JPH04209880A - Method for pulping waste release paper - Google Patents
Method for pulping waste release paperInfo
- Publication number
- JPH04209880A JPH04209880A JP2296457A JP29645790A JPH04209880A JP H04209880 A JPH04209880 A JP H04209880A JP 2296457 A JP2296457 A JP 2296457A JP 29645790 A JP29645790 A JP 29645790A JP H04209880 A JPH04209880 A JP H04209880A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- pulp
- coating layer
- release paper
- waste
- 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.)
- Pending
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 23
- 238000004537 pulping Methods 0.000 title claims description 5
- 239000011247 coating layer Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims abstract description 22
- 238000005188 flotation Methods 0.000 claims abstract description 11
- 239000000049 pigment Substances 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 11
- 238000010907 mechanical stirring Methods 0.000 claims description 4
- 239000010893 paper waste Substances 0.000 abstract description 20
- 239000004094 surface-active agent Substances 0.000 abstract description 6
- 238000013019 agitation Methods 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000000725 suspension Substances 0.000 description 11
- 239000012535 impurity Substances 0.000 description 9
- 150000003377 silicon compounds Chemical class 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002761 deinking Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 206010001497 Agitation Diseases 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- -1 penetrants Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 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
Landscapes
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、剥離紙古紙の再生パルプ化方法に関し、特に
、顔料塗被層を有する剥離紙の古紙から塗被層やシリコ
ン等の剥離剤層を効率良く分離除去し、良質の再生パル
プを製造する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a method for recycling and pulping waste release paper, and in particular, to extracting a coating layer and a release agent such as silicone from waste paper of release paper having a pigment coating layer. The present invention relates to a method for efficiently separating and removing layers to produce high-quality recycled pulp.
「従来の技術」
現在、我が国の製紙用原料としての古紙の使用量は、紙
・板紙生産原料の５０％近くになっている。しかし、資
源の有効活用の面から、更により多くの古紙を再生利用
する要請が高まっている。"Prior Art" Currently, the amount of waste paper used as a raw material for paper manufacturing in Japan accounts for nearly 50% of the raw material for paper and paperboard production. However, from the standpoint of effective resource utilization, there is an increasing demand for recycling even more waste paper.
再生パルプ化が可能な古紙としては、例えば新聞、段ボ
ール、雑誌、模造、色土（アート紙を含む）、上白、カ
ード、特白、中白、白マニラ、切符、中更反古、茶模造
紙（浮設を含む）、台紙、地券、ボール、感熱紙、感圧
複写紙、ＣＰＯ等があり、これらの古紙は、一般に古紙
を離解してパルプ懸濁液を作る離解工程、パルプ懸濁液
中の異物を分離する粗選・精選工程、印刷インキ等を分
離する脱墨工程、色を白くする漂白工程等を経て再生パ
ルプとされる。Examples of waste paper that can be made into recycled pulp include newspapers, cardboard, magazines, imitations, colored clay (including art paper), white paper, cards, special white, medium white, white manila, tickets, old recycled paper, and brown imitations. There are paper (including floating paper), mounts, ground certificates, balls, thermal paper, pressure-sensitive copying paper, CPO, etc., and these waste papers are generally processed through the disintegration process of disintegrating waste paper to create a pulp suspension, and the pulp suspension process. Recycled pulp is made into recycled pulp after undergoing a rough selection/selection process to separate foreign matter from the turbid liquid, a deinking process to separate printing ink, etc., and a bleaching process to whiten the color.
ところが、ラベル、シート、ワッペン等に加工され商業
用、事務用、家庭用等に幅広く使用されている感圧接着
紙は、一般に紙基材の裏面に接着剤を塗布した表面基材
と、紙基材の表面にシリコン化合物やフッ素化合物等の
剥離剤を塗布した剥離基材とで構成されているが、紙基
材の表面に直接シリコン化合物等の剥離剤を塗被した剥
離紙では、剥離剤と紙基材との結合が強固であり、また
紙基材にプラスチックフィルムをラミネートした後で剥
離層を設けた剥離紙では、プラスチックフィルムの影響
で、いずれもパルプの離解が不充分となるため、再生で
きない古紙として廃棄処分されているのが現状である。However, pressure-sensitive adhesive paper, which is processed into labels, sheets, patches, etc. and used widely for commercial, office, and household purposes, generally has a surface base material with adhesive applied to the back side of the paper base material, and a paper base material with an adhesive applied to the back side. It is composed of a release base material whose surface is coated with a release agent such as a silicon compound or a fluorine compound. The bond between the agent and the paper base material is strong, and with release paper in which a release layer is provided after laminating a plastic film to the paper base material, pulp disintegration is insufficient due to the influence of the plastic film. Therefore, currently it is disposed of as waste paper that cannot be recycled.
「発明が解決しようとする課題」
而して、本発明は剥離紙の古紙から効率良く再生パルプ
を得る方法を提供するものであり、特に剥離剤層を形成
する基材として顔料塗被層を有する紙基材を使用し、そ
の剥離紙古紙から塗被層やシリコン等の剥離剤層を効率
良く分離除去し、抄紙工程でトラブルを発生しない良質
の再生パルプを得ることができる方法を提供するもので
ある。``Problems to be Solved by the Invention'' Therefore, the present invention provides a method for efficiently obtaining recycled pulp from used release paper, and in particular, uses a pigment coating layer as a base material for forming a release agent layer. To provide a method for efficiently separating and removing coating layers and release agent layers such as silicone from waste paper using a paper base material having release paper, and obtaining high-quality recycled pulp that does not cause trouble in the papermaking process. It is something.
「課題を解決するための手段」
本発明は、紙基材の少なくとも片面に顔料及び接着剤を
主成分とする塗被層を設け、且つ該塗被層の少なくとも
片面に剥離剤層を設けた剥離紙の古紙に、（ａ）パルプ
濃度１５％以上、（ｂ）温度３０℃以上の条件下で機械
的攪拌処理を施し、次いでフローテーション処理及び／
又はクリーナー処理を施すことを特徴とする剥離紙古紙
のパルプ化方法である。"Means for Solving the Problems" The present invention provides a paper base material with a coating layer mainly composed of a pigment and an adhesive on at least one side, and a release agent layer on at least one side of the coating layer. Used release paper is subjected to mechanical agitation treatment under conditions of (a) pulp concentration of 15% or more and (b) temperature of 30°C or more, followed by flotation treatment and/or
Alternatively, it is a method for pulping waste paper from release paper, which is characterized by subjecting it to a cleaner treatment.
「作用」
本発明で使用される剥離紙古紙の紙基材は、少なくとも
その片面に、例えばカオリン、炭酸カルシウム、水酸化
アルミニウム、酸化チタン等の顔料と、各種の共重合体
ラテックス、澱粉、カゼイン等の接着剤を主成分とする
塗被層を設けたものであり、例えばコート紙、アート紙
、キャストコート紙、中質コート紙、微塗工紙等の塗被
紙が用いられる。そして、本発明の方法は、この紙基材
塗被層の少なくとも片面にシリコン化合物やフン素化合
物等の剥離剤を塗被加工した剥離紙の古紙に適用される
。"Function" The paper base material of the release paper waste paper used in the present invention has pigments such as kaolin, calcium carbonate, aluminum hydroxide, and titanium oxide, and various copolymer latexes, starches, and casein on at least one side thereof. For example, coated paper such as coated paper, art paper, cast coated paper, medium coated paper, lightly coated paper, etc. is used. The method of the present invention is applied to used release paper in which at least one side of the paper base coating layer is coated with a release agent such as a silicon compound or a fluorine compound.
この剥離紙古紙は、塗被層の存在によっである程度のパ
ルプ離解が可能となるが、単に水性媒体中で低パルプ濃
度（例えば５重量％）下で機械的な攪拌処理を施しても
、塗被層が完全に分離除去できず、得られた再生パルプ
を使用したときに、塗被層上に残存する剥離剤が悪影響
し、抄紙工程において抄紙用具を汚したり、製品中に夾
雑物として入り込んで製品価値を低下させてしまう。This release paper waste paper can be pulped to a certain extent by the presence of the coating layer, but even if it is simply mechanically stirred in an aqueous medium at a low pulp concentration (for example, 5% by weight), When the coated layer cannot be completely separated and removed, and the resulting recycled pulp is used, the release agent remaining on the coated layer has an adverse effect, contaminating the papermaking tools during the papermaking process, and causing contaminants in the product. They get in there and reduce the value of the product.
そのため、本発明者等は剥離紙古紙の塗被層の分離除去
について鋭意研究の結果、塗被層を充分に分離、離解す
るためには、機械的攪拌処理を施す際の剥離紙古紙のパ
ルプ濃度と温度条件が極めて重要であることを見出した
。そして、さらに検討を重ねた結果、上記の如き剥離紙
古紙に、（ａ）パルプ濃度１５％以上、Φ）温度３０℃
以上の条件下で機械的攪拌処理を施すと、塗被層が充分
に破壊され、顔料やシリコン等の離型剤が水に微細分散
されることを見出した。Therefore, as a result of intensive research into the separation and removal of the coating layer of waste release paper, the present inventors found that in order to sufficiently separate and disintegrate the coating layer, the pulp of waste release paper should be We found that concentration and temperature conditions are extremely important. As a result of further investigation, we found that the above-mentioned release paper waste paper has the following properties: (a) pulp concentration of 15% or more, Φ) temperature of 30°C.
It has been found that when the mechanical stirring treatment is performed under the above conditions, the coated layer is sufficiently destroyed and the pigment and mold release agent such as silicone are finely dispersed in the water.
因に、１５％未満のパルプ濃度では、たとえ３０゛Ｃ以
上の温度条件で機械的処理を施しても、塗被層の破壊が
不充分となってしまう。そのため、１５％以上のパルプ
濃度が必要であるが、４０％を越えるような高パルプ濃
度条件下では、機械的な攪拌混合が難しくなるため、２
０〜３５％程度のバルブ濃度に調節するのが最も好まし
い。なお、１５％以上のバルブ濃度で処理しても、３０
℃未満の温度条件下では、やはり塗被層の破壊が不充分
となってしまう。そのため、３０℃以上、好ましくは５
０〜９０℃程度の温度範囲に調節するのが望ましい。Incidentally, if the pulp concentration is less than 15%, even if mechanical treatment is performed at a temperature of 30°C or higher, the coating layer will not be sufficiently destroyed. Therefore, a pulp concentration of 15% or more is required, but under high pulp concentration conditions exceeding 40%, mechanical stirring and mixing becomes difficult.
Most preferably, the bulb concentration is adjusted to about 0 to 35%. In addition, even if treated with a bulb concentration of 15% or more, 30%
Under temperature conditions below .degree. C., the coating layer is still insufficiently destroyed. Therefore, the temperature should be 30°C or higher, preferably 5°C.
It is desirable to adjust the temperature to a range of about 0 to 90°C.
本発明の方法において、このような条件下で剥離紙古紙
に機械的攪拌処理を施す装置としては、例えばヘリカル
ローターを有する高濃度パルパー、ニーダ−、ディスパ
ーザ−、レファイナー等が挙げられる。なお、ニーダ−
、ディスパーザ−、レファイナー等を使用する場合には
、剥離紙古紙を小さく切って、水と共に離解処理しても
よいが、予めドラムタイプの高濃度パルパーや低濃度パ
ルパーでパルプ繊維を離解した後で、上記の如きパルプ
濃度や温度条件を設定して離解処理するのが効率的であ
る。また、機械的攪拌処理を行う瞭に、離解を促進させ
るために、アルカリ薬品、酸性薬品、浸透剤、界面活性
剤、漂白薬品等を添加してもよい。In the method of the present invention, examples of devices for mechanically agitating waste release paper under such conditions include a high-density pulper having a helical rotor, a kneader, a disperser, a refiner, and the like. In addition, the kneader
When using a disperser, refiner, etc., the waste release paper may be cut into small pieces and disintegrated with water. It is efficient to perform the disintegration treatment by setting the pulp concentration and temperature conditions as described above. Furthermore, in order to promote disintegration during mechanical stirring treatment, alkaline chemicals, acidic chemicals, penetrants, surfactants, bleaching chemicals, etc. may be added.
本発明の方法では、上記の如く特定の条件下で剥離紙古
紙に機械的攪拌処理を施し後、得られたパルプ懸濁液に
、フローテーション処理及び／又はクリーナー処理を施
し、パルプ懸濁液中に分散された顔料や剥離剤を効率的
に分離除去するものである。In the method of the present invention, after subjecting release paper waste paper to a mechanical agitation treatment under specific conditions as described above, the obtained pulp suspension is subjected to a flotation treatment and/or a cleaner treatment, and the pulp suspension is The pigment and release agent dispersed therein are efficiently separated and removed.
なお、本発明の方法で使用される剥離紙古紙は、顔料塗
被層を有しているために印刷効果に優れている。従って
、印刷を施した状態で古紙として処理される場合が多い
。そのような古紙の場合には、脱墨剤を添加してフロー
テーション処理を行い、印刷インキを取り除いたり、フ
ローテーション処理とクリーナー処理を組み合わせて脱
墨効果を高めるのが好ましい。また、プラスチック類や
接着剤等の異物が混入している場合には、スクリーン処
理や軽量異物除去用のクリーナー等を使用してこれらの
異物を除去すればよい。Note that the used release paper used in the method of the present invention has an excellent printing effect because it has a pigment coating layer. Therefore, the printed paper is often treated as waste paper. In the case of such waste paper, it is preferable to add a deinking agent and perform flotation treatment to remove printing ink, or to combine flotation treatment and cleaner treatment to enhance the deinking effect. Furthermore, if foreign substances such as plastics or adhesives are mixed in, these foreign substances may be removed by using a screen treatment or a lightweight foreign substance removal cleaner.
かくして、本発明の方法で得られる再生パルプは、塗被
層中の顔料や接着剤は勿論のこと、シリコン化合物やフ
ンフ化合物等の剥離剤も極めて効率よく分離除去されて
いるため、抄紙工程での抄紙用具汚れトラブルを起こす
ことがなく、夾雑物もないために、良質の紙原料として
再使用できるものである。Thus, in the recycled pulp obtained by the method of the present invention, not only pigments and adhesives in the coating layer but also release agents such as silicon compounds and fufu compounds are separated and removed very efficiently, so that they can be easily removed during the paper making process. Because it does not cause problems with paper-making equipment getting dirty and has no foreign substances, it can be reused as a high-quality paper raw material.
「実施例」
以下に、実施例を挙げて本発明をより具体的に説明する
が、勿論これらに限定されるものではない。また、例中
の％は特に断らない限り重量％を示す。"Examples" The present invention will be described in more detail with reference to Examples below, but the present invention is of course not limited to these. In addition, % in the examples indicates weight % unless otherwise specified.
実施例１
剥離紙古紙として、コート紙の片面に剥離剤としてシリ
コン化合物を塗布した剥離紙を使用し、高濃度パルパー
〔熊谷理機工業■製、高濃度パルプ離解機〕にパルプ濃
度が１５％となるように、３０゛Ｃの温水と一緒に添加
して６０９ｉ開離解処理を施した。Example 1 A release paper coated with a silicon compound coated as a release agent on one side was used as release paper waste paper, and a pulp density of 15% was applied to a high-concentration pulper (manufactured by Kumagai Riki Kogyo ■, high-concentration pulp disintegrator). It was added together with 30°C hot water and subjected to 609i dissociation treatment.
得られたパルプ懸濁液を、パルプ濃度０．８％まで希釈
し、脂肪酸のエチレンオキシド・プロピレンオキシド付
加物からなる界面活性剤（花王■製。The obtained pulp suspension was diluted to a pulp concentration of 0.8%, and a surfactant (manufactured by Kao ■) consisting of an ethylene oxide/propylene oxide adduct of fatty acids was used.
ＤＩ６１０）をパルプに対して０．３％加え、フローテ
ータ−〔共伸産業製、ファーレンヮルド型浮遊選別試験
機〕で１５分間処理した。DI610) was added at 0.3% to the pulp, and the pulp was treated for 15 minutes with a floatator (manufactured by Kyoshin Sangyo, Fahrenwoald type flotation tester).
次に、このパルプを水で洗浄処理し、ハンター白色度が
８２％の白い再生パルプを得た。この再生パルプを使用
して抄紙した紙には塗被層や剥離剤層の夾雑物がなく、
抄紙機用具の汚れも認められなかった。Next, this pulp was washed with water to obtain a white recycled pulp with a Hunter whiteness of 82%. Paper made using this recycled pulp has no impurities in the coating layer or release agent layer.
No stains on paper machine tools were observed.
実施例２
剥離紙古紙として、アート紙に剥離剤としてシリコン化
合物を塗布した剥離紙を使用し、高濃度パルパー〔熊谷
理機工業■製９高濃度バルブ離解機〕にパルプ濃度が２
０％となるように、５０℃の温水と一緒に添加して３０
分間離解処理を施した。Example 2 A release paper made of art paper coated with a silicon compound as a release agent was used as release paper waste paper.
Add it together with 50℃ hot water to make it 0%.
A disintegration treatment was performed for a minute.
得られたパルプ懸濁液を、パルプ濃度０．５％まで希釈
しハフ−クリーナー６００型で処理した。The resulting pulp suspension was diluted to a pulp concentration of 0.5% and treated with a Hough Cleaner 600 model.
次に、このパルプを水で洗浄処理し、ハンター白色度が
８３％の白い再生パルプを得た。この再生パルプを使用
して抄紙した紙には塗被層や剥離剤層の夾雑物がなく、
抄紙機用具の汚れも認められなかった。Next, this pulp was washed with water to obtain white recycled pulp with a Hunter whiteness of 83%. Paper made using this recycled pulp has no impurities in the coating layer or release agent layer.
No stains on paper machine tools were observed.
実施例３
剥離紙古紙として、印刷したコート紙に剥離剤としてシ
リコン化合物を塗布した剥離紙を使用し、高濃度パルパ
ー［熊谷理機工業■製、高濃度パルプ離解機〕にパルプ
濃度が２０％となるように、６０℃の温水と一緒に添加
し、更に脂肪酸のエチレンオキシド・プロピレンオキシ
ド付加物からなる界面活性剤〔花王■製、ＤＩ６１０）
をパルプに対して０．３％加えて、３０分間離解処理を
施した。Example 3 A release paper made of printed coated paper coated with a silicon compound as a release agent was used as release paper waste paper, and a pulp density of 20% was applied to a high-density pulper [manufactured by Kumagai Riki Kogyo ■, high-density pulp disintegrator]. A surfactant consisting of an ethylene oxide/propylene oxide adduct of fatty acids (manufactured by Kao Corporation, DI610) was added together with 60°C warm water so that
was added at 0.3% to the pulp and subjected to disintegration treatment for 30 minutes.
得られたバルブ懸濁液を、パルプ濃度０．８％まで希釈
しフローテータ−〔共伸産業製、ファーレンワルド型浮
遊選別試験機〕で１５分間処理し、更にハフ−クリーナ
ー６００型で処理した。The obtained valve suspension was diluted to a pulp concentration of 0.8%, treated with a floatator (Fahrenwald flotation tester manufactured by Kyoshin Sangyo) for 15 minutes, and further treated with a Huff Cleaner 600 model. .
次に、このパルプを水で洗浄処理し、ハンター白色度が
８１％の白い再生パルプを得た。この再生パルプを使用
して抄紙した紙には塗被層や剥離剤層の夾雑物がなく、
印刷インキも殆ど認められず、抄紙機用具の汚れもなか
った。Next, this pulp was washed with water to obtain a white recycled pulp with a Hunter whiteness of 81%. Paper made using this recycled pulp has no impurities in the coating layer or release agent layer.
Almost no printing ink was observed, and there was no staining of paper machine tools.
実施例４
剥離紙古紙として、印刷したコート紙に剥離剤としてシ
リコン化合物を塗布した剥離紙を使用し、まず、低濃度
パルパー１熊谷理機工業■製、低濃度用パルプ離解機〕
にパルプ濃度が２％となるように、６０℃の温水と一緒
に添加して２０分間離解した。次に、このパルプ懸濁液
を脱水して、パルプ濃度を３０％とし、６０ ’Ｃの条
件下でニーダ−（山本百馬製作所製〕処理を行った。Example 4 Release paper A release paper prepared by applying a silicon compound as a release agent to a printed coated paper was used as waste paper, and first, a low-density pulper 1 manufactured by Kumagai Riki Kogyo ■, a low-density pulp disintegrator]
The mixture was added together with 60°C hot water so that the pulp concentration was 2%, and disintegrated for 20 minutes. Next, this pulp suspension was dehydrated to give a pulp concentration of 30%, and treated with a kneader (manufactured by Yamamoto Hyakuma Seisakusho) at 60'C.
得られたパルプ懸濁液を、パルプ濃度２．０％まで希釈
し離解機で離解した後、更にパルプ濃度０゜８％まで希
釈し、脂肪酸のエチレンオキシド・プロピレンオキシド
付加物からなる界面活性剤（花王■製、ＤＩ６１０）を
パルプに対して０．３％加え、フローテータ−〔共伸産
業製、ファーレンワルド型浮遊選別試験機〕で１５分間
処理した。更にパワークリーナー６００型で処理した後
、パルプを水で洗浄処理してハンター白色度が８３％の
白い再生パルプを得た。この再生パルプを使用して抄紙
した紙には塗被層や剥Ｍ荊層の夾雑物がなく、印刷イン
キも殆ど認められず、抄紙機用具の汚れもなかった。The obtained pulp suspension was diluted to a pulp concentration of 2.0% and disintegrated in a disintegrator, further diluted to a pulp concentration of 0.8%, and treated with a surfactant (ethylene oxide/propylene oxide adduct of fatty acids). DI610 (manufactured by Kao Corporation) was added at 0.3% to the pulp, and treated for 15 minutes with a floatator (manufactured by Kyoshin Sangyo, Fahrenwald type flotation tester). After further treatment with Power Cleaner Model 600, the pulp was washed with water to obtain a white recycled pulp with a Hunter whiteness of 83%. The paper made using this recycled pulp had no impurities in the coated layer or peeled layer, almost no printing ink was observed, and there was no stain on the paper machine tools.
実施例５
剥離紙古紙として、印刷したコート紙に剥離剤としてシ
リコン化合物が塗布した剥離紙を使用し、まず、低濃度
パルパー〔熊谷理機工業■製、低濃度用パルプ離解機〕
にパルプ濃度が２％となるように、６０ ’Ｃの温水と
一緒に添加して２０分間離解した。次に、このパルプ懸
濁液を脱水して、パルプ濃度を３０％とし、６０℃の条
件下でニーダ−〔山零百馬製作所製］処理を行った。Example 5 Release paper A release paper coated with a silicon compound as a release agent on printed coated paper was used as waste paper, and first, a low-density pulper [manufactured by Kumagai Riki Kogyo ■, low-density pulp disintegrator] was used.
The mixture was added with hot water at 60'C so that the pulp concentration was 2%, and disintegrated for 20 minutes. Next, this pulp suspension was dehydrated to give a pulp concentration of 30%, and subjected to a kneader treatment (manufactured by Yamarei Hyakuma Seisakusho) at 60°C.
得られたパルプ懸濁液を、パルプ濃度２．０％まで希釈
し離解機で離解した後、更にパルプ濃度０゜５％まで希
釈し、パワークリーナー６００型で処理した。そして、
そのアクセプトに脂肪酸のエチレンオキシド・プロピレ
ンオキシド付加物からなる界面活性剤〔花王■製、ＤＩ
６１０）をパルプに対して０．３％加え、フローテータ
−〔共伸産業製、ファーレンワルド型浮遊選別試験機］
で１５分間処理した後、パルプを水で洗浄処理してハン
ター白色度が８３％の白い再生パルプを得た。この再生
パルプを使用して抄紙した紙には塗被層や剥離剤層の夾
雑物がなく、印刷インキも殆ど認められず、抄紙機用具
の汚れもなかった。The obtained pulp suspension was diluted to a pulp concentration of 2.0% and disintegrated in a disintegrator, further diluted to a pulp concentration of 0.5%, and treated with a Power Cleaner Model 600. and,
A surfactant consisting of an ethylene oxide/propylene oxide adduct of fatty acids [manufactured by Kao ■, DI
610) was added at 0.3% to the pulp, and a floatator [manufactured by Kyoshin Sangyo, Fahrenwald type flotation tester] was added.
After treatment for 15 minutes, the pulp was washed with water to obtain a white recycled pulp with a Hunter whiteness of 83%. Paper made using this recycled pulp had no impurities in the coating layer or release agent layer, almost no printing ink, and no stains on paper machine tools.
比較例１
実施例１において、剥離紙古紙の機械的な離解処理装置
として高濃度パルパーの代ね１）に低濃度パルパを使用
し、パルプ濃度も２．０％で処理した以外は実施例１と
同様にして再生パルプを得た。Comparative Example 1 Example 1 except that in Example 1, a low-density pulper was used in place of the high-density pulper 1) as a mechanical disintegration treatment device for waste release paper, and the pulp concentration was also 2.0%. Regenerated pulp was obtained in the same manner as above.
得られた再生パルプは、ハンター白色度が８１％と白か
ったが、この再生パルプを使用して抄紙した紙には塗被
層成分や剥離剤層成分が夾雑物として多く存在し、抄紙
機用具の汚れも認められた。The obtained recycled pulp was white with a Hunter whiteness of 81%, but paper made using this recycled pulp contained many coating layer components and release agent layer components as impurities, and paper machine tools stains were also observed.
比較例２
実施例１において、剥離紙古紙を高濃度パルパーで処理
する時の温度を２０℃とした以外は実施例１と同様にし
て再生パルプを得た。Comparative Example 2 Recycled pulp was obtained in the same manner as in Example 1, except that the temperature when treating the waste release paper with the high-density pulper was 20°C.
得られた再生パルプは、ハンター白色度が８１％と白か
ったが、この再生パルプを使用して抄紙した紙には塗被
層成分や剥離剤層成分が夾雑物として多く存在し、抄紙
機用具の汚れも認められた。The obtained recycled pulp was white with a Hunter whiteness of 81%, but paper made using this recycled pulp contained many coating layer components and release agent layer components as impurities, and paper machine tools stains were also observed.
比較例３
実施例４において、ニーダ−処理を行わなかった以外は
実施例４と同様にして再生パルプを得た。Comparative Example 3 Regenerated pulp was obtained in the same manner as in Example 4 except that the kneader treatment was not performed.
得られた再生パルプは、ハンター白色度が６８％と低く
、この再生パルプを使用して抄紙した紙には塗被層成分
や剥離剤層成分が夾雑物として多く存在し、印刷インキ
も多く認められた。また、抄紙機用具の汚れも著しかっ
た。The obtained recycled pulp had a low Hunter whiteness of 68%, and the paper made using this recycled pulp contained many coating layer components and release agent layer components as impurities, and a large amount of printing ink was also observed. It was done. In addition, the paper machine tools were extremely dirty.
「効果」
本発明の方法によれば、剥離紙古紙からシリコン等の剥
離剤層が効率良く分離除去できるため、従来、再生パル
プ化が困難とされていた剥離紙古紙の再利用が可能とな
った。しかも、抄紙工程でトラブルを起こさない良質の
再生パルプが得られるため、これを配合して調製した紙
は塗被層やンリコン層の夾雑物がなく、残インクも殆ど
認められない高品質を保持していた。"Effects" According to the method of the present invention, the release agent layer such as silicone can be efficiently separated and removed from waste release paper, making it possible to reuse waste release paper, which was conventionally considered difficult to convert into recycled pulp. Ta. Moreover, since high-quality recycled pulp is obtained that does not cause trouble during the paper-making process, the paper prepared by blending it maintains high quality with no impurities in the coating layer or rind layer, and almost no residual ink. Was.
特許出願人 神崎製紙株式会社Patent applicant: Kanzaki Paper Co., Ltd.
Claims (2)
分とする塗被層を設け、且つ該塗被層の少なくとも片面
に剥離剤層を設けた剥離紙の古紙に、（ａ）パルプ濃度
１５％以上、（ｂ）温度３０℃以上の条件下で機械的撹
拌処理を施し、次いでフローテーション処理及び／又は
クリーナー処理を施すことを特徴とする剥離紙古紙のパ
ルプ化方法。(1) A used release paper having a coating layer mainly composed of a pigment and an adhesive on at least one side of the paper base material, and a release agent layer on at least one side of the coating layer, (a) pulp A method for pulping used release paper, which comprises performing a mechanical stirring treatment under conditions of a concentration of 15% or more and (b) a temperature of 30° C. or more, followed by a flotation treatment and/or a cleaner treatment.
〜９０℃の条件下で剥離紙古紙に機械的攪拌処理を施す
請求項（１）記載のパルプ化方法。(2) (a) Pulp concentration 20-35%, (b) Temperature 50%
The pulping method according to claim 1, wherein the waste release paper is mechanically agitated at a temperature of 90°C to 90°C.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2296457A JPH04209880A (en) | 1990-10-31 | 1990-10-31 | Method for pulping waste release paper |
| US07/862,539 US5316621A (en) | 1990-10-19 | 1991-10-07 | Method of pulping waste pressure-sensitive adhesive paper |
| PCT/JP1991/001366 WO1992007137A1 (en) | 1990-10-19 | 1991-10-07 | Method of pulping waste pressure-sensitive adhesive paper |
| DE19914192568 DE4192568C2 (en) | 1990-10-19 | 1991-10-07 | Process for the preparation of self-adhesive waste paper |
| DE19914192568 DE4192568T (en) | 1990-10-19 | 1991-10-07 | |
| FI922756A FI103900B1 (en) | 1990-10-19 | 1992-06-15 | Method of defibrating pressure-sensitive return adhesive paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2296457A JPH04209880A (en) | 1990-10-31 | 1990-10-31 | Method for pulping waste release paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04209880A true JPH04209880A (en) | 1992-07-31 |
Family
ID=17833801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2296457A Pending JPH04209880A (en) | 1990-10-19 | 1990-10-31 | Method for pulping waste release paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04209880A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994028235A1 (en) * | 1993-05-26 | 1994-12-08 | J. M. Voith Gmbh | Method of processing recycled paper |
| EP0632158A1 (en) * | 1993-06-29 | 1995-01-04 | J.M. Voith GmbH | Process for the treatment of waste paper |
| US5707489A (en) * | 1993-05-26 | 1998-01-13 | J.M. Voith Gmbh | Processing wastepaper containing waxes, hot melts and adhesives |
| JP2009508019A (en) * | 2005-09-13 | 2009-02-26 | ジョンソンディーバーシー・インコーポレーテッド | Methods used for the manufacture of paper products |
-
1990
- 1990-10-31 JP JP2296457A patent/JPH04209880A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994028235A1 (en) * | 1993-05-26 | 1994-12-08 | J. M. Voith Gmbh | Method of processing recycled paper |
| US5707489A (en) * | 1993-05-26 | 1998-01-13 | J.M. Voith Gmbh | Processing wastepaper containing waxes, hot melts and adhesives |
| EP0632158A1 (en) * | 1993-06-29 | 1995-01-04 | J.M. Voith GmbH | Process for the treatment of waste paper |
| JP2009508019A (en) * | 2005-09-13 | 2009-02-26 | ジョンソンディーバーシー・インコーポレーテッド | Methods used for the manufacture of paper products |
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