JPH06155955A - Thermosensitive stencil tissue - Google Patents
Thermosensitive stencil tissueInfo
- Publication number
- JPH06155955A JPH06155955A JP31156492A JP31156492A JPH06155955A JP H06155955 A JPH06155955 A JP H06155955A JP 31156492 A JP31156492 A JP 31156492A JP 31156492 A JP31156492 A JP 31156492A JP H06155955 A JPH06155955 A JP H06155955A
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- JP
- Japan
- Prior art keywords
- paper
- fiber
- fibers
- resin
- less
- 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
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、感熱孔版原紙に係わ
り、特にキセノンフラッシュランプによる閃光またはサ
ーマルヘッドのような感熱素子によって熱穿孔され、孔
版印刷に使用される感熱孔版原紙の多孔性支持体として
用いる薄葉紙に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-sensitive stencil sheet, and more particularly to a porous support for a heat-sensitive stencil sheet which is used for stencil printing by being perforated by a flash of a xenon flash lamp or a heat-sensitive element such as a thermal head. It relates to thin paper used as.
【０００２】[0002]
【従来の技術】感熱孔版原紙は、熱可塑性樹脂フィルム
と多孔性支持体を貼合わせたもので、最近、孔版印刷の
刷り上がりをよくするため、この感熱孔版用原紙の改
良、すなわち熱可塑性樹脂フィルムの材質及び厚さを薄
くする改良、または多孔性支持体の改良等がなされてい
る。2. Description of the Related Art A heat-sensitive stencil sheet is a laminate of a thermoplastic resin film and a porous support. Recently, in order to improve the printing quality of stencil printing, an improvement of the heat-sensitive stencil sheet, that is, a thermoplastic resin film. The material and the thickness have been improved, or the porous support has been improved.
【０００３】多孔性支持体は、熱可塑性樹脂フィルムを
支持するためのもので、感熱孔版原紙の補強、良好な画
像の確保、印刷耐久性等の向上のために用いられてい
る。その材質としては、薄葉紙、紗（スクリーン）、不
織布等が使用されている。紗を使用すれば、高解像性の
印刷物が得られるが、紗自体の価格が高いこと、また不
織布はその繊維径が太いために低品位の印刷物しか得ら
れないこと等の理由から一般に薄葉紙が使用されてい
る。多孔性薄葉紙としては、こうぞ、みつまた、マニ
ラ麻などの非木材パルプの天然繊維から抄造したいわゆ
る和紙（特公昭４１−７６２３号公報）、レーヨン、
ビニロン、ポリエステル、ナイロンなどの再生繊維や合
成繊維を紙状に抄造したもの、上記の非木材パルプ
の天然繊維との再生繊維や合成繊維とを混合して抄造
した混抄紙（特公昭４９−１８７２８号公報）、薄葉
紙が単糸繊度３．０デニール以下、溶融切断温度１２５
〜２００℃の熱可塑性合成繊維８０％以上より成るもの
（特開昭５９−３３１９７号公報）などが一般に知られ
ている。The porous support is for supporting the thermoplastic resin film and is used for reinforcing the heat-sensitive stencil sheet, ensuring a good image, and improving printing durability. As the material, thin paper, gauze (screen), non-woven fabric and the like are used. When gauze is used, a high-resolution printed matter can be obtained, but because the gauze itself is expensive, and because the nonwoven fabric has a large fiber diameter, only a low-quality printed matter can be obtained. Is used. Examples of the porous thin paper include so-called Japanese paper (Japanese Patent Publication No. 41-7623), rayon, which is made from natural fibers of non-wood pulp such as Kozo, Mitsumata and Manila hemp.
Paper made from recycled fibers or synthetic fibers such as vinylon, polyester, nylon, etc., and mixed paper made by mixing recycled fibers or synthetic fibers with the above-mentioned non-wood pulp natural fibers (Japanese Patent Publication No. 49-18728). Gazette), the thin paper has a single yarn fineness of 3.0 denier or less, and a melt cutting temperature of 125.
Those composed of 80% or more of thermoplastic synthetic fibers at ˜200 ° C. (Japanese Patent Laid-Open No. 59-33197) and the like are generally known.
【０００４】また、かかる薄葉紙は、合成樹脂の液を含
浸して、しかも薄葉紙と熱可塑性樹脂フィルムとの接着
剤としても機能させうるような合成樹脂による加工の提
案（特公昭５５−４７９９７号公報）、さらには上記
の非木材パルプの天然繊維とのポリエステル繊維を
混合して抄造した混抄紙に特定の樹脂との組合せによる
もの（特開平１−２７１２９３号公報）などがなされて
いる。Further, such a thin paper is proposed to be processed by a synthetic resin which can be impregnated with a liquid of a synthetic resin and can also function as an adhesive between the thin paper and the thermoplastic resin film (Japanese Patent Publication No. 55-47997). ), And further, a mixed paper made by mixing polyester fibers with the above-mentioned non-wood pulp natural fibers and combining them with a specific resin (JP-A 1-271293).
【０００５】従来技術による薄葉紙には次のような欠点
があった。すなわち、前記の非木材パルプの天然繊維
を用いた薄葉紙は、抄造時に分散剤や粘剤を添加するも
のの繊維の不均一分散に起因する結束等がいわゆる和紙
目としてインキの通過を阻害し、画像に欠点や欠落部が
生じるのみならず、抄造時に紙力増強剤が一般に添加さ
れるものの紙力強度が充分でないために原紙にシワが発
生したり印刷耐久性が不足している。また、前記およ
びの再生繊維、または合成繊維と非木材パルプの天然
繊維との混合紙の場合は、繊維の均一分散性に改善がみ
られるものの、繊維の交叉部の固定が不充分で紙力強度
不足であるために、変形したり繊維がラミネート加工時
や印刷時に抜けて画像性を損なったりし、また印刷耐久
性にも劣るものである。湿潤時の寸法安定性の向上を計
った特開昭６１−２５４３９６号公報の場合もポリエス
テル繊維やレーヨンスフを配合したり抄造時にエポキシ
化ポリアミドポリアミン樹脂などの湿潤紙力増強剤を添
加して改善しようと試みているが、繊維の交叉部の固定
が充分ではなく印刷耐久性や画像性に劣るものである。
さらに、特開昭５９−３３１９７号公報の場合は、サ
ーマルヘッドで原紙に製版する時に熱による熱収縮が大
きく、変形、シワの発生で原稿に忠実な印刷物が得られ
ず、問題である。さらに、ラミネート加工時に感熱フィ
ルムと薄葉紙との接着が悪く、部分的にフィルムとの剥
離が起こるという問題があり、結局は画像性や印刷耐久
性を低下させている。The conventional thin paper has the following drawbacks. That is, the thin paper using the natural fibers of the non-wood pulp, the binding and the like due to the non-uniform dispersion of the fibers of the disintegrating agent or the sticking agent added during the papermaking inhibits the passage of ink as so-called Japanese paper, In addition to defects and missing parts, paper strength enhancers are generally added at the time of papermaking, but the paper strength is not sufficient, resulting in wrinkles on the base paper and insufficient printing durability. Further, in the case of the mixed paper of the above-mentioned and regenerated fibers or the synthetic fibers and the natural fibers of the non-wood pulp, although the uniform dispersibility of the fibers is improved, the fixation of the intersecting portions of the fibers is insufficient and the paper strength is insufficient. Since the strength is insufficient, the fibers may be deformed or the fibers may come off during laminating or printing to impair the image quality, and the printing durability may be poor. In the case of Japanese Patent Laid-Open No. 61-254396, which is intended to improve the dimensional stability when wet, it should be improved by blending polyester fiber or rayon fiber or adding a wet paper strengthening agent such as epoxidized polyamide polyamine resin during papermaking. However, the fixing of the fiber crossing portion is not sufficient and the printing durability and the image quality are poor.
Further, in the case of Japanese Patent Laid-Open No. 59-33197, there is a problem in that a heat shrink due to heat is large when a base paper is made by a thermal head, and a printed matter faithful to an original cannot be obtained due to deformation and wrinkles. Further, there is a problem that the heat-sensitive film and the thin paper are poorly adhered to each other during the laminating process, so that the film is partially peeled off, which eventually deteriorates the image quality and the printing durability.
【０００６】また、前記特公昭５５−４７９９７号公報
の合成樹脂による加工は、比較的低い軟化点の樹脂を使
用して薄葉紙と熱可塑性樹脂フィルムとの接着剤の機能
をもっているために、繊維の交叉部を耐熱性のある強固
な樹脂で結着しているとはいえず、樹脂の軟化や補強不
足があるために紙力強度、印刷耐久性ともに満足できる
ものではない。Further, the processing with the synthetic resin described in Japanese Patent Publication No. 55-47997 described above uses a resin having a relatively low softening point and has a function of an adhesive between the thin paper and the thermoplastic resin film. It cannot be said that the crossing portion is bound with a strong resin having heat resistance, and paper strength and printing durability are not satisfactory due to softening and insufficient reinforcement of the resin.
【０００７】さらにまた、前記特開平１−２７１２９３
号公報の上記の非木材パルプの天然繊維とのポリエ
ステル繊維を混合して抄造した混抄紙に特定の樹脂との
組合せによるものは、摩擦帯電圧が大きいために、感熱
孔版原紙を全自動印刷機で使用する時に、カールした
り、搬送ゴムロール等にまとわりついたりして、ハンド
リング性に劣るという問題点があった。Furthermore, the above-mentioned JP-A-1-271293
The combination of the above-mentioned publication in which the non-wood pulp natural fibers and the polyester fibers are mixed to form a mixed paper in combination with a specific resin has a large friction electrification voltage. When it is used in, the curling or clinging to the conveying rubber roll or the like causes a problem of poor handling property.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、感熱孔版原
紙に用いる薄葉紙に求められている性能である（Ｉ）イ
ンキの通過性がよく、画像が鮮明で解像性に優れるこ
と、（ＩＩ）印刷耐久性に優れること、（ＩＩＩ）紙力
強度に優れかつ繊維の抜けがないこと、（ＩＶ）摩擦帯
電圧が大きくならないこと、などの要件を満足するもの
を提供しようとするものである。DISCLOSURE OF THE INVENTION The present invention is a performance required for a thin paper used as a heat-sensitive stencil sheet (I) good ink permeability, a clear image and excellent resolution. ) It is intended to provide those satisfying the requirements such as excellent printing durability, (III) excellent paper strength and no fiber loss, and (IV) not increasing friction electrification voltage. .
【０００９】[0009]
【課題を解決するための手段】本発明者らは、今まで着
目されなかった木材パルプを主組成分とした紙に、樹脂
を抄造後に加えたものが、予想以上に繊維の交叉部をイ
ンキの通過を低下させることなくほぼ均一に強固に固定
させることができ、繊維の抜けがなく、摩擦帯電圧が小
さいことを見いだした。すなわち、木材パルプ繊維と樹
脂との組合せによって、初めて、薄葉紙で紙力強度が強
く、良質な画像性を得られ、摩擦帯電圧の小さいことを
見いだし、感熱孔版原紙用薄葉紙に要求される諸要件が
同時に満足される本発明に到達した。Means for Solving the Problems The inventors of the present invention added paper after papermaking to paper containing wood pulp as a main component, which has not been noticed until now, and found that the crossing portion of the fiber was more than expected. It was found that they can be firmly fixed almost uniformly without reducing the passage of the fibers, there is no fiber loss, and the frictional electrification voltage is small. That is, it was found for the first time that the combination of wood pulp fiber and resin enables thin paper to have high paper strength, good image quality, and low friction electrification voltage, and various requirements for thin paper for heat-sensitive stencil base paper. At the same time, the present invention is satisfied.
【００１０】すなわち、本発明は、繊維の太さが６０μ
ｍ以下、繊維長１０ｍｍ以下の木材パルプ繊維２５重量
％以上よりなる、坪量５〜１５ｇ／ｍ2 の紙に樹脂加工
を施したことを特徴とする感熱孔版原紙用薄葉紙であ
る。本発明に用いられる木材パルプ繊維としては、繊維
太さが６０μｍ以下であることが必要である。繊維太さ
が６０μｍを越えると、インキの通過を阻害し、そのた
め画像性を落とす。好ましい繊維の太さは４５μｍ以下
である。また、木材パルプ繊維の繊維長は１０ｍｍ以下
でなければならない。繊維長が１０ｍｍを越えると、繊
維の分散が悪く画像性を落とすので好ましくなく、好ま
しくは７ｍｍ以下である。また、木材パルプ繊維を２５
重量％以上配合して抄造する必要がある。木材パルプ繊
維が２５重量％未満であると均一な繊維の分散性や繊維
結束の少ない良好な地合が得られず、繊維が抜け易いの
で好ましくない。That is, according to the present invention, the thickness of the fiber is 60 μm.
A thin paper for heat-sensitive stencil base paper, characterized in that a paper having a basis weight of 5 to 15 g / m 2 and comprising 25% by weight or more of wood pulp fibers having a fiber length of 10 mm or less and a fiber length of 10 mm or less is resin-processed. The wood pulp fiber used in the present invention must have a fiber thickness of 60 μm or less. If the fiber thickness exceeds 60 μm, the passage of ink is impeded, and the image quality is deteriorated. The preferable fiber thickness is 45 μm or less. The fiber length of the wood pulp fiber must be 10 mm or less. If the fiber length exceeds 10 mm, the fibers are not well dispersed and the image quality is deteriorated, which is not preferable, and it is preferably 7 mm or less. Also, 25 wood pulp fibers
It is necessary to compound by weight% or more to make paper. If the wood pulp fiber content is less than 25% by weight, uniform dispersibility of the fibers and good formation with less fiber binding cannot be obtained, and the fibers are likely to come off, which is not preferable.
【００１１】本発明において、紙を構成する木材パルプ
繊維以外の繊維としては通常使用される天然繊維及び／
または再生繊維、合成繊維が用いられる。好ましくはマ
ニラ麻、亜麻等の天然靭皮繊維、ビスコース法レーヨン
繊維、銅アンモニア法レーヨン繊維等の再生繊維、ポリ
エステル、ビニロン等の合成繊維が用いられ、再生繊
維、合成繊維の繊維径は１８μｍ以下、繊維長は１５ｍ
ｍ以下が繊維の分散性及び絡みによる結束の点で好まし
い。In the present invention, as the fibers other than the wood pulp fibers constituting the paper, natural fibers and / or
Alternatively, recycled fiber or synthetic fiber is used. Preferably used are natural bast fibers such as Manila hemp and flax, regenerated fibers such as viscose rayon fibers and copper-ammonia rayon fibers, and synthetic fibers such as polyester and vinylon. The regenerated fibers and synthetic fibers have a fiber diameter of 18 μm or less. , Fiber length is 15m
m or less is preferable in terms of dispersibility of fibers and binding due to entanglement.
【００１２】本発明では、抄造した紙の坪量は坪量５〜
１５ｇ／ｍ2 である必要がある。坪量が５ｇ／ｍ2 より
軽いと、印刷耐久性が低く好ましくなく、また坪量が１
５ｇ／ｍ2 より重いと、インキの通過を著しく損ない画
像性が悪くなるので好ましくない。好ましくは、坪量８
〜１３．５ｇ／ｍ2 であり、かつ密度（坪量÷厚さ）が
０．２５〜０．４０ｇ／ｃｍ3 である。この範囲では、
画像性は鮮明で優れている。紙の抄造にあたっては、通
常使用される分散剤や粘剤、消泡剤、剥離剤、紙力増強
剤、サイズ剤、帯電防止剤等の配合をしても良い。In the present invention, the basis weight of the paper made is 5 to 5 basis weight.
It should be 15 g / m 2 . When the basis weight is less than 5 g / m 2 , printing durability is low and it is not preferable, and the basis weight is 1
If it is heavier than 5 g / m 2, it is not preferable because it significantly impairs the ink passage and deteriorates the image quality. Preferably, the basis weight is 8
˜13.5 g / m 2 , and the density (basis weight / thickness) is 0.25 to 0.40 g / cm 3 . In this range,
The image quality is clear and excellent. In the papermaking of paper, a dispersant, a sticking agent, a defoaming agent, a release agent, a paper strengthening agent, a sizing agent, an antistatic agent and the like which are commonly used may be added.
【００１３】本発明の薄葉紙は、加工によって紙の繊維
の交叉部及び表面に３ｇ／ｍ2 以下の量の樹脂を有す
る。樹脂量が３ｇ／ｍ2 を越えると、多孔性薄葉紙の開
口部に樹脂膜が多数形成しインキの通過を著しく損ない
画像性を低下させる。好ましくは、０．２〜２．０ｇ／
ｍ2 である。本発明に使用される樹脂としては、溶剤溶
液型のもの、水溶性のもの、水分散型（エマルジョンタ
イプ）のもの等がある。また、非反応性のもの、反応性
のもの（１液タイプ、２液タイプ但し２液タイプの場合
には架橋剤並びに架橋促進剤等を組み合わせて反応をお
こなわせる）いずれかであってもよい。樹脂の種類は、
ウレタン、アクリル、エポキシ、ビスコース等が使用さ
れる。さらに、フィルムとのラミネート時にラミネート
樹脂でもよい。The thin paper of the present invention has a resin amount of 3 g / m 2 or less at the crossing portion and the surface of the fiber of the paper by processing. If the amount of resin exceeds 3 g / m 2 , a large number of resin films will be formed in the openings of the porous thin paper, and the passage of ink will be significantly impaired, and the image quality will deteriorate. Preferably 0.2-2.0 g /
m 2 . As the resin used in the present invention, there are a solvent solution type, a water soluble type, a water dispersion type (emulsion type) and the like. Further, it may be either a non-reactive one or a reactive one (in the case of the one-liquid type, the two-liquid type, but in the case of the two-liquid type, the reaction is carried out by combining a crosslinking agent, a crosslinking accelerator and the like). . The type of resin is
Urethane, acrylic, epoxy, viscose, etc. are used. Furthermore, a laminating resin may be used when laminating the film.
【００１４】紙の樹脂加工は、紙に溶液あるいはエマル
ジョンを含浸あるいはグラビアロール等で均一に塗布す
るのが好ましく、その後熱風乾燥機あるいは熱ロールで
乾燥させる時、温度５０〜２１０℃が好適である。さら
に、乾燥と同時に熱ロールにて熱圧加工を施すと紙力強
度をさらに向上させることができる。樹脂加工におい
て、特に樹脂濃度に注意する必要がある。紙の坪量や樹
脂の種類によって多少異なるが、７〜３０％溶液が望ま
しい。濃度が３０％を越えると、薄葉紙の開口部に樹脂
が膜を張ったりして、インキの通過を妨げ画像性を損な
う。また、濃度が低過ぎると水系樹脂の場合に紙にシワ
や収縮が著しく発生するので好ましくない。樹脂加工に
おいて、一般に抄造時に用いられている紙力増強剤やサ
イズ剤等を併用してもよい。For the resin processing of paper, it is preferable to impregnate the paper with a solution or emulsion or apply it uniformly with a gravure roll or the like. When it is subsequently dried with a hot air drier or a hot roll, a temperature of 50 to 210 ° C. is suitable. . Further, the paper strength can be further improved by performing hot pressing with a hot roll simultaneously with drying. In resin processing, it is necessary to pay particular attention to the resin concentration. A 7 to 30% solution is desirable, although it varies slightly depending on the basis weight of the paper and the type of resin. If the density exceeds 30%, the resin may form a film on the opening of the thin paper, impeding the passage of ink and impairing the image quality. On the other hand, if the concentration is too low, wrinkles and shrinkage will occur remarkably on the paper in the case of an aqueous resin, which is not preferable. In the resin processing, a paper strength enhancer, a sizing agent and the like generally used at the time of papermaking may be used together.
【００１５】本発明において、摩擦帯電圧を低くできる
メカニズムは、次のようなことが推定される。 （１）天然繊維の保有水分率が６％前後で、帯電しにく
い。。 （２）樹脂加工時、紙の繊維の交叉部に毛細管現象で樹
脂が寄っていくことにより、繊維が樹脂によって被覆さ
れる面積が小さい。In the present invention, the mechanism by which the frictional electrification voltage can be lowered is estimated as follows. (1) The natural moisture content of the natural fiber is around 6%, which makes it difficult to be charged. . (2) When the resin is processed, the resin approaches the intersection of the fibers of the paper due to the capillary phenomenon, so that the area where the fibers are covered with the resin is small.
【００１６】このようなことから、繊維自身は固有の水
分率を保持することにより、帯電圧を小さくできるもの
と推定される。 〈特性の測定方法ならびに評価方法〉本発明で用いる各
特性は、次の方法により評価したものである。 （１）画像性の評価 ＪＩＳ第一水準の文字及び図柄を文字サイズ５ｍｍ□〜
２０ｍｍ□および直径１〜１０ｍｍの丸で中が黒く塗り
つぶされた円図を原稿として使用した。また、感熱フィ
ルム（延伸された熱可塑性合成樹脂フィルム）として２
μｍのポリエステルフィルムと本発明の多孔性支持体と
しての薄葉紙（実施例、比較例ともに同様にして）とを
ドライラミネーター接着剤”バイロン３００”（東洋紡
（株）製）を用いてドライラミネーターで貼合わせて感
熱孔版用原紙（以下マスターと呼ぶ）とした。From the above, it is presumed that the fiber itself can reduce the electrification voltage by holding the inherent moisture content. <Characteristic Measuring Method and Evaluation Method> Each characteristic used in the present invention is evaluated by the following methods. (1) Evaluation of image quality Character size of JIS 1st level characters and designs is 5mm
A circle drawing of 20 mm square and a circle having a diameter of 1 to 10 mm and filled in black was used as a document. Also, as a heat-sensitive film (stretched thermoplastic synthetic resin film), 2
Using a dry laminator, a dry laminator adhesive “Vylon 300” (manufactured by Toyobo Co., Ltd.) was used to attach a μm polyester film and thin paper (the same as in the examples and comparative examples) as the porous support of the present invention. Together, they were used as heat-sensitive stencil sheet (hereinafter referred to as master).
【００１７】このマスターならびに原稿を用いて、デジ
タル式全自動孔版印刷機（理想科学工業製のリソグラフ
００７ＤＰＮ）で製版し、印刷したものを次のようにし
て評価した。評価は肉眼判定で○、△、×の３段階で行
い、○は原稿と同様に鮮明に見えるもので文字の太さの
ムラや黒ベタ部分の白抜けがないもの、×は原稿と異な
り線が部分的に切れたり、文字の太さにムラがあり判読
が難しく使用できないものを言う。その中間の線が部分
的に切れたり文字の太さムラがあっても判読ができて使
用可能なものを△で示した。 （２）印刷耐久性 印刷の耐久枚数で○、△、×の３段階評価を行った。す
なわち、前記(1)の印刷機でマスターに破れやシワ、ス
ジ状のもの等が生じたり、１枚目と同じ文字や線、黒ベ
タ部の印刷性が得られなくなるまでの枚数を調べ、３，
０００枚以上を○、１，５００〜３，０００枚未満を
△、１，５００枚未満を×とした。 （３）紙力強度 薄葉紙の引っ張り破断強さ（ＪＩＳ Ｐ−８１１３及び
ＪＩＳ Ｐ−８１３５）を抄紙方向（縦）の強度で、ド
ライ条件及びウェット条件で評価した。ドライ条件は、
試験片を恒温（２２℃）恒湿（相対湿度６６％）で２４
時間静置したものであり、ウェット条件はさらにその条
件で静置後試験片を１５℃の水中に２０分浸漬したもの
である。単位：Ｋｇ／１５ｍｍ幅 （４）厚さ ＪＩＳ Ｐ−８１１８により測定。 （５）通気度 ＴＡＰＰＩ Ｔ−４６０により測定。但し、薄葉紙を２
枚重ねて測定した。単位：ＣＣ／ｃｍ2 ／秒 （６）摩擦帯電圧 ＪＩＳ Ｌ−１０９４により測定。The master and the original were used to make a plate with a digital full-automatic stencil printer (lithograph 007DPN manufactured by Riso Kagaku Kogyo Co., Ltd.), and the printed matter was evaluated as follows. The evaluation is made with the naked eye in three grades of ○, △, and ×. ○ is something that looks as clear as the original, without unevenness in the thickness of characters and black spots in white areas, and × is a line different from the original. It is difficult to read because it is partially cut off or the thickness of the characters is uneven. Even if the line in the middle is partially cut or the thickness of the character is uneven, it is legible and can be used. (2) Printing Durability The number of durable prints was evaluated in three grades of ◯, Δ, and ×. That is, in the printing machine of the above (1), the master has tears, wrinkles, stripes, etc., and the number of sheets until the printability of the same letters and lines as the first sheet and the black solid portion cannot be obtained, Three
000 sheets or more were evaluated as ◯, 1,500 to less than 3,000 sheets were evaluated as Δ, and less than 1,500 sheets were evaluated as x. (3) Paper Strength The tensile breaking strength (JIS P-8113 and JIS P-8135) of thin paper was evaluated in the papermaking direction (longitudinal) under dry and wet conditions. The dry conditions are
Test pieces at constant temperature (22 ° C) and constant humidity (relative humidity 66%) for 24
The test piece was allowed to stand for a time, and the wet condition was that the test piece was immersed in water at 15 ° C. for 20 minutes after being allowed to stand under the condition. Unit: Kg / 15 mm width (4) Thickness Measured according to JIS P-8118. (5) Air permeability Measured by TAPPI T-460. However, 2 sheets of thin paper
The measurement was performed by stacking one sheet. Unit: CC / cm 2 / sec (6) Friction electrification voltage Measured according to JIS L-1094.
【００１８】 摩擦布：ＪＩＳ Ｌ−０８０３に規定の綿添付白布 測定条件：２０℃×湿度４０％ 帯電電位で、○、△、×の３段階評価を行った。静電気
安全指針の電撃の強さを参考にした。すなわち、１，５
００Ｖ以下を○、１，５００〜２，５００Ｖ未満を△、
２，５００Ｖ以上を×とした。Friction cloth: White cloth attached to cotton specified in JIS L-0803 Measurement conditions: 20 ° C. × 40% humidity 40 ° C. A three-level evaluation of ◯, Δ, and × was performed at a charging potential. I referred to the electric shock strength of the electrostatic safety guideline. That is, 1,5
00V or less is ◯, 1,500 to less than 2,500V is Δ,
2,500 V or more was rated as x.
【００１９】[0019]
【実施例】以下、本発明を実施例および比較例によって
本発明をさらに詳細に説明する。なお、％は重量％を表
す。The present invention will be described in more detail below with reference to Examples and Comparative Examples. In addition,% represents% by weight.
【００２０】[0020]
【実施例１〜５】 （Ａ）：針葉樹晒クラフトパルプ（Ｎ−ＢＫＰ）を水で
濃度３％にし、離解機で離解し、ビーターにて濾水度１
８゜ＳＲ（ＪＩＳ Ｐ−８１２１）に叩解したものと、
表１に示す各種繊維とを表３の”薄葉紙の組成項”に示
した配合％で均一に混合し、これにエポキシ化ポリアミ
ドポリアミン樹脂を繊維に対して２％となるように水溶
液にして均一に混合し、これを紙料として円網式抄紙機
にて湿式抄紙法により表３の”紙の基本特性の項”に示
した坪量、厚さ、密度の紙を各々抄造した。Examples 1 to 5 (A): Conifer bleached kraft pulp (N-BKP) was made to have a concentration of 3% with water, disintegrated with a disintegrator, and drained with a beater to have a freeness of 1
What was beaten to 8 ° SR (JIS P-8121),
The various fibers shown in Table 1 were uniformly mixed at the compounding percentage shown in "Composition of thin paper" in Table 3, and the epoxidized polyamide polyamine resin was made into an aqueous solution so as to be 2% with respect to the fibers and uniformly mixed. Was mixed with each other and used as a paper stock by a wet paper making method using a cylinder paper machine to make papers having the basis weights, thicknesses and densities shown in "Basic property of paper" in Table 3.
【００２１】（Ｂ）：前記（Ａ）で得た個々の紙の巻取
りロールを、表２の樹脂を塗工もしくは、含浸し、加工
後の樹脂付着量を表３の樹脂量の項に示す。 （Ｃ）：前記（Ｂ）で得た加工された薄葉紙の特性なら
びにフィルムとラミネートして得たマスターの評価結果
を表３に示す。(B): The individual paper take-up rolls obtained in the above (A) are coated or impregnated with the resin shown in Table 2, and the resin adhesion amount after processing is shown in the resin amount section of Table 3. Show. (C): Table 3 shows the characteristics of the processed thin paper obtained in (B) above and the evaluation results of the master obtained by laminating it with a film.
【００２２】[0022]
【比較例１】実施例１と同様にして作成した紙そのもの
の特性評価を行った。その結果を表４に示す。Comparative Example 1 The characteristics of the paper itself produced in the same manner as in Example 1 were evaluated. The results are shown in Table 4.
【００２３】[0023]
【比較例２】平均繊維太さ６１μｍ以上のＮ−ＢＫＰパ
ルプを選択的に集め、実施例２と同様にして作成した紙
に樹脂加工したもの及びそのものの特性評価を行った。
その結果を表４に示す。[Comparative Example 2] N-BKP pulp having an average fiber thickness of 61 µm or more was selectively collected, and the paper prepared in the same manner as in Example 2 was subjected to resin treatment and its characteristics were evaluated.
The results are shown in Table 4.
【００２４】[0024]
【比較例３】平均繊維長さが１１ｍｍ以上のものをふる
いわけで集め、実施例２と同様にして作成した紙そのも
のおよび樹脂加工したものの特性評価を行った。その結
果を表４に示す。[Comparative Example 3] Those having an average fiber length of 11 mm or more were collected by sieving and the properties of the paper itself prepared in the same manner as in Example 2 and the resin-processed product were evaluated. The results are shown in Table 4.
【００２５】[0025]
【比較例４〜５】実施例２〜７と同様にして作成した紙
に、さらに実施例１〜６の（Ｂ），（Ｃ）項と同様の樹
脂加工したもの及びそのものの特性評価を行った。その
結果を表４に示す。[Comparative Examples 4 to 5] Papers prepared in the same manner as in Examples 2 to 7 were further resin-treated in the same manner as in (B) and (C) of Examples 1 to 6 and their characteristics were evaluated. It was The results are shown in Table 4.
【００２６】[0026]
【表１】 [Table 1]
【００２７】[0027]
【表２】 [Table 2]
【００２８】[0028]
【表３】 [Table 3]
【００２９】[0029]
【表４】 [Table 4]
【００３０】[0030]
【発明の効果】本発明は、木材パルプ繊維の限られた範
囲で得られる感熱孔版用原紙の薄葉紙であり、次のよう
な優れた効果を得ることができたものである。すなわ
ち、 （１）摩擦帯電圧が小さいことから、多孔性支持体とし
て、静電気発生の少ない和紙がえられる。 （２）樹脂加工により、高強度の和紙が得られ、印刷耐
久性に優れる。 （３）印刷時の画像が鮮明で高品位である。 このように、多孔性支持体としての優れた性能を兼ね備
えている。INDUSTRIAL APPLICABILITY The present invention is a thin paper for heat-sensitive stencil that can be obtained in a limited range of wood pulp fibers, and has the following excellent effects. That is, (1) since the frictional electrification voltage is small, it is possible to obtain, as the porous support, washi paper with less static electricity generation. (2) By resin processing, high-strength Japanese paper is obtained, and printing durability is excellent. (3) The image at the time of printing is clear and of high quality. In this way, it also has excellent performance as a porous support.
Claims (1)
ｍ以下の木材パルプ繊維２５重量％以上よりなる、坪量
５〜１５ｇ／ｍ2 の紙に樹脂加工を施した感熱孔版原紙
用薄葉紙。1. A fiber thickness of 60 μm or less and a fiber length of 10 m
A thin paper for heat-sensitive stencil base paper, which is made of 25% by weight or more of wood pulp fibers of m or less and has a basis weight of 5 to 15 g / m 2 which is resin-processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31156492A JPH06155955A (en) | 1992-11-20 | 1992-11-20 | Thermosensitive stencil tissue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31156492A JPH06155955A (en) | 1992-11-20 | 1992-11-20 | Thermosensitive stencil tissue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06155955A true JPH06155955A (en) | 1994-06-03 |
Family
ID=18018754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31156492A Pending JPH06155955A (en) | 1992-11-20 | 1992-11-20 | Thermosensitive stencil tissue |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06155955A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006321132A (en) * | 2005-05-19 | 2006-11-30 | Asahi Kasei Chemicals Corp | Stencil sheet for thermal stencil process printing and stencil |
| CN114875706A (en) * | 2022-04-02 | 2022-08-09 | 浙江凯恩新材料有限公司 | Raw paper of high-performance all-in-one machine thermosensitive version paper, production process and thermosensitive version paper prepared by production process |
-
1992
- 1992-11-20 JP JP31156492A patent/JPH06155955A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006321132A (en) * | 2005-05-19 | 2006-11-30 | Asahi Kasei Chemicals Corp | Stencil sheet for thermal stencil process printing and stencil |
| CN114875706A (en) * | 2022-04-02 | 2022-08-09 | 浙江凯恩新材料有限公司 | Raw paper of high-performance all-in-one machine thermosensitive version paper, production process and thermosensitive version paper prepared by production process |
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