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JP2005264343A - Method for producing waste paper pulp, waste paper pulp and regenerated paper - Google Patents

Method for producing waste paper pulp, waste paper pulp and regenerated paper Download PDF

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JP2005264343A
JP2005264343A JP2004073923A JP2004073923A JP2005264343A JP 2005264343 A JP2005264343 A JP 2005264343A JP 2004073923 A JP2004073923 A JP 2004073923A JP 2004073923 A JP2004073923 A JP 2004073923A JP 2005264343 A JP2005264343 A JP 2005264343A
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pulp
waste paper
paper pulp
producing
paper
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Shingo Maeda
真吾 前田
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Daio Paper Corp
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Daio Paper Corp
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing waste paper pulp, simplifying its production and decreasing its production cost, also waste paper pulp and regenerated paper. <P>SOLUTION: This method for producing the waste paper pulp is provided by mixing floss formed in the production process of the waste paper pulp into disintegrated pulp obtained by disintegrating the waste paper at a prescribed ratio. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、古紙パルプの製造方法、古紙パルプ及び再生紙に関するものである。特に、白色度の調節が必要とされる場合に関するものである。   The present invention relates to a method for producing waste paper pulp, waste paper pulp, and recycled paper. In particular, it relates to the case where whiteness adjustment is required.

この種の古紙パルプは、一般に、特定の白色度のパルプ数種を適宜配合し、更に染料を添加することによって、製造している（例えば、着色紙に関する特許文献１参照。）。   In general, this type of waste paper pulp is produced by appropriately blending several kinds of pulp having a specific whiteness and further adding a dye (for example, see Patent Document 1 relating to colored paper).

しかしながら、特定の白色度のパルプ数種を用意しておき配合するのは煩瑣であり、また、施設が大規模化するとの問題がある。さらに、製造が煩瑣であることや、染料が必要なことを原因として、製造コストが高くなるとの問題もある。もちろん、染料の多用は、環境にとって好ましいものではない。
特開２００１−２８１２４１号公報 However, it is cumbersome to prepare and mix several kinds of pulp having a specific whiteness, and there is a problem that the scale of the facility is increased. Furthermore, there is a problem that the production cost is increased due to the troublesome production and the necessity of the dye. Of course, heavy use of dyes is not desirable for the environment.
JP 2001-281241 A

本発明の主たる課題は、製造が簡易化され、製造コストが下げられた古紙パルプの製造方法、古紙パルプ及び再生紙とすることにある。   The main object of the present invention is to provide a waste paper pulp manufacturing method, waste paper pulp, and recycled paper with simplified production and reduced production costs.

前記課題を解決した本発明は、次のとおりである。
〔請求項１記載の発明〕
古紙を離解して得た離解パルプから古紙パルプを製造する方法であって、
古紙パルプの製造過程で発生したフロスを、前記離解パルプに所定の割合で混入する、ことを特徴とする古紙パルプの製造方法。 The present invention that has solved the above problems is as follows.
[Invention of Claim 1]
A method for producing waste paper pulp from a disaggregated pulp obtained by disaggregating waste paper,
A method for producing waste paper pulp, characterized in that froth generated in the process of producing waste paper pulp is mixed into the disaggregated pulp at a predetermined ratio.

〔請求項２記載の発明〕
古紙を離解して得た離解パルプの他、古紙パルプの製造過程で発生したフロスを原料とする、ことを特徴とする古紙パルプ。 [Invention of Claim 2]
Waste paper pulp characterized in that, in addition to the disaggregated pulp obtained by disaggregating the waste paper, the raw material is floss generated in the process of producing the waste paper pulp.

〔請求項３記載の発明〕
請求項２記載の古紙パルプを原料とする、ことを特徴とする再生紙。 [Invention of Claim 3]
Recycled paper, characterized by using the waste paper pulp of claim 2 as a raw material.

本発明によると、製造が簡易化され、製造コストが下げられた古紙パルプの製造方法、古紙パルプ及び再生紙となる。   According to the present invention, a waste paper pulp manufacturing method, waste paper pulp, and recycled paper with simplified manufacturing and reduced manufacturing costs are obtained.

以下、図１を参照しながら、本発明の実施の形態を説明する。
〔古紙〕
本発明において使用することができる古紙は、その種類が特に限定されない。例えば、新聞紙等の古紙のほか、塗工紙、非塗工紙、カラー印刷された紙、白黒印刷された紙など種々の紙を含む雑誌古紙やチラシ古紙などをも使用することができる。 Hereinafter, an embodiment of the present invention will be described with reference to FIG.
〔used paper〕
The type of the used paper that can be used in the present invention is not particularly limited. For example, in addition to waste paper such as newspaper, magazine waste paper and flyer waste paper including various papers such as coated paper, non-coated paper, color printed paper, and black and white printed paper can be used.

〔離解処理〕
本実施の形態における古紙パルプの製造方法においては、まず、古紙を離解装置１０で離解して離解パルプを得る。この離解に使用することができる装置１０は、特に限定されず、例えば、ハイドラパルパー、ローターパルパー、横型パルパー等の低濃度パルパーや、縦型バッチ式パルパー、ドラム型連続式パルパー等の高濃度パルパー等のパルパーや、セパレーター、ニーダー等の公知の装置を使用することができる。また、離解の際の温度などの条件は、特に限定されず、適宜界面活性剤等の薬品を添加することもできる。 [Disaggregation processing]
In the method for producing used paper pulp in the present embodiment, first, the used paper is disaggregated by the disaggregation apparatus 10 to obtain disaggregated pulp. The apparatus 10 that can be used for the disaggregation is not particularly limited. For example, a low-concentration pulper such as a hydra pulper, a rotor pulper, or a horizontal pulper, or a high-concentration pulper such as a vertical batch pulper or a drum-type continuous pulper. And other known devices such as separators and kneaders can be used. Moreover, conditions, such as temperature in the case of disaggregation, are not specifically limited, Chemicals, such as surfactant, can also be added suitably.

〔粗選工程〕
離解して得た離解パルプは、粗選手段２０に送って、その中に含まれるラミネート粕や雑誌の背糊などとして使用されているホットメルトなどの比較的な大きな異物を除去しておくのが好ましい。ラミネート粕などの異物除去により、抄紙工程における抄紙網の目詰まりや、異物のロールへの付着などが防止される。粗選手段２０は、その種類が特に限定されず、例えば、ホールスクリーン等の目穴を有する粗選手段や、スリットスクリーン等のスリットを有する粗選手段、クリーナー等の粗選手段を使用することができる。これらの粗選は、２段、３段、４段又はそれ以上の複数段とすることもできる。 [Coarse selection process]
The disaggregated pulp obtained by disaggregation is sent to the coarse selection means 20 to remove comparatively large foreign matters such as hot melts used as laminating straws and magazine back glue contained therein. Is preferred. Removal of foreign matter such as laminating flaws prevents clogging of the papermaking net in the papermaking process and adhesion of foreign matter to the roll. The type of the coarse selection means 20 is not particularly limited. For example, a rough selection means having a hole such as a hole screen, a rough selection means having a slit such as a slit screen, or a rough selection means such as a cleaner is used. Can do. These rough selections can be made into two, three, four, or more stages.

〔脱墨処理等〕
粗選処理した離解パルプは、適宜漂白処理、洗浄処理、脱墨処理などを行うことができ、本発明は、これらの処理などにおいて発生した、つまり古紙パルプの製造過程で発生した繊維分を含むフロスを利用するものである。本実施の形態では、その一例として、パルパー、フローテータ、ニーダー、ディスパーザー等の公知の装置からなる脱墨装置３０で発生したフロスを利用する形態を説明する。 [Deinking treatment, etc.]
Roughly-pulverized disaggregated pulp can be appropriately subjected to bleaching treatment, washing treatment, deinking treatment, and the like, and the present invention includes fibers generated in these treatments, that is, in the process of producing waste paper pulp. It uses floss. In the present embodiment, as an example, an embodiment using a floss generated in a deinking device 30 including a known device such as a pulper, a floater, a kneader, or a disperser will be described.

〔フロスの混入工程〕
脱墨装置３０で発生したフロスは、一端フロスタンク４０に貯留するなどした後、原料チェスト５１に送り、古紙を離解して得た離解パルプに所定の割合で混入する。フロスは、脱墨処理等を行った後の離解パルプよりも、低白色度なので、このフロスの混入により、得られる古紙パルプの白色度を調節することができる。 [Floss mixing process]
The floss generated in the deinking device 30 is stored in the floss tank 40 at one end, and then sent to the raw material chest 51 and mixed at a predetermined ratio with the disaggregated pulp obtained by disaggregating the waste paper. Since the floss has a lower whiteness than the disaggregated pulp after the deinking treatment or the like, the whiteness of the obtained waste paper pulp can be adjusted by mixing this floss.

以上のように、古紙を離解して得た離解パルプに古紙パルプの製造過程で発生したフロスを混入すると、特定の白色度のパルプ数種を用意しておき配合する必要がなくなり、又は用意するパルプの種類を少なくすることができるので、古紙パルプの製造方法が簡易化される。また、古紙パルプの製造に際して使用する染料の量を減らすことができ、又は添加しないことができるので、製造コストが下がる。さらに、古紙パルプの製造過程で発生したフロスを利用するので、フロスの有効利用となり、フロス処理のための費用等が削減されるばかりでなく、環境にとっても好ましいものとなる。   As described above, when froth generated in the process of producing used paper pulp is mixed into the denatured pulp obtained by breaking up used paper, it is not necessary or prepared to prepare several kinds of pulp with specific whiteness. Since the types of pulp can be reduced, the method for producing waste paper pulp is simplified. In addition, since the amount of dye used in the production of used paper pulp can be reduced or not added, the production cost is reduced. Furthermore, since the floss generated in the process of manufacturing waste paper pulp is used, the floss is effectively used, and not only the cost for flossing is reduced but also the environment is preferable.

フロスの混入量（所定の量）は、離解パルプの白色度やパルプ濃度、フロスの白色度やパルプ濃度などをファクターとして、流量計及びバルブなどからなる流量制御手段８１を調節し、適宜設定することができる。本発明者らは、実験を行ったことにより、白色度７０％、パルプ濃度３質量％の離解パルプ１００ｋｇに対して、白色度５６％、パルプ濃度１．５質量％のフロスを１０ｋｇ混入すると白色度６８．５％の古紙パルプが得られ、２０ｋｇ混入すると白色度６６．５％の古紙パルプが得られ、３０ｋｇ混入すると白色度６３．５％の古紙パルプが得られた、というように、白色度を適宜調節することができることがわかった。なお、白色度は、ＪＩＳ Ｐ ８１２３のハンター白色度計での測定による。   The amount of floss mixed (predetermined amount) is appropriately set by adjusting the flow rate control means 81 including a flow meter and a valve with factors such as the whiteness and pulp concentration of disintegrated pulp and the whiteness and pulp concentration of floss. be able to. As a result of experiments, the present inventors have found that when 10 kg of floss having a whiteness of 56% and a pulp concentration of 1.5% by mass are mixed with 100 kg of disaggregated pulp having a whiteness of 70% and a pulp concentration of 3% by mass, A waste paper pulp with a degree of whiteness of 66.5% was obtained when mixed with 20 kg, and a waste paper pulp with a whiteness of 63.5% was obtained when mixed with 30 kg. It was found that the degree can be adjusted appropriately. The whiteness is measured by a hunter whiteness meter of JIS P 8123.

一方、フロス混入の対象となる古紙を離解して得た離解パルプは、その種類、製造方法が特に限定されるものではない。例えば、脱墨装置３０からの離解パルプの全部又は本実施の形態のように一部を対象とすることや、他の古紙パルプ製造過程の離解パルプを対象とすることなどができる。なお、本実施の形態においては、脱墨装置３０からの離解パルプの残部を、他の原料チェスト５２等に送り、高白色度古紙パルプを得るための原料としている。   On the other hand, the kind and the manufacturing method of the disaggregated pulp obtained by disaggregating waste paper to be mixed with floss are not particularly limited. For example, all of the disaggregated pulp from the deinking device 30 or a part thereof as in the present embodiment can be targeted, or the disaggregated pulp in other used paper pulp manufacturing processes can be targeted. In the present embodiment, the remaining portion of the disaggregated pulp from the deinking device 30 is sent to another raw material chest 52 or the like as a raw material for obtaining high whiteness waste paper pulp.

〔後処理等〕
フロスを混入した後の離解パルプは、ポンプＰによって、配合チェスト６０に流送し、適宜の種類、白色度のパルプと配合することができる。この配合は、流送の際の離解パルプの白色度を、オンライン白色度計８２等で測定し、この白色度をファクターとして、決定することができる。 [Post-processing, etc.]
The disaggregated pulp after the floss is mixed can be fed to the blending chest 60 by the pump P and blended with pulp of an appropriate type and whiteness. This blending can be determined by measuring the whiteness of the disintegrated pulp at the time of flowing with an on-line whiteness meter 82 or the like and using this whiteness as a factor.

他のパルプと配合した離解パルプは、更にポンプＰによって、種箱７０に流送し、適宜染料を添加するなどして白色度を調節する。もちろん、フロスの配合状況により、この染料添加を省略することもできる。   The disaggregated pulp blended with other pulp is further fed to the seed box 70 by the pump P, and the whiteness is adjusted by appropriately adding a dye. Of course, the addition of the dye may be omitted depending on the floss composition.

〔再生紙の製造〕
以上のようにして得た古紙パルプは、単独であるいは他のパルプと混合するなどして、適宜抄紙するなどし、再生紙とすることができる。古紙パルプから再生紙を製造するための方法は、特に、限定されず、公知の方法によることができる。 [Manufacture of recycled paper]
The recycled paper pulp obtained as described above can be made into recycled paper by making paper as appropriate, for example, alone or mixed with other pulp. The method for producing recycled paper from waste paper pulp is not particularly limited, and may be a known method.

〔その他〕
（１）本発明の古紙パルプの製造方法においては、以上の工程以外にも、適宜公知の工程を設けることができる。 [Others]
(1) In the method for producing waste paper pulp of the present invention, known processes can be appropriately provided in addition to the above processes.

（２）白色度の調節が必要とされる古紙パルプとは、例えば、着色紙や、更紙、印刷用紙、出版用紙、包装紙等の特定の白色度であることが要求される紙の原料パルプである。 (2) Waste paper pulp that needs to be adjusted in whiteness is, for example, a raw material for paper that is required to have a specific whiteness, such as colored paper, additional paper, printing paper, publishing paper, and wrapping paper. Pulp.

古紙パルプ製造工程のフロー図である。It is a flowchart of a used paper pulp manufacturing process.

符号の説明Explanation of symbols

１０…離解装置、２０…粗選装置、３０…脱墨装置、４０…フロスタンク、５１，５２…原料チェスト、６０…配合チェスト、７０…種箱、Ｐ…ポンプ。   DESCRIPTION OF SYMBOLS 10 ... Disaggregation apparatus, 20 ... Rough selection apparatus, 30 ... Deinking apparatus, 40 ... Floss tank, 51, 52 ... Raw material chest, 60 ... Compounding chest, 70 ... Seed box, P ... Pump.

Claims (3)

古紙を離解して得た離解パルプから古紙パルプを製造する方法であって、
古紙パルプの製造過程で発生したフロスを、前記離解パルプに所定の割合で混入する、ことを特徴とする古紙パルプの製造方法。 A method for producing waste paper pulp from a disaggregated pulp obtained by disaggregating waste paper,
A method for producing waste paper pulp, characterized in that froth generated in the process of producing waste paper pulp is mixed into the disaggregated pulp at a predetermined ratio. 古紙を離解して得た離解パルプの他、古紙パルプの製造過程で発生したフロスを原料とする、ことを特徴とする古紙パルプ。   Waste paper pulp characterized in that, in addition to the disaggregated pulp obtained by disaggregating the waste paper, the raw material is floss generated in the process of producing the waste paper pulp. 請求項２記載の古紙パルプを原料とする、ことを特徴とする再生紙。   Recycled paper, wherein the recycled paper pulp according to claim 2 is used as a raw material.
JP2004073923A 2004-03-16 2004-03-16 Method for producing waste paper pulp, waste paper pulp and regenerated paper Pending JP2005264343A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018502231A (en) * 2015-01-20 2018-01-25 クラウス, ロマンKRAUSE, Roman Plant layout and deinking method
JP2018071020A (en) * 2016-10-28 2018-05-10 日本製紙株式会社 Paper containing deinking froth-derived pulp fiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018502231A (en) * 2015-01-20 2018-01-25 クラウス, ロマンKRAUSE, Roman Plant layout and deinking method
JP2018071020A (en) * 2016-10-28 2018-05-10 日本製紙株式会社 Paper containing deinking froth-derived pulp fiber

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