JP2976485B2 - Method for producing fine fiberized pulp - Google Patents
Method for producing fine fiberized pulpInfo
- Publication number
- JP2976485B2 JP2976485B2 JP2116492A JP11649290A JP2976485B2 JP 2976485 B2 JP2976485 B2 JP 2976485B2 JP 2116492 A JP2116492 A JP 2116492A JP 11649290 A JP11649290 A JP 11649290A JP 2976485 B2 JP2976485 B2 JP 2976485B2
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- fine
- fine fiberized
- fibers
- surface area
- 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.)
- Expired - Fee Related
Links
Landscapes
- Crushing And Grinding (AREA)
- Paper (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、紙の製造過程でパルプ繊維と併用する事に
より紙力強度を強める働きをする微細繊維化パルプの製
造方法に関し、更に詳しくは微細繊維化パルプを、簡便
に、大量に、且つ安価に製造する方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing a fine fiberized pulp which functions to enhance the paper strength by being used in combination with pulp fibers in a paper production process. The present invention relates to a method for easily, in large quantities, and inexpensively producing fine fiberized pulp.
パルプ繊維を抄紙する際に、パルプを叩解してパルプ
繊維間結合を強めることは、製紙技術の誕生以来行なわ
れている。叩解によってパルプ繊維に現われる現象は種
々有るが、中でも繊維間結合に重要な影響を与える因子
として繊維のフィブリル化が挙げられる（Pulp and Pap
er 3rd.Edition,Vol II;J.P.Casey）。When making pulp fibers, beaten pulp to strengthen the bond between pulp fibers has been used since the birth of papermaking technology. There are various phenomena that appear in pulp fibers due to beating. Among them, fibrilization of fibers is one of the factors that have an important effect on interfiber bonding (Pulp and Pap
er 3rd. Edition, Vol II; JPCasey).
フィブリル化は、一般に、パルプ繊維に部分的に生ず
る微細繊維（ミクロフィブリル）が繊維表面積の増大と
繊維間の結合ネットワークの形成に寄与し、パルプ繊維
間結合を強めると考えられている。It is generally considered that fibrillation is such that fine fibers (microfibrils) partially generated in pulp fibers contribute to an increase in fiber surface area and formation of a bonding network between fibers, and strengthen bonding between pulp fibers.
このようにパルプ繊維の一部分に微細繊維を生じさせ
る方法としては、従来から抄紙前に叩解機を使ってパル
プの叩解が行なわれているが、このような叩解機を用い
た方法では、微細繊維はパルプ繊維のごく一部分に生ず
るに過ぎず、紙力強度の優れた紙を得る為に、抄紙に必
要なパルプ全てについて叩解を行う必要がある。As a method for producing fine fibers in a part of the pulp fiber, the pulp is conventionally beaten using a beater before papermaking.However, in the method using such a beater, fine fibers are used. Is generated only in a small part of the pulp fiber, and it is necessary to beat all pulp necessary for papermaking in order to obtain a paper having excellent strength.
このため、容易に紙力増強を行う方法として、パルプ
繊維の全体又は大部分を微細繊維とした微細繊維化パル
プをつくり、抄紙前のパルプスラリーに添加して紙力を
増強する方法（特公昭62−33360号）が提案されてい
る。この微細繊維化パルプを得るには、パルプ懸濁液を
500kg/cm2程度の高圧下で、小径のオリフィスを高速度
で通過させる方法が行われているが、特殊な装置で、然
も少量しか製造することができないという問題がある。For this reason, as a method of easily increasing the paper strength, there is a method of producing a fine fiberized pulp in which all or most of the pulp fibers are fine fibers and adding the resulting pulp to a pulp slurry before papermaking to enhance the paper strength (Japanese Patent Publication No. No. 62-33360) has been proposed. To obtain this fine fiberized pulp, the pulp suspension is
A method of passing a small-diameter orifice at a high speed under a high pressure of about 500 kg / cm 2 is used, but there is a problem that a small amount can be produced by a special device.
本発明は、パルプ繊維と併用する事により、繊維間結
合を強め、紙力強度を増強する働きをする微細繊維化パ
ルプを簡便に、大量に、且つ安価に製造しようとするも
のである。An object of the present invention is to produce a fine fiberized pulp which functions to strengthen the inter-fiber bond and enhance the paper strength by being used in combination with pulp fibers in a simple, large-scale, and inexpensive manner.
本発明は、濃度0.1〜5.0％のパルプの水懸濁液を、ガ
ラス、ジルコン及びセラミックから選ばれたビーズを40
〜90％の充填率で充填したサンドミル内で処理する事を
特徴とする、乾燥機のBET法による比表面積が10m2/g以
上である微細繊維化パルプの製造方法である。The present invention relates to a method of preparing an aqueous suspension of pulp having a concentration of 0.1 to 5.0% by using beads selected from glass, zircon and ceramic.
A method for producing a fine fiberized pulp having a specific surface area of 10 m 2 / g or more by a BET method using a dryer, characterized in that the pulp is treated in a sand mill filled with a filling rate of up to 90%.
本発明は、上記の如く微細繊維化パルプを製造するた
めにサンドミルで処理することが特徴である。The present invention is characterized in that the pulp is treated with a sand mill in order to produce the pulp having fine fibers as described above.
サンドミルでの処理条件は、用いる装置に依存するた
め、一概に言えないが、例えば以下のように処理すれば
よい。Since the processing conditions in the sand mill depend on the equipment used, it cannot be said unconditionally. For example, the processing may be performed as follows.
使用できるビーズは、ガラス、ジルコン、セラミック
等通常の材料で1.0〜1.2mmの汎用ビーズで充分に効果を
発揮する。ビーズの充填率は、パルプの種類によって多
少変化させる必要があるが、Ｎ材の場合40〜60％、Ｌ材
の場合70〜90％が適当な範囲である。ヒーズの撹拌の回
転数は1000〜1800rpm程度の範囲で効果的に微細化する
ことができる。The beads that can be used are ordinary materials such as glass, zircon, and ceramic, and general-purpose beads having a diameter of 1.0 to 1.2 mm are sufficiently effective. The filling rate of the beads needs to be changed slightly depending on the type of pulp, but an appropriate range is 40 to 60% for N material and 70 to 90% for L material. The number of rotations of the heat agitation can be effectively reduced to a range of about 1000 to 1800 rpm.
なお、サンドミルの形態は縦型・横型があるが、本発
明に関してはどちらも使用可能である。In addition, although there are a vertical type and a horizontal type in the form of the sand mill, both can be used in the present invention.
処理するパルプ水懸濁液のパルプ濃度は、ビーズ量と
のバランスをとることで、0.1〜5.0％程度の範囲で調節
することが可能であるが、微細化度と処理効率とを考慮
すれば0.3〜0.7％の範囲が好ましい。The pulp concentration of the pulp water suspension to be treated can be adjusted in the range of about 0.1 to 5.0% by balancing with the amount of beads, but if the degree of fineness and treatment efficiency are taken into account, A range of 0.3-0.7% is preferred.
得られた微細繊維化パルプの微細化度を示す指標とし
ては、乾燥後の比表面積を用いる。微細繊維化パルプ懸
濁液を乾燥するには、微細繊維化パルプ懸濁液をエチル
アルコールを用いて約２倍に希釈した後、濾過して得ら
れた沈澱物を再びアルコールに分散し充分撹拌した後濾
過するという操作を繰り返し、懸濁液中の水分をアルコ
ールに置換し、次にヘプタンを用いて同様の操作を繰り
返しアルコールをヘプタンに置換した後、40℃程度の温
風に曝しながら乾燥する方法を用いることができる。こ
うして得られた乾燥微細繊維化パルプをBET法で比表面
積を求める。The specific surface area after drying is used as an index indicating the degree of fineness of the obtained fine fiberized pulp. In order to dry the fine fiberized pulp suspension, the fine fiberized pulp suspension is diluted about twice with ethyl alcohol, and the precipitate obtained by filtration is again dispersed in alcohol and sufficiently stirred. After repeating the operation of filtration, the water in the suspension was replaced with alcohol, and then the same operation was repeated using heptane to replace the alcohol with heptane, followed by drying while exposing to warm air at about 40 ° C. Can be used. The specific surface area of the thus obtained dried fine fiberized pulp is determined by the BET method.
本発明の方法で得られた比表面積が10m2/g以上の微細
繊維化パルプを用いると、紙力強度に優れた紙を提供で
きる。The use of the fine fiberized pulp having a specific surface area of 10 m 2 / g or more obtained by the method of the present invention can provide a paper having excellent paper strength.
サンドミル処理によって得られたパルプの微細繊維化
物を抄紙前の通常の叩解あるいは未叩解パルプ等に混入
させる事により、抄紙された紙の種々の物性を容易に制
御する事が可能になる。なお、未叩解パルプとしては、
通常用いられるLBKP、NBKP、BCTMP、DIP等が使用でき
る。By mixing the fine fiberized product of the pulp obtained by the sand mill treatment into the usual beaten or unbeaten pulp before papermaking, various physical properties of the papermaking paper can be easily controlled. In addition, as unbeaten pulp,
Commonly used LBKP, NBKP, BCTMP, DIP and the like can be used.
以下に本発明の実験例を示し、その方法による実施例
を明示する。Hereinafter, an experimental example of the present invention will be shown, and an example according to the method will be described.
実験例 広葉樹のクラフトパルプ（LBKP）の0.5％水懸濁液を
実験用横型サンドミル（五十嵐機械製作所製、容量:0.5
ガロン、使用ビーズ：粒径1.2mm,ガラス製、ビーズ充填
率:80％、回転数:1500rpm、流量:3/min）で５回,8回
処理を行い、二種類の微細繊維化パルプを得た。この微
細繊維化パルプの比表面積はBET法で20m2/gと40m2/gで
あった。Experimental example A 0.5% aqueous suspension of hardwood kraft pulp (LBKP) was mixed with an experimental horizontal sand mill (Igarashi Kikai Seisakusho, capacity: 0.5
Gallons, beads used: 1.2 mm in diameter, made of glass, bead filling rate: 80%, rotation speed: 1500 rpm, flow rate: 3 / min) 5 times or 8 times to obtain two types of fine fiberized pulp Was. The specific surface area of the fine fiber pulp was 20 m 2 / g and 40 m 2 / g by the BET method.
実施例１ 得られた比表面積が20m2/gの微細繊維化パルプと無処
理のパルプ（LBKP）を5/55の割合で混抄してシートを作
製した。Example 1 A sheet was produced by mixing the obtained fine fiberized pulp having a specific surface area of 20 m 2 / g and untreated pulp (LBKP) at a ratio of 5/55.
実施例２ 得られた比表面積が20m2/gの微細繊維化パルプと無処
理のパルプ（LBKP）を10/50の割合で混抄してシートを
作製した。Example 2 A sheet was prepared by mixing the obtained fine fiberized pulp having a specific surface area of 20 m 2 / g and untreated pulp (LBKP) at a ratio of 10/50.
実施例３ 得られた比表面積が40m2/gの微細繊維化パルプと無処
理のパルプ（LBKP）を5/55の割合で混抄してシートを作
製した。Example 3 A sheet was prepared by mixing the obtained microfibrillated pulp having a specific surface area of 40 m 2 / g and untreated pulp (LBKP) at a ratio of 5/55.
実施例４ 得られた比表面積が40m2/gの微細繊維化パルプと無処
理のパルプ（LBKP）を10/50の割合で混抄してシートを
作製した。Example 4 A sheet was produced by mixing the obtained fine fiberized pulp having a specific surface area of 40 m 2 / g and untreated pulp (LBKP) at a ratio of 10/50.
比較例 微細繊維化処理をする前のLBKPを60部を手漉して得ら
れたシートを得た。Comparative Example A sheet was obtained by hand-straining 60 parts of LBKP before the microfibrillation treatment.
かくして得られたシートを下記の紙力試験を行い、そ
の結果を第１表に示した。The sheet thus obtained was subjected to the following paper strength test, and the results are shown in Table 1.
「透気度」 ガーレー式透気度計での測定値（高圧又は低圧）。"Air permeability" Measured value (high pressure or low pressure) by Gurley type air permeability meter.
「張力」 テンシロン引張試験機を用いて測定した。"Tension" was measured using a Tensilon tensile tester.
「破裂」 ミューレン張裂度計を用いて測定した。"Rupture" was measured using a Mullen tenacity meter.
〔効果〕 このように、サンドミル処理により得られた微細繊維
化パルプは、叩解前のパルプと併用する事により紙力強
度を向上させる事ができる。サンドミル処理は工業的に
も困難な技術ではなく、非常に簡便に微細繊維化パルプ
を得ることができる。 [Effect] As described above, the fine fiberized pulp obtained by the sand mill treatment can improve the paper strength by being used in combination with the pulp before beating. Sand milling is not a technically difficult technique, and it is possible to very easily obtain a fine fiberized pulp.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山平 仁 兵庫県尼崎市常光寺４丁目３番１号 神 崎製紙株式会社神崎工場内 (56)参考文献 特開 昭62−127000（ＪＰ，Ａ) 特公 昭30−3952（ＪＰ，Ｂ１) 特公 昭25−1352（ＪＰ，Ｂ１) 特許181364（ＪＰ，Ｃ２) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hitoshi Yamahira 4-3-1 Jokoji, Amagasaki City, Hyogo Prefecture Kanzaki Paper Co., Ltd. Kanzaki Mill (56) References JP-A-62-127000 (JP, A) JP 303952 (JP, B1) JP-B 25-1352 (JP, B1) Patent 181364 (JP, C2)
Claims (1)
ラス、ジルコン及びセラミックから選ばれたビーズを40
〜90％の充填率で充填したサンドミル内で処理する事を
特徴とする、乾燥後のBET法による比表面積が10m2/g以
上である微細繊維化パルプの製造方法。An aqueous suspension of pulp having a concentration of 0.1-5.0% is mixed with beads selected from glass, zircon and ceramic.
A method for producing a fine fibrous pulp having a specific surface area of 10 m 2 / g or more by a BET method after drying, characterized in that the pulp is processed in a sand mill filled with a filling rate of up to 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2116492A JP2976485B2 (en) | 1990-05-02 | 1990-05-02 | Method for producing fine fiberized pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2116492A JP2976485B2 (en) | 1990-05-02 | 1990-05-02 | Method for producing fine fiberized pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0418186A JPH0418186A (en) | 1992-01-22 |
| JP2976485B2 true JP2976485B2 (en) | 1999-11-10 |
Family
ID=14688471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2116492A Expired - Fee Related JP2976485B2 (en) | 1990-05-02 | 1990-05-02 | Method for producing fine fiberized pulp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2976485B2 (en) |
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| EP1936032A1 (en) * | 2006-12-18 | 2008-06-25 | Akzo Nobel N.V. | Method of producing a paper product |
| CN101815820B (en) * | 2007-10-05 | 2012-03-07 | 松下电器产业株式会社 | Fine natural fiber and speaker diaphragm, speaker and device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPH0418186A (en) | 1992-01-22 |
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