JPH01260084A - Deinking method for waste of printed coated paper - Google Patents
Deinking method for waste of printed coated paperInfo
- Publication number
- JPH01260084A JPH01260084A JP63077993A JP7799388A JPH01260084A JP H01260084 A JPH01260084 A JP H01260084A JP 63077993 A JP63077993 A JP 63077993A JP 7799388 A JP7799388 A JP 7799388A JP H01260084 A JPH01260084 A JP H01260084A
- Authority
- JP
- Japan
- Prior art keywords
- soaking
- flotation
- paper
- raw material
- deinking
- 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
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000002761 deinking Substances 0.000 title claims abstract description 17
- 239000002699 waste material Substances 0.000 title abstract description 5
- 238000002791 soaking Methods 0.000 claims abstract description 31
- 238000005188 flotation Methods 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 239000010893 paper waste Substances 0.000 claims abstract description 17
- 238000004898 kneading Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000000126 substance Substances 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 7
- 239000004115 Sodium Silicate Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 6
- 229910052911 sodium silicate Inorganic materials 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 5
- 239000003973 paint Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000338702 Cupido minimus Species 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
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
【発明の詳細な説明】
（産業上の利用分野）
本発明はコート印刷故紙を脱墨再生する際に、より効率
良くイゾキ粒子を除去する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for more efficiently removing Izoki particles when deinking and recycling coated printing waste paper.
従来より資源の有効利用の見地から、新聞、雑誌、一般
印刷物等の印刷故紙を脱墨し、利用することが行われて
おシ、各種の脱墨方法が知られている。近年これらの印
刷故紙の中で、コート印刷故紙の増加が著しい。BACKGROUND ART Conventionally, from the viewpoint of effective resource utilization, waste printed paper such as newspapers, magazines, and general printed matter has been deinked and used, and various deinking methods are known. In recent years, among these types of printed waste paper, there has been a remarkable increase in coated printed waste paper.
（従来の技術）
従来故紙の脱墨は、離解・粗選する工程、脱水する工程
、ソーキングする工程、離解しフローテーション又は洗
浄する工程、精選・晒等を行う工程を、この順序で行う
方法が常法であり、いずれにしてもフローテーションは
ソーキングによりインキを繊維から剥離した後、浮上し
てきたインキをフロスとして系外に排出するものであっ
た。(Prior art) Conventionally, waste paper is deinked by performing the following steps in this order: disintegration and rough selection, dehydration, soaking, disintegration and flotation or washing, and selection and bleaching. is a conventional method, and in any case, flotation involves separating ink from fibers by soaking, and then discharging the floating ink from the system as floss.
（発明が解決しようとする問題点）
しかしながらコート印刷故紙を従来の方法で脱墨すると
１）フローテーション時のインキ粒子が微細化している
ために、フローテーションの効率が低下する。(Problems to be Solved by the Invention) However, when coated printed waste paper is deinked by the conventional method, 1) the ink particles during flotation become finer, so the flotation efficiency decreases;
２）インキ粒子の繊維表面への再付着が起り、繊維のく
すみが増える。2) Redeposition of ink particles to the fiber surface occurs, increasing dullness of the fiber.
３）ソーキングに使用する脱墨剤、ＮａＯＨ等の量が多
いため、排水のＣＯＤ負荷が高い。3) Because the amount of deinking agent, NaOH, etc. used in soaking is large, the COD load of the wastewater is high.
等の問題がある。There are other problems.
本発明は上記したような問題を解消させ、従来よりも白
色度が高く、かつインキスペックの少ない脱墨バルブを
提供することを目的とする。It is an object of the present invention to solve the above-mentioned problems and to provide a deinking valve that has higher whiteness and smaller ink specs than conventional ones.
（問題点を解決するための手段）
すなわち本発明はコート印刷故紙を含有した印刷故紙を
離解し、粗選するＡ工程、離解粗選后の原料をフローテ
ーシヨンするＢ工程、フローテーション后の原料をソー
キングするＣ工程をこの順序で含むことを特徴とする、
コート印刷故紙の脱墨方法に関するものである。(Means for Solving the Problems) That is, the present invention comprises a step A in which printed waste paper containing coated printed waste paper is disintegrated and roughly sorted, a step B in which the raw material after the disintegration and rough sorting is floated, and a step B after flotation is carried out. characterized by including step C of soaking the raw materials in this order,
This paper relates to a method for deinking coated printed waste paper.
本発明はまた、前記離解・粗選工程（人工程）、フロー
テーション工程（Ｂ工程）、ソーキング工程（Ｃ工程）
の後に、更にフローテーション工程を有するコート印刷
故紙の脱墨方法に関するものである。The present invention also provides the above-mentioned defibration/rough selection process (human process), flotation process (B process), and soaking process (C process).
The present invention also relates to a method for deinking coated printed waste paper, which further includes a flotation step.
本発明はまた、前記離解・粗選工程（人工程）、フロー
テーション工程（Ｂ工程）、ソーキング工程（Ｃ工程）
の後に、原料濃度１５ｑｂ（絶乾重量係、以下同じ）以
上の高濃度のまゝニーデイングを行う二−ディング工程
を有する、コート印刷故紙の脱墨方法に関するものであ
る。The present invention also provides the above-mentioned defibration/rough selection process (human process), flotation process (B process), and soaking process (C process).
The present invention relates to a method for deinking coated printed waste paper, which has a subsequent step of kneading at a high raw material concentration of 15 qb (absolute dry weight) or higher (the same applies hereinafter).
更にま九本発明は前記離解・粗選工程（人工程）、フロ
ーテーション工程（Ｂ工程）、ソーキング工程（Ｃ工程
）の後に原料濃度１５％以上の高濃度のまゝニーデイン
グを行う二−ディング工程と、その後にフローテーシヨ
ン工程を有するコート印刷故紙の脱墨方法に関するもの
である。Furthermore, the present invention provides a second process in which kneading is performed while maintaining the raw material concentration at a high concentration of 15% or more after the disintegration/rough selection process (manual process), flotation process (B process), and soaking process (C process). The present invention relates to a method for deinking coated printed waste paper, which has a process followed by a flotation process.
本発明は上記したように、従来常識であったソーキング
后のフローテーシヨンを、ソーキング前に行うことに特
徴があシ、この方法は印刷されたコート紙の脱墨にこそ
有効なものである。As mentioned above, the present invention is characterized by performing floatation after soaking, which was conventionally common knowledge, before soaking, and this method is effective only for deinking printed coated paper. .
コート紙は通常基材である紙の上に、顔料とバインダー
を主成分とする塗料を塗布乾燥したものであシ、コート
紙に印刷されたインキは基材である紙の繊維に付着する
よシも、コート層に固着している割合が多い。従ってこ
のようなコート紙を離解した場合、インキ粒子は微細化
せずに塗料に付着して、比較的大きな粒子のままで存在
するものが多い。Coated paper is usually made by coating a base paper with a paint containing pigments and a binder and drying it.The ink printed on coated paper adheres to the fibers of the base paper. There is also a large proportion of silica that is fixed to the coating layer. Therefore, when such coated paper is disintegrated, the ink particles often adhere to the paint without becoming fine and remain relatively large particles.
常法によると、この原料をソーキングするが、ソーキン
グは苛性ソーダ、ケイ酸ソーダ、界面活性剤等の脱墨薬
品の存在下で行われ、繊維表面や塗料からインキを剥離
すると同時にインキを微細化する。こうして微細化され
九インキをフローテーション処理している。According to the conventional method, this raw material is soaked, but soaking is performed in the presence of deinking chemicals such as caustic soda, sodium silicate, and surfactants, which strips the ink from the fiber surface and paint and at the same time makes the ink fine. . In this way, the finely divided ink is subjected to flotation treatment.
本発明者らは常法とは全く異なり、離解によって剥離し
た比較的大きいインキ粒子ｆｔまづフローテーションで
取シ除くと後段の脱墨負荷を著しく軽減出来ると共に、
インキ粒子をよシ効率的に除去出来ることをみいだして
本発明を行ったものである。The present inventors have discovered that, in a completely different way from the conventional method, by first removing relatively large ink particles peeled off by flotation by flotation, it is possible to significantly reduce the deinking load in the subsequent stage.
The present invention was developed based on the discovery that ink particles can be removed more efficiently.
本発明は離解、フローテーション、ソーキングをこの順
序で行えば足り、この他に常法で用いられる各種の操作
たとえばソーキング前の脱水、高濃度でのソーキング、
ソーキング后の高濃度でのニーディング、洗滌、晒等を
行うことはもちろんさしつかえなく、更に残存する未剥
離のインキを後段のソーキングによって完全に繊維から
剥離し、もう−度フローテーションを行うことももちろ
ん有効である。In the present invention, it is sufficient to perform disintegration, flotation, and soaking in this order, and in addition, various operations used in conventional methods such as dehydration before soaking, soaking at a high concentration,
After soaking, it is of course possible to perform high-concentration kneading, washing, bleaching, etc., and it is also possible to completely remove the remaining unremoved ink from the fibers by subsequent soaking, and then perform flotation again. Of course it is valid.
本発明において人工程の離解け、濃度の限定は表い。一
般的には１０％以下の濃度、好ましくは５ｑｂ程度で行
われることが多いが、１０％をこえた濃度で行うことも
可能である。離解時には薬品の添加は必須の要件ではな
い。しかしながら要求される品質により、通常知られた
薬品を加えることはもちろん可能である。In the present invention, there are no limitations on the disintegration and concentration of the human process. Generally, it is often carried out at a concentration of 10% or less, preferably about 5 qb, but it is also possible to carry out at a concentration exceeding 10%. Addition of chemicals is not an essential requirement during disintegration. However, depending on the quality required, it is of course possible to add commonly known chemicals.
本発明においてＢ工程のフローテーションは、粗選后の
原料を高速離解機で処理した后、希釈して通常知られ九
条件で行う。好ましい濃度は約１係である。処理時間は
要求される品質により異なるが１０〜６０分である。In the present invention, the flotation in step B is carried out under nine commonly known conditions by treating the roughly selected raw material with a high-speed disintegrator and then diluting it. The preferred concentration is about 1 part. The processing time varies depending on the quality required, but is 10 to 60 minutes.
本発明におけるＣ工程のソーキングは、原料Ｑ度１５％
以上で１時間以上行うが、２０時間以上の長時間処理を
行うのが好ましい。この工程における薬品添加は、通常
知られた薬品の種類、添加量他の条件がすべて使用可能
であるが、例示すると濃度２５％の原料にＮａＯＨ２重
量係、４０ Ｂｅ’硅酸ソーダ２．６重量％’に添加し
、７０℃で２４時間ソーキングする。場合によっては硅
酸ソーダを加えないこともある。The soaking in step C in the present invention has a raw material Q degree of 15%.
Although the above treatment is carried out for one hour or more, it is preferable to carry out a long-time treatment of 20 hours or more. For the addition of chemicals in this process, all the commonly known types of chemicals, amounts added, and other conditions can be used, but for example, NaOH 2 parts by weight, 40 Be'sodium silicate 2.6 parts by weight, and 25% concentration raw materials. %' and soak for 24 hours at 70°C. In some cases, sodium silicate may not be added.
本発明においては必要により、Ｃ工程のあとに二−ディ
ング工程を設けても良い。その場合、原料濃度１５係以
上で行うことが望ましい。In the present invention, a seconding step may be provided after the C step if necessary. In that case, it is desirable to carry out at a raw material concentration of 15 parts or higher.
更にまた本発明は必要に応じ、Ｃ工程のあとにもう一度
フローテーション工程を設けても良い。その場合の条件
は、Ｂ工程の条件と同一でも良いし、異なっても良い。Furthermore, in the present invention, another flotation step may be provided after step C, if necessary. The conditions in that case may be the same as or different from those of the B step.
（実施例） 以下本発明を実施例によシ説明する。(Example) The present invention will be explained below using examples.
実施例１
コート印刷故紙１００％の故紙をパルパーに仕込み、原
料濃度５係で離解した。離解原料を１％に希釈し、フロ
ーテーションにかけた。フローテーションは５分間行つ
九。Example 1 100% coated printed waste paper was charged into a pulper and disintegrated at a raw material concentration of 5 parts. The disintegrated raw material was diluted to 1% and subjected to flotation. Floatation should be done for 5 minutes.9.
続いて原料濃度２５％に脱水し、絶乾原料当りＮａＯＨ
２％、４０ Ｂｅ’硅酸ソーダ１．９４ ｔ−添加して
濃度２０係で７０℃、２４時間ソーキングを行った。Subsequently, the raw material concentration was dehydrated to 25%, and NaOH was added per bone dry raw material.
1.94 t of 2%, 40 Be'sodium silicate was added and soaked at 70° C. for 24 hours at a concentration of 20%.
ソーキングを行つ几原料を再び４％に希釈し、フローテ
ーションを行い、１２％に脱水した。The raw material to be soaked was diluted again to 4%, subjected to flotation, and dehydrated to 12%.
この原料を１００９／ｒｒ？に手抄きを行い、インキ捕
集性、色差、紙の白色度、を以下の方法で測定した。1009/rr for this raw material? The paper was made by hand, and the ink collection ability, color difference, and whiteness of the paper were measured using the following methods.
インキ捕集性：画像解析装置によるインキの（スペック
インデックス）
面積１！を測定した。Ink collection ability: Ink (spec index) area according to image analysis device 1! was measured.
（Ｃ■粒度分布測定装置） 色差： 村上色差計（■３００）で測定した。(C ■ Particle size distribution measuring device) Color difference: Measured with a Murakami color difference meter (■300).
紙の白色度：ホトボルト白色度針で測定した。Paper whiteness: Measured with a photovolt whiteness needle.
実施例２
実施例１のソーキング薬品をＮａＯＨ１％のみとした以
外は実施（Ｈ’ｖｆ’同じテストを行った。Example 2 The same test as in Example 1 was carried out except that the soaking chemical was changed to 1% NaOH (H'vf').
実施例３
ソーキング后のフローテーションを行わず、ソーキング
后の原料を１％に希釈し、１２％に脱水した以外は実施
例１と同様のテストを行った。Example 3 A test similar to Example 1 was conducted except that flotation was not performed after soaking, and the raw material after soaking was diluted to 1% and dehydrated to 12%.
比較例１
ソーキング后のフローテーシヨンを行わないこと以外は
実施例１と同様にしてテストを行った。Comparative Example 1 A test was conducted in the same manner as in Example 1 except that floatation after soaking was not performed.
以上の結果を第−表に示す。The above results are shown in Table 1.
第−表
（発明の効果）
以上の結果から明らかな通り、本発明の方法は従来法と
比較して
１）インキ粒子が微細化しないうちにフローテーシヨン
を行うため、インキの捕集性が良＾。Table 1 (Effects of the Invention) As is clear from the above results, the method of the present invention is superior to the conventional method in that: 1) Since flotation is performed before the ink particles become fine, the ink collection performance is improved; Good ^.
２）製品はインキによる青味が少なく、よシ良質である
。2) The product has little blue tint due to the ink and is of good quality.
３）製品白色度が４ポイント程度向上する。3) Product whiteness improves by about 4 points.
４）ソーキング薬品が同じでも持込む有沓°性汚濁物が
減るため、排水の■Ｄ負負荷約１０％程度減少する。4) Even if the soaking chemicals are the same, the amount of excretory pollutants brought in is reduced, so the ■D negative load on the wastewater is reduced by about 10%.
又、同等の品質のものを得るために必要な薬品も減少す
るので、ＣＯＤ負荷が大巾に減少する。Also, fewer chemicals are required to obtain the same quality, resulting in a significant reduction in COD load.
等の効果があり、脱墨方法としてきわめてすぐれたもの
である。It has the following effects and is an extremely excellent deinking method.
第１図は従来法の主要工程を示す工程図、第２図は本発
明の主要工程を示す工程図である。
第３〜５図は別の態様を示す本発明の工程図である。
特許出願人 本州製紙株式会社
第１図
第２図
第３図
第４図
第５図
手続補正書
昭和６３年 ４月２６日
２、発明の名称
コート印刷故紙の脱墨方法
３、補正をする者
事件との関係 特許出願人
〒 １０４
住所東京都中央区銀座五丁目１２番８号自 発
５、補正の対象
６、補正の内容
（１）明細書第７ページ１４行目及び第８ページ１２行
目のｒ４０Ｂｅ’硅酸ソーダ」を「硅酸ソーダ」と訂正
する。
（２）明細書第９ページ１５行目の
「ソーキング后」を「ソーキング前」と訂正する。
以 上FIG. 1 is a process chart showing the main steps of the conventional method, and FIG. 2 is a process chart showing the main steps of the present invention. 3 to 5 are process diagrams of the present invention showing another embodiment. Patent applicant Honshu Paper Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Procedural amendment April 26, 1988 2. Name of the invention Method for deinking coated printed waste paper 3. Person making the amendment Relationship to the case Patent applicant Address: 5-12-8 Ginza, Chuo-ku, Tokyo 104 Publication number 5 Subject of amendment 6 Contents of amendment (1) Specification, page 7, line 14 and page 8, line 12 Correct r40Be'Sodium Silicate' to 'Sodium Silicate'. (2) "After soaking" on page 9, line 15 of the specification is corrected to "before soaking."that's all
Claims (1)
するＡ工程、離解粗選后の原料をフローテーシヨンする
Ｂ工程、フローテーシヨン后の原料をソーキングするＣ
工程をこの順序で含むことを特徴とするコート印刷故紙
の脱墨方法。 ２）ソーキング工程（Ｃ工程）の後に、更にフローテー
シヨン工程を有する特許請求の範囲第１項に記載の方法
。 ３）ソーキング工程（Ｃ工程）の後に、原料濃度１５％
以上の高濃度のまゝニーデイングを行うニーデイング工
程を有する、特許請求の範囲第１項記載の方法。 ４）ソーキング工程（Ｃ工程）の後に原料濃度１５％以
上の高濃度のまゝニーデイングを行うニーデイング工程
と、更にその後にフローテーシヨン工程を有する、特許
請求の範囲第１項記載の方法。 ５）ソーキング工程（Ｃ工程）は、原料濃度１５％以上
で１時間以上行う、特許請求の範囲 第１項ないし第４項に記載のいずれかの方法。[Scope of Claims] 1) Step A of disintegrating and roughly sorting the printed waste paper containing coated printed waste paper, Step B of floatation of the raw material after disintegration and rough sorting, and Step C of soaking the raw material after flotation.
A method for deinking coated printed waste paper, comprising the steps in this order. 2) The method according to claim 1, further comprising a flotation step after the soaking step (C step). 3) After the soaking process (C process), the raw material concentration is 15%.
The method according to claim 1, comprising a kneading step of performing kneading while maintaining the high concentration. 4) The method according to claim 1, further comprising a kneading step in which kneading is performed at a high raw material concentration of 15% or more after the soaking step (C step), and a flotation step thereafter. 5) The method according to any one of claims 1 to 4, wherein the soaking step (C step) is performed at a raw material concentration of 15% or more for 1 hour or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7799388A JP2645303B2 (en) | 1988-04-01 | 1988-04-01 | Deinking method of coated printing waste paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7799388A JP2645303B2 (en) | 1988-04-01 | 1988-04-01 | Deinking method of coated printing waste paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01260084A true JPH01260084A (en) | 1989-10-17 |
| JP2645303B2 JP2645303B2 (en) | 1997-08-25 |
Family
ID=13649344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7799388A Expired - Lifetime JP2645303B2 (en) | 1988-04-01 | 1988-04-01 | Deinking method of coated printing waste paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2645303B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263384A (en) * | 1992-03-10 | 1993-10-12 | Nippon Paper Ind Co Ltd | Production of regenerated paper excellent in dimensional stability |
| JP2009256808A (en) * | 2008-04-11 | 2009-11-05 | Toppan Printing Co Ltd | Method for recycling waste printed paper |
| WO2018014237A1 (en) * | 2016-07-19 | 2018-01-25 | 乐国强 | Apparatus for pre-processing, sorting, and recycling paper waste |
| CN112703233A (en) * | 2020-08-17 | 2021-04-23 | 福建华峰运动用品科技有限公司 | Recycled fiber coating slurry containing waste cloth, coating and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119803A (en) * | 1974-08-09 | 1976-02-17 | Mitsui Mining & Smelting Co | Horiramineetoshino shoriho |
| JPS60199992A (en) * | 1984-03-23 | 1985-10-09 | 森實 美津夫 | Pretreatment of used paper |
-
1988
- 1988-04-01 JP JP7799388A patent/JP2645303B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119803A (en) * | 1974-08-09 | 1976-02-17 | Mitsui Mining & Smelting Co | Horiramineetoshino shoriho |
| JPS60199992A (en) * | 1984-03-23 | 1985-10-09 | 森實 美津夫 | Pretreatment of used paper |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263384A (en) * | 1992-03-10 | 1993-10-12 | Nippon Paper Ind Co Ltd | Production of regenerated paper excellent in dimensional stability |
| JP2009256808A (en) * | 2008-04-11 | 2009-11-05 | Toppan Printing Co Ltd | Method for recycling waste printed paper |
| WO2018014237A1 (en) * | 2016-07-19 | 2018-01-25 | 乐国强 | Apparatus for pre-processing, sorting, and recycling paper waste |
| CN112703233A (en) * | 2020-08-17 | 2021-04-23 | 福建华峰运动用品科技有限公司 | Recycled fiber coating slurry containing waste cloth, coating and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2645303B2 (en) | 1997-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5401360A (en) | Method for de-inking printed paper | |
| AU669907B2 (en) | Waste paper treatment process | |
| EP2135991B1 (en) | Method of deinking waste printed paper | |
| JPH01260084A (en) | Deinking method for waste of printed coated paper | |
| US5258099A (en) | Office wastepaper deinking process using fatty alcohols | |
| JPH05209383A (en) | Method for pulping pressure-sensitive adhesive waste paper | |
| JP4255159B2 (en) | How to deink waste paper | |
| JP6583005B2 (en) | Manufacturing method and manufacturing system of deinked waste paper pulp | |
| JP2002363879A (en) | Method for producing regenerated pulp | |
| JP4064734B2 (en) | Method for producing recycled pulp | |
| JP6443290B2 (en) | Method for producing deinked waste paper pulp | |
| JP2000034685A (en) | Recycling of resin-containing wastepaper | |
| JPH11200269A (en) | Deinking method of printed waste paper | |
| JPH04272286A (en) | Method for deinking printed waste paper containing waste paper for information | |
| JP4571290B2 (en) | How to deink waste paper | |
| JP3526055B2 (en) | Wastepaper deinking method | |
| JPH048554B2 (en) | ||
| Barbaric-Mikocevic et al. | The deinkability improvement of offset prints made from a two-side coated substrate | |
| JP2842688B2 (en) | Waste paper recycling method | |
| JP2002069877A (en) | Method for producing regenerated pulp | |
| CA2208782A1 (en) | Process and composition for deinking waste paper | |
| JPH0551888A (en) | Treatment of waste paper | |
| JPH0978480A (en) | Production of deinked pulp of high whiteness degree | |
| KR100217303B1 (en) | The production of high brightness recycled pulp | |
| JPH06299489A (en) | Reclamation of waste paper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |