturing method according to the third embodiment. In the manufacturing method according to the third embodiment, a plate-like wooden substrate 3b having a first surface 31b and a second surface 32b, and a plate material 2b having a surface layer 4b covering the first surface 31b, a second surface Forming a groove 5b opened at 32b. The groove 5b is formed by irradiating the second surface 32b with a laser so that the laser does not penetrate the surface layer 4b. In the third embodiment, the plate member 2 includes a protective layer 8 between the wooden substrate 3 and the surface layer 4.

第三の実施形態では、まず、図4Aのように、第一面31b及び第二面32bを備える板状の木質基材3bと、第一面31bを覆う表面層4bと、木質基材3bと表面層4bとの間に保護層8とを備える板材2bを用意する。板材2bは、例えば、木質基材3bと保護層8と表面層4bとを接着剤で接着することにより、形成することができる。   In 3rd embodiment, first, like FIG. 4A, the plate-shaped wooden base material 3b provided with the 1st surface 31b and the 2nd surface 32b, the surface layer 4b which covers the 1st surface 31b, and the wooden base material 3b A plate material 2b having a protective layer 8 between the surface layer 4b and the surface layer 4b is prepared. The board | plate material 2b can be formed by adhere | attaching the wooden base material 3b, the protective layer 8, and the surface layer 4b with an adhesive agent, for example.

次に、図4Bのように、第二面32bにレーザを照射すると共に、第二面32b上のレーザ照射位置を移動させることで、溝5bを形成する。図4Bのように、レーザの照射中、表面層4bを冷却していることが好ましい。表面層4bを冷却する方法としては、第一の実施形態と同様の方法が挙げられ、例えば、表面層4bに冷却プレート9bを接触させる方法である。表面層4bを冷却することにより、保護層8も冷却することができる。レーザ照射中に、保護層8が冷却されていることにより、保護層8の温度が上昇しにくくなり、保護層8がよりレーザ加工されにくくなる。レーザ照射後に、冷却を停止し、図4Cのような木質部材1が得られる。   Next, as shown in FIG. 4B, the second surface 32b is irradiated with laser, and the laser irradiation position on the second surface 32b is moved to form the groove 5b. As shown in FIG. 4B, the surface layer 4b is preferably cooled during laser irradiation. As a method for cooling the surface layer 4b, the same method as that of the first embodiment can be mentioned. For example, the cooling plate 9b is brought into contact with the surface layer 4b. The protective layer 8 can also be cooled by cooling the surface layer 4b. The cooling of the protective layer 8 during laser irradiation makes it difficult for the temperature of the protective layer 8 to rise, and the protective layer 8 becomes more difficult to be laser processed. After the laser irradiation, the cooling is stopped, and the wood member 1 as shown in FIG. 4C is obtained.

保護層8は、木質基材3bよりもレーザ加工されにくい層である。第三の実施形態では、保護層8の最小の加工エネルギーは、木質基材3bの最小の加工エネルギーよりも大きい。また、第三の実施形態では、レーザのエネルギーは、木質基材3bの最小の加工エネルギー以上であり、保護層8の最小の加工エネルギーよりも小さい。保護層8の最小の加工エネルギーを木質基材3bよりも大きくすると共に、レーザのエネルギーを上記の範囲内にすることにより、レーザ加工を、木質基材3bと保護層8の境界で停止させやすくなる。このため、木質基材3bをレーザ加工すると共に、保護層8をレーザ加工しないようにすることができ、レーザが表面層4bを貫通せずに溝5bを形成しやすくなる。また、深さが一定の溝5bを形成しやすくなる。   The protective layer 8 is a layer that is harder to be laser processed than the wooden substrate 3b. In the third embodiment, the minimum processing energy of the protective layer 8 is larger than the minimum processing energy of the wooden substrate 3b. In the third embodiment, the energy of the laser is equal to or higher than the minimum processing energy of the wooden substrate 3 b and is smaller than the minimum processing energy of the protective layer 8. By making the minimum processing energy of the protective layer 8 larger than that of the wooden substrate 3b and making the laser energy within the above range, laser processing can be easily stopped at the boundary between the wooden substrate 3b and the protective layer 8. Become. For this reason, the wood substrate 3b can be laser processed and the protective layer 8 can be prevented from laser processing, and the laser can easily form the groove 5b without penetrating the surface layer 4b. Moreover, it becomes easy to form the groove 5b having a constant depth.

木質基材3bの最小の加工エネルギーと保護層8の最小の加工エネルギーの差は、木質基材3bの厚み、レーザの種類等に応じて、適宜設定される。例えば、木質基材3bの厚みが厚いほど、木質基材3bの最小の加工エネルギーと保護層8の最小の加工エネルギーの差は大きくすることが好ましい。また、例えば、レーザのパルス幅が長ければ長いほど、木質基材3bの最小の加工エネルギーと保護層8の最小の加工エネルギーの差は大きくすることが好ましい。   The difference between the minimum processing energy of the wooden substrate 3b and the minimum processing energy of the protective layer 8 is appropriately set according to the thickness of the wooden substrate 3b, the type of laser, and the like. For example, it is preferable that the difference between the minimum processing energy of the wooden base material 3b and the minimum processing energy of the protective layer 8 increases as the thickness of the wooden base material 3b increases. For example, the longer the pulse width of the laser, the greater the difference between the minimum processing energy of the wooden substrate 3b and the minimum processing energy of the protective layer 8.

保護層8の材料は、例えば、木質基材3bの種類、及びレーザの種類に応じて適宜選択される。最小の加工エネルギーが木質基材3bよりも大きい材料としては、例えば、レーザの反射率が高い材料、及び発火点が木質基材3bよりも高い材料が挙げられる。レーザの反射率が高い材料としては、例えば金属が挙げられる。金属としては、例えば、銅、アルミニウム、鉄などが挙げられる。この中でも、アルミニウムがより好ましい。アルミニウムは、金属の中でもレーザの反射率が比較的高く、また、安価であるため好ましい。   The material of the protective layer 8 is appropriately selected according to, for example, the type of the wooden substrate 3b and the type of laser. Examples of the material having a minimum processing energy larger than that of the wooden substrate 3b include a material having a high laser reflectance and a material having a higher ignition point than that of the wooden substrate 3b. Examples of the material having a high laser reflectivity include metals. Examples of the metal include copper, aluminum, and iron. Among these, aluminum is more preferable. Aluminum is preferable among metals because it has a relatively high laser reflectivity and is inexpensive.

発火点が木質基材3bよりも高い材料としては、例えば、鉄及びアルミニウム等の金属、紙、布が挙げられる。具体的には、木質基材3bの材料が、発火点が250℃である木材である場合、保護層8としては、発火点が250℃よりも高い材料を選択することができる。発火点が250℃よりも高い材料としては、例えば、発火点450℃程度の模造紙や、発火点500℃程度の木綿や、発火点350〜450℃のポリエチレン、発火点300℃〜440℃のポリプロピレンが挙げられる。   Examples of the material whose ignition point is higher than that of the wooden substrate 3b include metals such as iron and aluminum, paper, and cloth. Specifically, when the material of the wooden substrate 3b is wood having an ignition point of 250 ° C., a material having an ignition point higher than 250 ° C. can be selected as the protective layer 8. Examples of materials having an ignition point higher than 250 ° C include, for example, imitation paper having an ignition point of about 450 ° C, cotton having an ignition point of about 500 ° C, polyethylene having an ignition point of 350 to 450 ° C, and an ignition point of 300 ° C to 440 ° C. A polypropylene is mentioned.

保護層8は、少なくとも溝5bが形成される箇所に設けられる。保護層8は、木質基材3bと表面層4bとの間において、平面視で、少なくとも溝5bの底部6bが形成される箇所と重なる位置に設けられることが好ましい。保護層8は、木質基材3bと表面層4bとの間において、第一面31b上の全体に渡って設けられていてもよい。保護層8の厚みは、0.01〜1mmの範囲内であることが好ましい。この範囲であれば、溝5bにおいて、木質部材1bを折り曲げやすくすることができる。   The protective layer 8 is provided at least where the groove 5b is formed. It is preferable that the protective layer 8 is provided between the wooden base material 3b and the surface layer 4b at a position overlapping at least a portion where the bottom portion 6b of the groove 5b is formed in a plan view. The protective layer 8 may be provided over the entire first surface 31b between the wooden substrate 3b and the surface layer 4b. The thickness of the protective layer 8 is preferably in the range of 0.01 to 1 mm. Within this range, the wood member 1b can be easily bent in the groove 5b.

第三の実施形態では、表面層4bの材料は、最小の加工エネルギーが木質基材3bよりも大きい材料であることが好ましい。これにより、もし仮に保護層8の厚みが一定でなく、薄くなっている部分があり、レーザが保護層8を貫通した場合であっても、表面層4bを貫通せずに、溝5bを形成しやすくなる。木質基材3bよりも最小の加工エネルギーが大きい表面層4bの材料としては、第一の実施形態の表面層4と同様の材料が挙げられる。   In the third embodiment, the material of the surface layer 4b is preferably a material having a minimum processing energy larger than that of the wood substrate 3b. Thereby, if the thickness of the protective layer 8 is not constant and there is a thinned portion, even if the laser penetrates the protective layer 8, the groove 5b is formed without penetrating the surface layer 4b. It becomes easy to do. Examples of the material of the surface layer 4b having a minimum processing energy larger than that of the wooden substrate 3b include the same materials as those of the surface layer 4 of the first embodiment.

第三の実施形態に係る製造方法により、図4Cのような木質部材1bが得られる。木質部材1bは、第一面31b及び第二面32bを備える板状の木質基材3bと、第一面31bを覆う表面層4bと、木質基材3bと表面層4bとの間にある保護層8と、第二面32bの保護層8と重なる位置で開口する溝5bとを備える。保護層8の発火点は、木質基材3bの発火点よりも高いことが好ましい。   The wood member 1b as shown in FIG. 4C is obtained by the manufacturing method according to the third embodiment. The wooden member 1b includes a plate-shaped wooden substrate 3b having a first surface 31b and a second surface 32b, a surface layer 4b covering the first surface 31b, and a protection between the wooden substrate 3b and the surface layer 4b. The layer 8 and the groove | channel 5b opened in the position which overlaps with the protective layer 8 of the 2nd surface 32b are provided. The ignition point of the protective layer 8 is preferably higher than the ignition point of the wooden substrate 3b.

以下、本発明を実施例によって具体的に説明する。   Hereinafter, the present invention will be specifically described by way of examples.

板状の木質基材として厚み2.5mmのMDF、表面層として厚み0.1mmのポリエチレン(PE)を用意した。木質基材と表面層とを接着剤で接着し、板材を形成した。前記板材に対し、エネルギー20〜50W程度のCOレーザを照射し、溝を形成した。レーザ加工は、木質基材と表面層の境界で停止し、レーザが表面層を貫通することなく溝を形成することができた。この方法によって得られた木質部材を図5A及び図5Bに示す。レーザ加工により、木質部材の溝及びその周辺が焼けて変色していた。 MDF with a thickness of 2.5 mm was prepared as a plate-like woody substrate, and polyethylene (PE) with a thickness of 0.1 mm was prepared as a surface layer. The wood substrate and the surface layer were bonded with an adhesive to form a plate material. The plate material was irradiated with a CO 2 laser having an energy of about 20 to 50 W to form a groove. The laser processing stopped at the boundary between the wooden substrate and the surface layer, and the grooves could be formed without the laser penetrating the surface layer. The wood member obtained by this method is shown in FIGS. 5A and 5B. Due to the laser processing, the groove of the wooden member and its periphery were burned and discolored.

1、1a、1b 木質部材
2、2a、2b 板材
3、3a、3b 木質基材
4、4a、4b 表面層
5、5a、5b 溝
7 接着層
8 保護層
31、31a、31b 第一面
32、32a、32b 第二面
1, 1a, 1b Wood member 2, 2a, 2b Plate material 3, 3a, 3b Wood substrate 4, 4a, 4b Surface layer 5, 5a, 5b Groove 7 Adhesive layer 8 Protective layer 31, 31a, 31b First surface 32, 32a, 32b Second side

Claims (6)

第一面及び第二面を備える板状の木質基材と、前記第一面を覆う表面層とを備える板材に、前記第二面で開口する溝を形成する工程を含む木質部材の製造方法であって、
前記第二面にレーザを、このレーザが前記表面層を貫通しないように照射することで、前記溝を形成することを特徴とする木質部材の製造方法。
A method for producing a wooden member, comprising a step of forming a groove that opens on the second surface in a plate material including a plate-shaped wooden substrate having a first surface and a second surface and a surface layer covering the first surface. Because
The method of manufacturing a wood member, wherein the groove is formed by irradiating the second surface with a laser so that the laser does not penetrate the surface layer.
前記表面層の最小の加工エネルギーは、前記木質基材の最小の加工エネルギーよりも大きく、
前記レーザのエネルギーは、前記木質基材の最小の加工エネルギー以上であり、前記表面層の最小の加工エネルギーよりも小さいことを特徴とする請求項1に記載の木質部材の製造方法。
The minimum processing energy of the surface layer is greater than the minimum processing energy of the wooden substrate,
2. The method for manufacturing a wooden member according to claim 1, wherein the energy of the laser is equal to or higher than a minimum processing energy of the wooden base material and is smaller than a minimum processing energy of the surface layer.
前記板材は、前記木質基材と前記表面層との間に接着層を備え、
前記接着層の最小の加工エネルギーは、前記木質基材の最小の加工エネルギーよりも大きく、
前記レーザのエネルギーは、前記木質基材の最小の加工エネルギー以上であり、前記接着層の最小の加工エネルギーよりも小さいことを特徴とする請求項1又は2に記載の木質部材の製造方法。
The plate material includes an adhesive layer between the wooden substrate and the surface layer,
The minimum processing energy of the adhesive layer is greater than the minimum processing energy of the wood substrate,
3. The method for manufacturing a wooden member according to claim 1, wherein the energy of the laser is equal to or greater than a minimum processing energy of the wooden base material and is smaller than a minimum processing energy of the adhesive layer.
前記板材は、前記木質基材と前記表面層との間に保護層を備え、
前記第二面における前記保護層と重なる位置に、前記レーザを照射し、
前記保護層の最小の加工エネルギーは、前記木質基材の最小の加工エネルギーよりも大きく、
前記レーザのエネルギーは、前記木質基材の最小の加工エネルギー以上であり、前記保護層の最小の加工エネルギーよりも小さいことを特徴とする請求項1乃至3のいずれか一項に記載の木質部材の製造方法。
The plate material includes a protective layer between the wooden substrate and the surface layer,
Irradiating the laser to a position overlapping the protective layer on the second surface,
The minimum processing energy of the protective layer is greater than the minimum processing energy of the wooden substrate,
4. The wood member according to claim 1, wherein the energy of the laser is equal to or greater than a minimum processing energy of the wood base material and is smaller than a minimum processing energy of the protective layer. Manufacturing method.
前記レーザの照射中、前記表面層を冷却することを特徴とする請求項1乃至4のいずれか一項に記載の木質部材の製造方法。   The method for producing a wood member according to any one of claims 1 to 4, wherein the surface layer is cooled during the laser irradiation. 第一面及び第二面を備える板状の木質基材と、前記第一面を覆う表面層と、前記木質基材と前記表面層との間にある保護層と、前記第二面の前記保護層と重なる位置で開口する溝とを備え、
前記保護層の発火点は、前記木質基材の発火点よりも高いことを特徴とする木質部材。
A plate-like woody substrate having a first surface and a second surface, a surface layer covering the first surface, a protective layer between the woody substrate and the surface layer, and the second surface With a groove that opens at a position overlapping the protective layer,
The wood member, wherein the ignition point of the protective layer is higher than the ignition point of the wood substrate.
JP2014072454A 2014-03-31 2014-03-31 Method of manufacturing woody member, and woody member Pending JP2015193149A (en)

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