JPH052482B2 - - Google Patents
Info
- Publication number
- JPH052482B2 JPH052482B2 JP21507488A JP21507488A JPH052482B2 JP H052482 B2 JPH052482 B2 JP H052482B2 JP 21507488 A JP21507488 A JP 21507488A JP 21507488 A JP21507488 A JP 21507488A JP H052482 B2 JPH052482 B2 JP H052482B2
- Authority
- JP
- Japan
- Prior art keywords
- plywood
- decorative
- veneer
- bonding
- ply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011120 plywood Substances 0.000 claims description 90
- 239000000835 fiber Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 11
- 238000003825 pressing Methods 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000002023 wood Substances 0.000 description 4
- 238000007731 hot pressing Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- HNPDNOZNULJJDL-UHFFFAOYSA-N ethyl n-ethenylcarbamate Chemical compound CCOC(=O)NC=C HNPDNOZNULJJDL-UHFFFAOYSA-N 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Veneer Processing And Manufacture Of Plywood (AREA)
- Finished Plywoods (AREA)
Description
〔産業上の利用分野〕
合板基板上に、いわゆる突板と称される化粧単
板を接着した化粧合板であつて、その長手方向に
上に突出する反りを与える構成の化粧合板および
その化粧合板の製造方法に関するものである。
〔従来の技術〕
従来、基板として合板を選択し、該合板の表面
に、いわゆる突板と称される化粧単板を接着し、
化粧加工した合板は、天然木化粧合板又は単板オ
ーバーレイ合板とも呼ばれる化粧合板であつて、
建築物の内装壁材、床材、家具・木工製品の表面
材等として広く利用され、その合板基板上に化粧
単板を接着した化粧合板の構成及びその化粧合板
の製造方法は、普通に実施されているものであ
る。
〔発明が解決しようとする課題〕
上記従来普通に実施されている化粧合板の構成
およびその製造方法では、合板の縦方向すなわち
長手方向において第１図ａに示すように下に突出
する凹状の反りが出る欠点があり、このような向
きの反りは、該化粧板を例えば床板、内装壁材と
して使用する場合、基板上に連続して施工するの
がやりにくく、かつ、施工後平坦化しにくい等の
問題があつた。
これを解決するためには、本来、反りのない平
坦な化粧合板が製造できれば良いが、熱圧操作後
に水平平坦な化粧合板を製造しても平坦状態は一
時的なものにすぎず、環境の乾湿状態により、化
粧合板自体の木材含水量が変化し、収縮、膨張等
の作用が生じ、経時的に下に突出する凹状の反り
が出ることになる。
本願発明の目的は、上記従来技術の問題点を解
決した化粧合板を提供することにある。
〔課題を解決するための手段〕
本発明者らは、上記問題点を解決すべく研究を
重ねた結果、第１図ｂに示すような、その長手方
向において上に突出する凸状の反りを化粧合板に
与えると、上記問題が解決することを見出した。
そこで、この新知見に基づいて、さらに研究を重
ねた結果、化粧合板の構成を２枚の合板を積層接
着してなる２枚重の合板及びその裏面に接着され
た合板の中板と繊維方向を同じくする裏打ち単板
とすることにより、上記長手方向において上に突
出する凸状の反りを化粧合板が得られることに成
功し、本発明を完成するに至つたものである。
すなわち、本発明の化粧合板は、２枚の合板を
積層接着してなる２枚重ねの合板の表面に化粧単
板を、２枚重ね合板の裏面に合板の中板と繊維方
向を同じくする裏打ち単板を積層接着したことを
特徴とするものであり、本発明の化粧合板の製造
方法は、合板２枚を重ね、その裏面に合板の中板
と繊維方向を同じくする裏打ち単板を積層し、そ
れらを熱圧接着した後、該積層接着したものの表
面に化粧単板を積層し、熱圧接着することを特徴
とするものである。
なお、前記２枚重の合板を構成する各合板とし
ては、通常は、３プライ合板が用いられる。
〔作用〕
合板の表面に化粧単板を接着した化粧合板は通
常化粧単板は高含水率状態で熱圧接着するため、
化粧単板は膨張状態から熱圧による収縮状態、そ
の後の乾燥状態により経時的にも収縮状態に置か
れることになり、この収縮状態に起因して、第１
図ａに示すような下に突出する凹状の反りとなる
ものと考えられる。
本発明は、基板合板の中板の繊維方向と同じく
した裏打ち単板を基板合板の裏面に接着すること
により、裏打ち単板の熱圧接着および裏打ち単板
の裏割れの存在等による収縮作用に起因して、上
記化粧単板による表面収縮反り作用よりも強く化
粧合板の裏面において収縮反り作用が生じ、第１
図ｂおよび第２図に示すような上に突出する凸状
の反りを有する化粧合板になるものと考えられ
る。
〔実施例〕
第２図および第３図を参照しながら、本発明の
実施例を詳細に説明すると、本発明の化粧合板の
構成は、第２図に示されるように、２枚重ねた合
板１，２の表面に化粧単板４、裏面に合板１，２
の中板と繊維方向を同じくする裏打ち単板３を積
層接着した構成であり、２枚の合板１，２はそれ
ぞれ同厚、例えば2.5mmであつて、３プライ構成
の表裏単板が例えば、それぞれ0.65mm、中板は
1.2mm厚の単板からなる、ものを選択し、さらに
化粧単板４は0.2〜1.0mm厚の銘木からなるもので
あり、裏打ち単板３としては、上記合板１，２の
中板と同一厚みの1.2mmの単板を選択し、合板１，
２の中板と同一繊維方向で接着した構成である。
次に本発明の化粧合板の製造方法は、第３図
ａ，ｂに示されるように、ａおよびｂの二工程の
積層接着工程に大別さる。
まず、第３図ａに示されるように、３プライ構
成で、表裏単板、中板が同一厚さの２枚の合板
１，２を重ね、２枚の合板１，２の裏面に繊維方
向を合板１，２の中板と同じくして裏打ち単板３
を配置するが、それぞれの接着面には予めフエノ
ール樹脂、尿素樹脂やメラミン樹脂のアミノ系樹
脂等通常合板製造に使用している接着剤が塗布さ
れており、温度110〜140℃、圧締圧力４〜10Kg／
cm2、圧締時間２〜10分間の条件下で熱圧操作し、
２枚の合板１，２の裏面に繊維方向を合板の中板
と同じくした裏打ち単板３を積層接着したものを
製造し、次に第３図ｂに示される工程に移る。す
なわち、上記工程で積層接着したものの合板１表
面に、化粧単板４に裏打ち接着紙を介装するか又
はしないで、スチレンブタジエン系接着剤又は水
性ビニルウレタン樹脂接着剤等を塗布して、化粧
単板４を積層し、温度100〜140℃、圧締圧力４〜
10Kg／cm2、熱圧時間0.5〜５分間の熱圧操作によ
り、熱圧接着したものである。
このように、a2枚の合板と裏打ち単板の積層、
熱圧接着する工程とｂ，ａによつて積層接着され
たものの表面に化粧単板を熱圧接着する工程とを
先後の関係で分けた理由は、接着剤の種類、単
板、合板の積層する材料の厚み等に基づく熱圧条
件が相違するためであり、ｂ工程を先行すれば、
すなわち裏打ち単板の熱圧接着前に、化粧単板の
合板に対する熱圧接着を行えば、裏打ち単板の熱
圧接着時にもより熱圧条件が強い状態で再度化粧
単板の合板に対する熱圧操作が行われることにな
り、化粧単板の過乾状態等に起因して表面割れが
発生することも考えられるからである。そして、
その後の工程として必要ならば、例えば３尺×６
尺のものを適宜大きさ１尺幅で切断加工し、１尺
×６尺のものにし、実加工を施した後、表面塗装
加工する。また、上記実施例の２枚重ねの合板
１，２の総計厚み５mmと同一厚の３プライ又は５
プライの合板の裏面に1.2mm厚の裏打ち単板を接
着した合板を使用すれば、上記実施例の化粧合板
と略同一の構成となるが、これらのものでは長手
方向には、本発明の化粧合板と同様上に突出する
凸状の反りができるが、幅方向において下に突出
する凹状の反りが出たりし、不安定な状態となる
ため、上記１枚の合板のみを使用する例は実施の
範囲内となり得ないものである。
なお、本発明の実施例として使用される２枚重
ねの合板は、2.5mm厚で総計厚み５mmのものを示
したが、このものに限定されず、各合板の厚さが
５mm以上のものを示したが、このものに限定され
ず、各合板の厚さが５mm以上のものにも本発明は
適用でき、また、裏打ち単板の厚さも上記実施例
記載のものに限定されない。
実施例 １
[Industrial Application Fields] Decorative plywood in which a decorative veneer, also known as a veneer, is adhered to a plywood substrate, and which has a structure that gives it a warp that projects upward in the longitudinal direction, and the decorative plywood. This relates to a manufacturing method. [Prior art] Conventionally, plywood is selected as a substrate, and a decorative veneer, called a veneer, is adhered to the surface of the plywood.
Decorated plywood is decorative plywood, which is also called natural wood decorative plywood or veneer overlay plywood.
Widely used as interior wall materials and flooring materials for buildings, surface materials for furniture and wood products, etc., the structure of decorative plywood, in which decorative veneer is bonded to the plywood substrate, and the manufacturing method of the decorative plywood are commonly carried out. This is what has been done. [Problem to be Solved by the Invention] In the structure of the decorative plywood and the manufacturing method thereof that have been commonly practiced in the past, the concave warp that protrudes downward in the vertical direction, that is, the longitudinal direction of the plywood, as shown in FIG. This kind of warpage makes it difficult to apply the decorative board continuously on the substrate when it is used as a floorboard or interior wall material, and it is difficult to flatten the board after installation. There was a problem. In order to solve this problem, it would be good to manufacture flat decorative plywood without warping, but even if horizontally flat decorative plywood is manufactured after heat-pressing, the flat state is only temporary, and the environmental Depending on the dry and wet conditions, the wood moisture content of the decorative plywood itself changes, causing effects such as contraction and expansion, resulting in a concave warp that protrudes downward over time. An object of the present invention is to provide a decorative plywood that solves the problems of the prior art described above. [Means for Solving the Problems] As a result of repeated research in order to solve the above problems, the inventors of the present invention have solved the convex warpage that protrudes upward in the longitudinal direction as shown in Fig. 1b. It has been found that the above problem can be solved by applying it to decorative plywood.
Based on this new knowledge, we conducted further research and determined that the composition of decorative plywood was two-ply plywood made by laminating and bonding two plywood sheets, a middle plate of plywood bonded to the back side, and a fiber direction. By using the same backing veneer, we were able to successfully obtain decorative plywood with a convex warp that projects upward in the longitudinal direction, leading to the completion of the present invention. That is, the decorative plywood of the present invention is made by laminating and bonding two plywood sheets, and a decorative veneer is placed on the surface of the two-ply plywood, and a lining having the same fiber direction as the middle plate of the plywood is placed on the back side of the two-ply plywood. The decorative plywood manufacturing method of the present invention is characterized by laminating and bonding veneers, and the method for manufacturing decorative plywood of the present invention involves stacking two plywood sheets and laminating a backing veneer having the same fiber direction as the middle plate of the plywood on the back side. After bonding them together under heat and pressure, a decorative veneer is laminated on the surface of the laminated and bonded product, and the adhesive is bonded under heat and pressure. Note that three-ply plywood is usually used as each plywood constituting the two-ply plywood. [Function] Decorative plywood with decorative veneer bonded to the surface of plywood is usually bonded under heat and pressure with a high moisture content.
The decorative veneer goes from an expanded state to a contracted state due to heat and pressure, and then to a contracted state over time due to the drying state, and due to this contracted state, the first
It is thought that this results in a concave warp that protrudes downward as shown in Figure a. The present invention prevents shrinkage caused by thermo-pressure adhesion of the lining veneer and the presence of cracks in the back of the lining veneer by bonding the lining veneer with the same fiber direction as the middle plate of the substrate plywood to the back surface of the substrate plywood. As a result, a shrinkage warp effect occurs on the back surface of the decorative plywood that is stronger than the surface shrinkage warp effect caused by the decorative veneer, and the first
It is thought that the decorative plywood will have an upwardly protruding convex warp as shown in Figure b and Figure 2. [Example] An example of the present invention will be described in detail with reference to FIGS. 2 and 3. As shown in FIG. Decorative veneer 4 on the front side of 1 and 2, plywood 1 and 2 on the back side
It has a structure in which a backing veneer 3 with the same fiber direction as the middle plate is laminated and bonded, and the two plywood boards 1 and 2 have the same thickness, for example, 2.5 mm, and the front and back veneers of the 3-ply structure are, for example, 0.65mm each, the middle plate is
A veneer with a thickness of 1.2 mm was selected, and the decorative veneer 4 was made of precious wood with a thickness of 0.2 to 1.0 mm, and the backing veneer 3 was the same as the middle plate of the plywood 1 and 2 above. Select 1.2mm thick veneer, plywood 1,
It has a structure in which it is bonded in the same fiber direction as the middle plate of No. 2. Next, the method for manufacturing decorative plywood of the present invention can be roughly divided into two lamination and bonding steps, a and b, as shown in FIGS. 3a and 3b. First, as shown in Figure 3a, two plywood boards 1 and 2 are stacked in a 3-ply configuration, with the front and back veneers and the middle board having the same thickness, and the fiber direction is applied to the back side of the two plywood boards 1 and 2. The same as the middle plate of plywood 1 and 2, backing veneer 3
The adhesives used for plywood production, such as phenol resin, urea resin, and amino resin such as melamine resin, are applied in advance to each adhesive surface, and the temperature is 110 to 140℃ and the pressing pressure is applied. 4~10Kg/
cm 2 , heat-pressing operation under conditions of 2 to 10 minutes of pressing time,
A backing veneer 3 whose fiber direction is the same as that of the middle plate of the plywood is laminated and bonded to the back surfaces of the two plywood boards 1 and 2, and then the process shown in FIG. 3b is carried out. That is, the surface of the plywood 1 that has been laminated and bonded in the above process is coated with a styrene-butadiene adhesive or water-based vinyl urethane resin adhesive, etc., with or without interposing adhesive backing paper to the decorative veneer 4, and the decorative veneer is applied. Laminate 4 veneers at a temperature of 100 to 140℃ and a pressing pressure of 4 to 400℃.
They were bonded by hot pressure at a pressure of 10 Kg/cm 2 for a time of 0.5 to 5 minutes. In this way, lamination of A2 plywood and backing veneer,
The reason why the process of hot-pressure bonding and the process of hot-pressure bonding a decorative veneer on the surface of the laminated veneer in b and a are separated depending on the type of adhesive, the lamination of veneers, and plywood. This is because the heat and pressure conditions are different based on the thickness of the material to be processed, and if step b is preceded,
In other words, if you heat-press the decorative veneer to the plywood before bonding the backing veneer by heat-pressing, then the decorative veneer will be bonded to the plywood again under stronger heat-pressure conditions when bonding the backing veneer by heat-pressure. This is because surface cracking may occur due to over-drying of the decorative veneer due to the operation. and,
If necessary as a subsequent process, for example, 3 shaku x 6
The pieces are cut into 1-shaku widths as appropriate to make 1-shaku x 6-shaku pieces, and after actual processing, the surface is painted. In addition, 3 ply or 5 ply of the same thickness as the total thickness of 5 mm of the two ply boards 1 and 2 of the above embodiment
If plywood is used with a 1.2 mm thick backing veneer adhered to the back side of the plywood, the structure will be approximately the same as that of the decorative plywood of the above embodiment, but in the longitudinal direction, the decorative plywood of the present invention will be Similar to plywood, a convex warp that protrudes upward can occur, but a concave warp that protrudes downward in the width direction may occur, creating an unstable condition. cannot be within the range of The two-ply plywood used as an example of the present invention is shown as having a thickness of 2.5 mm and a total thickness of 5 mm, but is not limited to this. However, the present invention is not limited to this, and the present invention can also be applied to plywood having a thickness of 5 mm or more, and the thickness of the backing veneer is not limited to that described in the above embodiments. Example 1
【表】
上記の条件により、本発明の化粧合板を30枚製
造したが、すべて若干上に凸状の化粧合板であつ
た。
実施例 ２[Table] Thirty pieces of decorative plywood of the present invention were manufactured under the above conditions, and all of them were decorative plywood with a slightly upwardly convex shape. Example 2
本発明は、合板２枚を重ね、その裏面に繊維方
向を合板の中板と同じくした裏打ち単板を熱圧
し、積層接着してあるため、裏打ち単板の熱圧接
着および裏割れの存在等による収縮作用に起因し
て、化粧単板による表面収縮反り作用よりも強く
化粧合板の裏面において収縮反り作用が生じ、上
に突出する凸状の反りを有する化粧合板になるも
のであり、該上に突出する凸状の反りを有する化
粧合板は、例えば床板、内装壁材として使用する
場合でも、基板上に連接して施工するのが比較的
容易で、かつ、施工後平坦化しやすいものであ
る。
また合板２枚を重ね、その裏側に裏打ち単板を
熱圧接着した後に、該積層接着したものの表面に
化粧単板を積層し、熱圧接着したため、裏打ち単
板および化粧単板を同時に合板２枚重ねのものの
表裏に熱圧接着する方法又は、合板２枚にまず化
粧単板を熱圧接着し、後これらの積層接着したも
のの裏面に裏打ち単板を熱圧接着する方法に比較
し、化粧単板の表面割れの発生を防止した方法で
あるということができる。
In the present invention, two sheets of plywood are stacked and a backing veneer with the same fiber direction as the middle plate of the plywood is laminated and bonded by hot pressing on the back side. Due to the shrinkage effect of Decorative plywood with a protruding convex warp is relatively easy to construct by connecting it to a substrate, even when used as floorboards or interior wall materials, and is also easy to flatten after construction. . In addition, after stacking two plywood sheets and heat-pressing bonding a backing veneer to the back side, a decorative veneer was laminated on the surface of the laminated and bonded material and heat-pressure bonding, so that the backing veneer and the decorative veneer were bonded to the plywood 2 at the same time. Compared to the method of hot-pressing bonding the front and back sides of a stack of plywood, or the method of first hot-pressing a decorative veneer to two plywood sheets and then heat-pressing bonding a backing veneer to the back side of the laminated board, This method can be said to prevent the occurrence of surface cracks on the veneer.
第１図ａ，ｂは、従来の化粧合板の反りの状態
と本発明の化粧合板の反りの状態を示し、第２図
は本発明の化粧合板の構成の一例を示し、第３図
ａ，ｂは本発明の化粧合板の製造方法の一例を示
すものである。
１，２……合板、３……裏打ち単板、４……化
粧単板。
Figures 1a and 1b show the warped state of conventional decorative plywood and the warped state of the decorative plywood of the present invention, Figure 2 shows an example of the structure of the decorative plywood of the present invention, and Figures 3a, b shows an example of the method for manufacturing decorative plywood of the present invention. 1, 2...plywood, 3...backing veneer, 4...decorative veneer.
Claims (1)
板の表面に化粧単板を、また前記２枚重ね合板の
裏面に合板の中板と繊維方向を同じくする裏打ち
単板を積層接着したことを特徴とする化粧合板。 ２ ２枚重ねの合板がそれぞれ３プライ合板であ
る請求項１記載の化粧合板。 ３ 合板２枚を重ね、その裏面に合板の中板と繊
維方向を同じくする裏打ち単板を積層し、それら
を熱圧接着した後、該積層接着したものの表面に
化粧単板を積層し、熱圧接着することを特徴とす
る化粧合板の製造方法。[Scope of Claims] 1. A decorative veneer on the surface of a two-ply plywood formed by laminating and bonding two plywood sheets, and a lining having the same fiber direction as the middle board of the plywood on the back surface of the two-ply plywood board. Decorative plywood characterized by laminating and bonding veneers. 2. The decorative plywood according to claim 1, wherein each of the two-ply plywood is a 3-ply plywood. 3 Two sheets of plywood are stacked, a backing veneer with the same fiber direction as the middle board of the plywood is laminated on the back side, and they are bonded by heat and pressure, and then a decorative veneer is laminated on the surface of the laminated and bonded material, and heat is applied. A method for producing decorative plywood characterized by pressure bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21507488A JPH0263701A (en) | 1988-08-31 | 1988-08-31 | Decorative plywood and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21507488A JPH0263701A (en) | 1988-08-31 | 1988-08-31 | Decorative plywood and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0263701A JPH0263701A (en) | 1990-03-05 |
| JPH052482B2 true JPH052482B2 (en) | 1993-01-12 |
Family
ID=16666323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21507488A Granted JPH0263701A (en) | 1988-08-31 | 1988-08-31 | Decorative plywood and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0263701A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4135286B2 (en) * | 2000-01-14 | 2008-08-20 | 松下電工株式会社 | Eyelash forming tool |
| CN106827107A (en) * | 2017-01-25 | 2017-06-13 | 广东耀东华装饰材料科技有限公司 | A kind of manufacture method of anti-surface checking synchronous grain-matched veneered plywood |
-
1988
- 1988-08-31 JP JP21507488A patent/JPH0263701A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0263701A (en) | 1990-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |