JPH0647713A - Forming method of lignocellulose or of material containing lignocellulose - Google Patents
Forming method of lignocellulose or of material containing lignocelluloseInfo
- Publication number
- JPH0647713A JPH0647713A JP18593992A JP18593992A JPH0647713A JP H0647713 A JPH0647713 A JP H0647713A JP 18593992 A JP18593992 A JP 18593992A JP 18593992 A JP18593992 A JP 18593992A JP H0647713 A JPH0647713 A JP H0647713A
- Authority
- JP
- Japan
- Prior art keywords
- lignocellulose
- acid
- material containing
- water
- aqueous solution
- 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
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、リグノセルロースまた
はこれを含む材料の成形方法に関し、さらに詳しくは、
木材チップ等のリグノセルロースまたはこれを含む材料
を、酸と有機化合物含有水溶液の存在下に、加熱圧縮す
るリグノセルロースまたはこれを含む材料の成形方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding lignocellulose or a material containing the same, more specifically,
The present invention relates to a method for molding lignocellulose or a material containing the same by heating and compressing lignocellulose such as wood chips or a material containing the same in the presence of an acid and an aqueous solution containing an organic compound.
【０００２】[0002]
【従来の技術】従来より、木材等のリグノセルロースま
たはこれを含む材料の成形は、先ず該材料を、粒状、粉
状、繊維状、ストランド状、チップ状、フレーク状、単
板状等の形状にした後、これを、尿素樹脂、メラミン樹
脂、フェノール樹脂、ポリ酢酸ビニル系樹脂、ポリアク
リル酸エステル系樹脂等の樹脂系接着剤を多量に用い
て、加熱・加圧することにより行われてきた。2. Description of the Related Art Conventionally, for forming lignocellulose such as wood or a material containing the same, the material is first formed into a granular, powdery, fibrous, strand-like, chip-like, flake-like, single-plate-like shape or the like. After that, a large amount of resin adhesive such as urea resin, melamine resin, phenol resin, polyvinyl acetate resin, polyacrylic ester resin, etc. was used to heat and pressurize this. .
【０００３】更に別法として、リグノセルロースまたは
これを含む材料を、スチームにより１８０℃以上の高温
・高圧処理して繊維状にし、これを接着剤を用いて、フ
ァイバーボード等のボードに成形する方法も実施されて
いる。As another method, a method is used in which lignocellulose or a material containing the same is treated with steam at a high temperature of 180 ° C. or higher to form a fibrous form, which is then molded into a board such as a fiber board using an adhesive. Has also been implemented.
【０００４】[0004]
【発明が解決しようとする課題】従来の接着剤を用いる
方法は、工業的な操作中に増粘して遂にはゲル化した
り、或いは皮膜化して各種のトラブルを生じ、更には関
連装置を汚してメンテナンスが繁雑になる等の難点があ
る。The conventional method using an adhesive is to increase the viscosity during industrial operation and finally gel, or to form a film to cause various troubles, and to contaminate related equipment. And maintenance becomes complicated.
【０００５】またリグノセルロースまたはこれを含む材
料を、スチームを用いて高温・高圧処理すれば、該リグ
ノセルロースが損傷を受けて暗褐色に変色し、成形品の
外観が原料の外観と著しく異なったものになる欠点を有
している。Further, when lignocellulose or a material containing the same is treated at high temperature and high pressure with steam, the lignocellulose is damaged and discolors to dark brown, and the appearance of the molded article is remarkably different from that of the raw material. It has a drawback.
【０００６】[0006]
【発明の目的】本発明は、上記した従来技術のもつ欠点
を克服して、接着剤を使用することなく、リグノセルロ
ースまたはこれを含む材料を、比較的低温で加熱圧縮す
ることにより、機械的特性、外観が優れた成形品を与え
る方法を提供することを目的とする。OBJECTS OF THE INVENTION The present invention overcomes the above-mentioned drawbacks of the prior art by mechanically compressing lignocellulose or a material containing it at relatively low temperature without the use of adhesives. It is an object of the present invention to provide a method for giving a molded product having excellent characteristics and appearance.
【０００７】[0007]
【課題を解決するための手段】前記課題を克服し、所期
の目的を好適に達成するため本発明は、リグノセルロー
スまたはこれを含む材料を、酸および、リグノセルロー
スに対し水より大なる膨潤力を有する有機化合物の水溶
液の存在下に、加熱圧縮することを特徴とする。In order to overcome the above-mentioned problems and to suitably achieve the intended purpose, the present invention provides a method in which lignocellulose or a material containing the same is swollen with acid and lignocellulose more than water. It is characterized by being heated and compressed in the presence of an aqueous solution of an organic compound having strength.
【０００８】本発明におけるリグノセルロースまたはこ
れを含む材料とは、リグニンを随伴して産出するセルロ
ース質材料、ないしは、リグニン、セルロース、ヘミセ
ルロースを含有する材料を指称し、代表的なものとして
木質材料、とうもろこしのバカス、イネわら、麦わら等
が挙げられる。また形状は、粒状、粉状、繊維状、スト
ランド状、チップ状、フレーク状、ゼファー状等、後に
述べる酸や溶剤との接触が容易な形態が好ましい。The lignocellulose or the material containing the same in the present invention refers to a cellulosic material produced together with lignin, or a material containing lignin, cellulose, and hemicellulose, and a wood material as a typical one. Examples include corn bacas, rice straw, and straw. The shape is preferably granular, powdery, fibrous, strand-like, chip-like, flake-like, zephyr-like, or the like, which is easy to contact with an acid or a solvent described later.
【０００９】本発明は、従来の成形方法において使用さ
れていた接着剤を用いない点に最大の特徴が存する。す
なわち、本発明方法では、接着剤の代りとなる、材料中
に存在する親油性成分であるリグニンの接着効果を引き
出すために、酸と、有機化合物の水溶液を好適に組合せ
て用い、比較的低い温度で加熱・加圧成形する。用いら
れる酸は、無機酸および有機酸の何れであってもよく、
例えば硫酸、塩酸、リン酸等の無機酸、クエン酸、パラ
トルエンスルホン酸等の有機酸が挙げられるが、塩化ア
ンモニウムのように水に溶けて酸性を示すものであって
もよい。後に述べるように、リグノセルロースまたはこ
れを含む材料に吸着される、例えばベンゼンスルホン
酸、パラトルエンスルホン酸、フェノールスルホン酸等
を用いる方が効果的である。またカルボキシル基やスル
ホン酸等を含有する水溶性または水分散性の高分子化合
物、例えばポリビニルスルホン酸、ポリアクリル酸、ポ
リメタアクリル酸、スチレン−無水マレイン酸共重合
物、イソブチレン−無水マレイン酸共重合物等も好適に
使用し得る。The greatest feature of the present invention resides in that the adhesive used in the conventional molding method is not used. That is, in the method of the present invention, in order to bring out the adhesive effect of lignin, which is a lipophilic component present in the material, in place of the adhesive, an acid and an aqueous solution of an organic compound are preferably used in combination, and are relatively low. Heat and pressure molding at temperature. The acid used may be either an inorganic acid or an organic acid,
Examples thereof include inorganic acids such as sulfuric acid, hydrochloric acid and phosphoric acid, and organic acids such as citric acid and paratoluene sulfonic acid, but may be ones which show acidity when dissolved in water such as ammonium chloride. As will be described later, it is more effective to use, for example, benzene sulfonic acid, paratoluene sulfonic acid, phenol sulfonic acid, etc. which are adsorbed on lignocellulose or a material containing the same. Further, a water-soluble or water-dispersible polymer compound containing a carboxyl group or sulfonic acid, such as polyvinyl sulfonic acid, polyacrylic acid, polymethacrylic acid, styrene-maleic anhydride copolymer, isobutylene-maleic anhydride copolymer Polymers and the like can also be suitably used.
【００１０】酸を多く用いると成形時間の短縮化を図る
ことができ、また成形物の機械的強度、耐水性を向上さ
せることができるが、その反面として成形物の強度低
下、変色、汚染等の原因となるため、使用量は一定量以
下であることが好ましい。通常用いられる酸の量は、リ
グノセルロースまたはこれを含む材料に対し０.５〜５.
５重量％、好ましくは、１.０〜５.５重量％である。When a large amount of acid is used, the molding time can be shortened, and the mechanical strength and water resistance of the molded product can be improved, but on the other hand, the strength of the molded product is reduced, discoloration, contamination, etc. Therefore, it is preferable that the amount used is less than a certain amount. The amount of acid normally used is 0.5-5. With respect to lignocellulose or a material containing it.
It is 5% by weight, preferably 1.0 to 5.5% by weight.
【００１１】次に、有機化合物の水溶液につき説明する
と、この発明に用いる有機化合物の水溶液は、水より膨
潤力が大でなければならない。有機化合物としては、ア
セトン、ジオキサン、メチルセロソルブ、ｎ−プロピル
アルコール、ジメチルスルホキシド等が挙げられるが、
取り扱い上、８０℃以上の沸点を有するものが好まし
い。Next, the aqueous solution of the organic compound will be described. The aqueous solution of the organic compound used in the present invention must have a swelling power larger than that of water. Examples of the organic compound include acetone, dioxane, methyl cellosolve, n-propyl alcohol, and dimethyl sulfoxide.
In terms of handling, those having a boiling point of 80 ° C. or higher are preferable.
【００１２】上記した有機化合物のうち、ジメチルスル
ホキシド、ジオキサンおよびメチルセロソルブについて
の各濃度の水溶液中で、室温(２０℃)における水を１０
０(％)としたときの、木材の相対容積膨潤値(％)を図１
に示す。この図から、各化合物水溶液の各濃度における
相対膨潤力が求められるが、本発明において「水より大
なる膨潤力」とは、この相対膨潤力が１００より大であ
ることを意味する。しかしながら、同一有機化合物の同
一濃度の水溶液でも、膨潤度は処理すべき材料、特に樹
種によって変わることから、使用すべき有機化合物の水
溶液は、使用する樹種について相対膨潤率１００以上と
なるものを選択する必要がある。成形時の取り扱い易
さ、特に、圧力や安全性の点から、有機化合物の濃度
は、３０重量％以下とすることが好ましい。Of the above-mentioned organic compounds, dimethyl sulfoxide, dioxane, and methyl cellosolve were mixed with water at room temperature (20 ° C.) at a concentration of 10%.
Fig. 1 shows the relative volume swelling value (%) of wood when 0 (%) is set.
Shown in. From this figure, the relative swelling power at each concentration of each compound aqueous solution can be obtained, and in the present invention, "swelling power greater than water" means that this relative swelling power is greater than 100. However, even if an aqueous solution of the same organic compound has the same concentration, the degree of swelling varies depending on the material to be treated, especially the tree species. Therefore, the aqueous solution of the organic compound to be used should be one having a relative swelling rate of 100 or more for the tree species used. There is a need to. The concentration of the organic compound is preferably 30% by weight or less from the viewpoint of ease of handling during molding, particularly pressure and safety.
【００１３】酸を含有する有機化合物水溶液の存在下で
リグノセルロースまたはこれを含む材料を成形するに
は、この水溶液をスプレー法又は浸漬法等によってリグ
ノセルロースの繊維飽和点以上の量の該水溶液を含有さ
せて、１００〜１６０℃、好ましくは、１２０〜１４０
℃に加温し、加圧下で成形することが好ましい。ここで
繊維飽和点とは、細胞壁が結合水で飽和されて完全に膨
潤し、かつ自由水のない状態のことであり、樹種によっ
て若干の違いはあるが、平均すると２８〜３０％であ
る。該水溶液をリグノセルロースまたはこれを含む材料
に対し過度に含有せしめると、成形時間が著しく長くな
るので、一般には、リグノセルロースまたはこれを含む
材料に対し、５０〜８０重量％の含有量が好ましい。ま
た、該水溶液中の酸の濃度は、３重量％以下とすること
が好ましい。例えば、パラトルエンスルホン酸の場合、
０.７重量％の添加で充分であるが、塩化アンモニウム
の場合には１.５〜３.０重量％添加する。In order to mold lignocellulose or a material containing it in the presence of an aqueous solution of an organic compound containing an acid, this aqueous solution is sprayed or dipped to form an aqueous solution of an amount not less than the fiber saturation point of lignocellulose. 100 to 160 ° C., preferably 120 to 140
It is preferable to heat to 0 ° C. and mold under pressure. Here, the fiber saturation point is a state in which the cell wall is saturated with bound water and completely swelled, and there is no free water, and there is a slight difference depending on the tree species, but it is 28 to 30% on average. If the aqueous solution is excessively contained in lignocellulose or a material containing the same, the molding time becomes remarkably long. Therefore, a content of 50 to 80% by weight is generally preferable with respect to lignocellulose or a material containing the same. Further, the concentration of the acid in the aqueous solution is preferably 3% by weight or less. For example, in the case of paratoluene sulfonic acid,
The addition of 0.7% by weight is sufficient, but in the case of ammonium chloride, it is added in the range of 1.5 to 3.0% by weight.
【００１４】成形時の圧締圧力は、目的とする製品の比
重によって異なるが、通常５〜５０kg/cm2、好ましくは
１０〜２０kg/cm2である。The pressing pressure at the time of molding varies depending on the specific gravity of the intended product, but is usually 5 to 50 kg / cm 2 , preferably 10 to 20 kg / cm 2 .
【００１５】本発明におけるリグノセルロースまたはこ
れを含む材料の処理において、必要であれば、従来の接
着剤を併用することは可能である。このときは、該接着
剤の使用量を充分に低減させることができるので好適で
ある。In the treatment of the lignocellulose or the material containing the same according to the present invention, a conventional adhesive can be used in combination, if necessary. In this case, the amount of the adhesive used can be sufficiently reduced, which is preferable.
【００１６】以下、実施例および比較例を挙げて、本発
明を更に詳しく説明するが、本発明はこれらの実施例に
限定されるものではない。 実施例１ 杉板を繊維に沿って縦に割裂し、更にこれを圧延して、
のしイカに似た網状のシート(いわゆる「ゼファーシー
ト」)にし、このゼファーシート０.７kgを１重量％のパ
ラトルエンスルホン酸を含有するメチルセロソルブ２０
重量％水溶液１.３リットルに１０分間浸漬して引き上
げ、処理前のゼファーシートに対し８０重量％の液を含
有した湿潤ゼファーシートを得た。これらのゼファーシ
ートを重ねてマットとし、このマットを１２０℃の温
度、２０kg/cm2の圧力下、９０分間加熱圧縮してボード
を作製した。得られたボードの比重、強度および水膨潤
性を測定し、その結果を下記表１に示す。Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples. Example 1 A cedar board was vertically split along the fibers, and this was further rolled,
A net-like sheet resembling Noshi squid (so-called "Zeffer sheet") is prepared, and 0.7 kg of this Zephyr sheet is added to methyl cellosolve 20 containing 1% by weight of paratoluenesulfonic acid.
The wet zephyr sheet containing 80% by weight of the solution was dipped in 1.3 liters of a wt% aqueous solution for 10 minutes and pulled up. These zephyr sheets were stacked to form a mat, and the mat was heated and compressed at a temperature of 120 ° C. and a pressure of 20 kg / cm 2 for 90 minutes to prepare a board. The specific gravity, strength and water swelling property of the obtained board were measured, and the results are shown in Table 1 below.
【００１７】比較例１ １重量％のパラトルエンスルホン酸を含有するメチルセ
ロソルブ２０重量％水溶液の代りに水を用いた以外は、
実施例１と同様にしてボードを得た。かくして得られた
ボードの比重、強度および水膨潤性を測定し、その結果
を下記表１に示す。Comparative Example 1 Except that water was used instead of a 20% by weight aqueous solution of methyl cellosolve containing 1% by weight of paratoluenesulfonic acid.
A board was obtained in the same manner as in Example 1. The specific gravity, strength and water swelling property of the board thus obtained were measured, and the results are shown in Table 1 below.
【００１８】比較例２ １重量％のパラトルエンスルホン酸を含有するメチルセ
ロソルブ２０重量％水溶液の代りに、メチルセロソルブ
２０重量％水溶液を用いた以外は、実施例１と同様にし
てボードを得た。かくして得られたボードの比重、強度
および水膨潤性を測定し、その結果を下記表１に示す。Comparative Example 2 A board was obtained in the same manner as in Example 1 except that a 20% by weight aqueous solution of methyl cellosolve was used instead of the 20% by weight aqueous solution of methyl cellosolve containing 1% by weight of paratoluenesulfonic acid. . The specific gravity, strength and water swelling property of the board thus obtained were measured, and the results are shown in Table 1 below.
【００１９】[0019]
【表１】 [Table 1]
【００２０】表１のデータから明らかなとおり、本発明
の方法で得られたボードの機械的強度および水膨潤率
は、浸漬液としてただの水又はメチルセロソルブ２０重
量％水溶液を用いた比較例１又は２の方法によって得ら
れたボードのそれらに比べて非常に優れていることが判
る。As is apparent from the data in Table 1, the mechanical strength and water swelling rate of the board obtained by the method of the present invention are the same as those in Comparative Example 1 in which pure water or a 20% by weight aqueous solution of methyl cellosolve was used as the immersion liquid. Or it is found to be very superior to those of the boards obtained by method 2.
【００２１】実施例２ ストランド状の桧０.７kgに、０.７重量％のパラトルエ
ンスルホン酸を含有するジメチルスルホキシド３０重量
％水溶液を０.３５kg(桧に対して５０％)スプレー塗布
した後に、マットにした。得られたマットを１５０℃の
温度、２０kg/cm2の圧力下で９０分間加熱圧縮しボード
を得た。得られたボードの性質は次のとおりである。 比重：０.７５、曲げ強度：６７７kg/cm2、 曲げ弾性率：１５１×１０3 kg/cm2、水膨潤率：６７重
量％。EXAMPLE 2 0.3 kg of a 30% by weight aqueous solution of dimethyl sulfoxide containing 0.7% by weight of paratoluenesulfonic acid was spray-applied to 0.7 kg of a strand-shaped cypress after spray-coating. , Made mat. The obtained mat was heated and compressed at a temperature of 150 ° C. and a pressure of 20 kg / cm 2 for 90 minutes to obtain a board. The properties of the obtained board are as follows. Specific gravity: 0.75, bending strength: 677 kg / cm 2 , bending elastic modulus: 151 × 10 3 kg / cm 2 , water swelling ratio: 67% by weight.
【００２２】実施例３ ストランド状の桧０.７kgを、パラトルエンスルホン酸
０.７重量％を含有するメチルセロソルブ１０％水溶液
に浸漬し、該水溶液の桧の重量に対し７０重量％含有せ
しめた後、マットにした。得られたマットを、１２０℃
の温度、１０kg/cm2の圧力下、９０分間加熱圧縮し、比
重０.７のボードを作製した。このボードの機械的強度
は、曲げ強度４３４kg/cm2、曲げ弾性率１４４×１０3
kg/cm2であり、水膨潤率は６０重量％であった。Example 3 0.7 kg of a strand-shaped cypress was dipped in a 10% aqueous solution of methyl cellosolve containing 0.7% by weight of paratoluenesulfonic acid so that 70% by weight of the cypress of the aqueous solution was contained. After that, I made a mat. The obtained mat is heated to 120 ° C.
At a temperature of 10 kg / cm 2 and heated and compressed for 90 minutes to prepare a board having a specific gravity of 0.7. The mechanical strength of this board is flexural strength 434 kg / cm 2 , flexural modulus 144 × 10 3.
It was kg / cm 2 and the water swelling ratio was 60% by weight.
【００２３】実施例４ ストランド状の桧０.７kgを、２重量％のイソブチレン
−無水マレイン酸共重合物((株)クラレの登録商標「イソ
バン-１０４」)を含有するジオキサン２０％水溶液に浸
漬し、該水溶液の桧の重量に対し７５重量％含有せしめ
た後、マットにした。得られたマットを、１２０℃の温
度、１０kg/cm2の圧力下、９０分間加熱圧縮し、比重
０.８のボードを作製した。このボードの機械的強度
は、曲げ強度４４０kg/cm2、曲げ弾性率１７１×１０3
kg/cm2であり、水膨潤率は６４重量％であった。Example 4 0.7 kg of a strand-shaped cypress was immersed in a 20% aqueous dioxane solution containing 2% by weight of an isobutylene-maleic anhydride copolymer (registered trademark of Kuraray Co., Ltd., "Isoban-104"). Then, 75% by weight of the aqueous solution was added to the weight of the cypress, and a mat was formed. The obtained mat was heated and compressed at a temperature of 120 ° C. and a pressure of 10 kg / cm 2 for 90 minutes to prepare a board having a specific gravity of 0.8. The mechanical strength of this board is 440 kg / cm 2 in bending strength and 171 × 10 3 in bending elastic modulus.
It was kg / cm 2 , and the water swelling ratio was 64% by weight.
【図１】桧材の、有機化合物濃度(水溶液中の重量％)と
相対容積膨潤値(％)の関係を示すグラフである。FIG. 1 is a graph showing the relationship between the concentration of an organic compound (% by weight in an aqueous solution) and the relative volume swelling value (%) of a cypress.
Claims (5)
を、酸および、リグノセルロースに対し水より大なる膨
潤力を有する有機化合物の水溶液の存在下で、加熱圧縮
することを特徴とするリグノセルロースまたはこれを含
む材料の成形方法。1. A lignocellulosic material or a product thereof, which comprises heating and compressing lignocellulose or a material containing the same in the presence of an acid and an aqueous solution of an organic compound having a swelling power larger than that of water. A method of molding a material containing:
を、酸を含有する、リグノセルロースに対し水より大な
る膨潤力を有する有機化合物の水溶液で処理した後に、
加熱圧縮する請求項１記載の方法。2. After treating lignocellulose or a material containing the same with an aqueous solution of an organic compound containing an acid and having a swelling power greater than that of water to lignocellulose,
The method according to claim 1, wherein the method is heat compression.
ースまたはこれを含む材料の繊維飽和点以上である請求
項１記載の方法。3. The method according to claim 1, wherein the amount of the aqueous solution of the organic compound is not less than the fiber saturation point of lignocellulose or a material containing the same.
項１記載の方法。4. The method according to claim 1, wherein the heat compression is performed at 100 to 160 ° C.
重量％以下である請求項２記載の方法。5. The content of the acid in the aqueous solution of the organic compound is 3
The method according to claim 2, which is not more than wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18593992A JPH0647713A (en) | 1992-06-19 | 1992-06-19 | Forming method of lignocellulose or of material containing lignocellulose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18593992A JPH0647713A (en) | 1992-06-19 | 1992-06-19 | Forming method of lignocellulose or of material containing lignocellulose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0647713A true JPH0647713A (en) | 1994-02-22 |
Family
ID=16179533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18593992A Pending JPH0647713A (en) | 1992-06-19 | 1992-06-19 | Forming method of lignocellulose or of material containing lignocellulose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0647713A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996019328A1 (en) * | 1994-12-22 | 1996-06-27 | Tsuyoshi Kono | Board produced from malvaceous bast plant and process for producing the same |
| JP2007261159A (en) * | 2006-03-29 | 2007-10-11 | Aichi Prefecture | Manufacturing process of molding made of woody material |
| JP2011144363A (en) * | 2009-12-14 | 2011-07-28 | Mitsubishi Chemicals Corp | Cellulose fiber composite and method for producing the same |
| WO2013190777A1 (en) * | 2012-06-19 | 2013-12-27 | パナソニック株式会社 | Bagasse molding |
| US10888927B2 (en) | 2013-11-25 | 2021-01-12 | Raytheon Technologies Corporation | Method of manufacturing a hybrid cylindrical structure |
| WO2021161660A1 (en) * | 2020-02-13 | 2021-08-19 | 株式会社神戸製鋼所 | Method for producing biomass fuel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016395A (en) * | 1973-06-15 | 1975-02-20 | ||
| JPS60206604A (en) * | 1984-03-30 | 1985-10-18 | Ota Shoji | Conversion of lignocellulose material into recomposed compound |
-
1992
- 1992-06-19 JP JP18593992A patent/JPH0647713A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5016395A (en) * | 1973-06-15 | 1975-02-20 | ||
| JPS60206604A (en) * | 1984-03-30 | 1985-10-18 | Ota Shoji | Conversion of lignocellulose material into recomposed compound |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996019328A1 (en) * | 1994-12-22 | 1996-06-27 | Tsuyoshi Kono | Board produced from malvaceous bast plant and process for producing the same |
| US5728269A (en) * | 1994-12-22 | 1998-03-17 | Atsushi Onishi | Board produced from malvaceous bast plant and process for producing the same |
| JP2007261159A (en) * | 2006-03-29 | 2007-10-11 | Aichi Prefecture | Manufacturing process of molding made of woody material |
| JP2011144363A (en) * | 2009-12-14 | 2011-07-28 | Mitsubishi Chemicals Corp | Cellulose fiber composite and method for producing the same |
| WO2013190777A1 (en) * | 2012-06-19 | 2013-12-27 | パナソニック株式会社 | Bagasse molding |
| CN104203515A (en) * | 2012-06-19 | 2014-12-10 | 松下电器产业株式会社 | Bagasse molding body |
| JPWO2013190777A1 (en) * | 2012-06-19 | 2016-02-08 | パナソニックＩｐマネジメント株式会社 | Bagasse molded body |
| US10888927B2 (en) | 2013-11-25 | 2021-01-12 | Raytheon Technologies Corporation | Method of manufacturing a hybrid cylindrical structure |
| WO2021161660A1 (en) * | 2020-02-13 | 2021-08-19 | 株式会社神戸製鋼所 | Method for producing biomass fuel |
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