JP2000265383A - Deinking of waste paper - Google Patents
Deinking of waste paperInfo
- Publication number
- JP2000265383A JP2000265383A JP6771199A JP6771199A JP2000265383A JP 2000265383 A JP2000265383 A JP 2000265383A JP 6771199 A JP6771199 A JP 6771199A JP 6771199 A JP6771199 A JP 6771199A JP 2000265383 A JP2000265383 A JP 2000265383A
- Authority
- JP
- Japan
- Prior art keywords
- waste paper
- toner
- inorganic
- ink
- printed
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はトナー印刷物からな
るか或いはトナー印刷物が混入している、トナー印刷さ
れた古紙から脱墨パルプを製造する方法に関する。更に
詳しくは、トナー印刷物からなるか或いはトナー印刷物
が混入している、トナー印刷された古紙を、印刷用紙用
の無機填料および／または無機顔料或いは印刷或いは未
印刷塗工紙の様な無機填料および／または無機顔料の多
い古紙の共存下に、同時に脱墨することにより、従来、
難脱墨性であったトナー印刷された古紙の脱墨性を飛躍
的に向上させ、残留インキの少ない再生パルプを製造す
る方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing deinked pulp from waste toner-printed paper which is made of or contains toner prints. More specifically, waste toner-printed paper consisting of or containing toner prints can be treated with inorganic fillers and / or pigments for printing paper or inorganic fillers such as printed or unprinted coated paper. By deinking at the same time in the presence of waste paper containing many inorganic pigments,
The present invention relates to a method for producing reclaimed pulp with little residual ink by remarkably improving the deinking property of waste paper printed with toner, which has been difficult to deink.
【０００２】[0002]
【従来の技術】近年、省資源或いは地球規模での環境保
護といった観点から、古紙の再生利用率のアップの需要
性が注目される中で、古紙をより高度に処理し、再生利
用の範囲を拡大することが当業界における極めて重要な
課題となっている。2. Description of the Related Art In recent years, from the viewpoint of resource saving or environmental protection on a global scale, the demand for increasing the recycling rate of used paper has been attracting attention. Expansion is a crucial issue in the industry.
【０００３】しかしながら、オフィス古紙の利用率はト
ナー印刷物の難脱墨性のため新聞紙や板紙と比べて低い
のが現状である。However, at present, the utilization rate of waste office paper is lower than that of newsprint or paperboard due to the difficulty in removing ink from toner prints.
【０００４】従来、このトナー印刷された古紙の脱墨方
法については、古紙を離解し、ニーダーやディスパーザ
ーによる機械的せん断力を利用した混練・分散もしくは
インキ剥離によりトナーインキの繊維からの剥離および
微細化を行い、続いて浮遊選別・洗浄により脱インキを
行うのが主流である。しかしながら、トナーインキは繊
維と強固に接着されているため、残留インクの少ないパ
ルプを製造するには数回もニーダーやディスパーザーを
通して機械的せん断力を繊維に与えることが必要であ
る。Conventionally, a method for deinking waste toner-printed waste paper is to disintegrate the waste paper, knead and disperse the waste paper using mechanical shearing force by a kneader or disperser, or peel off the ink to remove the toner ink from the fibers. The mainstream is to make finer and then perform deinking by floating sorting and washing. However, since the toner ink is firmly adhered to the fiber, it is necessary to apply a mechanical shear force to the fiber several times through a kneader or a disperser in order to produce a pulp having a low residual ink.
【０００５】また、最近では、酵素を用いて脱墨を行う
方法についても数多くの検討がなされている。特開昭５
９−９２９９号公報や特開昭６３−５９４９４号公報で
はセルロース分解酵素であるセルラーゼを用いている。
しかしながら、上記の方法では繊維からのインキの剥離
が不十分であり、残留インキの少ないパルプが得られ難
い。Recently, many studies have been made on a method of performing deinking using an enzyme. JP 5
In JP-A-9-9299 and JP-A-63-59494, cellulase, which is a cellulolytic enzyme, is used.
However, in the above-mentioned method, the peeling of the ink from the fiber is insufficient, and it is difficult to obtain a pulp having a small amount of residual ink.
【０００６】[0006]
【発明が解決しようとする課題】この発明は上記のごと
き従来の方法の欠点を解消すべく、トナーインキの繊維
からの剥離および微細化を促進し、残留インキの少ない
再生パルプを製造する方法を提供するためになされたも
のである。SUMMARY OF THE INVENTION In order to overcome the drawbacks of the conventional methods as described above, the present invention provides a method for producing a regenerated pulp which promotes peeling and miniaturization of toner ink from fibers and which has little residual ink. It was made to provide.
【０００７】[0007]
【課題を解決するための手段】本発明はトナー印刷され
た古紙の脱墨方法について、鋭意研究を重ねた結果、ト
ナー印刷された古紙に、印刷用紙用の無機填料および／
または無機顔料或いは印刷もしくは未印刷の塗工紙古紙
の様に無機填料および／または無機顔料の多い古紙の共
存下に同時に処理することにより、別添の印刷用紙用の
無機填料および／または無機顔料或いは無機填料および
／または無機顔料の多い古紙から発生した多量の無機填
料および／または無機顔料、または更に追添加した無機
填料および／または無機顔料が研磨剤のように、トナー
インキを微細化しながら繊維から剥がすことを見いだ
し、この知見にもとづいて本発明を完成するに至った。According to the present invention, as a result of intensive studies on a method of deinking waste toner-printed waste paper, an inorganic filler for printing paper and / or an inorganic filler for printing paper is added to the toner-printed waste paper.
Or an inorganic pigment and / or an inorganic pigment for separately attached printing paper by simultaneously treating with an inorganic pigment or an inorganic filler and / or a waste paper containing a large amount of the inorganic pigment such as a printed or unprinted coated waste paper. Alternatively, a large amount of the inorganic filler and / or the inorganic pigment generated from the waste paper containing a large amount of the inorganic filler and / or the inorganic pigment, or the inorganic filler and / or the inorganic pigment additionally added may be used as a polishing agent to reduce the fineness of the toner ink while reducing the fiber. The present invention was completed based on this finding.
【０００８】[0008]
【発明の実施の形態】本発明は、従来の離解工程、混練
・分散もしくはインキ剥離工程、浮遊選別工程、洗浄工
程からなる脱墨処理工程に適用できる。必要に応じて苛
性ソーダ、珪酸ソーダ、過酸化水素、界面活性剤を加え
パルパー等での離解を行った後、ニーダーやディスパー
ザー等による機械的せん断力を利用した混練・分散によ
りトナーインキの繊維からの剥離および微細化を行い、
続いて浮遊選別・洗浄により脱インキを行う。用いる装
置或いは処理条件については、特に制限はない。また、
異物除去や高白色度化が必要ならば、上記脱墨処理工程
に、通常用いられている異物除去工程および漂白工程等
を組み入れることが出来る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied to a conventional deinking process including a defibration process, a kneading / dispersing or ink peeling process, a floating sorting process, and a washing process. If necessary, add caustic soda, sodium silicate, hydrogen peroxide, and a surfactant and disintegrate with a pulper. Peeling and miniaturization,
Subsequently, deinking is performed by floating sorting and washing. There are no particular restrictions on the equipment or processing conditions used. Also,
If it is necessary to remove foreign matter and increase the whiteness, a commonly used foreign matter removing step, bleaching step, and the like can be incorporated into the deinking treatment step.
【０００９】本発明は、コンピューターアウトプット古
紙および電子写真方式により複写または印刷されたＯＡ
古紙等のトナー印刷物、或いはこれらのトナー印刷物が
混入した古紙に適用できる。また、古紙全体に占めるト
ナー印刷物の割合については、特に制限はない。The present invention relates to a computer output waste paper and an OA copied or printed by an electrophotographic method.
The present invention can be applied to toner printed matter such as waste paper, or used paper mixed with these toner printed matter. Further, there is no particular limitation on the ratio of the toner print to the entire waste paper.
【００１０】一方、本発明に用いる無機填料および／ま
たは無機顔料を含む古紙としては、無機填料および／ま
たは無機顔料が含まれているものならばその種類はなん
ら限定されるものではないが、混合する無機填料および
／または無機顔料、特に無機顔料が多いほど研磨剤とし
ての効果が高くなるため、無機填料および／または無機
顔料の比率望ましくは無機顔料の比率が本脱墨処理に供
する全古紙の絶乾量に対して１２．０重量％以上になる
ように配合するのが好ましい。印刷もしくは未印刷の塗
工紙古紙の様な無機填料および／または無機顔料、特に
無機顔料の多い古紙等を使用することが、好適である。On the other hand, the used paper containing the inorganic filler and / or the inorganic pigment used in the present invention is not particularly limited as long as it contains the inorganic filler and / or the inorganic pigment. The more inorganic filler and / or inorganic pigment, especially the more inorganic pigment, the higher the effect as an abrasive, the higher the ratio of inorganic filler and / or inorganic pigment, preferably the ratio of inorganic pigment to the total waste paper used in the deinking process. It is preferable to mix them in an amount of 12.0% by weight or more based on the absolute dry amount. It is preferable to use inorganic fillers and / or inorganic pigments, such as printed or unprinted coated waste paper, especially waste paper rich in inorganic pigments.
【００１１】また、本発明における無機填料および／ま
たは無機顔料としては、通常の非塗工紙もしくは塗工紙
に用いられる無機物、具体的には硫酸バリウム、炭酸カ
ルシウム、クレー（カオリン）、サチンホワイト、合成
シリカ、珪酸塩、タルク、二酸化チタン、亜鉛、水酸化
アルミニウム等がある。中でも特に、炭酸カルシウム、
クレー、タルク、合成シリカ、珪酸塩が好適であり、こ
れらのうち一種類もしくは二種類以上の組み合わせにお
いて十分な効果を発揮する。The inorganic fillers and / or inorganic pigments in the present invention include inorganic substances used in ordinary uncoated paper or coated paper, specifically, barium sulfate, calcium carbonate, clay (kaolin), and satin white. , Synthetic silica, silicate, talc, titanium dioxide, zinc, aluminum hydroxide and the like. Especially, calcium carbonate,
Clay, talc, synthetic silica, and silicate are preferred, and one or more of them exhibit a sufficient effect.
【００１２】なお、本発明における、トナー印刷物或い
はトナー印刷物が混入した古紙、および無機填料および
／または無機顔料の多い古紙は、次のいずれでも処理で
きる。In the present invention, the toner printed matter or the waste paper mixed with the toner printed matter and the waste paper containing a large amount of the inorganic filler and / or the inorganic pigment can be treated by any of the following methods.
【００１３】すなわち、 （１）トナー印刷物もしくはトナー印刷物が混入した古
紙、および無機填料および／または無機顔料の多い古紙
を混合し、同時に離解処理した後、混練・分散もしくは
インキ剥離工程に供する。 （２）トナー印刷物もしくはトナー印刷物が混入した古
紙、および無機填料および／または無機顔料の多い古紙
をそれぞれ別々に離解処理し、その後混合した後、混練
・分散もしくはインキ剥離工程に供する。 （３）トナー印刷物もしくはトナー印刷物が混入した古
紙、および無機填料および／または無機顔料の多い古紙
を混合し、同時に離解処理した後、無機填料および／ま
たは無機顔料を添加し、その後混練・分散もしくはイン
キ剥離工程に供する。 （４）トナー印刷物もしくはトナー印刷物が混入した古
紙、および無機填料および／または無機顔料の多い古紙
をそれぞれ別々に離解処理した後混合し、更に無機填料
および／または無機顔料を添加した後、混練・分散もし
くはインキ剥離工程に供する。 であるが、これらは設備仕様等に合わせて適宜選定する
ことができる。That is, (1) Toner-printed material or used paper mixed with the toner-printed material and used paper containing a large amount of inorganic filler and / or inorganic pigment are mixed and defibrated at the same time, and then subjected to a kneading / dispersion or ink peeling step. (2) The toner printed matter or the waste paper mixed with the toner printed matter, and the waste paper containing a large amount of the inorganic filler and / or the inorganic pigment are separately defibrated and then mixed, and then subjected to a kneading / dispersion or ink peeling step. (3) Toner printed matter or waste paper mixed with toner printed matter, and waste paper containing a large amount of inorganic filler and / or inorganic pigment are mixed and defibrated at the same time, and then the inorganic filler and / or inorganic pigment is added, followed by kneading / dispersing or Provide for the ink peeling step. (4) Toner printed matter or waste paper mixed with toner printed matter, and waste paper containing a large amount of inorganic filler and / or inorganic pigment are separately disaggregated and then mixed, and further kneaded after addition of inorganic filler and / or inorganic pigment. Provide for dispersion or ink stripping step. However, these can be appropriately selected according to the equipment specifications and the like.
【００１４】[0014]
【発明の効果】本発明による方法では、印刷もしくは未
印刷の塗工紙古紙の様に無機填料および／または無機顔
料の多い古紙を離解することにより発生する多量の無機
顔料、または更に追添加した無機填料および／または無
機顔料が研磨剤の役割をし、トナーインキを微細化しな
がら繊維から剥がすことから、少ない機械的せん断力で
残留インキの少ない再生パルプを得ることが出来る。In the method according to the present invention, a large amount of inorganic pigment generated by disintegrating waste paper containing a large amount of inorganic fillers and / or inorganic pigments, such as printed or unprinted coated waste paper, or further added. Since the inorganic filler and / or the inorganic pigment serves as an abrasive and peels off the toner ink from the fibers while miniaturizing the toner ink, it is possible to obtain a regenerated pulp having a small residual ink with a small mechanical shearing force.
【００１５】[0015]
【実施例】以下に実施例を挙げて本発明をより具体的に
示すが、本発明は勿論かかる実施例に限定されるもので
はない。EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should be understood that the present invention is by no means restricted to such Examples.
【００１６】以下の実施例、比較例においては、無機填
料および／または無機顔料３３．９重量％の印刷された
塗工紙古紙および無機填料および／または無機顔料５．
４重量％のトナー印刷古紙を用いた。なお、ここで用い
た印刷された塗工紙古紙、トナー印刷古紙の非印刷部分
の坪量はそれぞれ１０５ｇ／ｍ２、６０ｇ／ｍ２であ
り、塗工紙古紙における塗工量は両面で３６ｇ／ｍ
２（塗工部分のみの灰分は８０％）であった。In the following examples and comparative examples, printed coated waste paper of 33.9% by weight of inorganic filler and / or inorganic pigment and inorganic filler and / or inorganic pigment
4% by weight of waste toner printing paper was used. Incidentally, the basis weight of the printed coated paper waste paper, non-printed portion of the toner printed waste paper used here are each 105g / m 2, 60g / m 2, the coating amount in the coated paper used paper is double-sided 36g / M
2 (the ash content of only the coated portion was 80%).
【００１７】また、塗工紙および古紙（非塗工紙）に含
まれる無機填料および／または無機顔料は、ＪＩＳ−Ｐ
８１２５に依り測定した。The inorganic filler and / or the inorganic pigment contained in the coated paper and the waste paper (uncoated paper) are JIS-P
8125.
【００１８】［実施例１］無機填料および／または無機
顔料の比率が、離解後の全紙料（絶乾量）に対して１
２．０重量％になるように、印刷された塗工紙古紙をト
ナー印刷古紙に混合した。その混合古紙絶乾５００ｇに
対して、苛性ソーダ１．０重量％、珪酸ソーダ２．０重
量％、過酸化水素を０．５重量％、高級アルコール系脱
墨剤０．２重量％を加え、水でパルプ濃度１５重量％に
調整した後、５リットル容量のパルパーを用い、４０℃
で、１０分間離解した。その後、パルプ濃度を２５重量
％まで脱水し、更に実験用二軸ニーダーで機械的せん断
力を加えた後、２リットル容量のフローテーターでイン
キを除去した。得られたパルプスラリーをＪＩＳ法に従
って手すきを行い、２０μｍ以上のインキを画像処理に
て測定し、残留インキ面積率を算出した。結果は表１に
示す。 [Example 1] The ratio of the inorganic filler and / or the inorganic pigment was 1 to the total stock (absolute dry amount) after defibration.
The printed coated waste paper was mixed with the toner-printed waste paper so as to have a weight of 2.0% by weight. 1.0% by weight of sodium hydroxide, 2.0% by weight of sodium silicate, 0.5% by weight of hydrogen peroxide and 0.2% by weight of a higher alcohol-based deinking agent were added to 500 g of the dried paper. After adjusting the pulp concentration to 15% by weight with a 5 liter pulper at 40 ° C.
For 10 minutes. Thereafter, the pulp concentration was dehydrated to 25% by weight, and a mechanical shearing force was applied by a biaxial kneader for experiment. Then, the ink was removed by a 2-liter capacity floatator. The obtained pulp slurry was hand-poured according to the JIS method, and the ink having a size of 20 μm or more was measured by image processing to calculate the residual ink area ratio. The results are shown in Table 1.
【００１９】［実施例２］無機填料および／または無機
顔料の比率が、離解後の全紙料（絶乾量）に対して１
５．０重量％となるように、印刷された塗工紙古紙をト
ナー印刷古紙に混合した古紙を使用する以外は、実施例
１と同様な処理を行った。結果は表１に示した。Example 2 The ratio of the inorganic filler and / or the inorganic pigment was 1 to the total stock (absolute dry amount) after defibration.
The same processing as in Example 1 was performed, except that waste paper obtained by mixing printed coated waste paper with waste toner-printed paper so as to be 5.0% by weight was used. The results are shown in Table 1.
【００２０】［実施例３］無機填料および／または無機
顔料の比率が、離解後の全紙料（絶乾量）に対して２
０．０重量％となるように、印刷された塗工紙古紙をト
ナー印刷古紙に混合した古紙を使用する以外は、実施例
１と同様な処理を行った。結果は表１に示した。[Example 3] The ratio of the inorganic filler and / or the inorganic pigment was 2 to the total stock (absolute dry amount) after defibration.
The same processing as in Example 1 was performed except that waste paper obtained by mixing used coated waste paper with waste toner-printed waste paper so as to be 0.0% by weight was used. The results are shown in Table 1.
【００２１】［実施例４］無機填料および／または無機
顔料の比率が、離解後の全紙料（絶乾量）に対して３
０．０重量％となるように、印刷された塗工紙古紙をト
ナー印刷古紙に混合した古紙を使用する以外は、実施例
１と同様な処理を行った。結果は表１に示した。[Example 4] The ratio of the inorganic filler and / or the inorganic pigment was 3 to the total stock (absolute dry amount) after defibration.
The same processing as in Example 1 was performed except that waste paper obtained by mixing used coated waste paper with waste toner-printed waste paper so as to be 0.0% by weight was used. The results are shown in Table 1.
【００２２】［実施例５］実施例１と同じ印刷されたの
塗工紙およびトナー印刷古紙を用いた。印刷された塗工
紙とトナー印刷古紙を、絶乾５００ｇずつ採り、それぞ
れ水でパルプ濃度がおよそ１４重量％になるように調整
した後、苛性ソーダ１．０重量％、珪酸ソーダ２．０重
量％、過酸化水素を０．５重量％、高級アルコール系脱
墨剤０．２重量％を加え、水でパルプ濃度１５重量％に
調整した。その後、それぞれ別々の５リットル容量のパ
ルパーを用い、４０℃で、５分間離解した。その後、無
機填料および／または無機顔料の比率が、離解後の全紙
料（絶乾量）に対して１２．０重量％になるように、両
方のパルプスラリーを混合した。この混合スラリー絶乾
５００ｇ相当量を、別の５リットル容量のパルパーに採
り、４０℃で、５分間離解した。その後、パルプ濃度を
２５重量％まで脱水し、更に実験用二軸ニーダーで機械
的せん断力を加えた後、２リットル容量のフローテータ
ーでインキを除去した。得られたパルプスラリーをＪＩ
Ｓ法に従って手すきを行い、２０μｍ以上のインキを画
像処理にて測定し、残留インキ面積率を算出した。結果
は表１に示した。Example 5 The same coated paper and toner-printed waste paper as used in Example 1 were used. The printed coated paper and the waste toner-printed paper are taken out in an absolutely dry 500 g each, and each is adjusted with water so that the pulp concentration becomes about 14% by weight. Then, 1.0% by weight of sodium hydroxide and 2.0% by weight of sodium silicate are obtained. Then, 0.5% by weight of hydrogen peroxide and 0.2% by weight of a higher alcohol-based deinking agent were added, and the pulp concentration was adjusted to 15% by weight with water. Thereafter, crushing was performed at 40 ° C. for 5 minutes using a separate 5-liter pulper. Thereafter, both pulp slurries were mixed so that the ratio of the inorganic filler and / or the inorganic pigment was 12.0% by weight based on the total paper material (absolute dry amount) after defibration. An equivalent amount of 500 g of the mixed slurry was dried on another 5 liter pulper and disintegrated at 40 ° C. for 5 minutes. Thereafter, the pulp concentration was dehydrated to 25% by weight, and a mechanical shearing force was applied by a biaxial kneader for experiment. Then, the ink was removed by a 2-liter capacity floatator. The obtained pulp slurry was prepared by JI
Hand plowing was performed according to the S method, and the ink of 20 μm or more was measured by image processing to calculate the residual ink area ratio. The results are shown in Table 1.
【００２３】［実施例６］実施例１と同じトナー印刷古
紙のみを用い、炭酸カルシウムを１２．５重量％になる
ように混合した以外は、実施例１と同様な処理を行っ
た。結果は表１に示した。Example 6 The same process as in Example 1 was performed except that only the same waste toner-printed paper as in Example 1 was used and calcium carbonate was mixed to 12.5% by weight. The results are shown in Table 1.
【００２４】［比較例］実施例１と同じトナー印刷古紙
のみを用いた以外は、実施例１と同様な処理を行った。
結果は表１に示した。Comparative Example The same processing as in Example 1 was performed, except that only the same waste toner printing paper as in Example 1 was used.
The results are shown in Table 1.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田部井 宏一 東京都北区王子５−21−１ 日本製紙株式 会社中央研究所内 Ｆターム(参考） 4L055 AA11 AE01 BA37 EA32 FA07 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Koichi Tabei 5-21-1 Oji, Kita-ku, Tokyo F-term in the Central Research Laboratory of Nippon Paper Co., Ltd. 4L055 AA11 AE01 BA37 EA32 FA07
Claims (7)
物が混入している、トナー印刷された古紙の脱墨に際
し、このトナー印刷された古紙の解離工程、混練・分散
もしくはインキ剥離工程、浮遊選別工程および洗浄工程
からなる脱墨処理工程において、別個に添加される印刷
用紙用の無機填料および／または無機顔料を上記の混合
・分散もしくはインキ剥離工程中に共存せしめることを
特徴とする、古紙の脱墨方法。1. A detoning process, a kneading / dispersing or an ink peeling process, and a floating sorting process of a toner-printed waste paper which is made of a toner print or contains a toner print. And a deinking process comprising a washing process, wherein inorganic fillers and / or inorganic pigments for printing paper which are separately added are allowed to coexist in the mixing / dispersing or ink stripping process. Ink method.
機填料および／または無機顔料の総量が、本脱墨処理に
供する全古紙の絶乾量に対して１２．０重量％以上にな
るように、本脱墨処理工程の解離工程および／または混
合・分散もしくはインキ処理工程において印刷用紙用の
無機填料および／または無機顔料を別個に添加すること
を特徴とする、請求項１に記載の古紙の脱墨方法。2. The total amount of the inorganic filler and / or the inorganic pigment during the mixing / dispersion or the ink removing step is 12.0% by weight or more based on the absolute dry amount of all the used paper to be subjected to the deinking treatment. 2. The waste paper according to claim 1, wherein an inorganic filler and / or an inorganic pigment for printing paper is separately added in the dissociation step and / or the mixing / dispersion or ink treatment step of the present deinking treatment step. Deinking method.
物が混入している、トナー印刷された古紙の脱墨に際
し、このトナー印刷された古紙の離解工程、混練・分散
もしくはインキ剥離工程、浮遊選別工程、洗浄工程から
なる脱墨処理工程において、無機填料および／または無
機顔料の含有量の多い古紙を上記のトナー印刷された古
紙と同時に処理することを特徴とする、古紙の脱墨方
法。3. A de-inking process, a kneading / dispersing or ink-separating process, and a flotation sorting process of used toner-printed waste paper when detoning waste toner-printed waste paper which is made of or contains a toner print. A deinking method for waste paper, characterized in that in the deinking treatment step comprising a washing step, waste paper containing a large amount of inorganic filler and / or inorganic pigment is treated simultaneously with the above-mentioned toner-printed waste paper.
が、本脱墨処理に供する全古紙の絶乾量に対して１２．
０重量％以上になるように、無機填料および／または無
機顔料の含有量の多い古紙をトナー印刷された古紙に混
合し、同時に処理することを特徴とする、請求項３に記
載の古紙の脱墨方法。4. The ratio of the inorganic filler and / or the inorganic pigment is based on the absolute dry weight of all the used paper subjected to the present deinking treatment.
The waste paper removal according to claim 3, wherein waste paper containing a large amount of an inorganic filler and / or an inorganic pigment is mixed with waste toner-printed waste paper so as to be 0% by weight or more, and simultaneously processed. Ink method.
の多い古紙が、印刷或いは未印刷の塗工紙古紙であるこ
とを特徴とする、請求項３または４に記載の古紙の脱墨
方法。5. The method for deinking waste paper according to claim 3, wherein the waste paper having a high content of inorganic filler and / or inorganic pigment is a printed or unprinted coated waste paper. .
ルシウム、クレー、タルク、合成シリカ、珪酸塩のうち
の少なくとも一種類以上であることを特徴とする、請求
項３〜５のいずれか１項に記載の古紙の脱墨方法。6. The method according to claim 3, wherein the inorganic filler and / or the inorganic pigment is at least one of calcium carbonate, clay, talc, synthetic silica and silicate. Method for deinking waste paper described in 1.
物が混入している、トナー印刷された古紙、および無機
填料および／または無機顔料の多い古紙が下記のいずれ
かで処理されることを特徴とする、請求項３〜６のいず
れか１項に記載の古紙の脱墨方法。 （１）トナー印刷物よりなるか或いはトナー印刷物が混
入している、トナー印刷された古紙、および無機填料お
よび／または無機顔料の多い古紙を混合し、同時に離解
処理した後、混練・分散もしくはインキ剥離工程に供す
る （２）トナー印刷物よりなるか或いはトナー印刷物が混
入している、トナー印刷された古紙、および無機填料お
よび／または無機顔料の多い古紙をそれぞれ別々に離解
処理し、その後混合した後、混練・分散もしくはインキ
剥離工程に供する （３）トナー印刷物からなるか或いはトナー印刷物が混
入している、トナー印刷された古紙、および無機填料お
よび／または無機顔料の多い古紙を混合し、同時に離解
処理した後、無機填料および／または無機顔料を添加
し、その後混練・分散もしくはインキ剥離工程に供する （４）トナー印刷物からなるか或いはトナー印刷物が混
入している、トナー印刷された古紙、および無機填料お
よび／または無機顔料の多い古紙をそれぞれ別々に離解
処理した後混合し、更に無機填料および／または無機顔
料を添加した後、混練・分散もしくはインキ剥離工程に
供する7. A waste paper printed with toner or containing a toner print, and containing a large amount of inorganic fillers and / or inorganic pigments, is treated with one of the following: The method for deinking waste paper according to any one of claims 3 to 6. (1) Toner-printed waste paper containing toner-printed material or mixed with toner-printed material, and waste paper containing a large amount of inorganic filler and / or inorganic pigment are mixed and simultaneously disintegrated, and then kneaded / dispersed or separated from the ink. Provided to the process (2) Toner-printed waste paper and waste paper containing a large amount of inorganic fillers and / or inorganic pigments, each of which consists of a toner print or is mixed with a toner print, are separately disintegrated and then mixed, Provide for the kneading / dispersion or ink peeling process. (3) Mix toner-printed waste paper and waste paper containing a large amount of inorganic filler and / or inorganic pigment, which are composed of toner-printed material or mixed with toner-printed material, and simultaneously disintegrate After that, an inorganic filler and / or an inorganic pigment is added, and then the mixture is subjected to a kneading / dispersing or ink removing step. (4) Toner-printed waste paper and waste paper containing an inorganic filler and / or an inorganic pigment, which are made of or mixed with a toner print, are separately disaggregated, mixed, and further mixed with the inorganic filler and / or Or, after adding the inorganic pigment, subject it to the kneading / dispersing or ink peeling step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6771199A JP4255159B2 (en) | 1999-03-15 | 1999-03-15 | How to deink waste paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6771199A JP4255159B2 (en) | 1999-03-15 | 1999-03-15 | How to deink waste paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000265383A true JP2000265383A (en) | 2000-09-26 |
| JP4255159B2 JP4255159B2 (en) | 2009-04-15 |
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ID=13352826
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6771199A Expired - Fee Related JP4255159B2 (en) | 1999-03-15 | 1999-03-15 | How to deink waste paper |
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| Country | Link |
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| JP (1) | JP4255159B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7862685B2 (en) | 2006-01-09 | 2011-01-04 | Kemira Chemicals, Inc. | Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles |
| US8133350B2 (en) | 2008-07-09 | 2012-03-13 | Nalco Company | Deinking a cellulosic substrate using magnesium silicate |
| US8287690B2 (en) | 2006-01-09 | 2012-10-16 | Kemira Chemicals, Inc. | Modified inorganic particles for deinking |
| CN107604724A (en) * | 2017-11-01 | 2018-01-19 | 东莞市泰昌纸业有限公司 | The method for reclaiming paper mill sludge production brown paper |
-
1999
- 1999-03-15 JP JP6771199A patent/JP4255159B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7862685B2 (en) | 2006-01-09 | 2011-01-04 | Kemira Chemicals, Inc. | Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles |
| US8287690B2 (en) | 2006-01-09 | 2012-10-16 | Kemira Chemicals, Inc. | Modified inorganic particles for deinking |
| US8133350B2 (en) | 2008-07-09 | 2012-03-13 | Nalco Company | Deinking a cellulosic substrate using magnesium silicate |
| CN107604724A (en) * | 2017-11-01 | 2018-01-19 | 东莞市泰昌纸业有限公司 | The method for reclaiming paper mill sludge production brown paper |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4255159B2 (en) | 2009-04-15 |
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