JP2779885B2 - Manufacturing method of composite board - Google Patents
Manufacturing method of composite boardInfo
- Publication number
- JP2779885B2 JP2779885B2 JP4253824A JP25382492A JP2779885B2 JP 2779885 B2 JP2779885 B2 JP 2779885B2 JP 4253824 A JP4253824 A JP 4253824A JP 25382492 A JP25382492 A JP 25382492A JP 2779885 B2 JP2779885 B2 JP 2779885B2
- Authority
- JP
- Japan
- Prior art keywords
- self
- compound
- board
- composite board
- plate
- 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
Landscapes
- Veneer Processing And Manufacture Of Plywood (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、建築用板、家具用板
として利用できる複合板の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a composite board which can be used as a board for building and a board for furniture.
【0002】[0002]
【従来の技術】近年、熱帯雨林の保護のため、ラワン材
に代わる建築用あるいは家具用の材料が求められてい
る。このため、再生可能な木材資源として針葉樹林を使
用することが考えられるが、針葉樹材はラワン材に代表
される南洋材に比べて表面が軟らかく、かつ粗いなど問
題があるため、他の基材と組み合わせて複合板として使
用する必要があった。2. Description of the Related Art In recent years, there has been a demand for architectural or furniture materials in place of Rawan timber to protect tropical rainforests. For this reason, it is conceivable to use coniferous forest as a renewable timber resource.However, softwood lumber has a softer and rougher surface than southern lumber represented by lauan timber. It had to be used as a composite board in combination with.
【0003】針葉樹材と他の基材、例えばハードボー
ド,MDF等の木質繊維板、炭酸カルシウム板,けい酸
カルシウム板等の無機板、あるいは金属板を接着剤を介
して貼り合わせて複合板を製造する場合、熱圧を行なう
と含水率変化により複合板にそりが発生する。このそり
を解消するために水性ビニルウレタン、尿素樹脂等の接
着剤を用いて冷圧して複合板を製造することも考えられ
るが、この場合は冷圧時間が長く必要となり、生産性に
大きな問題があった。A composite board is formed by bonding softwood and other base materials, for example, a hardwood board, an inorganic board such as a wood fiber board such as MDF, a calcium carbonate board, a calcium silicate board, or a metal board via an adhesive. In the case of manufacturing, when heat and pressure are applied, the composite board warps due to a change in water content. In order to eliminate this warpage, it is conceivable to produce a composite board by cold-pressing using an adhesive such as aqueous vinyl urethane or urea resin, but in this case, a long cold-pressing time is required, which is a major problem in productivity. was there.
【0004】[0004]
【発明が解決しようとする課題】この発明は、上述した
問題点を解消し、そりのない複合板を生産性を低下させ
ることなく製造しようとするものである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to manufacture a composite board without warping without reducing productivity.
【0005】[0005]
【課題を解決するための手段】この発明は、少なくとも
一方が針葉樹材である二枚の板材を接着剤を介して接合
するに際し、一方の板材の片面に自己乳化型イソシアネ
ート化合物を塗布するとともに、他方の板材の片面に自
己乳化型イソシアネート化合物と反応しうる化合物を塗
布した後、上記自己乳化型イソシアネート化合物を塗布
した面と自己乳化型イソシアネート化合物と反応しうる
化合物を塗布した面とを重ね合わせて圧縮することを特
徴とする複合板の製造方法に係るものである。According to the present invention, a self-emulsifying isocyanate compound is applied to one surface of one of the two boards, at least one of which is a softwood, when the two boards are joined via an adhesive. After applying a compound capable of reacting with the self-emulsifying isocyanate compound to one surface of the other plate, the surface coated with the self-emulsifying isocyanate compound and the surface coated with the compound capable of reacting with the self-emulsifying isocyanate compound are overlapped. And compressing the composite plate.
【0006】この発明において、針葉樹材と接着される
他方の板材としては、ハードボード、MDF、炭酸カル
シウム板、珪酸カルシウム板、金属板等どのような板材
でもよい。In the present invention, the other plate material to be bonded to the softwood material may be any board material such as a hard board, an MDF, a calcium carbonate plate, a calcium silicate plate, and a metal plate.
【0007】この発明で自己乳化型イソシアネート化合
物と反応しうる化合物としては、変性酢酸ビニル樹脂、
ポリビニルアルコールのような水性接着剤がある。ま
た、上記水性接着剤にアミン類や有機金属化合物などの
硬化触媒(硬化促進剤)を添加することも可能である。
アミン類としては、トリエチルアミン、テトラメチルグ
アニジン、トリエチレンジアミン、ジメチルアミノエタ
ノール等があり、有機金属化合物としては、ジブチルチ
ンジラウレート、スタナスオクトエース、ジブチルチン
カルボキシレート、オクテン酸鉛等がある。このように
水性接着剤を使用すれば、有機溶剤を使用する必要がな
くなり、作業環境の改善に役立つ。なお、二枚の板材の
どちらに自己乳化型イソシアネート化合物あるいは自己
乳化型イソシアネート化合物と反応しうる化合物を塗布
するかは、板材の吸水性と自己乳化型イソシアネート化
合物、自己乳化型イソシアネート化合物と反応しうる化
合物の粘度を考慮して決定することができるが、大部分
の場合どちらでもよい。In the present invention, the compound capable of reacting with the self-emulsifying isocyanate compound includes a modified vinyl acetate resin,
There are aqueous adhesives such as polyvinyl alcohol. It is also possible to add a curing catalyst (curing accelerator) such as an amine or an organometallic compound to the aqueous adhesive.
Amines include triethylamine, tetramethylguanidine, triethylenediamine, dimethylaminoethanol, and the like, and organometallic compounds include dibutyltin dilaurate, stannas octoace, dibutyltin carboxylate, and lead octenoate. The use of the water-based adhesive eliminates the need to use an organic solvent, which helps to improve the working environment. Which of the two plate materials is to be coated with the self-emulsifying isocyanate compound or a compound capable of reacting with the self-emulsifying isocyanate compound depends on the water absorption of the plate material and the self-emulsifying isocyanate compound, which reacts with the self-emulsifying isocyanate compound. It can be determined in consideration of the viscosity of the resulting compound, but in most cases either may be used.
【0008】[0008]
【発明の効果】この発明は上述したように構成されてい
るので、複合板の製造にあたって、複合板のそりが非常
に少なくなるうえ、圧締時間も大幅に短縮することがで
きる。そのため、必要であれば、連続プレス可能となる
うえ、高温による熱圧締も必要としないため消費エネル
ギーの節約にもなる。また、自己乳化型のイソシアネー
ト化合物は水によって粘度調整ができるので、有機溶剤
を必要としなく作業環境の改善に役立つ上、通常の溶剤
希釈型イソシアネート化合物に比べ基材に浸透しにくい
ので、二枚の板材を確実に強固に接着できる。Since the present invention is constructed as described above, the warpage of the composite plate is extremely reduced and the pressing time can be greatly reduced in the production of the composite plate. Therefore, if necessary, continuous pressing can be performed, and energy consumption can be saved because hot pressing by high temperature is not required. In addition, the self-emulsifying isocyanate compound can be adjusted in viscosity by water, so that it does not require an organic solvent, which helps to improve the working environment, and is harder to penetrate into the base material than ordinary solvent-diluted isocyanate compounds. Can be firmly bonded.
【0009】[0009]
【実施例1】自己乳化型のイソシアネート化合物1重量
部を水1重量部に攪拌分散させ、この分散液を厚さ12
mmの針葉樹合板の表面に150g/m2塗布する。一
方、官能基を持たせた水性エマルジョンを厚さ3mmM
DFの裏面に100g/m2塗布し、5kgf/cm2
の圧力で90秒間冷圧した後、一日間養生して所望の複
合板を得た。この複合板の常態接着力は31.2kgf
/cm2(木破率100%)で、煮沸繰り返し接着力は
28.1kgf/cm2(木破率100%)であった。
なお、木破率100%とは接着剤界面で破壊されなかっ
たことを示す。Example 1 1 part by weight of a self-emulsifying isocyanate compound was stirred and dispersed in 1 part by weight of water.
Apply 150 g / m 2 to the surface of a mm softwood plywood. On the other hand, an aqueous emulsion having a functional group
100 g / m 2 applied to the back of DF, 5 kgf / cm 2
And then cured for one day to obtain the desired composite board. The normal adhesive strength of this composite board is 31.2 kgf
/ Cm 2 (100% wood breakage), and the boiling adhesive strength was 28.1 kgf / cm 2 (100% wood breakage).
In addition, 100% of a wood fracture shows that it was not broken at the adhesive interface.
【0010】[0010]
【比較例1】接着剤として水性ビニルウレタンを使用し
て実地例1と同様にして複合板を得ようとしたが、接着
できなかった。COMPARATIVE EXAMPLE 1 A composite board was obtained in the same manner as in Practical Example 1 using aqueous vinyl urethane as an adhesive, but could not be bonded.
【0011】[0011]
【実施例2】実施例1のMDFの代わりに厚み6mmの
けい酸カルシウム板を使用して所望の複合板を得た。Example 2 A desired composite plate was obtained by using a calcium silicate plate having a thickness of 6 mm instead of the MDF of Example 1.
【0012】[0012]
【実施例3】実施例1のMDFの代わりに厚さ0.5m
mの鉄板を使用して所望の複合板を得た。[Embodiment 3] Instead of the MDF of the embodiment 1, the thickness is 0.5 m.
The desired composite plate was obtained using an iron plate of m.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) B32B 1/00 - 35/00 B27D 1/00 - 5/00──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) B32B 1/00-35/00 B27D 1/00-5/00
Claims (1)
板材を接着剤を介して接合するに際し、一方の板材の片
面に自己乳化型イソシアネート化合物を塗布するととも
に、他方の板材の片面に自己乳化型イソシアネート化合
物と反応しうる化合物を塗布した後、上記自己乳化型イ
ソシアネート化合物を塗布した面と自己乳化型イソシア
ネート化合物と反応しうる化合物を塗布した面とを重ね
合わせて圧締することを特徴とする複合板の製造方法。When joining two boards, at least one of which is softwood, via an adhesive, a self-emulsifying isocyanate compound is applied to one surface of one of the boards.
On one side of the other plate is a self-emulsifying isocyanate compound
After applying a compound that can react with the product,
Surface coated with socyanate compound and self-emulsifying isocyanate
A method for producing a composite board, comprising superimposing and pressing a surface coated with a compound capable of reacting with a nate compound .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4253824A JP2779885B2 (en) | 1992-08-28 | 1992-08-28 | Manufacturing method of composite board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4253824A JP2779885B2 (en) | 1992-08-28 | 1992-08-28 | Manufacturing method of composite board |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0671812A JPH0671812A (en) | 1994-03-15 |
JP2779885B2 true JP2779885B2 (en) | 1998-07-23 |
Family
ID=17256651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4253824A Expired - Fee Related JP2779885B2 (en) | 1992-08-28 | 1992-08-28 | Manufacturing method of composite board |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2779885B2 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6036921B2 (en) * | 1981-03-27 | 1985-08-23 | 株式会社住建産業 | Manufacturing method of architectural decorative board |
JPS6282027A (en) * | 1985-10-07 | 1987-04-15 | 山陽国策パルプ株式会社 | Three-layer particle board |
JPH0463168A (en) * | 1990-06-29 | 1992-02-28 | Mitsui Toatsu Chem Inc | Production of laminate |
-
1992
- 1992-08-28 JP JP4253824A patent/JP2779885B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0671812A (en) | 1994-03-15 |
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