JPH06312405A - Manufacture of wood laminate - Google Patents
Manufacture of wood laminateInfo
- Publication number
- JPH06312405A JPH06312405A JP12326393A JP12326393A JPH06312405A JP H06312405 A JPH06312405 A JP H06312405A JP 12326393 A JP12326393 A JP 12326393A JP 12326393 A JP12326393 A JP 12326393A JP H06312405 A JPH06312405 A JP H06312405A
- Authority
- JP
- Japan
- Prior art keywords
- laminated body
- veneers
- steam
- veneer
- press
- 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
- 239000002023 wood Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000002648 laminated material Substances 0.000 claims description 25
- 239000012790 adhesive layer Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000002759 woven fabric Substances 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 35
- 230000001070 adhesive effect Effects 0.000 description 34
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 241000218645 Cedrus Species 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- KQEIJFWAXDQUPR-UHFFFAOYSA-N 2,4-diaminophenol;hydron;dichloride Chemical compound Cl.Cl.NC1=CC=C(O)C(N)=C1 KQEIJFWAXDQUPR-UHFFFAOYSA-N 0.000 description 5
- DGXAGETVRDOQFP-UHFFFAOYSA-N 2,6-dihydroxybenzaldehyde Chemical compound OC1=CC=CC(O)=C1C=O DGXAGETVRDOQFP-UHFFFAOYSA-N 0.000 description 4
- 238000013329 compounding Methods 0.000 description 4
- 240000005109 Cryptomeria japonica Species 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- PBJAGWWZNLGYDB-UHFFFAOYSA-N fordianol Natural products CCCCCCCC1=C(O)C(OC)=CC(O)=C1C=O PBJAGWWZNLGYDB-UHFFFAOYSA-N 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000000123 paper Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 235000007173 Abies balsamea Nutrition 0.000 description 1
- 244000283070 Abies balsamea Species 0.000 description 1
- 241001337993 Agathis <wasp> Species 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 241000219495 Betulaceae Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 241000721662 Juniperus Species 0.000 description 1
- 235000014556 Juniperus scopulorum Nutrition 0.000 description 1
- 235000014560 Juniperus virginiana var silicicola Nutrition 0.000 description 1
- 241000218652 Larix Species 0.000 description 1
- 235000005590 Larix decidua Nutrition 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 235000013431 Pinus clausa Nutrition 0.000 description 1
- 235000000773 Pinus glabra Nutrition 0.000 description 1
- 241001502813 Pinus glabra Species 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 235000008691 Sabina virginiana Nutrition 0.000 description 1
- 235000015392 Sesbania grandiflora Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- HNPDNOZNULJJDL-UHFFFAOYSA-N ethyl n-ethenylcarbamate Chemical compound CCOC(=O)NC=C HNPDNOZNULJJDL-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- CGXBXJAUUWZZOP-UHFFFAOYSA-N formaldehyde;phenol;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.OC1=CC=CC=C1.NC1=NC(N)=NC(N)=N1 CGXBXJAUUWZZOP-UHFFFAOYSA-N 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000001520 savin Nutrition 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Finished Plywoods (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、木質積層材の製造方法
に関し、特に、単板に接着剤を塗布積層後、蒸気噴射型
プレス内に挿入し、積層面に対する側面から高圧蒸気を
接着層に導入して内部温度を昇温させた後、上下熱盤で
圧締して接着一体化させる木質積層材の製造方法におけ
る好適な熱圧技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a wood laminated material, and in particular, after applying an adhesive agent to a single plate and laminating it, it is inserted into a steam injection type press and high pressure steam is applied from the side surface to the laminating surface. The present invention relates to a suitable hot-pressing technique in a method for manufacturing a wood laminated material in which the internal temperature is raised to raise the internal temperature, and then the upper and lower hot plates are pressed to bond and integrate them.
【０００２】[0002]
【従来の技術】従来、単板に接着剤を塗布し、当該単板
を複数枚積層し、仮圧締後、ホットプレス若しくは連続
プレスの上下熱盤内に挿入して、加熱圧締して接着一体
化させる製造法がある。しかし、当該方法では、加熱圧
締工程に長時間を要し、生産性が低いという欠点があ
り、特に厚物の製造に際しては顕著である。即ち、通常
のホットプレス若しくは連続プレスでは、上下熱盤から
の加熱となるため、熱の伝達が積層板表裏から内部へと
行われ、接着剤硬化のための昇温が積層板表裏から内部
へと行われることになり、その結果、単板積層枚数が多
くなればなるほど、積層板最深接着層への熱の伝達に時
間がかかり、全接着層が硬化するまで積層板をプレス熱
盤間で圧締したままの状態を長時間にわたって保たねば
ならず、非効率的である。硬化時間を速めるため、プレ
ス熱盤温度を上げても、積層板内部の接着層への昇温ス
ピードは大幅に改善されず、むしろ、単板の変色やパン
ク等が発生し問題を生じる。2. Description of the Related Art Conventionally, a single plate is coated with an adhesive, a plurality of the single plates are laminated, temporarily pressed and then inserted into the upper and lower hot plates of a hot press or a continuous press, and heated and pressed. There is a manufacturing method in which adhesion and integration are performed. However, this method has a drawback in that the heating and pressing process requires a long time and the productivity is low, which is particularly remarkable in the production of thick products. That is, in a normal hot press or continuous press, since heating is performed from the upper and lower heating plates, heat is transferred from the front and back of the laminated plate to the inside, and the temperature rise for curing the adhesive from the front and back of the laminated plate to the inside. As a result, as the number of laminated veneers increases, it takes more time to transfer heat to the deepest adhesive layer of the laminated plate, and the laminated plate is pressed between the press heating plates until the entire adhesive layer is cured. It is inefficient because it has to be kept in a pressed state for a long time. Even if the temperature of the press heating platen is increased to accelerate the curing time, the temperature rising rate to the adhesive layer inside the laminated plate is not significantly improved, but rather discoloration or puncture of the single plate occurs, which causes a problem.
【０００３】圧締の際に側面から高圧蒸気を導入して材
料内部を加熱する技術の利用により、原材料として木材
小片や木材繊維マットを用いるような場合には、生産性
を改善することができるが、ＬＶＬ（Ｌａｍｉｎａｔｅ
ｄ Ｖｅｎｅｅｒ Ｌｕｍｂｅｒ）のように接着層が
密着している場合には、蒸気の均一な拡散には困難をと
もない、接着層の均一加熱は非常に困難で、接着層への
熱エネルギーの迅速な供給と接着剤の硬化促進には問題
がある。The productivity can be improved in the case of using small pieces of wood or wood fiber mat as the raw material by utilizing the technique of introducing high pressure steam from the side during pressing to heat the inside of the material. But LVL (Laminate
When the adhesive layer is in close contact with the adhesive layer (e.g. d Veneer Lumber), it is difficult to evenly diffuse the vapor, and uniform heating of the adhesive layer is very difficult, and rapid supply of heat energy to the adhesive layer. There is a problem in accelerating the curing of the adhesive.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、かかる従来
技術の欠点を解消し、側面から高圧蒸気を導入する加熱
技術の改良を図り、全接着層への均一な温度上昇を図る
ことが可能で、接着層の硬化を均等に行うことができ、
接着硬化時間の短縮化が可能となり、したがって、木質
積層材製造の際の接着硬化させるための圧締時間を大幅
に短縮し、しかも、従来のバッチ式に加わるに連続生産
化も可能な効率的なプレス方式を提供することを目的と
する。本発明の他の目的および新規な特徴は以下の明細
書および添付図面からも明らかになるであろう。DISCLOSURE OF THE INVENTION The present invention solves the drawbacks of the prior art, improves the heating technique for introducing high-pressure steam from the side, and enables uniform temperature rise to all adhesive layers. With this, the adhesive layer can be cured evenly,
Adhesive curing time can be shortened. Therefore, the pressing time for adhesive curing at the time of manufacturing wood laminated materials can be significantly shortened, and moreover, in addition to the conventional batch type, continuous production is also efficient. The purpose is to provide a simple press system. Other objects and novel features of the present invention will be apparent from the following specification and the accompanying drawings.
【０００５】[0005]
【課題を解決するための手段】本発明は、凹凸単板また
は蒸気通過用材を単板間に介在させた積層体を蒸気噴射
型プレス内に挿入し、蒸気を当該積層体の側面からその
接着剤層に導入し内部温度を上昇させ、上下熱盤で当該
積層体を圧締し、当該積層体中の接着剤層を硬化させ、
接着一体化させることを特徴とする木質積層材の製造方
法に係るものである。According to the present invention, a concavo-convex veneer or a laminate in which a steam passage material is interposed between veneers is inserted into a steam injection type press, and steam is adhered from the side surface of the laminate. Introduce into the agent layer to raise the internal temperature, press the laminate with the upper and lower heating plates, and cure the adhesive layer in the laminate,
The present invention relates to a method for manufacturing a wood laminated material, which is characterized by bonding and integrating.
【０００６】次に、本発明による木質積層材の製造方法
について、連続プレスを例にとって詳述する。本発明で
使用される側面蒸気噴射型連続プレスおよびそれによる
側面蒸気噴射連続プレス方法の一例について説明する
と、当該プレス１は、図１に示すように、挿入コンベヤ
２と上部アイドルロール３と上部テンションロール４と
下部アイドルロール５と下部テンションロール６とベル
ト７と蒸気噴射板８と上下熱盤（熱板）９、１０とベル
ト挟みプレス１１とを具備して成り、挿入コンベヤ２か
ら供されてきた積層体１２を、上部アイドルロール３と
上部テンションロール４との間および下部アイドルロー
ル５と下部テンションロール６との間にそれぞれ掛設さ
れたベルト７、７により連続的に移送しつつ、積層体１
２が蒸気噴射板８を通過する際に、この蒸気噴射板８の
多数の蒸気噴射孔から積層体１２の側面に高圧の飽和ま
たは過加熱水蒸気を噴射し、積層体１２内部を温度上昇
させ、次いで、当該熱板９、１０により積層体１２を熱
圧締し、積層体１２内部の接着剤を硬化させ、一体化さ
せて木質積層材とする。図２は、蒸気噴射板８の多数の
蒸気噴射孔から積層体１２の側面に高圧蒸気を噴射する
様子を示したもので、蒸気噴射板８におけるコック１３
のオン（開き）、オフ（閉じ）により蒸気噴射を好適な
ものに調節しつつ、ベルト７上の積層体１２の側面に高
圧の飽和または過加熱水蒸気１４を噴射する。Next, the method for manufacturing a wood laminated material according to the present invention will be described in detail by taking a continuous press as an example. An example of the side surface steam jet type continuous press used in the present invention and the side surface steam jet type continuous press method using the same will be described. The press 1 includes an insertion conveyor 2, an upper idle roll 3 and an upper tension, as shown in FIG. It is provided with a roll 4, a lower idle roll 5, a lower tension roll 6, a belt 7, a steam injection plate 8, upper and lower heating plates (heating plates) 9, 10 and a belt pinching press 11, and is provided from the insertion conveyor 2. The laminated body 12 is continuously transferred by the belts 7, 7 hung between the upper idle roll 3 and the upper tension roll 4 and between the lower idle roll 5 and the lower tension roll 6, respectively, and laminated. Body 1
When 2 passes through the steam injection plate 8, high-pressure saturated or overheated steam is injected from the many steam injection holes of the steam injection plate 8 to the side surface of the laminated body 12 to raise the temperature inside the laminated body 12, Next, the laminated body 12 is heat-pressed by the hot plates 9 and 10, and the adhesive inside the laminated body 12 is cured and integrated to form a wood laminated material. FIG. 2 shows a state in which high-pressure steam is injected from the many steam injection holes of the steam injection plate 8 to the side surface of the laminate 12, and the cock 13 in the steam injection plate 8 is shown.
The high-pressure saturated or overheated steam 14 is injected to the side surface of the laminate 12 on the belt 7 while adjusting the steam injection to a suitable one by turning on (opening) and turning off (closing).
【０００７】本発明で使用される凹凸単板は、例えば、
単板をホットプレスやローラプレス等を使用して圧縮成
型することにより得ることができる。また、切削加工等
の方法によって凹凸を付与するようにしてもよい。凹凸
の形状は連続的に通気孔を形成するものであれば、波
型，Ｕ字型，編目型などいずれの形状でもよい。また、
クロス・バンド層の場合は、刃物またはローラーを用い
て上記に類する通気性を与えることが効果的である。The uneven veneer used in the present invention is, for example,
It can be obtained by compression-molding a single plate using a hot press, a roller press or the like. Moreover, you may make it provide unevenness by methods, such as cutting. The shape of the unevenness may be any shape such as a corrugated shape, a U-shape, and a stitch shape as long as the ventilation holes are continuously formed. Also,
In the case of the cross band layer, it is effective to use a blade or a roller to provide the air permeability similar to the above.
【０００８】本発明で使用される蒸気通過用材の例とし
ては、複数の短冊状木質板を並設したものが挙げられ
る。蒸気通過用材の他の例としては、ネット状物、コル
ゲート状物、織物、編み物、不織布、フェルト等が挙げ
られる。これらは、木材、有機もしくは繊維、紙等から
なり、接着剤を含浸塗布したものでもあるいは接着剤が
含浸塗布されていないものでもよい。An example of the steam passing material used in the present invention is one in which a plurality of strip-shaped wooden boards are arranged in parallel. Other examples of the material for passing steam include net-like material, corrugated material, woven fabric, knitted fabric, non-woven fabric, felt and the like. These are made of wood, organic or fiber, paper, etc., and may be those with an adhesive impregnated and coated, or those without an adhesive impregnated and coated.
【０００９】本発明では、一または二以上の当該凹凸単
板または蒸気通過用材を複数の単板間に介在させる。単
板には接着剤を塗布する。当該接着剤としては、各種の
ものが使用できるが、レゾルシール−ホルムアルデヒド
樹脂接着剤，フェノール−ホルムアルデヒド樹脂接着
剤，メラミン−ホルムアルデヒド樹脂接着剤，メラミン
フェノール−ホルムアルデヒド樹脂接着剤，ユリア−ホ
ルムアルデヒド樹脂接着剤，エポキシ樹脂接着剤，イソ
シアネート樹脂接着剤，水性ビニルウレタン樹脂接着剤
等の熱硬化性樹脂接着剤が好ましい。当該接着剤には、
パラホルムアルデヒド、ヘキサメチレンテトラミン、塩
化アンモニウム、ポリアミン、酸無水物などの硬化剤や
ヤシ殻粉、クルミ殻粉、木粉、小麦粉、大豆粉、炭酸カ
ルシウム、ゼオライト、クレーなどの充填剤やポリビニ
ルアルコール等の増粘剤やエタノール、メタノール、エ
チレングリコールなどのアルコール類等を必要に応じて
配合することが出来る。In the present invention, one or more concave and convex single plates or steam passing materials are interposed between a plurality of single plates. Apply adhesive to the veneer. As the adhesive, various kinds of adhesives can be used, such as resorseal-formaldehyde resin adhesive, phenol-formaldehyde resin adhesive, melamine-formaldehyde resin adhesive, melamine phenol-formaldehyde resin adhesive, urea-formaldehyde resin adhesive, Thermosetting resin adhesives such as epoxy resin adhesives, isocyanate resin adhesives and water-based vinyl urethane resin adhesives are preferable. The adhesive includes
Curing agents such as paraformaldehyde, hexamethylenetetramine, ammonium chloride, polyamines, acid anhydrides, coconut shell powder, walnut shell powder, wood flour, wheat flour, soybean powder, calcium carbonate, zeolite, clay and other fillers, polyvinyl alcohol, etc. The thickener, alcohols such as ethanol, methanol, ethylene glycol, etc. can be blended as necessary.
【００１０】接着剤を塗布した複数単板を、その中に例
えば接着剤を含浸塗布した凹凸単板、蒸気通過用材を入
れて、堆積する。図３（Ａ）は、使用される凹凸単板の
例を示し、当該単板１５には、例えば、単板をプレス等
を使用して熱圧縮成型することにより形成された凹凸面
を有して成る。図３（Ｂ）は、当該凹凸単板１５を使用
し、単板１７間に介在させた積層体１２の断面例を示
す。また、図４は、複数の短冊状木質板を並設して単板
の大きさとした蒸気通過用材１６を使用した積層体１２
の断面例を示す。当該積層体を前記側面蒸気噴射型連続
プレス１内に挿入し、前記のように高圧蒸気１４を当該
積層体１２の積層面に直交する側面に噴射して当該積層
体１２の側面からその接着剤層に導入し当該積層体１２
の内部温度を上昇させた後、上下熱板９、１０により当
該積層体１２を熱圧締し、当該積層体１２内部の接着剤
を硬化させ、一体化させ連続プレス方式により例えば単
板積層材とする。[0010] A plurality of veneers coated with an adhesive are placed, for example, a concave-convex veneer impregnated with the adhesive and a vapor passage material are put therein. FIG. 3A shows an example of an uneven veneer used, and the veneer 15 has an uneven surface formed by, for example, thermocompressing the veneer using a press or the like. Consists of FIG. 3B shows an example of a cross section of the laminated body 12 using the uneven single plate 15 and interposed between the single plates 17. Further, FIG. 4 shows a laminated body 12 using a vapor passage material 16 in which a plurality of strip-shaped wooden boards are arranged in parallel to have a size of a single plate.
An example of a cross section is shown. The laminated body is inserted into the side surface steam jet type continuous press 1, and the high pressure steam 14 is jetted to the side surface orthogonal to the laminating surface of the laminated body 12 as described above to apply the adhesive from the side surface of the laminated body 12. The layered product 12 introduced into a layer
After raising the internal temperature of the laminated body 12, the upper and lower heating plates 9 and 10 heat-compress the laminated body 12 to cure the adhesive inside the laminated body 12 and integrate them to form a continuous plate, for example, a single plate laminated material. And
【００１１】本発明で使用される単板としては、針葉
樹，広葉樹いずれの材種のものでもよく、針葉樹での代
表的なものとしては、マツ，エゾマツ，トドマツ，カラ
マツ，ベイマツ，ベイツガ，ベイモミ，ホワイトファ
ー，ベイスギ，アガチス，アルダー材等が挙げられ、広
葉樹ではラワンなどの南洋材，カバ，ブナ材などが挙げ
られる。The veneer used in the present invention may be a coniferous tree or a hardwood species, and typical coniferous trees include pine, spruce pine, Todo pine, larch, bay pine, hemlock, bay fir, Examples include white fur, red cedar, agathis, and alder wood, and for hardwood, South Sea wood such as lauan, birch, beech wood, and the like.
【００１２】本発明によれば、凹凸単板１５または蒸気
通過用材１６を単板１７間に介在させた積層体１２を側
面蒸気噴射型連続プレス１内に挿入し、蒸気１４を当該
積層体１２の側面からその接着剤層に導入し内部温度を
上昇させた後、上下熱板９、１０で当該積層体１２を圧
締して接着一体化させる方式を採用したので、蒸気１４
を当該積層体１２の側面からその接着剤層に導入する際
に、単板間に隙間が形成され、蒸気１４の通路をつく
り、噴射蒸気１４を良好に拡散させ、高圧蒸気による接
着層への熱エネルギーの迅速な供給と接着剤の硬化促進
が迅速に行われようになり、全接着層への均一な温度上
昇を図ることが可能となる。従来のホットプレス等の方
式ではプレス熱盤からの加熱であるため、単板積層枚数
が多いほど、接着硬化のためのプレス圧締に長時間を要
するのに対し、本発明によれば、接着層の硬化におい
て、従来方式とは異なり、表裏層のみならず内部の層ま
での全接着層が同時に、しかも均等に硬化し始めるの
で、接着硬化時間の短縮化が可能となる。また、本発明
では、圧締時の加湿加熱によって凹凸単板の凹凸部は元
の厚さに回復できるので、木質積層材の製造に支障を生
じることがなく、また、ネット状物、コルゲート状物、
織物、編み物、不織布、フェルト等の蒸気通過用材を使
用する場合には、木質積層材はこれらにより補強され、
強度的にも高強度の木質積層材を得ることができる。さ
らに、側面蒸気噴射型連続プレスを用いる場合には、連
続プレス方式により木質積層材を連続的に生産化できる
効率的な方式を提供できる。According to the present invention, the laminated body 12 in which the concavo-convex veneer 15 or the steam passage material 16 is interposed between the veneers 17 is inserted into the side surface steam injection type continuous press 1, and the vapor 14 is applied to the laminated body 12. Since the internal temperature is raised by introducing it into the adhesive layer from the side surface of the sheet, and the laminated body 12 is pressure-bonded by the upper and lower heating plates 9 and 10 to bond and integrate, the steam 14
When the is introduced into the adhesive layer from the side surface of the laminate 12, a gap is formed between the single plates, a passage for the steam 14 is created, the jet steam 14 is well diffused, and high pressure steam is applied to the adhesive layer. The rapid supply of heat energy and the acceleration of the curing of the adhesive can be rapidly performed, and it becomes possible to achieve a uniform temperature rise to all the adhesive layers. According to the present invention, since the conventional hot press method is heating from the press heating platen, the larger the number of laminated veneer sheets, the longer the pressing time for press hardening to cure the adhesive. In the layer curing, unlike the conventional method, not only the front and back layers but also all the adhesive layers up to the inner layers start to be cured simultaneously and evenly, so that the adhesive curing time can be shortened. Further, in the present invention, since the uneven portion of the uneven veneer can be restored to the original thickness by humidifying and heating at the time of pressing, it does not hinder the production of the wooden laminated material, and the net-like material and the corrugated material can be obtained. object,
When using steam passing materials such as woven fabric, knitted fabric, non-woven fabric, felt, etc., the wood laminated material is reinforced by these,
It is possible to obtain a wood laminated material having high strength. Further, when the side steam jet type continuous press is used, it is possible to provide an efficient method capable of continuously producing the wood laminated material by the continuous pressing method.
【００１３】[0013]
【実施例】次に、本発明の実施例を示す。 実施例１ スギ単板（厚み３ｍｍ、幅３００ｍｍ、長さ１０００ｍ
ｍ）を熱盤温度１３０℃、圧力３ｋｇ／ｃｍ2、時間３
０秒でプレス圧締して凹凸差２ミリを幅方向に連続的に
つけたスギ凹凸単板とスギ単板（厚み３ｍｍ、幅３００
ｍｍ、長さ１０００ｍｍ）を交互に組み合わせ３９枚と
し、レゾルシノールーホルムアルデヒド樹脂接着剤（大
鹿振興株式会社製；商品名ディアノール３５号、配合
比；ディアノール３５号／Ｄ用硬化剤＝１００／１５）
を単板に塗布（塗布量２５０ｇ／ｍ2）積層後、側面蒸
気噴射型連続プレスに挿入し、圧力１ｋｇ／ｃｍ2で仮
圧締しながら、１００ｍｍの等間隔で側面に取り付けた
蒸気噴射ノズル６個を用いて蒸気圧６ｋｇ／ｃｍ2にて
２分間蒸気噴射した後、圧力１０ｋｇ／ｃｍ2で５分間
圧締することで凹凸単板の凹凸部はもとの厚さ３ミリに
厚さ回復した単板になって接着一体化した木質積層材を
得た。EXAMPLES Next, examples of the present invention will be shown. Example 1 Japanese cedar veneer (thickness 3 mm, width 300 mm, length 1000 m
m) is a heating plate temperature 130 ° C., pressure 3 kg / cm 2 , time 3
A cedar corrugated veneer and a cedar veneer with 2 mm of unevenness continuously applied in the width direction by press-pressing in 0 seconds (thickness 3 mm, width 300
mm, length 1000 mm) are alternately combined to form 39 sheets, and a resorcinol-formaldehyde resin adhesive (manufactured by Oshika Shinko Co., Ltd .; trade name: Dianol No. 35, compounding ratio; curing agent for Dianol No. 35 / D = 100/15) )
Is applied to a single plate (coating amount: 250 g / m 2 ) and laminated into a side-face steam injection type continuous press, and while temporarily pre-pressing at a pressure of 1 kg / cm 2 , a steam injection nozzle attached to the side surface at equal intervals of 100 mm. After spraying steam for 6 minutes at a steam pressure of 6 kg / cm 2 using 6 pieces, and then pressing at a pressure of 10 kg / cm 2 for 5 minutes, the uneven part of the uneven veneer has the original thickness of 3 mm. A restored wood veneer was obtained as a wood laminated material that was bonded and integrated.
【００１４】実施例２ スギ単板（厚み３ｍｍ、幅３００ｍｍ、長さ１０００ｍ
ｍ）３１枚と、直径が１ｍｍで、６メッシュのガラス繊
維シート（幅３０ｍｍ、長さ１０００ｍｍ）３０枚を交
互に組み合わせ、レゾルシノールーホルムアルデヒド樹
脂接着剤（大鹿振興株式会社製；商品名ディアノール３
５号、配合比；ディアノール３５号／Ｄ用硬化剤＝１０
０／１５）をスギ単板に塗布（塗布量２５０ｇ／ｍ2、
両面）積層後、側面蒸気噴射型連続プレスに挿入し、圧
力１ｋｇ／ｃｍ2で仮圧締しながら、１００ｍｍの等間
隔で側面に取り付けた蒸気噴射ノズル６個を用いて蒸気
圧６ｋｇ／ｃｍ2にて２分間蒸気噴射した後、圧力１０
ｋｇ／ｃｍ2で５分間圧締することで、単板とガラス繊
維シートが接着一体化した木質積層材を得た。Example 2 Sugi veneer (thickness 3 mm, width 300 mm, length 1000 m
m) 31 sheets and 30 sheets of 6 mesh glass fiber sheet (width 30 mm, length 1000 mm) having a diameter of 1 mm are alternately combined to form a resorcinol-formaldehyde resin adhesive (manufactured by Oshika Shinko Co., Ltd .; trade name Dianol 3).
No. 5, compounding ratio; Dianol No. 35 / D curing agent = 10
0/15) was applied to a cedar veneer (application amount 250 g / m 2 ,
(Both sides) After stacking, insert into a side surface steam injection type continuous press and temporarily press at a pressure of 1 kg / cm 2 , while using 6 steam injection nozzles attached to the side surface at equal intervals of 100 mm, a steam pressure of 6 kg / cm 2. After injecting steam for 2 minutes at a pressure of 10
By pressing at 5 kg / cm 2 for 5 minutes, a wood laminated material in which the veneer and the glass fiber sheet were bonded and integrated was obtained.
【００１５】実施例３ 分子量２００のフェノールーホルムアルデヒド樹脂を含
浸させた後、６０℃で乾燥させた厚さ５ｍｍの樹脂強化
紙段ボールシート（幅３０ｍｍ、長さ１０００ｍｍ）１
５枚を、スギ単板（厚み３ｍｍ、幅３００ｍｍ、長さ１
０００ｍｍ）１６枚と組み合わせした後、レゾルシノー
ルーホルムアルデヒド樹脂接着剤（大鹿振興株式会社
製；商品名ディアノール３５号、配合比；ディアノール
３５号／Ｄ用硬化剤＝１００／１５）を単板に塗布（塗
布量２５０ｇ／ｍ2、両面）積層後、側面蒸気噴射型連
続プレスに挿入し、圧力１ｋｇ／ｃｍ2で仮圧締しなが
ら、１００ｍｍの等間隔で側面に取り付けた蒸気噴射ノ
ズル６個をもちいて蒸気圧６ｋｇ／ｃｍ2にて２分蒸気
噴射した後、圧力１０ｋｇ／ｃｍ2で５分間圧締するこ
とで、単板と樹脂強化紙段ボールシートが接着一体化し
た木質積層材を得た。Example 3 A resin-reinforced paper cardboard sheet (width 30 mm, length 1000 mm) having a thickness of 5 mm, which was impregnated with a phenol-formaldehyde resin having a molecular weight of 200 and then dried at 60 ° C. 1
5 sheets of cedar veneer (thickness 3mm, width 300mm, length 1
(000 mm) 16 sheets, and then combined with a resorcinol-formaldehyde resin adhesive (manufactured by Oshika Shinko Co., Ltd .; trade name Dianol No. 35, compounding ratio; curing agent for Dianol No. 35 / D = 100/15) into a single plate After coating (coating amount: 250 g / m 2 , double-sided), insert into a side surface steam injection type continuous press, and temporarily steam press at a pressure of 1 kg / cm 2 while installing 6 steam injection nozzles on the side surface at equal intervals of 100 mm. after 2 minutes steam injection at a vapor pressure 6 kg / cm 2 using a, by pressing for 5 minutes at a pressure 10 kg / cm 2, to obtain a wood laminated material veneer and resin reinforced paper cardboard sheet is bonded and integrated It was
【００１６】比較例１ 実施例１において、スギ単板（厚み３ｍｍ、幅３００ｍ
ｍ、長さ１０００ｍｍ）を熱盤温度１３０℃、圧力３ｋ
ｇ／ｃｍ2、時間３０秒でプレス圧締して凹凸差２ミリ
を幅方向に連続的につけたスギ凹凸単板を使用しなかっ
た以外は実施例１と同様にして接着一体化した単板積層
材を得たが、噴射蒸気の拡散が悪く、実施例１の場合に
比較して、プレス圧締に約６倍の時間を要した。Comparative Example 1 In Example 1, a cedar veneer (thickness: 3 mm, width: 300 m)
m, length 1000 mm) heating plate temperature 130 ° C., pressure 3 k
A veneer integrally bonded and integrated in the same manner as in Example 1 except that a cedar rugged veneer in which a dent difference of 2 mm was continuously applied in the width direction by press-pressing at g / cm 2 for 30 seconds was used. Although a laminated material was obtained, the diffusion of the jetted vapor was poor, and the pressing time required for pressing was about 6 times longer than that in the case of Example 1.
【００１７】比較例２ 実施例２において、ガラス繊維シートを使用しなかった
以外は実施例２と同様にして接着一体化した単板積層材
を得たが、噴射蒸気の拡散が悪く、実施例２の場合に比
較して、プレス圧締に約６倍の時間を要した。Comparative Example 2 A single plate laminated material integrally bonded and integrated was obtained in the same manner as in Example 2 except that the glass fiber sheet was not used. Compared to the case of No. 2, it took about 6 times as long as the press clamping.
【００１８】比較例３ スギ単板（厚み３ｍｍ、幅３００ｍｍ、長さ１０００ｍ
ｍ）３９枚に、レゾルシノールーホルムアルデヒド樹接
着剤（大鹿振興株式会社製；商品名ディアノール３５
号、配合比；ディアノール３５号／Ｄ用硬化剤＝１００
／１５）を塗布（塗布量２５０ｇ／ｍ2、両面）し、積
層後、ホットプレスに挿入し、温度１３０℃、圧力１ｋ
ｇ／ｃｍ2、時間２０分の熱圧条件にて成型したが、ホ
ットプレス熱盤から搬出した単板積層材は各部の接着層
が剥離しており、最深接着層に近付くにつれて内部の温
度上昇は低く、最深接着層の温度は常温に近かった。Comparative Example 3 Sugi veneer (thickness 3 mm, width 300 mm, length 1000 m
m) 39 sheets with resorcinol-formaldehyde resin adhesive (manufactured by Oshika Shinko Co., Ltd .; trade name Dianol 35)
No., compounding ratio; curing agent for Dianol No. 35 / D = 100
/ 15) is applied (applied amount 250 g / m 2 , both sides), laminated and then inserted into a hot press, temperature 130 ° C., pressure 1 k
It was molded under the heat and pressure condition of g / cm 2 for 20 minutes, but the adhesive layer of each part was peeled off in the veneer laminated material carried out from the hot press hot platen, and the internal temperature rises as it approaches the deepest adhesive layer. Was low, and the temperature of the deepest adhesive layer was close to room temperature.
【００１９】[0019]
【発明の効果】本発明によれば、接着層への熱エネルギ
ーの迅速な供給が図られ、全接着層への均一な温度上昇
を図ることが可能となり、接着剤の硬化促進が迅速に行
われ、接着硬化時間の短縮化が可能となる。また、連続
プレス方式を用いることにより木質積層材を連続的に生
産できるより効率的な方式を提供できる。さらに、強度
的にも高強度の木質積層材を得ることができる。本発明
は、単板積層材の他、ひき板を用いる集成材にも適用で
きる。EFFECTS OF THE INVENTION According to the present invention, the heat energy can be rapidly supplied to the adhesive layer, the temperature can be uniformly increased to all the adhesive layers, and the curing of the adhesive can be accelerated quickly. It is possible to shorten the adhesive curing time. Further, by using the continuous pressing method, it is possible to provide a more efficient method capable of continuously producing a wooden laminated material. Further, it is possible to obtain a wood laminated material having high strength. The present invention can be applied not only to a single-plate laminated material but also to a laminated material using a sawn plate.
【図１】本発明で使用される側面蒸気噴射型連続プレス
の一例説明図、FIG. 1 is an explanatory view showing an example of a side steam jet type continuous press used in the present invention,
【図２】本発明における側面蒸気噴射の一例説明図、FIG. 2 is an explanatory view of an example of side surface steam injection according to the present invention,
【図３】（Ａ）は本発明で使用される単板の一例説明
図、（Ｂ）は同単板使用の積層態様の一例説明図、FIG. 3A is an explanatory view of an example of a single plate used in the present invention, and FIG. 3B is an explanatory view of an example of a laminated mode using the same single plate;
【図４】本発明における他の積層態様の一例説明図、FIG. 4 is an explanatory view showing an example of another stacking mode in the present invention,
１・・・側面蒸気噴射型連続プレス ２・・・挿入コンベヤ ３・・・上部アイドルロール ４・・・上部テンションロール ５・・・下部アイドルロール ６・・・下部テンションロール ７・・・ベルト ８・・・蒸気噴射板 ９・・・上熱板 １０・・・下熱板 １１・・・ベルト挟みプレス １２・・・積層体 １３・・・蒸気噴射板８におけるコック １４・・・蒸気 １５・・・凹凸単板 １６・・・蒸気通過用材 １７・・・単板 1 ... Side steam jet type continuous press 2 ... Inserting conveyor 3 ... Upper idle roll 4 ... Upper tension roll 5 ... Lower idle roll 6 ... Lower tension roll 7 ... Belt 8 ... Steam injection plate 9 ... Upper heating plate 10 ... Lower heating plate 11 ... Belt sandwiching press 12 ... Layered body 13 ... Cock in steam injection plate 8 14 ... Steam 15. .... Veneer with irregularities 16 ... Steam passing material 17 ... Veneer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 川井 秀一 京都府京都市伏見区深草谷口町70番地の35 (72)発明者 佐々木 光 京都府宇治市木幡南山13−76 (72)発明者 白井 文朗 大阪府伊丹市寺本５丁目114の１−414 (72)発明者 乾 久郎 大阪府八尾市堤町２丁目16−３ ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuichi Kawai 35, 70, Fukakusa-taniguchi-cho, Fushimi-ku, Kyoto-shi, Kyoto (72) Inventor Hikaru Sasaki 13-76 (72) Inventor, Fumio Shirai 1-414, 5-114, Teramoto, Itami-shi, Osaka (72) Inventor Hisaro Inui, 2-16-3, Tsutsumi-cho, Yao-shi, Osaka
Claims (4)
在させた積層体を蒸気噴射型プレス内に挿入し、蒸気を
当該積層体の側面からその接着剤層に導入し内部温度を
上昇させ、上下熱盤で当該積層体を圧締し、当該積層体
中の接着剤層を硬化させ、接着一体化させることを特徴
とする木質積層材の製造方法。Claims: 1. A concavo-convex veneer or a laminate in which a steam passage material is interposed between veneers is inserted into a steam injection type press, and steam is introduced into the adhesive layer from the side surface of the laminate to adjust the internal temperature. A method for manufacturing a wood laminated material, which comprises raising and pressing the laminate with upper and lower heating plates to cure the adhesive layer in the laminate to bond and integrate them.
り得られたものである、請求項１に記載の木質積層材の
製造方法。2. The method for manufacturing a wood laminated material according to claim 1, wherein the uneven veneer is obtained by compression-molding the veneer.
設したものである、請求項１に記載の木質積層材の製造
方法。3. The method for producing a wood laminated material according to claim 1, wherein the steam passage material is a plurality of strip-shaped wood boards arranged in parallel.
状物、織物、編み物あるいは不織布からなる、請求項１
に記載の木質積層材の製造方法。4. The vapor passing material comprises a net-like material, a corrugated material, a woven fabric, a knitted fabric or a non-woven fabric.
The method for producing a wood laminated material according to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12326393A JP3376397B2 (en) | 1993-04-28 | 1993-04-28 | Method of manufacturing wood laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12326393A JP3376397B2 (en) | 1993-04-28 | 1993-04-28 | Method of manufacturing wood laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06312405A true JPH06312405A (en) | 1994-11-08 |
| JP3376397B2 JP3376397B2 (en) | 2003-02-10 |
Family
ID=14856241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12326393A Expired - Fee Related JP3376397B2 (en) | 1993-04-28 | 1993-04-28 | Method of manufacturing wood laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3376397B2 (en) |
-
1993
- 1993-04-28 JP JP12326393A patent/JP3376397B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3376397B2 (en) | 2003-02-10 |
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