JPH0361004A - Manufacture of dry type fiber plate - Google Patents
Manufacture of dry type fiber plateInfo
- Publication number
- JPH0361004A JPH0361004A JP19543689A JP19543689A JPH0361004A JP H0361004 A JPH0361004 A JP H0361004A JP 19543689 A JP19543689 A JP 19543689A JP 19543689 A JP19543689 A JP 19543689A JP H0361004 A JPH0361004 A JP H0361004A
- Authority
- JP
- Japan
- Prior art keywords
- wood fibers
- added
- monomer
- crosslinking reaction
- fiberboard
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000000835 fiber Substances 0.000 title abstract 4
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 56
- 239000002025 wood fiber Substances 0.000 claims abstract description 56
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 47
- 230000001070 adhesive effect Effects 0.000 claims abstract description 40
- 239000000853 adhesive Substances 0.000 claims abstract description 39
- 239000000178 monomer Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 20
- 239000003377 acid catalyst Substances 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 8
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004202 carbamide Substances 0.000 claims abstract description 6
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000011094 fiberboard Substances 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000004132 cross linking Methods 0.000 claims description 19
- 239000002023 wood Substances 0.000 claims description 12
- 238000010025 steaming Methods 0.000 claims description 9
- 238000007731 hot pressing Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims 2
- 230000001737 promoting effect Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000005822 methylenation reaction Methods 0.000 abstract description 3
- 206010061592 cardiac fibrillation Diseases 0.000 abstract description 2
- 230000002600 fibrillogenic effect Effects 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004640 Melamine resin Substances 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は乾式法による繊維板の製造方法に関すし、特に
接着剤のプレキュアを防止して木繊維の接着効果をフォ
ーミングされたボード中において発揮するよう工夫され
た乾式繊維板の製造方法に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for manufacturing fiberboard by a dry process, and in particular, it prevents precure of the adhesive and improves the adhesive effect of wood fibers in the formed board. The present invention relates to a method for manufacturing dry-processed fiberboard that is devised to achieve the desired performance.
〈従来技術〉
乾式法による繊維板の製造方法として従来より下記のよ
うな各種の方法が知られている。<Prior Art> As a method for producing fiberboard by a dry method, various methods such as those described below are conventionally known.
Ａ）まず木材チップを蒸煮装置（ダイジェスタ−）で蒸
煮して木材チップを十分に可塑化した後、解繊装置（す
７アイナー）に投入して解繊することによって木繊維を
得る。この際、尿素系及びメラミン系等の熱硬化性樹脂
接着剤を硬化剤と共に解繊装置内に投入し、これら接着
剤及び硬化剤を木繊維に混合付着させる。次いでこの木
繊維をダクトを通じて熱風乾燥して付着された接着剤を
硬化せしめ、その後フォーミングして一定のマット状に
堆積し、更に熱圧成形して繊維板を製造する。A) First, wood chips are sufficiently plasticized by steaming them in a digester, and then they are fed into a fibrillation device (S7 Einer) and defibrated to obtain wood fibers. At this time, thermosetting resin adhesives such as urea-based and melamine-based adhesives are put into the fibrillator together with a curing agent, and these adhesives and curing agents are mixed and adhered to the wood fibers. Next, the wood fibers are dried with hot air through a duct to harden the attached adhesive, and then formed and deposited in a certain mat shape, and then hot-press molded to produce fiberboard.
Ｂ）木材チップを蒸煮、解繊して木繊維を得た後、該木
繊維をダクトを通じて熱風乾燥する。次いで混合装置（
ブレンダー）にて該木繊維に接着剤及び硬化剤を噴霧添
加し、更に風送し、７オーミングして一定のマット状に
堆積し、更に熱圧成形して繊維板を製造する。B) After steaming and defibrating wood chips to obtain wood fibers, the wood fibers are dried with hot air through a duct. Then the mixing device (
An adhesive and a curing agent are added to the wood fibers by spraying using a blender, followed by air blowing, 7 ohms, and deposited into a certain mat shape, followed by hot-press molding to produce a fiberboard.
Ｃ）木材チップを蒸煮、解繊して木繊維を得た後、該木
繊維をダクトを通じて熱風乾燥する。その際、ダクト内
風送中において木繊維に接着剤を噴霧して、浮遊してい
る該木繊維に接着剤を付着せしめる。その後更に風送し
、７オーミングして一定のマット状に堆積し、更に熱圧
成形して繊維板を製造する。C) After steaming and defibrating wood chips to obtain wood fibers, the wood fibers are dried with hot air through a duct. At this time, the adhesive is sprayed onto the wood fibers while the air is being blown inside the duct, so that the adhesive adheres to the floating wood fibers. Thereafter, it is further blown with air, subjected to 7 ohms, deposited in a certain mat shape, and further hot-pressed to produce a fiberboard.
〈発明が解決しようとする課題〉
上記したような従来技術による乾式繊維板の製造方法は
、しかしながら、夫々以下のような欠点を有している。<Problems to be Solved by the Invention> The methods of manufacturing dry-laid fiberboard according to the prior art as described above, however, each have the following drawbacks.
Ａ）蒸煮後の木材チップが比較的高温状態のままｌＪ７
了イナーに投入され、しかも解繊時に生ずる摩擦熱が更
に加えられるため、投入された接着剤がリファイナー内
においてプレキュアし易い。従って得られる繊維板自体
の接着強度が低下し、またプレキュアした接着剤がり７
アイナーの目詰まりを起こして解繊効率を低下させる等
の欠点をもたらしていた。A) After steaming, the wood chips remain at a relatively high temperature lJ7
Since the adhesive is charged into the refiner and the frictional heat generated during defibration is further applied, the charged adhesive is easily pre-cured within the refiner. Therefore, the adhesive strength of the resulting fiberboard itself decreases, and the adhesive strength of the pre-cured adhesive decreases.
This has resulted in drawbacks such as clogging of the eyeliner and reduced defibration efficiency.
Ｂ）接着剤をブレンダー内に噴霧するものであるため、
ブレンダー内壁面に接着剤が付着し易く、また付着した
まま硬化することもある。ブレンダー内壁面に付着し或
は硬化した接着剤が垂れ落ちたり剥離したりすると木繊
雄株を作り、これが熱圧成形後の繊維板に一般にレジン
スポットと呼ばれる接着剤のしみとなって現出して不良
製品が製造されてしまう。B) Since the adhesive is sprayed into the blender,
Adhesive tends to adhere to the inner wall of the blender, and may harden while remaining adhered. When the adhesive that adheres to the inner wall of the blender or hardens drips or peels off, it creates wood fiber male stubble, which appears on the fiberboard after hot-press molding as adhesive stains, commonly called resin spots. This results in the manufacture of defective products.
Ｃ）ダクト内にて熱風乾燥されつつ風送される木繊維に
対して接着剤を噴霧するものであるため、接着剤がプレ
キュアし易く、ダクト内壁面に接着剤が付着硬化してし
まう。そのために繊維板自体の接着強度が低下し、また
硬化した接着剤が木繊維中に混入して繊維板の品質を低
下させる。C) Since the adhesive is sprayed onto the wood fibers that are being blown away while being dried with hot air in the duct, the adhesive tends to precure and hardens as it adheres to the inner wall surface of the duct. This reduces the adhesive strength of the fiberboard itself, and the hardened adhesive mixes into the wood fibers, reducing the quality of the fiberboard.
このように乾式法による繊維板の製造方法においては、
解繊時或はその後に添加される接着剤をプレキュアさせ
ることなく木繊維に十分に付着混合させることが要求さ
れるが、従来法はいずれもこの点で不十分であって各々
上述のような欠点を有するものであった。In this way, in the fiberboard manufacturing method using the dry method,
It is required that the adhesive added during or after defibration be sufficiently adhered to and mixed with the wood fibers without pre-curing, but all conventional methods are insufficient in this respect, and each method has problems as described above. It had some drawbacks.
く課題を解決するための手段〉
従って本発明の目的は従来法による欠点を解消すること
のできる新規な乾式繊維板の製造方法を提供することに
ある。Means for Solving the Problems Accordingly, an object of the present invention is to provide a novel method for manufacturing dry-processed fiberboard that can overcome the drawbacks of the conventional methods.
かかる目的を遠戚するために、本発明においては、接着
剤の成分組成及び硬化反応に着目し、従来木繊維に添加
される熱硬化性樹脂接着剤の成分中の架橋剤と単量体と
を別々に添加混合し、これらの架橋反応による樹脂生成
及びその硬化がポド中にて発揮されるように構成したも
のである。In order to achieve this objective, the present invention focuses on the component composition and curing reaction of adhesives, and investigates the crosslinking agent and monomer in the components of thermosetting resin adhesives conventionally added to wood fibers. are added and mixed separately, and resin production and curing through these crosslinking reactions are performed in the pod.
ここで熱硬化性樹脂接着剤とは主として尿素樹脂接着剤
又はメラミン樹脂接着剤であって、アルデヒド特にホル
ムアルデヒドを架橋剤とし、単量体である尿素又はメラ
ミンとメチレン化反応によって架橋結合されて、所望の
樹脂形成がなされるものである。この架橋反応は塩化ア
ンモニウム等の酸触媒の存在下で促進される。Here, the thermosetting resin adhesive is mainly a urea resin adhesive or a melamine resin adhesive, which is crosslinked with the monomer urea or melamine by a methylene reaction using aldehyde, particularly formaldehyde, as a crosslinking agent. The desired resin formation is achieved. This crosslinking reaction is promoted in the presence of an acid catalyst such as ammonium chloride.
本発明方法は上記のように熱硬化性樹脂接着剤中の架橋
剤と単量体とを別々に添加混合し、それらの反応を最終
的にボード中において行うことを主たる特徴とするもの
であり、これら架橋剤と単量体との添加時点については
各種の態様が想定され得る。なお以下の態様においては
いずれも架橋剤を単量体よりも後の段階で添加するもの
としているか、これは架橋剤として好適に用いられるホ
ルマリンが高揮発性を有するために、これを先に単独で
添加すると有効な架橋反応が起こりにくいためである。The main feature of the method of the present invention is that, as described above, the crosslinking agent and monomer in the thermosetting resin adhesive are separately added and mixed, and their reaction is finally carried out in the board. Various aspects can be assumed regarding the point of addition of these crosslinking agents and monomers. In all of the following embodiments, the crosslinking agent is added at a later stage than the monomer, or this is because formalin, which is preferably used as a crosslinking agent, has high volatility. This is because effective crosslinking reactions are difficult to occur when added at
第１の方法は、まず木材チップを蒸煮装置に投入して蒸
煮し、この蒸煮によって可塑化、軟化された木材チップ
を解繊装置によって解繊して木繊維を得る。蒸煮装置と
解繊装置とを連続することによって高圧下で解繊するよ
うにしても良い。モして解繊装置において木材チップを
解繊する際、同時にホルムアルデヒドとメチレン化反応
を起こす単量体を添加する。解繊された木繊維は、含水
率が高くその表面及び内部に単量体が付着または含浸さ
れた状態として得られる。In the first method, wood chips are first put into a steamer and steamed, and the wood chips plasticized and softened by the steaming are defibrated by a fibrillator to obtain wood fibers. The defibration may be carried out under high pressure by connecting the steaming device and the defibrating device in succession. When the wood chips are defibrated in a fibrillator, a monomer that causes a methylene reaction with formaldehyde is added at the same time. The defibrated wood fibers have a high moisture content and are obtained with monomers attached to or impregnated on the surface and inside.
解繊された木繊維は次いでダクトを通じてフラッシュド
ライヤー等の乾燥装置に送られる。木繊維は風送されつ
つ乾燥が行われ、５〜２０％程度の含水率に乾燥される
。乾燥された木繊維は次工程の混合装置まで風送され、
該混合装置においてホルマリン及び酸触媒を添加し混合
する。ホルマリン及び酸触媒の添加は同時に行っても良
いが、まずホルマリンを添加し一定時間混合した後に酸
触媒と添加し更に混合することが好ましい。混合装置内
でのホルマリン及び酸触媒の添加混合によって、木繊維
の表面及び内部に付着または含浸されている単量体がホ
ルムアルデヒドと経時的にメチレン化反応を起こし、木
繊維の表面及び内部において樹脂生成がなされる。The defibrated wood fibers are then sent through a duct to a drying device such as a flash dryer. The wood fibers are dried while being blown with air to a moisture content of about 5 to 20%. The dried wood fibers are air blown to the next process of mixing equipment.
Formalin and acid catalyst are added and mixed in the mixing device. Although formalin and acid catalyst may be added at the same time, it is preferable to first add formalin and mix for a certain period of time, then add and further mix with acid catalyst. By adding and mixing formalin and an acid catalyst in a mixing device, the monomers attached to or impregnated on the surface and inside of the wood fibers undergo a methylenation reaction with formaldehyde over time, resulting in resin formation on the surface and inside of the wood fibers. generation is done.
木繊維は混合装置より更に風送されてフォーミング装置
に投入され、一定厚みの連続したマット状に堆積される
。マット状の木繊維は仮圧締した後、任意長に切断して
マット状ボードを得る。次にマット状ボードをホットプ
レスに挿入して熱圧締することにより、目的とする繊維
板が得られる。The wood fibers are blown further from the mixing device and fed into the forming device, where they are deposited into a continuous mat with a constant thickness. After the mat-shaped wood fibers are temporarily pressed, they are cut into arbitrary lengths to obtain mat-shaped boards. Next, the desired fiberboard is obtained by inserting the mat-like board into a hot press and thermally compressing it.
第２の方法は、単量体の添加混合を解繊時に行うのに代
えて、蒸煮後解繊して得られた木繊維をダクトを通じて
フラッシュドライヤー等の乾燥装置を用いて熱風乾燥す
る際に、このダクト中に単量体を添加して、木繊維に付
着または含浸させる。In the second method, instead of adding and mixing monomers during defibration, the wood fibers obtained by defibrating after steaming are dried with hot air using a drying device such as a flash dryer through a duct. , a monomer is added into this duct to attach or impregnate the wood fibers.
そして第１の方法と同様に、ホルマリン及び酸触媒を同
時に或は別々に、混合装置内で添加混合することによっ
て、木繊維の表面及び内部に付着または含浸されている
単量体とホルムアルデヒドを反応させて樹脂生成を行う
と共に酸触媒の作用によって該樹脂を硬化せしめる。こ
の後、７オーミング及び熱圧締を経て所望の繊維板が得
られる。Then, as in the first method, by adding and mixing formalin and an acid catalyst simultaneously or separately in a mixing device, formaldehyde reacts with the monomers attached to or impregnated on the surface and inside of the wood fibers. In this way, resin is produced and the resin is cured by the action of an acid catalyst. Thereafter, the desired fiberboard is obtained through 7 ohm heating and hot pressing.
第３の方法は、単量体の添加を木材チップの解繊時に行
って、解繊された木繊維の表面及び内部に付着または含
浸させる点は第１の方法と同様であるが、これをダクト
を通じてフラッシュドライヤー等の乾燥装置を用いて熱
風乾燥する際に、そのダクト中にホルマリン及び酸触媒
を添加して、木繊維の表面及び内部に付着または含浸さ
れている単量体とホルムアルデヒドを反応させて樹脂生
成を行うと共に酸触媒の作用によって生成樹脂を硬化せ
しめるものである。この後、７オーミング及び熱圧締を
経て所望の繊維板が得られる。この方法によれば混合装
置を必要としない。The third method is similar to the first method in that the monomer is added to the surface and inside of the defibrated wood fibers by adding the monomer during defibration of the wood chips. When drying with hot air through a duct using a drying device such as a flash dryer, formalin and an acid catalyst are added into the duct to react with formaldehyde and monomers attached to or impregnated on the surface and inside of the wood fibers. In this method, resin is produced and the produced resin is cured by the action of an acid catalyst. Thereafter, the desired fiberboard is obtained through 7 ohm heating and hot pressing. This method does not require a mixing device.
上記各方法において、生成される樹脂接着剤量は木繊維
比で４〜１２％の範囲となるように添加することが好ま
しい。また単量体１モルに対して３０％〜５０％ホルマ
リンを１．５〜３．５モルの範囲で用いることが好まし
い。In each of the above methods, it is preferable that the amount of the resin adhesive produced is in the range of 4 to 12% based on the wood fiber ratio. Further, it is preferable to use 30% to 50% formalin in a range of 1.5 to 3.5 mol per mol of monomer.
く作用〉
繊維板を乾式法によって製造するに際し、熱硬化性樹脂
接着剤中の架橋剤と単量体とが別々に添加混合されるの
で、これらのうちの後の添加時点からこれら間の架橋反
応が開始され、更に該後の添加時点と同時に或はそれよ
りも更に後の時点で酸触媒か添加されて該架橋反応か促
進される。架橋剤と単量体のいずれか後に添加されるも
のはフォーミングの直前の時点で添加されるので、該熱
硬化性樹脂接着剤の樹脂生成がフォーミングされたボー
ド中にて行われる。Effect> When producing fiberboard by the dry process, the crosslinking agent and monomer in the thermosetting resin adhesive are added and mixed separately, so the crosslinking between them starts from the later addition point. The reaction is initiated and an acid catalyst is added at the same time or even later than the later addition to accelerate the crosslinking reaction. Since either the crosslinking agent or the monomer added later is added just before forming, the resin formation of the thermosetting resin adhesive takes place in the formed board.
〈実施例〉
上記した第１乃至第３の手法に基づいて、まずホルマリ
ン（４０％Ｉ−Ｉ ＣＨ○ａｑｕｅ、） ７５０ｇを添
加した後に尿素３００ｇを添加してフォーミングを行っ
た。この場合の尿素：ホルマリンのモル比はｌ：２であ
る。３’ Ｘ６’ サイズ、厚さ１０ｍｍ１
のボード成形時において、木繊維１３ｋｇに対し尿素樹
脂接着剤か１．０５ｋｇが生成され、対木繊維の尿素樹
脂接着剤量は約８％であった。製造された繊維板はいず
れも十分な接着強度を有し、レジン・スボッ１−のない
高品質のものであった。<Example> Based on the first to third methods described above, 750 g of formalin (40% I-I CH○aque) was first added, and then 300 g of urea was added to perform foaming. The molar ratio of urea:formalin in this case is 1:2. When molding a board of size 3' x 6' and thickness 10 mm1, 1.05 kg of urea resin adhesive was produced for 13 kg of wood fibers, and the amount of urea resin adhesive for wood fibers was about 8%. All of the manufactured fiberboards had sufficient adhesive strength and were of high quality with no resin spots.
〈発明の効果〉
本発明方法によれば、リファイナーやブレンタ或は熱風
風送ダクト中にて接着剤がプレキュアすることによる弊
害か防止され、十分な接着強度を有し且つレジン・スポ
ットの見られない高品質の繊維板を定常的に得ることが
てきる。<Effects of the Invention> According to the method of the present invention, the harmful effects of precure of the adhesive in a refiner, blender, or hot air duct are prevented, and the adhesive has sufficient adhesive strength and no resin spots are observed. It is possible to obtain high quality fiberboard regularly.
Claims (5)
ングしてボードとし、次いで該ボードを熱圧成形して繊
維板を得る方法において、架橋剤と該架橋剤と架橋反応
を起こす単量体とを異なる段階で添加し更に該架橋反応
を促進せしめる酸触媒を後の段階で添加される架橋剤又
は単量体と同時に或はより後の段階で添加し、上記ボー
ド中で上記架橋剤と単量体との架橋反応によって形成さ
れる熱硬化性樹脂接着剤を樹脂生成させると共にこれを
硬化せしめるよう構成したことを特徴とする、乾式繊維
板の製造方法。(1) In the method of defibrating wood chips, forming the obtained wood fibers to form a board, and then hot-pressing the board to obtain a fiberboard, a crosslinking agent and a monomer that causes a crosslinking reaction with the crosslinking agent are used. The crosslinking agent or monomer is added at different stages, and an acid catalyst for promoting the crosslinking reaction is added at the same time as the crosslinking agent or monomer added at a later stage, or at a later stage, and the crosslinking reaction is carried out in the board. 1. A method for manufacturing a dry-type fiberboard, comprising: generating a thermosetting resin adhesive formed by a crosslinking reaction between an agent and a monomer, and curing the same.
、その解繊時に、架橋剤と架橋反応を起こす単量体を添
加して該木繊維に付着ないし含浸せしめ、得られた木繊
維を乾燥し、乾燥された木繊維に架橋剤を添加混合して
単量体と架橋反応させて樹脂生成させた後、該架橋反応
を促進せしめる酸触媒を添加し、更に木繊維をマット状
に堆積し、熱圧成形を行う工程より成ることを特徴とす
る、乾式繊維板の製造方法。(2) When wood fibers are obtained by defibrating wood chips after steaming, a monomer that causes a crosslinking reaction with a crosslinking agent is added at the time of defibration to adhere to or impregnate the wood fibers. After drying the wood fibers, adding and mixing a crosslinking agent to the dried wood fibers and causing a crosslinking reaction with the monomer to produce a resin, an acid catalyst that accelerates the crosslinking reaction is added, and then the wood fibers are matted. 1. A method for producing dry-type fiberboard, comprising the steps of depositing the fiberboard into a shape and hot-pressing it.
の木繊維をダクトを通じて風送乾燥する際に、該ダクト
中に架橋剤と架橋反応を起こす単量体を添加して該木繊
維に付着ないし含浸せしめ、得られた木繊維を乾燥し、
乾燥された木繊維に架橋剤を添加混合して単量体と架橋
反応させて樹脂生成させた後、該架橋反応を促進せしめ
る酸触媒を添加し、更に木繊維をマット状に堆積し、熱
圧成形を行う工程より成ることを特徴とする、乾式繊維
板の製造方法。(3) Wood chips are steamed and defibrated to obtain wood fibers, and when the wood fibers are air-dried through a duct, a monomer that causes a cross-linking reaction with a cross-linking agent is added to the duct. Adhere to or impregnate wood fibers, dry the resulting wood fibers,
After adding and mixing a crosslinking agent to the dried wood fibers and causing a crosslinking reaction with the monomer to produce a resin, an acid catalyst that accelerates the crosslinking reaction is added, and the wood fibers are deposited in a mat shape and heated. A method for manufacturing dry-processed fiberboard, characterized by comprising a step of pressure forming.
、その解繊時に、架橋剤と架橋反応を起こす単量体を添
加して該木繊維に付着ないし含浸せしめ、得られた木繊
維をダクトを通じて乾燥すると共にそのダクト中に架橋
剤を添加混合して単量体と架橋反応させて樹脂生成させ
た後、該架橋反応を促進せしめる酸触媒を添加し、更に
木繊維をマット状に堆積し、熱圧成形を行う工程より成
ることを特徴とする、乾式繊維板の製造方法。(4) When wood fibers are obtained by defibrating wood chips after steaming, a monomer that causes a crosslinking reaction with a crosslinking agent is added during defibration to adhere to or impregnate the wood fibers. The wood fibers are dried through a duct, and a crosslinking agent is added and mixed into the duct to cause a crosslinking reaction with the monomer to produce a resin, and then an acid catalyst is added to promote the crosslinking reaction, and the wood fibers are matted. 1. A method for producing dry-type fiberboard, comprising the steps of depositing the fiberboard into a shape and hot-pressing it.
ルマリン中のホルムアルデヒドとメチレン化架橋反応す
る尿素又はメラミンである請求項１乃至４のいずれか記
載の乾式繊維板の製造方法。(5) The method for producing a dry-laid fiberboard according to any one of claims 1 to 4, wherein the crosslinking agent is formalin, and the monomer is urea or melamine, which undergoes a methylene crosslinking reaction with formaldehyde in formalin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1195436A JPH0716928B2 (en) | 1989-07-28 | 1989-07-28 | Method of manufacturing dry fiberboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1195436A JPH0716928B2 (en) | 1989-07-28 | 1989-07-28 | Method of manufacturing dry fiberboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0361004A true JPH0361004A (en) | 1991-03-15 |
| JPH0716928B2 JPH0716928B2 (en) | 1995-03-01 |
Family
ID=16341031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1195436A Expired - Fee Related JPH0716928B2 (en) | 1989-07-28 | 1989-07-28 | Method of manufacturing dry fiberboard |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716928B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6368528B1 (en) | 1998-10-30 | 2002-04-09 | Masonite Corporation | Method of making molded composite articles |
| JP2018516784A (en) * | 2015-05-26 | 2018-06-28 | コラボレイティブ アグレゲイツ， エルエルシー | Lignocellulose composite and production method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51112884A (en) * | 1975-03-31 | 1976-10-05 | Noda Plywood Mfg Co Ltd | Process for producing fiberboard and particleboard |
| JPS61163804A (en) * | 1985-01-17 | 1986-07-24 | 三建化工株式会社 | Method of hardening woody material impregnated with resin |
-
1989
- 1989-07-28 JP JP1195436A patent/JPH0716928B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51112884A (en) * | 1975-03-31 | 1976-10-05 | Noda Plywood Mfg Co Ltd | Process for producing fiberboard and particleboard |
| JPS61163804A (en) * | 1985-01-17 | 1986-07-24 | 三建化工株式会社 | Method of hardening woody material impregnated with resin |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6368528B1 (en) | 1998-10-30 | 2002-04-09 | Masonite Corporation | Method of making molded composite articles |
| JP2018516784A (en) * | 2015-05-26 | 2018-06-28 | コラボレイティブ アグレゲイツ， エルエルシー | Lignocellulose composite and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716928B2 (en) | 1995-03-01 |
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