JPH10305409A - Board made of grass lignin and manufacture thereof - Google Patents
Board made of grass lignin and manufacture thereofInfo
- Publication number
- JPH10305409A JPH10305409A JP14837897A JP14837897A JPH10305409A JP H10305409 A JPH10305409 A JP H10305409A JP 14837897 A JP14837897 A JP 14837897A JP 14837897 A JP14837897 A JP 14837897A JP H10305409 A JPH10305409 A JP H10305409A
- Authority
- JP
- Japan
- Prior art keywords
- board
- lignin
- lignocellulosic
- weight
- substance
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、木材、草本類等の
リグノセルロース物質を基材としたパーティクルボー
ド、ファイバーボード等のボード及びその製造方法に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board, such as a particle board or a fiber board, based on a lignocellulosic substance such as wood, herbaceous plants, and a method for producing the same.
【０００２】[0002]
【従来の技術】従来のリグノセルロース物質を基材とす
るボードは、合成樹脂接着剤を使用しており、自然界で
分解されない、燃えた時に有害ガスが発生する等の問題
があった。また、一部の特殊な種類のボードを除き、尿
素樹脂、メラミン樹脂、フェノール樹脂等、いずれもホ
ルムアルデヒドを原料とする接着剤が使用されており、
人体への危険性が指摘されている。2. Description of the Related Art A conventional board based on a lignocellulose material uses a synthetic resin adhesive, and has problems such as being not decomposed in nature and generating harmful gas when burned. Also, except for some special types of boards, urea resin, melamine resin, phenol resin, etc., all use formaldehyde as an adhesive,
Danger to the human body has been pointed out.
【０００３】それに対し、リグノセルロース物質を基材
とするボードを、合成樹脂接着剤を使用しないで製造す
る方法として、植物系成分を接着剤の代替に使用する試
みがある。On the other hand, as a method for producing a board based on a lignocellulose substance without using a synthetic resin adhesive, there is an attempt to use a plant component as a substitute for the adhesive.
【０００４】例えば、特公平３−３１５６５号公報に
は、糖または澱粉を添加して水蒸気処理をほどこすボー
ドの製造法が開示されている。また、特開昭６０−３０
３０９号公報には、遊離の糖類を多量に含有するリグノ
セルロース物質を原料としたボードの製造法が開示され
ている。[0004] For example, Japanese Patent Publication No. 3-31565 discloses a method for producing a board in which sugar or starch is added and subjected to steam treatment. Also, JP-A-60-30
No. 309 discloses a method for producing a board using a lignocellulose substance containing a large amount of free saccharides as a raw material.
【０００５】特公昭５９−１４３３８号公報には、粉砕
された植物葉を接着剤の代用品とするボードの製造法が
開示されている。[0005] Japanese Patent Publication No. 59-14338 discloses a method for producing a board using crushed plant leaves as a substitute for an adhesive.
【０００６】また、稙物系成分としてリグニンを使用す
る方法が、上記特公平３−３１５６５号公報に開示され
ている。但し、この方法は 糖または澱粉の添加を不可
欠とする。A method using lignin as a plant component is disclosed in Japanese Patent Publication No. 3-31565. However, this method requires the addition of sugar or starch.
【０００７】しかし、これらの植物系成分を合成樹脂接
着剤の代替とするボードは、合成樹脂接着剤を使用した
ボードに比べると強度性能と耐水性が十分ではなかっ
た。However, boards using these plant-based components as substitutes for synthetic resin adhesives have insufficient strength performance and water resistance as compared with boards using synthetic resin adhesives.
【０００８】本発明者らは、先に、アオイ科靱皮繊維植
物を使用して、接着剤を使用しないで強度性能の優れた
ボードを得た（国際公開番号ＷＯ９６／１９３２８号公
報参照）。しかし、このボードは、耐水性が弱く、また
比重が０．６ｇ／ｃｍ３に満たない軽量のものの強度が
低かった。[0008] The present inventors previously obtained a board having excellent strength performance using a mallow bast fiber plant without using an adhesive (see International Publication No. WO96 / 19328). However, this board had low water resistance, and the strength of a lightweight board having a specific gravity of less than 0.6 g / cm 3 was low.
【０００９】一方、本発明者は、先に、イネ科植物パル
プの廃液を主成分とする接着剤を使用したリグノセルロ
ース系ボードを発明している（国際出願番号ＰＣＴ／Ｊ
Ｐ９６／０３２４０）。On the other hand, the present inventor has previously invented a lignocellulosic board using an adhesive mainly composed of waste liquid of grass pulp (International Application No. PCT / J).
P96 / 03240).
【００１０】[0010]
【発明が解決しようとする課題】本発明は、植物系成分
を使用しかつ合成樹脂接着剤が使用されていないボード
であって、強度性能と耐水性が優れたボードを提供する
ことを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a board which uses a plant-based component and does not use a synthetic resin adhesive, and which has excellent strength performance and water resistance. I do.
【００１１】[0011]
【課題を解決するための手段】本発明者は、イネ科植物
リグニンがリグノセルロース物質の接着に極めて有利で
あることを見いだした。リグニンは、工業的には、パル
プ廃液からの抽出によって生産されるが、日本及び西欧
諸国のパルプ生産は事実上木材パルプのみであったた
め、従来のリグニンの利用研究は木材リグニンに限られ
ていた。SUMMARY OF THE INVENTION The present inventors have discovered that lignin, a plant of the family Poaceae, is extremely advantageous for the adhesion of lignocellulosic substances. Lignin is industrially produced by extraction from pulp waste liquor, but pulp production in Japan and Western European countries was essentially only wood pulp, so conventional lignin utilization research was limited to wood lignin .
【００１２】本発明者は、鋭意研究により、イネ科植物
リグニンを有効に使用して、優れた強度性能及び耐水性
を有するボードを得た。The present inventors have made intensive studies and obtained a board having excellent strength performance and water resistance by effectively using lignin of the grass family.
【００１３】すなわち、本発明のボードは、リグノセル
ロース物質を加熱加圧して成板したボードであって、接
着剤が添加されておらず、かつ該リグノセルロース物質
の乾燥重量に対してイネ科植物リグニンが０．２〜３０
重量％添加されていることを特徴とするものである。That is, the board of the present invention is a board formed by heating and pressurizing a lignocellulosic substance, to which no adhesive is added, and to a dry weight of the lignocellulosic substance, which is a plant of the Gramineae family. Lignin 0.2-30
% By weight.
【００１４】本発明のボードに使用されるイネ科植物リ
グニンは、稲、麦、竹、さとうきび、アシ、コウリャン
等あらゆるイネ科植物のリグニンが対象となる。The lignin of the Gramineae plant used in the board of the present invention includes lignin of all Gramineae plants such as rice, wheat, bamboo, sugar cane, reed, and Kouryan.
【００１５】かかるイネ科植物リグニンは、イネ科植物
から直接抽出されたものであってももちろん良いが、パ
ルプ廃液から抽出したものが工業的に有利である。パル
プ廃液から抽出したリグニンを使用する場合、蒸解法の
種類は、クラフト法、亜硫酸法、ソーダ法等のいわゆる
ケミカルパルプ化法、セミケミカルパルプ化法、サーモ
メカニカルパルプ化法、有機溶媒法等いずれのものも使
用できる。The lignin of the Gramineae plant may be of course directly extracted from the Gramineous plant, but the one extracted from the waste pulp is industrially advantageous. When using lignin extracted from pulp waste liquor, the type of digestion method is any of so-called chemical pulping method such as kraft method, sulfite method, soda method, semi-chemical pulping method, thermomechanical pulping method, organic solvent method, etc. Can also be used.
【００１６】イネ科植物リグニンの使用量は、基材とな
るリグノセルロース物質の乾燥重量に対して０．２〜３
０重量％、好ましくは２〜１５重量％である。[0016] The amount of lignin used in the gramineous plant is 0.2 to 3 parts by weight based on the dry weight of the lignocellulosic substance used as the substrate.
0% by weight, preferably 2 to 15% by weight.
【００１７】本発明のボードの基材となるリグノセルロ
ース物質は、草本類、木材など、セルロース、ヘミセル
ロース、リグニンを主成分とするあらゆる物質が対象と
なるが、靱皮繊維植物の木質部の使用が好ましく、ケナ
フ及び亜麻の木質部の使用がより好ましい。尚、ここで
言う靱皮繊維植物とは、広義の麻に含まれる、茎部の靱
皮部が長繊維材料となる植物を指す。The lignocellulosic substance used as the base material of the board of the present invention is any substance containing cellulose, hemicellulose and lignin as the main components, such as herbs and wood, but the use of the woody part of the bast fiber plant is preferred. , Kenaf and flax wood are more preferred. In addition, the bast fiber plant mentioned here refers to a plant in which the bast portion of the stem portion is a long fiber material included in hemp in a broad sense.
【００１８】本発明では、リグノセルロース物質として
ケナフの使用が特に好ましいが、ケナフを使用すると比
重が０．２〜０．６ｇ／ｃｍ３という軽量でありながら
強度性能と耐水性の優れたボードが得られる。In the present invention, it is particularly preferable to use kenaf as the lignocellulose material. However, when kenaf is used, a board having excellent strength performance and water resistance while having a lightweight specific gravity of 0.2 to 0.6 g / cm 3 is obtained. can get.
【００１９】上記リグノセルロース物質の形状は、チッ
プ状、フレーク状、繊維状、粉末状等の小片があげられ
るが、これに限定されるものではない。The shape of the lignocellulosic material may be a chip, a flake, a fiber, a powder or the like, but is not limited thereto.
【００２０】本発明のボードは、上記リグノセルロース
物質に上記イネ科植物リグニンを混合し、加熱加圧成形
して製造される。The board of the present invention is produced by mixing the above-mentioned lignocellulosic substance with the above-mentioned lignin of the Gramineae family and molding the mixture under heating and pressure.
【００２１】加熱加圧成形には、通常のホットプレスを
使用すれば良いが、これに限定するものではなく、例え
ば、蒸気噴射プレス、高周波プレス等を使用しても良
い。For the heat and pressure molding, an ordinary hot press may be used, but the present invention is not limited to this. For example, a steam injection press, a high frequency press or the like may be used.
【００２２】成形温度は、１８０〜２５０℃、好ましく
は２１０〜２４０℃である。成形温度が１８０℃を下回
ると、リグニンの熱硬化反応が不十分となるため好まし
くなく、また、成形温度が２５０℃を超えるとリグノセ
ルロース物質の劣化が起こり好ましくない。The molding temperature is from 180 to 250 ° C., preferably from 210 to 240 ° C. If the molding temperature is lower than 180 ° C., the thermosetting reaction of lignin becomes insufficient, which is not preferable. On the other hand, if the molding temperature is higher than 250 ° C., the lignocellulosic substance is deteriorated, which is not preferable.
【００２３】成形時間は、主に目的とするボードの厚
さ、成形温度及び使用するホットプレスの種類によって
異なる。成形圧は、主に目的とするボードの比重と厚さ
及び使用するホットプレスの種類によって異なる。The molding time depends mainly on the desired board thickness, molding temperature and the type of hot press used. The molding pressure mainly depends on the specific gravity and thickness of the target board and the type of hot press used.
【００２４】尚、本発明においては、成形する際にリグ
ノセルロース物質の含水率を１０〜４０％しておくのが
好ましく、１５〜３０％しておくのがより好ましい。ま
た、特に、上記リグノセルロース物質のうちボードの表
層側に位置する乾燥重量で５０重量％のものの含水率を
１５〜６０％にするのが好ましい。上記好ましい含水率
の範囲でイネ科植物リグニンの熱硬化反応が効果的に行
なわれる。尚、本発明における含水率とは、リグノセル
ロース物質の乾燥重量に対する含有する水の重量％を言
う。In the present invention, the water content of the lignocellulosic material is preferably set to 10 to 40%, more preferably 15 to 30%, at the time of molding. In addition, it is particularly preferable that the moisture content of the lignocellulose material having a dry weight of 50% by weight, which is located on the surface layer side of the board, be 15 to 60%. The thermosetting reaction of the lignin of the Gramineae plant is effectively carried out within the above preferable range of the water content. In addition, the water content in the present invention refers to the weight% of the contained water based on the dry weight of the lignocellulosic substance.
【００２５】[0025]
【作用】本発明のリグノセルロース系ボードが優れた性
能を発揮する理由は、イネ科植物リグニンの特殊な構造
にあると考える。The reason why the lignocellulosic board of the present invention exhibits excellent performance is considered to be due to the special structure of lignin of the grass family.
【００２６】木材等イネ科植物以外のリグニンはフェノ
ール骨格のオルソ位にメトキシ基を有するが、イネ科植
物のリグニンにはメトキシ基が存在しない。フェノール
の反応論では、フェノールはオルソ位またはパラ位に反
応活性を有すと言われており、オルソ位にメトキシ基が
存在しないフェノール骨格を持つイネ科植物リグニンは
反応性に富むと考えられる。Lignin other than grasses such as wood has a methoxy group at the ortho-position of the phenol skeleton, but lignin of grasses has no methoxy group. According to the phenol reaction theory, phenol is said to have a reaction activity at the ortho or para position, and lignin having a phenol skeleton having no methoxy group at the ortho position is considered to be highly reactive.
【００２７】また、リグノセルロース物質として靱皮繊
維植物の木質部を使用したものでより優れた性能のボー
ドが得られるのは、かかるイネ科植物のリグニンが靱皮
繊維植物の木質部に含有する遊離の糖類と共縮合反応を
行なうためであると考えられる。The use of the woody part of the bast fiber plant as the lignocellulosic substance can provide a board with better performance because the lignin of the grass family is free of saccharides contained in the woody part of the bast fiber plant. This is presumably because a co-condensation reaction is performed.
【００２８】[0028]
【発明の実施の形態】次に実施例により本発明を更に詳
しく説明するが、本発明はこれによって限定されるもの
ではない。Next, the present invention will be described in more detail by way of examples, which should not be construed as limiting the present invention.
【００２９】なお、本実施例及び比較例ではボードとし
てパーティクルボードの製造を行なったが、基材となる
リグノセルロース物質の小片は、ナイフリングフレーカ
ー（Ｐａｌｌｍａｎ）を使用し、刃出し０．６ｍｍで加
工したフレークを用いた。In this example and the comparative example, a particle board was manufactured as a board. A small piece of a lignocellulose substance as a base material was cut with a knife ring flaker (Pallman) and had a blade of 0.6 mm. The flake processed in the above was used.
【００３０】また、実施例ではイネ科植物リグニンとし
て、ソーダ蒸解法による麦ワラパルプ廃液から抽出した
リグニンの粉末を使用した。また、比較例１及び３で
は、木材リグニンとして、クラフト蒸解法による針葉樹
パルプ廃液から抽出したリグニンの粉末を使用した。In the examples, lignin powder extracted from wheat straw pulp waste liquid by soda digestion was used as the lignin of the grass family. In Comparative Examples 1 and 3, lignin powder extracted from softwood pulp waste liquid by the kraft digestion method was used as wood lignin.
【００３１】又、実施例及び比較例では、ボードの強度
性能を調べるために曲げ強さを、耐水性を調べるために
吸水厚さ膨張率を測定した。曲げ強さは、ＪＩＳ Ａ
５９０８ ５．５に準拠し、５０×２００ｍｍのサイズ
にカットした３本の試験片の測定値の平均値で求めた。
吸水厚さ膨張率は、ＪＩＳ Ａ ５９０８ ５．１０に
準拠し、５０×５０ｍｍのサイズにカットした３本の試
験片の測定値の平均値で求めた。In Examples and Comparative Examples, the bending strength was measured to examine the strength performance of the board, and the expansion rate of the water absorption thickness was measured to examine the water resistance. Bending strength is JIS A
According to 5908 5.5, the average value of the measured values of three test pieces cut into a size of 50 × 200 mm was obtained.
The coefficient of expansion of the water absorption thickness was determined by the average value of the measured values of three test pieces cut to a size of 50 × 50 mm in accordance with JIS A 5908 5.10.
【００３２】以下の実施例１及び比較例１、２は、基材
としてケナフ木質部を使用した比重０．５ｇ／ｃｍ３程
度の軽量のボードに関するものである。The following Example 1 and Comparative Examples 1 and 2 relate to a lightweight board having a specific gravity of about 0.5 g / cm 3 using a kenaf wood part as a base material.
【００３３】実施例１ 乾燥重量で２２０ｇのケナフ木質部の小片に、水を噴霧
して含水率を２５％とした後に、イネ科植物リグニンを
２２ｇ添加し混合した。かかる試料を、２２０ｍｍ角の
フォーミングボックスに手撤きしてマットフォーミング
した後、、５０ｃｍ角の成形可能な電熱ヒーター付油圧
プレスを使用し、１０ｍｍサイズのスペーサーを用い、
温度２２０℃、圧力５０ｋｇｆ／ｃｍ２で、１５分間加
熱加圧することによって本発明のボードを製造した。こ
のボードの比重は０．４９ｇ／ｃｍ３、曲げ強さは１
９．６Ｎ／ｃｍ２、吸水厚さ膨張率は６％であった。Example 1 Water was sprayed to a kenaf wood piece having a dry weight of 220 g to reduce the water content to 25%, and then 22 g of lignin of the grass family was added and mixed. After removing the sample by hand into a 220 mm square forming box and mat forming, using a 50 cm square moldable hydraulic press with an electric heater, using a 10 mm size spacer,
The board of the present invention was manufactured by heating and pressing at a temperature of 220 ° C. and a pressure of 50 kgf / cm 2 for 15 minutes. This board has a specific gravity of 0.49 g / cm 3 and a flexural strength of 1
9.6 N / cm 2 , and the coefficient of expansion of the water absorption thickness was 6%.
【００３４】比較例１ イネ科植物リグニンの変わりに、木材リグニンを使用す
る以外は、実施例１と同じ方法でパーティクルボードを
製造した。このボードの比重は０．５０ｇ／ｃｍ３、曲
げ強さは１４．２Ｎ／ｃｍ２、吸水厚さ膨張率は２３％
であった。Comparative Example 1 Particle board was produced in the same manner as in Example 1 except that wood lignin was used instead of grass lignin. The specific gravity of this board is 0.50 g / cm 3 , the flexural strength is 14.2 N / cm 2 , and the water absorption thickness expansion rate is 23%
Met.
【００３５】比較例２ ケナフ木質部の乾燥重量を２４０ｇとし、リグニンを使
用せず、それ以外は、実施例１と同じ方法でパーティク
ルボードを製造した。このボードの比重は０．４９ｇ／
ｃｍ３、曲げ強さは８．７Ｎ／ｃｍ２、吸水厚さ膨張率
は４２％であった。Comparative Example 2 A particle board was produced in the same manner as in Example 1 except that the dry weight of the kenaf wood part was 240 g, and no lignin was used. The specific gravity of this board is 0.49g /
cm 3 , flexural strength was 8.7 N / cm 2 , and water absorption thickness expansion rate was 42%.
【００３６】以下の実施例２、３と比較例３、４は、基
材として亜麻木質部を使用したボードに関するものであ
る。The following Examples 2 and 3 and Comparative Examples 3 and 4 relate to boards using a flax wood part as a base material.
【００３７】実施例２ リグノセルロース物質として、亜麻木質部を乾燥重量と
して３４０ｇ使用し、亜麻木質部の含水率を２２％と
し、イネ科植物リグニンを１７ｇ使用する以外は、実施
例１と同じ方法でパーティクルボードを製造した。この
ボードの比重は０．７５ｇ／ｃｍ３、曲げ強さは２２．
４Ｎ／ｃｍ２、吸水厚さ膨張率は９％であった。Example 2 Particles were obtained in the same manner as in Example 1 except that 340 g of flax wood was used as a lignocellulosic substance as a dry weight, the moisture content of flax wood was 22%, and 17 g of lignin of the grass family was used. The board was manufactured. The specific gravity of this board is 0.75 g / cm 3 , and the bending strength is 22.
4N / cm 2 , and the coefficient of expansion of the water absorption thickness was 9%.
【００３８】実施例３ 亜麻の木質部のうち、ボードの表層側に位置する乾燥重
量で５０重量％のものの含水率を３０％に、ボードの内
層側に位置する乾燥重量で５０重量％のものの含水率を
６％にする以外は、実施例２と同じ方法でパーティクル
ボードを製造した。このボードの比重は０．７４ｇ／ｃ
ｍ３、曲げ強さは２５．８Ｎ／ｃｍ２、吸水厚さ膨張率
は７％であった。Example 3 Among the woody parts of flax, the moisture content of 50% by weight of the dry weight located on the surface side of the board was set to 30%, and the moisture content of the 50% by weight of the dry weight located on the inner layer side of the board was found. A particle board was manufactured in the same manner as in Example 2 except that the rate was 6%. The specific gravity of this board is 0.74g / c
m 3 , flexural strength was 25.8 N / cm 2 , and water absorption thickness expansion coefficient was 7%.
【００３９】比較例３ イネ科植物リグニンの代わりに、木材リグニンを使用す
る以外は、実施例２と同じ方法でパーティクルボードを
製造した。このボードの比重は０．７５ｇ／ｃｍ３、曲
げ強さは１４．９Ｎ／ｃｍ２、吸水厚さ膨張率は１９％
であった。Comparative Example 3 A particle board was produced in the same manner as in Example 2 except that wood lignin was used instead of grass lignin. This board has a specific gravity of 0.75 g / cm 3 , a flexural strength of 14.9 N / cm 2 , and a water absorption thickness expansion coefficient of 19%.
Met.
【００４０】比較例４ 亜麻木質部の含水率を６％とし、イネ科植物リグニンの
代わりに濃度６０重量％の尿素樹脂接着剤を２８．３ｇ
（固形分１７．０ｇ）と硬化剤として濃度１０重量％の
塩化アンモニウムを２．８ｇを使用し、プレス温度を２
００℃、プレス時間を５分とする以外は、実施例２と同
じ方法でパーティクルボードを製造した。このボードの
比重は０．７４ｇ／ｃｍ３、曲げ強さは１５．２Ｎ／ｃ
ｍ２、吸水厚さ膨張率は３９％であった。COMPARATIVE EXAMPLE 4 The flax wood part was made to have a water content of 6%, and 28.3 g of a urea resin adhesive having a concentration of 60% by weight was used instead of lignin of the grass family.
(Solid content: 17.0 g), 2.8 g of ammonium chloride having a concentration of 10% by weight as a curing agent, and a pressing temperature of 2
A particle board was manufactured in the same manner as in Example 2 except that the pressing time was set to 00 ° C. and the pressing time was set to 5 minutes. The specific gravity of this board is 0.74 g / cm 3 and the bending strength is 15.2 N / c.
m 2 , the coefficient of expansion of the water absorption thickness was 39%.
【００４１】比較例５ 比較例５は、従来の標準的なパーティクルボードに関す
る。含水率５％、乾燥重量３４０ｇの針葉樹の小片に、
濃度４０重量％のフェノール樹脂接着剤８５ｇ（固形分
３４ｇ）を噴霧し混合した。かかる試料を、２２０ｍｍ
角のフォーミングボックスに手撤きしてマットフォーミ
ングした後、、５０ｃｍ角の成形可能な電熱ヒーター付
油圧プレスを使用し、１０ｍｍサイズのスペーサーを用
い、温度２００℃、圧力５０ｋｇｆ／ｃｍ２で、１５分
間熱圧することによってボードを製造した。このボード
の比重は０．７８ｇ／ｃｍ３、曲げ強さは２１．４Ｎ／
ｃｍ２、吸水厚さ膨張率は１３％であった。Comparative Example 5 Comparative Example 5 relates to a conventional standard particle board. On a piece of softwood with a moisture content of 5% and a dry weight of 340 g,
85 g (solid content: 34 g) of a phenol resin adhesive having a concentration of 40% by weight was sprayed and mixed. Such a sample, 220 mm
After the mat was formed by removing it from the corner forming box, a 50 cm square hydraulic press with an electric heater was used, and a 10 mm size spacer was used at a temperature of 200 ° C. and a pressure of 50 kgf / cm 2 at a pressure of 15 kg. The board was manufactured by hot pressing for minutes. The specific gravity of this board is 0.78 g / cm 3 , and the bending strength is 21.4 N /
cm 2 , and the coefficient of expansion of the water absorption thickness was 13%.
【００４２】[0042]
【発明の効果】本発明によれば、次のような効果があ
る。 （１）本発明のボードは、合成樹脂接着剤を使用してお
らず、有害物質を発生しない。 （２）また、人体に安全である。 （３）また、自然界で容易に分解できる。 （４）本発明のボードは、優れた力学的強度を持つ。 （５）本発明のボードは、優れた耐水性を持つ。 （１）本発明のボードで、基材としてケナフを使用して
いるものは、軽量で、かつ強度性能と耐水性に優れる。According to the present invention, the following effects can be obtained. (1) The board of the present invention does not use a synthetic resin adhesive and does not generate harmful substances. (2) It is safe for the human body. (3) It can be easily decomposed in nature. (4) The board of the present invention has excellent mechanical strength. (5) The board of the present invention has excellent water resistance. (1) The board of the present invention using kenaf as a base material is lightweight and has excellent strength performance and water resistance.
Claims (12)
板したボードであって、接着剤が添加されておらず、か
つ該リグノセルロース物質の乾燥重量に対してイネ科植
物リグニンが０．２〜３０重量％添加されていることを
特徴とするボード。1. A board formed by heating and pressurizing a lignocellulosic substance, wherein no adhesive is added, and the lignin of the grass family is 0.2 to 0.2% by dry weight of the lignocellulose substance. A board characterized in that 30% by weight is added.
から抽出されたものである請求項１のボード。2. The board according to claim 1, wherein the lignin of the grass family is extracted from pulp waste liquid.
植物の木質部である請求項１または２のボード。3. The board according to claim 1, wherein the lignocellulosic material is a woody part of a bast fiber plant.
ある請求項１〜３いずれか１項のボード。4. The board according to claim 1, wherein the lignocellulosic material is kenaf.
る請求項１〜３いずれか１項のボード。5. The board according to claim 1, wherein said lignocellulosic material is flax.
ロース物質の乾燥重量に対して０．２〜３０重量％のイ
ネ科植物リグニンを添加混合し、１８０〜２５０℃の温
度で加熱加圧して成板することを特徴とするボードの製
造方法。6. A lignocellulosic material is mixed with 0.2 to 30% by weight, based on the dry weight of the lignocellulosic material, of lignin of the grass family, and heated and pressed at a temperature of 180 to 250 ° C. to form a plate. A method of manufacturing a board.
含水率を１０〜４０％にする請求項６の方法。7. The method according to claim 6, wherein the moisture content of the lignocellulose material at the time of forming is 10 to 40%.
の表層側に位置する乾燥重量で５０重量％のものの含水
率を１５〜６０％にする請求項６または７の方法。8. The method according to claim 6, wherein the moisture content of the lignocellulosic material having a dry weight of 50% by weight located on the surface layer side of the board is adjusted to 15 to 60%.
から抽出されたものである請求項６〜８いずれか１項の
方法。9. The method according to any one of claims 6 to 8, wherein the lignin of the grass family is extracted from pulp waste liquid.
維植物の木質部である請求項６〜９いずれか１項の方
法。10. The method according to claim 6, wherein the lignocellulosic substance is a woody part of a bast fiber plant.
である請求項６〜１０いずれか１項の方法。11. The method according to claim 6, wherein the lignocellulosic material is kenaf.
ある請求項６〜１０いずれか１項の方法。12. The method according to claim 6, wherein said lignocellulosic material is flax.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14837897A JPH10305409A (en) | 1997-04-30 | 1997-04-30 | Board made of grass lignin and manufacture thereof |
| PCT/JP1998/001938 WO1998048990A1 (en) | 1997-04-30 | 1998-04-28 | Boards produced with the use of grass plant lignin and process for producing the same |
| CN98804638A CN1094090C (en) | 1997-04-30 | 1998-04-28 | Board produced with use of grass plant lignin and process for producing the same |
| AU70821/98A AU7082198A (en) | 1997-04-30 | 1998-04-28 | Boards produced with the use of grass plant lignin and process for producing thesame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14837897A JPH10305409A (en) | 1997-04-30 | 1997-04-30 | Board made of grass lignin and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10305409A true JPH10305409A (en) | 1998-11-17 |
Family
ID=15451432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14837897A Pending JPH10305409A (en) | 1997-04-30 | 1997-04-30 | Board made of grass lignin and manufacture thereof |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH10305409A (en) |
| CN (1) | CN1094090C (en) |
| AU (1) | AU7082198A (en) |
| WO (1) | WO1998048990A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3361819B2 (en) * | 1997-05-05 | 2003-01-07 | 剛 河野 | Adhesive and board using it |
| JP2009298132A (en) * | 2008-06-12 | 2009-12-24 | Kono Shinsozai Kaihatsu Kk | Improved lumber and method of manufacturing the same |
| JP2011144340A (en) * | 2010-01-14 | 2011-07-28 | Kono Shinsozai Kaihatsu Kk | Epoxy resin |
| JP2011167871A (en) * | 2010-02-17 | 2011-09-01 | Fujita Corp | Method of manufacturing wood-based fine fiber material and method of forming woody formed article using this material |
| WO2016056200A1 (en) * | 2014-10-07 | 2016-04-14 | パナソニックＩｐマネジメント株式会社 | Fiberboard and method for producing same |
| JP6299006B1 (en) * | 2016-10-21 | 2018-03-28 | トヨタ紡織株式会社 | Cut material, method for manufacturing wood material, and method for manufacturing wood board |
| JP6299007B1 (en) * | 2016-10-21 | 2018-03-28 | トヨタ紡織株式会社 | Wood board, method for manufacturing the same, and mat-like material |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293706A (en) * | 2000-04-14 | 2001-10-23 | Matsushita Electric Works Ltd | Particle board |
| JP2011219715A (en) * | 2010-02-10 | 2011-11-04 | Hitachi Chem Co Ltd | Resin compound material for molding |
| JP5014463B2 (en) * | 2010-04-19 | 2012-08-29 | 河野新素材開発株式会社 | Board manufacturing method |
| CN103406967B (en) * | 2013-07-30 | 2015-07-29 | 有机木材集团有限公司 | Based on the method preparing Formaldehyde Free Wood-based Panel of lignin glue |
| RS61226B1 (en) * | 2015-12-23 | 2021-01-29 | Goodhout Holding B V | Method for the production of artificial wood board |
| ES2705437B2 (en) * | 2018-11-28 | 2019-09-23 | Univ Madrid Politecnica | MANUFACTURING PROCESS OF BOARDS FROM MACROPHITE PLANTS WITH AERENQUIMA FABRIC AND TABLETS OBTAINED FROM SUCH PROCESS |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4416221Y1 (en) * | 1966-06-09 | 1969-07-12 | ||
| CN1094091C (en) * | 1994-12-22 | 2002-11-13 | 河野刚 | Board produced from malvaceous bast plant and process for producing the same |
-
1997
- 1997-04-30 JP JP14837897A patent/JPH10305409A/en active Pending
-
1998
- 1998-04-28 WO PCT/JP1998/001938 patent/WO1998048990A1/en active Application Filing
- 1998-04-28 CN CN98804638A patent/CN1094090C/en not_active Expired - Fee Related
- 1998-04-28 AU AU70821/98A patent/AU7082198A/en not_active Abandoned
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3361819B2 (en) * | 1997-05-05 | 2003-01-07 | 剛 河野 | Adhesive and board using it |
| JP2009298132A (en) * | 2008-06-12 | 2009-12-24 | Kono Shinsozai Kaihatsu Kk | Improved lumber and method of manufacturing the same |
| JP2011144340A (en) * | 2010-01-14 | 2011-07-28 | Kono Shinsozai Kaihatsu Kk | Epoxy resin |
| JP2011167871A (en) * | 2010-02-17 | 2011-09-01 | Fujita Corp | Method of manufacturing wood-based fine fiber material and method of forming woody formed article using this material |
| WO2016056200A1 (en) * | 2014-10-07 | 2016-04-14 | パナソニックＩｐマネジメント株式会社 | Fiberboard and method for producing same |
| JP6299006B1 (en) * | 2016-10-21 | 2018-03-28 | トヨタ紡織株式会社 | Cut material, method for manufacturing wood material, and method for manufacturing wood board |
| JP6299007B1 (en) * | 2016-10-21 | 2018-03-28 | トヨタ紡織株式会社 | Wood board, method for manufacturing the same, and mat-like material |
| WO2018074492A1 (en) * | 2016-10-21 | 2018-04-26 | トヨタ紡織株式会社 | Cut article, method for manufacturing wooden material, and method for manufacturing wooden board |
| WO2018074491A1 (en) * | 2016-10-21 | 2018-04-26 | トヨタ紡織株式会社 | Engineered wood, method for manufacturing same, and mat-shaped material |
| JP2018069742A (en) * | 2016-10-21 | 2018-05-10 | トヨタ紡織株式会社 | Woody board, method for manufacturing the same, and mat-shaped material |
| JP2018069722A (en) * | 2016-10-21 | 2018-05-10 | トヨタ紡織株式会社 | Woody board, method for manufacturing the same, and mat-shaped material |
| JP2018069721A (en) * | 2016-10-21 | 2018-05-10 | トヨタ紡織株式会社 | Cut article, manufacturing method of woody material and manufacturing method of woody board |
| JP2018069741A (en) * | 2016-10-21 | 2018-05-10 | トヨタ紡織株式会社 | Woody board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1094090C (en) | 2002-11-13 |
| AU7082198A (en) | 1998-11-24 |
| CN1254306A (en) | 2000-05-24 |
| WO1998048990A1 (en) | 1998-11-05 |
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