JPH09239902A - Decorative plate - Google Patents
Decorative plateInfo
- Publication number
- JPH09239902A JPH09239902A JP8196096A JP8196096A JPH09239902A JP H09239902 A JPH09239902 A JP H09239902A JP 8196096 A JP8196096 A JP 8196096A JP 8196096 A JP8196096 A JP 8196096A JP H09239902 A JPH09239902 A JP H09239902A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- decorative
- veneer
- decorative veneer
- substrate
- 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.)
- Granted
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 54
- 230000001070 adhesive effect Effects 0.000 claims abstract description 54
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920001971 elastomer Polymers 0.000 claims abstract description 10
- 239000011229 interlayer Substances 0.000 claims abstract description 9
- 239000012790 adhesive layer Substances 0.000 claims abstract description 7
- 239000000806 elastomer Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 4
- 239000011120 plywood Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 239000005060 rubber Substances 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- 239000004640 Melamine resin Substances 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 230000006399 behavior Effects 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
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は化粧板の構成に関す
る。TECHNICAL FIELD The present invention relates to a structure of a decorative board.
【０００２】[0002]
【従来の技術】基板表面に化粧単板を貼着してなる化粧
板は、家具、壁材、建具面材等に従来より広く使用され
ている。2. Description of the Related Art Decorative boards made by sticking a decorative veneer on the surface of a substrate have been widely used for furniture, wall materials, furniture surface materials and the like.
【０００３】[0003]
【発明が解決しようとする課題】ところが、近年、この
化粧板を構成する化粧単板として使用される銘木が入手
困難となり、歩留まり向上のために化粧単板の厚さを薄
くする傾向が高まっている。However, in recent years, it has become difficult to obtain a name tree used as a decorative veneer constituting the decorative veneer, and there is an increasing tendency to reduce the thickness of the decorative veneer to improve the yield. There is.
【０００４】そして、基板として主に使用される合板表
面にこのような薄い化粧単板を貼着した場合、長期間の
含水率の変化に伴い、基板の合板および化粧単板ともに
収縮膨張を繰り返すが、両者の収縮膨張率が大きく異な
るため、化粧単板の表面に無数の干割れが生じ、化粧板
の美観を損ね、商品価値を低下させる。また、合板自体
を構成する単板に生ずる割れが表面に貼着した化粧単板
にまで及び、化粧単板に干割れを生じさせるという問題
も発生していた。When such a thin decorative veneer is adhered to the surface of a plywood mainly used as a substrate, the plywood of the substrate and the decorative veneer repeatedly contract and expand with a change in the water content for a long period of time. However, since the shrinkage and expansion rates of the two are greatly different, countless cracks occur on the surface of the veneer, impairing the aesthetics of the veneer and reducing the commercial value. In addition, cracks that occur in veneers constituting the plywood itself extend to decorative veneers adhered to the surface, and there has been a problem that dry veneers are generated in the veneer veneers.
【０００５】このような問題を解決するものとして、基
板表面に接着剤を介して非サイジング紙を貼着し、さら
にその上に接着剤を介して化粧単板を貼着してなる化粧
板が提供されたが、その製造工程において接着剤層を２
層形成する必要があり、この接着剤層を硬化させるため
に２回の加熱プレスを必要とするなど、製造工程が煩雑
化し、生産性の低下を免れないものであった。As a solution to such a problem, there is a decorative board in which a non-sizing paper is adhered to the surface of a substrate with an adhesive and a decorative veneer is further adhered onto the unsized paper. 2 layers of adhesive were provided in the manufacturing process.
Since it was necessary to form a layer and two heating presses were required to cure the adhesive layer, the manufacturing process was complicated and the productivity was unavoidable.
【０００６】[0006]
【課題を解決するための手段】本発明は上記のような従
来技術における問題点に鑑み、工業的製造に適し、しか
も化粧単板の干割れ防止効果に優れた化粧板を提供する
ことを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems in the prior art, and an object of the present invention is to provide a decorative board suitable for industrial production and having an excellent effect of preventing dry cracking of the decorative veneer. And
【０００７】すなわち、本発明は、基板表面に弾性接着
剤を介して化粧単板が貼着された化粧板であって、表面
化粧単板の層間剥離強度および基板表面の層間剥離強度
よりも弾性接着剤の層間剥離強度を小さくし、表面化粧
単板が弾性接着剤層内で剥離するように貼着されてなる
ことを特徴とする。That is, the present invention is a decorative board in which a decorative veneer is attached to the surface of a substrate via an elastic adhesive, and is more elastic than the interlayer peel strength of the surface decorative veneer and the interlayer peel strength of the substrate surface. It is characterized in that the interlayer peeling strength of the adhesive is reduced, and that the surface decorative veneer is attached so as to be peeled within the elastic adhesive layer.
【０００８】弾性接着剤としては、エラストマー接着剤
と少なくとも２種類の熱硬化性樹脂接着剤が混合された
ものを用いることが好適である。この場合、該少なくと
も２種類の熱硬化性樹脂接着剤の一方の硬化温度が１０
０℃未満であり、他方の熱硬化性樹脂接着剤の硬化温度
が１００℃以上である。As the elastic adhesive, it is preferable to use a mixture of an elastomer adhesive and at least two kinds of thermosetting resin adhesives. In this case, one of the at least two thermosetting resin adhesives has a curing temperature of 10
The temperature is lower than 0 ° C, and the curing temperature of the other thermosetting resin adhesive is 100 ° C or higher.
【０００９】[0009]
【発明の実施の形態】本発明の化粧板の基板としては、
合板、木質繊維板、木削片板、単板積層板等の木質板が
使用される。BEST MODE FOR CARRYING OUT THE INVENTION As the substrate of the decorative board of the present invention,
Wood-based boards such as plywood, wood fiberboard, wood shavings and veneer laminated boards are used.
【００１０】基板表面に貼着される化粧単板としては、
天然木材を切削して得られる天然単板や人工単板が用い
られる。As a decorative veneer to be attached to the surface of the substrate,
A natural veneer obtained by cutting natural wood or an artificial veneer is used.
【００１１】基板表面にロールコーター、スプレッダー
等の塗布装置を用いて弾性接着剤を塗布する。弾性接着
剤としてはエラストマー接着剤と少なくとも２種類の熱
硬化性樹脂接着剤が混合されたものを用いることが好適
である。An elastic adhesive is applied to the surface of the substrate by using a coating device such as a roll coater or a spreader. As the elastic adhesive, it is preferable to use a mixture of an elastomer adhesive and at least two kinds of thermosetting resin adhesives.
【００１２】弾性接着剤を構成するエラストマー接着剤
としては、天然ゴム系、塩化ゴム系、ブチルゴム系、ア
クリロニトリル・ブタジエンゴム系、スチレン・ブタジ
エンゴム系、ネオプレンゴム系、多硫化ゴム系等の常温
においてゴム弾性を有する接着剤が用いられる。As the elastomer adhesive constituting the elastic adhesive, natural rubber type, chlorinated rubber type, butyl rubber type, acrylonitrile / butadiene rubber type, styrene / butadiene rubber type, neoprene rubber type, polysulfide rubber type, etc. are used at room temperature. An adhesive having rubber elasticity is used.
【００１３】エラストマー接着剤に混合して用いる少な
くとも２種類の熱硬化性樹脂接着剤としては、フェノー
ル樹脂系、尿素樹脂系、メラミン樹脂系、ポリアミド樹
脂系、アルキド樹脂系、エポキシ樹脂系、ポリウレタン
樹脂系等が用いられる。At least two kinds of thermosetting resin adhesives used by mixing with the elastomer adhesive include phenol resin type, urea resin type, melamine resin type, polyamide resin type, alkyd resin type, epoxy resin type and polyurethane resin. A system or the like is used.
【００１４】少なくとも２種類の熱硬化性樹脂接着剤の
うちの一方にはその硬化温度が１００℃未満のものが用
いられ、他方の熱硬化性樹脂接着剤としてはその硬化温
度が１００℃以上のものが用いられる。One of at least two kinds of thermosetting resin adhesives has a curing temperature of less than 100 ° C., and the other thermosetting resin adhesive has a curing temperature of 100 ° C. or more. Things are used.
【００１５】例えば、１２０℃前後で硬化するメラミン
樹脂接着剤と、１００℃未満の常温または中温で硬化す
るエポキシ樹脂接着剤とを混合して用いる。For example, a melamine resin adhesive which cures at around 120 ° C. and an epoxy resin adhesive which cures at room temperature or an intermediate temperature of less than 100 ° C. are mixed and used.
【００１６】基板表面に弾性接着剤を塗布した上に化粧
単板を積層して加熱プレスしたときに、加圧により熱硬
化性樹脂接着剤が基板表面および化粧単板裏面の導管
孔、微細な凹凸内および各々を構成する組織内に入り込
むが、このように硬化温度の異なる少なくとも２種類以
上の熱硬化性樹脂接着剤を混合して用いることにより、
積層体の温度が徐々に上昇するにつれて、まず硬化温度
の低い接着剤が硬化して初期接着をなす。このとき、硬
化温度の高い接着剤は未硬化であり、その中で、硬化温
度の低い接着剤が略立体網目状に硬化する。そして、さ
らに積層体の温度が上昇すると、硬化温度の高い接着剤
がこの網目状の中さらにはより奥方にまで入り込んで絡
み合った状態で硬化して二次接着をなす。このため、弾
性接着剤が化粧単板内および基板表面内に十分に浸透
し、この浸透部分の剥離強度が著しく向上される。When the decorative adhesive veneer is laminated on the surface of the substrate and the decorative veneer is laminated and hot-pressed, the thermosetting resin adhesive is applied with pressure so that the thermosetting resin adhesive can be applied to the conduit holes on the surface of the decorative veneer and the back surface of the decorative veneer. Although it enters the inside of the unevenness and the tissues constituting each, by mixing at least two kinds of thermosetting resin adhesives having different curing temperatures in this way,
As the temperature of the laminate gradually rises, the adhesive having a low curing temperature first cures to form the initial adhesion. At this time, the adhesive having a high curing temperature is uncured, and among them, the adhesive having a low curing temperature cures in a substantially three-dimensional network shape. Then, when the temperature of the laminated body further rises, the adhesive having a high curing temperature enters the inside of the mesh and further to the back and cures in an entangled state to form secondary adhesion. Therefore, the elastic adhesive sufficiently penetrates into the decorative veneer and the surface of the substrate, and the peeling strength of the permeated portion is significantly improved.
【００１７】エラストマー接着剤に対する熱硬化性樹脂
接着剤の混合割合は２０〜５６ｗｔ％とすることが好ま
しい。熱硬化性樹脂接着剤の混合割合が２０ｗｔ％未満
であると、基板と化粧単板とを接着する強度が不十分で
容易に化粧単板が剥離してしまう。他方、熱硬化性樹脂
接着剤の混合割合が５６ｗｔ％を越えるようになると、
弾性接着剤の層間剥離強度が基板表面および化粧単板の
剥離強度よりも大きくなる傾向にあり、また、接着剤の
弾性が不十分となって化粧単板と基板の収縮膨張の動き
を吸収することが困難となる。The mixing ratio of the thermosetting resin adhesive to the elastomer adhesive is preferably 20 to 56 wt%. If the mixing ratio of the thermosetting resin adhesive is less than 20 wt%, the strength of bonding the substrate and the decorative veneer is insufficient and the decorative veneer is easily peeled off. On the other hand, if the mixing ratio of the thermosetting resin adhesive exceeds 56 wt%,
The interlaminar peel strength of the elastic adhesive tends to be higher than the peel strength of the substrate surface and the decorative veneer, and the elasticity of the adhesive becomes insufficient to absorb the movement of contraction and expansion of the decorative veneer and the substrate. Becomes difficult.
【００１８】弾性接着剤が塗布された基板表面に化粧単
板を載置し、ホットプレス装置を用いて加熱圧締して化
粧単板を貼着して、本発明の化粧板が得られる。The decorative veneer of the present invention can be obtained by placing the decorative veneer on the surface of the substrate coated with the elastic adhesive and applying the decorative veneer by hot pressing with a hot press machine.
【００１９】図１には本発明の化粧板の構成が概略的に
示されており、基板１の表面に弾性接着剤２を介して化
粧単板３が貼着されてなる化粧板である。FIG. 1 schematically shows the constitution of a decorative plate of the present invention, which is a decorative plate in which a decorative veneer 3 is attached to the surface of a substrate 1 via an elastic adhesive 2.
【００２０】本発明の化粧板においては、表面に貼着さ
れる化粧単板自体の層間剥離強度および基板表面の層間
剥離強度よりも、弾性接着剤層の層間剥離強度が小さい
ものとされているため、化粧板表面の化粧単板と基板と
を剥離しようと引っ張ったとき、両者を貼着している弾
性接着剤層の層内で層間剥離する。In the decorative board of the present invention, the interlayer peel strength of the elastic adhesive layer is smaller than the interlayer peel strength of the decorative veneer itself attached to the surface and the interlayer peel strength of the substrate surface. Therefore, when the decorative veneer on the surface of the decorative plate and the substrate are pulled in an attempt to separate the layers, the layers are separated from each other in the elastic adhesive layer that adheres the both.
【００２１】このような剥離強度の関係を持たせること
により、化粧板を構成する基板と化粧単板が長期間にわ
たってその含水率変化に伴う独自の収縮膨張を繰り返し
ても、両者の間に介在する弾性接着剤によってそれらの
挙動が吸収され、両者の収縮膨張の差に起因する干割れ
を防止する。また、たとえ基板表面に割れが発生して
も、弾性接着剤層内で吸収され、化粧単板にまでその影
響が及ぶことが防止される。By providing such a peel strength relationship, even if the substrate constituting the decorative plate and the decorative veneer repeat their own contraction and expansion due to the change in water content over a long period of time, they are interposed between the two. These behaviors are absorbed by the elastic adhesive, which prevents cracking due to the difference in shrinkage and expansion between the two. Further, even if cracks occur on the surface of the substrate, they are absorbed in the elastic adhesive layer and are prevented from affecting the decorative veneer.
【００２２】[0022]
【発明の効果】本発明によれば、化粧単板の干割れを防
止することができ、しかもその製造も容易であって生産
性の向上およびコストダウンを図ることができる。According to the present invention, the decorative veneer can be prevented from being cracked, and the veneer can be easily manufactured to improve the productivity and reduce the cost.
【図１】本発明による化粧板の概略構成を示す断面図で
ある。FIG. 1 is a cross-sectional view showing a schematic configuration of a decorative board according to the present invention.
１ 基板 ２ 弾性接着剤 ３ 化粧単板 1 substrate 2 elastic adhesive 3 decorative veneer
Claims (2)
が貼着された化粧板であって、表面化粧単板の層間剥離
強度および基板表面の層間剥離強度よりも弾性接着剤の
層間剥離強度を小さくし、表面化粧単板が弾性接着剤層
内で剥離するように貼着されてなることを特徴とする化
粧板。1. A decorative board in which a decorative veneer is adhered to the surface of a substrate via an elastic adhesive, wherein the interlaminar peel strength of the surface decorative veneer and the interlayer peel strength of the elastic adhesive are higher than the interlayer peel strength of the substrate surface. A decorative plate, which has a small peel strength and is formed by adhering a surface decorative veneer so as to separate in an elastic adhesive layer.
剤と少なくとも２種類の熱硬化性樹脂接着剤が混合され
たものを用い、且つ、前記少なくとも２種類の熱硬化性
樹脂接着剤の一方の硬化温度が１００℃未満であり、他
方の熱硬化性樹脂接着剤の硬化温度が１００℃以上であ
ることを特徴とする請求項１の化粧板。2. The elastic adhesive used is a mixture of an elastomer adhesive and at least two kinds of thermosetting resin adhesives, and the curing temperature of one of the at least two kinds of thermosetting resin adhesives. Is less than 100 ° C., and the curing temperature of the other thermosetting resin adhesive is 100 ° C. or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08081960A JP3084608B2 (en) | 1996-03-12 | 1996-03-12 | Decorative board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08081960A JP3084608B2 (en) | 1996-03-12 | 1996-03-12 | Decorative board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09239902A true JPH09239902A (en) | 1997-09-16 |
| JP3084608B2 JP3084608B2 (en) | 2000-09-04 |
Family
ID=13761079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08081960A Expired - Fee Related JP3084608B2 (en) | 1996-03-12 | 1996-03-12 | Decorative board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3084608B2 (en) |
-
1996
- 1996-03-12 JP JP08081960A patent/JP3084608B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3084608B2 (en) | 2000-09-04 |
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