JPH0671812A - Manufacture of composite board - Google Patents
Manufacture of composite boardInfo
- Publication number
- JPH0671812A JPH0671812A JP4253824A JP25382492A JPH0671812A JP H0671812 A JPH0671812 A JP H0671812A JP 4253824 A JP4253824 A JP 4253824A JP 25382492 A JP25382492 A JP 25382492A JP H0671812 A JPH0671812 A JP H0671812A
- Authority
- JP
- Japan
- Prior art keywords
- isocyanate group
- board
- compound
- compound containing
- 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.)
- Granted
Links
Landscapes
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
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 building board and a furniture board.
【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, in order to protect tropical rain forests, there has been a demand for materials for construction or furniture which replace Lauan wood. For this reason, it is possible to use coniferous forests as a renewable wood resource.However, coniferous trees have problems such as a softer surface and a rougher surface than the South Sea timber typified by Lauan wood. 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。[0003] Softwood and other base materials, for example, hardboard, wood fiber board such as MDF, inorganic board such as calcium carbonate board, calcium silicate board, or metal board is bonded with an adhesive to form a composite board. In the case of manufacturing, warping occurs in the composite plate due to a change in water content when hot pressing is performed. In order to eliminate this warpage, it is possible to manufacture 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 The present invention is intended to solve the above-mentioned problems and to manufacture a warpage-free composite plate without lowering the 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イソシアネート基を含
む化合物を塗布するとともに、他方の板材の片面にイソ
シアネート基と反応しうる化合物を塗布した後、上記イ
ソシアネート基を含む化合物を塗布した面とイソシアネ
ート基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, at the time of joining two plate materials, at least one of which is a softwood material, through an adhesive, one surface of one plate material is coated with a compound containing an isocyanate group, and After coating a compound capable of reacting with an isocyanate group on one surface of the other plate, the surface coated with the compound containing an isocyanate group and the surface coated with a compound capable of reacting with an isocyanate group are superimposed and compressed. The present invention relates to a method for manufacturing a 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、けい酸カルシウム板、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 adhered to the softwood material may be any plate material such as hard board, MDF, calcium carbonate plate, calcium silicate plate, metal plate and the like.
【０００７】また、イソシアネート基を含む化合物とし
ては、ＴＤＩ、ＭＤＩ、ＨＤＩ、ＸＤＩなどのイソシア
ネートや、湿気硬化型ウレタン樹脂のように分子中に２
個以上のイソシアネート基を持つ化合物があり、イソシ
アネート基と反応しうる化合物としては脂肪族第一アミ
ン、芳香族アミン、脂肪族第二アミン、一級アルコー
ル、二級アルコール、三級アルコール、フェノール、ウ
レタン、カルボン酸、カルボン酸アミド、水等活性水素
を含む化合物がある。なお、二枚の板材のどちらにイソ
シアネート基を含む化合物あるいはイソシアネート基と
反応しうる化合物を塗布するかは、板材の吸水性とイソ
シアネート基を含む化合物、イソシアネート基と反応し
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。As the compound containing an isocyanate group, isocyanates such as TDI, MDI, HDI, and XDI, and moisture-curable urethane resins having 2 in the molecule are used.
There are compounds having more than one isocyanate group, and as the compound capable of reacting with the isocyanate group, aliphatic primary amine, aromatic amine, aliphatic secondary amine, primary alcohol, secondary alcohol, tertiary alcohol, phenol, urethane , Carboxylic acids, carboxylic acid amides, water, and other compounds containing active hydrogen. In addition, whether the compound containing an isocyanate group or the compound capable of reacting with an isocyanate group is applied to which of the two plate materials is determined by considering the water absorption of the plate material and the compound containing an isocyanate group, and the viscosity of the compound capable of reacting with an isocyanate group. Can be decided by
In most cases it doesn't matter.
【０００８】イソシアネート基を含む化合物としては、
非乳化型のイソシアネート基を含む化合物でもよいが、
界面活性剤により変性した水乳化性イソシアネートのよ
うに自己乳化型のイソシアネート基を含む化合物であっ
てもよい。また、湿気硬化型ウレタン樹脂にＴＤＩ、Ｍ
ＤＩ等のイソシアネート化合物を添加したものでももち
ろんよい。As the compound containing an isocyanate group,
Although it may be a compound containing a non-emulsifying type isocyanate group,
It may be a compound containing a self-emulsifying isocyanate group such as a water-emulsifiable isocyanate modified with a surfactant. In addition, moisture-curable urethane resin can be added to TDI, M
It is of course possible to add an isocyanate compound such as DI.
【０００９】次にイソシアネート基と反応しうる化合物
としては、変性酢酸ビニルのように水性エマルジョンに
活性水素を導入したものや、ポリビニルアルコール、ポ
リエチレンオキサイド等のように活性水素を有する水溶
性高分子がある。また、上記水性エマルジョンや、水溶
性高分子にアミン類や有機金属化合物等の硬化触媒（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。このように水性エマルジ
ョンや、水溶性高分子を使用すれば、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。Next, as a compound capable of reacting with an isocyanate group, a compound obtained by introducing active hydrogen into an aqueous emulsion such as modified vinyl acetate, or a water-soluble polymer having active hydrogen such as polyvinyl alcohol or polyethylene oxide is used. is there. Further, it is also possible to add a curing catalyst (curing accelerator) such as amines and organic metal compounds to the above aqueous emulsion or water-soluble polymer. Examples of amines include triethylamine, tetramethylguanidine, triethylenediamine, dimethylaminoethanol and the like, and examples of organometallic compounds include dibutyltin dilaurate, stannas octoace, dibutyltin carboxylate and lead octenoate. By using an aqueous emulsion or a water-soluble polymer in this way, it is not necessary to use an organic solvent, which is useful for improving the working environment.
【００１０】[0010]
【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、圧締時間も大巾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。EFFECTS OF THE INVENTION Since the present invention is constructed as described above, the warpage of the composite plate can be greatly reduced in manufacturing the composite plate, and the pressing time can be greatly shortened. Therefore, if necessary, continuous pressing can be performed, and thermal compression by high temperature is not required, which saves energy consumption.
【００１１】[0011]
【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12mm
の針葉樹合板の表面に 150／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 3mmＭＤＦ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 type isocyanate compound was stirred and dispersed in 1 part by weight of water, and the resulting dispersion had a thickness of 12 mm.
150 / m 2 on the surface of plywood of softwood. On the other hand, an aqueous emulsion with a functional group is applied to the back side of a 3 mm thick MDF.
After applying 100 g / m 2 and cooling at a pressure of 5 kgf / cm 2 for 90 seconds, curing was carried out for 1 day to obtain a desired composite board. The normal adhesive strength of this composite plate was 31.2 kgf / cm 2 (wood breaking ratio 100%), and the boiling repeated adhesion strength was 28.1 kgf / cm 2 (wood breaking ratio 100%). A wood breaking rate of 100% means that the wood was not broken at the adhesive interface.
【００１２】[0012]
【実施例２】実施例１の自己乳化型のイソシアネート化
合物と水とを攪拌した分散液の代わりに湿気硬化型ウレ
タン樹脂を使用した以外は実施例１と同様にして所望の
複合板を得た。この複合板の常態接着力は 32.0kgf／cm
2 （木破率 100％）で、煮沸繰り返し接着力は 28.3kgf
／cm2 （木破率 100％）であった。Example 2 A desired composite plate was obtained in the same manner as in Example 1 except that a moisture-curable urethane resin was used instead of the dispersion obtained by stirring the self-emulsifying isocyanate compound and water in Example 1. . The normal adhesive strength of this composite board is 32.0kgf / cm
2 (100% wood breaking rate), the adhesive strength after repeated boiling is 28.3kgf
It was / cm 2 (wood breaking rate 100%).
【００１３】[0013]
【実施例３】実施例１の自己乳化型のイソシアネート化
合物と水とを攪拌した分散液の代わりに湿気硬化型ウレ
タン樹脂 100重量部にクルードなＭＤＩ50重量部を攪拌
混合したものを使用した以外は実施例１と同様にして所
望の複合板を得た。この複合板の常態接着力は 31.5kgf
／cm2 （木破率 100％）煮沸繰り返し接着力は 27.9kgf
／cm2 （木破率 100％）であった。Example 3 The procedure of Example 1 was repeated except that 100 parts by weight of a moisture-curing urethane resin was mixed with 50 parts by weight of crude MDI instead of the dispersion of the self-emulsifying isocyanate compound and water which were stirred. A desired composite plate was obtained in the same manner as in Example 1. The normal adhesive strength of this composite board is 31.5 kgf.
/ Cm 2 (100% wood breaking rate) Repeated boiling and adhesion is 27.9kgf
It was / cm 2 (wood breaking rate 100%).
【００１４】[0014]
【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] An attempt was made to obtain a composite plate in the same manner as in Practical Example 1 using aqueous vinyl urethane as an adhesive, but no adhesion could be obtained.
【００１５】[0015]
【実施例４】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 4 A desired composite plate was obtained by using a 6 mm thick calcium silicate plate instead of the MDF of Example 1.
【００１６】[0016]
【実施例５】実施例２のＭＤＦの代わりに厚さ 0.5mmの
鉄板を使用して所望の複合板を得た。Example 5 A desired composite plate was obtained by using an iron plate having a thickness of 0.5 mm instead of the MDF of Example 2.
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
面にイソシアネート基を含む化合物を塗布するととも
に、他方の板材の片面にイソシアネート基と反応しうる
化合物を塗布した後、上記イソシアネート基を含む化合
物を塗布した面とイソシアネート基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。1. When joining two plate materials, at least one of which is a softwood material, with an adhesive, a compound containing an isocyanate group is applied to one surface of one plate material and an isocyanate group is applied to one surface of the other plate material. After the application of a compound capable of reacting with the compound, the surface coated with the compound containing an isocyanate group and the surface coated with the compound capable of reacting with an isocyanate group are overlapped and pressed, which is a method for producing a composite plate. .
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 true JPH0671812A (en) | 1994-03-15 |
| JP2779885B2 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) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159602A (en) * | 1981-03-27 | 1982-10-01 | Juken Sangyo | Manufacture of decorative board for building |
| 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
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159602A (en) * | 1981-03-27 | 1982-10-01 | Juken Sangyo | Manufacture of decorative board for building |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2779885B2 (en) | 1998-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Grøstad et al. | Emulsion polymer isocyanates as wood adhesive: a review | |
| KR100967730B1 (en) | Two-part polyurethane adhesives for structural finger joints and method therefor | |
| KR100591366B1 (en) | Adhesives | |
| BR0113451A (en) | Moisture Curable One-component Polyurethane Adhesive Method for bonding two substrates using such an adhesive | |
| JPS61291613A (en) | Polyisocyanate composition and aqueous adhesive composition | |
| DE69623817D1 (en) | CURABLE ONE-COMPONENT POLYURETHANE ADHESIVES | |
| CN106634714A (en) | Adhesive for plywood and preparation method thereof | |
| JP2010522100A (en) | Particle aggregation method used in the field of wood and cork | |
| JPH0671812A (en) | Manufacture of composite board | |
| EP0419477A1 (en) | A method for the production of wood products | |
| US20080098668A1 (en) | Systems for Attaching Wood Products | |
| JP2597782B2 (en) | Veneered veneer | |
| JP3274155B2 (en) | Manufacturing process of sandwich structure panel | |
| JP3043988B2 (en) | Manufacturing method of wood veneer | |
| JP2000037802A (en) | Production of large area laminate | |
| JPH07247624A (en) | Building panel | |
| CA2360109A1 (en) | Moisture-activated adhesive compositions | |
| JP2003253236A (en) | Adhesive composition | |
| EP1161508A1 (en) | Moisture-activated adhesive compositions | |
| JPS5887172A (en) | Aqueous polyisocyanate adhesive | |
| JP2000071366A (en) | Osb panel and its production | |
| EP1161509A1 (en) | Moisture-activated adhesive compositions | |
| JPS60238377A (en) | Adhesive for wet wood | |
| JPH043882B2 (en) | ||
| JPS61281137A (en) | Production of plywood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980324 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080515 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090515 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100515 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100515 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110515 Year of fee payment: 13 |
|
| LAPS | Cancellation because of no payment of annual fees |