JPS63283994A - Thermal stencil paper - Google Patents

Thermal stencil paper

Info

Publication number
JPS63283994A
JPS63283994A JP11969687A JP11969687A JPS63283994A JP S63283994 A JPS63283994 A JP S63283994A JP 11969687 A JP11969687 A JP 11969687A JP 11969687 A JP11969687 A JP 11969687A JP S63283994 A JPS63283994 A JP S63283994A
Authority
JP
Japan
Prior art keywords
heat
layer
sensitive stencil
porous thin
paper
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
Application number
JP11969687A
Other languages
Japanese (ja)
Inventor
Yasushi Inoue
泰史 井上
Yuji Hotta
祐治 堀田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitto Denko Corp
Original Assignee
Nitto Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nitto Electric Industrial Co Ltd filed Critical Nitto Electric Industrial Co Ltd
Priority to JP11969687A priority Critical patent/JPS63283994A/en
Publication of JPS63283994A publication Critical patent/JPS63283994A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain a stencil paper which does not cause fogging of a printed matter and is favorable in plate wear characteristics, by using a thermoplastic polymer containing a polymer the same as or similar to a material for a porous film material. CONSTITUTION:A thermal stencil paper comprises a coated layer comprising a thermoplastic polymer as a main constituent, as a thermal stencil layer on one side of a porous film material. The porous film material is a paper made from natural fibers, synthetic fibers or a mixture thereof or a nonwoven fabric. The thermoplastic polymer contains at least one polymer the same as or similar to a material for the porous film material. The thermoplastic polymer preferably has an average molecular weight of generally several tens of thousands to several hundreds of thousands, from the viewpoints of film-forming properties or plate wear characteristics. Various additives such as an anti-oxidant, a lubricant, a plasticizer and an antistaic agent may be incorporated in the coated layer, as required.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は多孔性薄葉材料の一面に感熱性孔版層を設け
てなる感熱性孔版原紙に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a heat-sensitive stencil paper having a heat-sensitive stencil layer provided on one side of a porous thin material.

〔従来の技術〕[Conventional technology]

感熱性孔版原紙は、従来、ポリ塩化ビニリデンフィルム
、ポリエチレンテレフタレート(PET)フィルムのよ
うな予め延伸やインフレーション法などにより製膜され
たフィルムを用いて、これに接着剤(粘着剤を含む)を
塗布しここの塗布面に多孔性薄葉材料をラミネートする
ことにより製造されている。
Conventionally, heat-sensitive stencil paper is produced by applying adhesive (including adhesive) to a film made in advance by stretching or inflation, such as polyvinylidene chloride film or polyethylene terephthalate (PET) film. It is manufactured by laminating a thin porous material onto the coated surface of the coating.

この方法で製造される感熱性孔版原紙は、前記のフィル
ムおよび接着剤層が一体となって感熱性孔版層を構成し
、これらを加熱により穿孔して製版されるものであり、
印刷にあたってはこの原紙をインクドラムに巻き付け、
多孔性薄葉材料側からインクを供給して印刷される。
The heat-sensitive stencil paper produced by this method is one in which the above-mentioned film and adhesive layer together constitute a heat-sensitive stencil layer, and the plate is made by perforating these by heating,
During printing, this base paper is wrapped around an ink drum,
Printing is performed by supplying ink from the porous thin material side.

ところで、このような感熱性孔版原紙においては、その
感熱性孔版層の厚みが厚くなると、印刷に際し多孔性薄
葉材料側から供給されるインクが通りにくくなるうえに
、加熱穿孔時にその周囲に熱溶融したポリマーが多く残
存して、製版精度が悪くなったり、印刷時にインクかに
じみやすくなり、これらのことが原因で高濃度でかつ鮮
明な印刷を行えず、印刷の感度および画質が低下してし
まう弊害がある。
By the way, in such a heat-sensitive stencil paper, when the thickness of the heat-sensitive stencil layer becomes thick, it becomes difficult for ink supplied from the porous thin material side to pass through during printing, and heat melting occurs around it during hot perforation. A large amount of the polymer remains, resulting in poor plate-making accuracy and ink smearing during printing, making it impossible to print with high density and clarity, and reducing printing sensitivity and image quality. There are negative effects.

このことから、感熱性孔版層の厚みはできるだけ薄い方
が望ましく、薄くすることにより製版精度が上がり、印
刷も容易となり、またそのために高粘度インクの使用も
可能となるなど、高濃度でかつ鮮明な印刷、つまりは感
度および画質の良好な高品質の印刷を行えるのである。
For this reason, it is desirable for the thickness of the heat-sensitive stencil layer to be as thin as possible. By making the thickness thinner, the precision of plate making increases and printing becomes easier. This also makes it possible to use high viscosity ink, resulting in high density and clear printing. This enables high-quality printing with good sensitivity and image quality.

しかるに、前記従来の感熱性孔版原紙は、感熱性孔版層
の薄層化に限界があり、印刷の高品質化を期待しうる2
μm以下、たとえば1μm程度の薄さにすることは困難
であった。
However, with the conventional heat-sensitive stencil paper, there is a limit to how thin the heat-sensitive stencil layer can be made, and it is difficult to make the heat-sensitive stencil layer thinner.
It has been difficult to make the thickness less than μm, for example, about 1 μm.

この理由は、ポリ塩化ビニリデンフィルムやPETフィ
ルムなどの製膜フィルムはその厚みがせいぜい2μm程
度までであって、これ以下の薄い製膜フィルムを安価に
入手することはその製膜技術上および需要量の面で困難
で、またかりに入手、できたとしてもこれを多孔性薄葉
材料に接着剤を用いて均一にラミネートすることが難し
いからである。また、他の理由として、上記の製膜フィ
ルムを多孔性薄葉材料に接着させるために、通常約0.
5〜3g/rdc固形分)の接着剤を必要とするため、
感熱性孔版層の全体厚みはそのぶんさらに厚くなるため
である。
The reason for this is that films such as polyvinylidene chloride film and PET film have a thickness of about 2 μm at most, and it is difficult to obtain films thinner than this at a low cost due to film-forming technology and demand. The reason for this is that it is difficult to obtain such a material at once, and even if it were possible to do so, it would be difficult to uniformly laminate it onto a porous thin sheet material using an adhesive. Another reason is that in order to adhere the above-mentioned membrane-formed film to the porous thin material, it is usually about 0.
5-3g/rdc solid content) of adhesive is required,
This is because the overall thickness of the heat-sensitive stencil layer becomes thicker accordingly.

そこで、この発明者らは、上記従来の感熱性孔版原紙の
問題点に鑑み、鋭意検討を加え・た結果、多孔性薄葉材
料上に設けるべき感熱性孔版層を熱可塑性ポリマーの塗
布層で構成させる、つまり上記の層を熱可塑性ポリマー
の塗布という手段で形成するようにすれば、前記従来の
製膜フィルムや接着剤を用いる場合の製膜技術、ラミネ
ート技術さらには経済性の面での問題が一切回避され、
また接着剤層に基づく薄層化の妨げもなくなって、従来
では困難であった2μm以下、通常0.1〜1゜5μm
程度の非常に薄い感熱性孔版層を容易に形成できるもの
であることを知り、これをこの発明の先行発明として既
に提案した。
In view of the above-mentioned problems with the conventional heat-sensitive stencil paper, the inventors conducted extensive studies and found that the heat-sensitive stencil layer to be provided on the porous thin material is composed of a coating layer of thermoplastic polymer. In other words, if the above-mentioned layer is formed by coating a thermoplastic polymer, there will be problems in terms of film-forming technology, lamination technology, and economic efficiency when using the conventional film-forming film or adhesive. is completely avoided,
In addition, there is no longer any hindrance to thinning the adhesive layer, which is difficult to achieve in the past.
It was found that a very thin heat-sensitive stencil layer can be easily formed, and this was already proposed as a prior invention of the present invention.

この先行発明に係る感熱性孔版原紙は1.感熱性孔版層
が前記従来のものとは異なって接着剤層を有しない熱可
塑性ポリマ一層(塗布層)単独からなるという独自構成
をとるもので、ポリマ一層の薄層化が容易なことから印
刷の高品質化を簡単に図れ、またその製造を安価に行え
るなどの多くの利点を有している。
The heat-sensitive stencil paper according to this prior invention has 1. Unlike the conventional stencil layer, the heat-sensitive stencil layer has a unique structure consisting of a single layer of thermoplastic polymer (coating layer) without an adhesive layer, and since it is easy to make the single layer of polymer thin, it is suitable for printing. It has many advantages, such as being able to easily improve the quality of the product and being able to manufacture it at low cost.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかるに、この発明者らの引き続く研究によれば、上記
の先行発明に係る感熱性孔版原紙においては、薄層化に
基づく印刷の高品質化などは確かに図れるものの、耐剛
性という面でやや不足する場合があり、印刷枚数の増加
とともに塗布層が劣化し、印刷物にカブリ(地汚れ)が
発生することが判った。
However, according to the inventors' continued research, although it is true that the heat-sensitive stencil paper according to the above-mentioned prior invention can achieve high printing quality based on thinner layers, it is somewhat lacking in stiffness resistance. It has been found that as the number of prints increases, the coating layer deteriorates and fog (background stains) occurs on the printed matter.

したがって、この発明は、上記先行発明をさらに改良し
、印刷枚数の増加による印刷物のカブリという問題のな
い、耐刷性の良好な感熱性孔版原紙を提供することを目
的としている。
Therefore, an object of the present invention is to further improve the above-mentioned prior invention, and to provide a heat-sensitive stencil paper having good printing durability and free from the problem of fogging of printed matter due to an increase in the number of printed sheets.

〔問題点を解決するための手段〕[Means for solving problems]

この発明者らは、上記の目的を達成するために鋭意検討
した結果、ポリマー塗布層を形成するための熱可塑性ポ
リマーとして多孔性薄葉材料の素材と同一または類似の
ポリマーを用いることにより、印刷枚数の増加による印
刷物のカブリという問題のない耐剛性に非常にすぐれた
感熱性孔版原紙が得られるものであることを知り、この
発明を完成するに至った。
As a result of intensive studies to achieve the above object, the inventors have found that by using a thermoplastic polymer that is the same as or similar to the material of the porous thin film material for forming the polymer coating layer, the number of print sheets can be increased. The present invention was completed based on the knowledge that it is possible to obtain a heat-sensitive stencil paper that has excellent rigidity resistance and does not have the problem of fogging of printed matter due to an increase in .

すなわち、この発明は、多孔性薄葉材料の一面に感熱性
孔版層として熱可塑性ポリマーを主体とした塗布層を設
けてなる感熱性孔版原紙において、上記の熱可塑性ポリ
マーが上記の多孔性薄葉材料の素材と同一または類似の
ポリマーを含むことを特徴とする感熱性孔版原紙に係る
ものである。
That is, the present invention provides a heat-sensitive stencil paper in which a coating layer mainly composed of a thermoplastic polymer is provided as a heat-sensitive stencil layer on one side of a porous thin material, in which the thermoplastic polymer This invention relates to a heat-sensitive stencil paper characterized by containing the same or similar polymer as the material.

〔発明の構成・作用〕[Structure and operation of the invention]

この発明において使用する多孔性薄葉材料としては、マ
ニラ麻、こうぞ、みつまたなどの天然繊維、ポリエステ
ル、ナイロレなどの合成繊維およびこれらを混抄してな
る紙または不織布で坪量5〜15g/rrfのもの、あ
るいはポリエステル繊維。
The porous thin material used in this invention includes natural fibers such as manila hemp, kozo, and mitsumata, synthetic fibers such as polyester and nylon, and paper or nonwoven fabric made by mixing these materials with a basis weight of 5 to 15 g/rrf. , or polyester fiber.

絹のスクリーン紗などが使用できる。Silk screen gauze etc. can be used.

この発明において使用する熱可塑性ポリマーとしては、
上記の多孔性薄葉材料の素材と同一または類似のポリマ
ー、たとえば多孔性薄葉材料が天然繊維を素材とするも
のであればニトロセルロース、エチルセルロース、セル
ロースアセテートブチレートなどのセルロース系樹脂が
、ポリエステル繊維を素材とするものであればポリエス
テル系樹脂が、ポリプロピレン繊維を素材とするもので
あれば塩素化ポリプロピレンなどのポリプロピレン系樹
脂が、それぞれ用いられる。
The thermoplastic polymer used in this invention includes:
A polymer that is the same as or similar to the material of the porous thin material mentioned above, for example, if the porous thin material is made of natural fibers, a cellulose resin such as nitrocellulose, ethyl cellulose, or cellulose acetate butyrate can be used to make the polyester fiber. If the material is used, a polyester resin is used, and if the material is polypropylene fiber, a polypropylene resin such as chlorinated polypropylene is used.

このような多孔性薄葉材料の素材と同一または類似のポ
リマーは、一種であっても二種以上であってもよい、ま
た、多孔性薄葉材料が二種以上の素材の混抄からなるも
のでは、その素材のうちの10重量%以上、好適には3
0重量%以上を占める素材と同一または類似のポリマー
を使用する。
The polymers that are the same as or similar to the material of the porous thin-sheet material may be one type or two or more types, and if the porous thin-sheet material is a mixture of two or more types of materials, 10% or more by weight of the material, preferably 3%
Use a polymer that is the same or similar to the material that accounts for 0% or more by weight.

一方、このような多孔性薄葉材料の素材と同一または類
似のポリマーは、これ単独で使用できるほか、このポリ
マーとともに多孔性薄葉材料の素材と同一でもまた類似
することもない全く異種の他の熱可塑性ポリマーと併用
することもでき、この場合多孔性薄葉材料の素材と同一
または類似のポリマーが全体の10重量%以上、好適に
は30重量%以上を占めるような割合とすればよい、な
お、上記の他の熱可塑性ポリマーには、エチレン−酢酸
ビニル共重合体、ブチラール系樹脂、アクリル系樹脂な
どの公知の各種ポリマーが包含されるものである。
On the other hand, a polymer that is the same as or similar to the material of the porous thin-sheet material can be used alone, or it can be used together with other completely different thermal materials that are neither the same nor similar to the material of the porous thin-sheet material. It can also be used in combination with a plastic polymer, and in this case, the proportion may be such that the polymer that is the same as or similar to the material of the porous thin sheet material accounts for 10% by weight or more, preferably 30% by weight or more of the total weight. The other thermoplastic polymers mentioned above include various known polymers such as ethylene-vinyl acetate copolymer, butyral resin, and acrylic resin.

この発明において使用する上記の如き各種の熱可塑性ポ
リマーの分子量は、特に限定されるものではないが、一
般には平均分子量が数万〜数十万の範囲にあるのが、塗
膜性や耐剛性などの面で好ましい。
The molecular weight of the above-mentioned thermoplastic polymers used in this invention is not particularly limited, but in general, the average molecular weight is in the range of tens of thousands to hundreds of thousands because of its coating properties and stiffness resistance. It is preferable in terms of

この発明においては、上記の熱可塑性ポリマーを多孔性
薄葉材料の一面に塗布層として設けるものであるが、そ
の際塗布層中に酸化防止剤、滑剤、可塑剤、帯電防止剤
などの各種の添加剤を必要に応じて含ませるようにして
もよい。これら添加剤の含量は塗布層全体の50重量%
以下とされる。
In this invention, the above-mentioned thermoplastic polymer is provided as a coating layer on one surface of a porous thin sheet material, and various additives such as antioxidants, lubricants, plasticizers, and antistatic agents are added to the coating layer. An agent may be included as necessary. The content of these additives is 50% by weight of the entire coating layer.
The following shall apply.

すなわち、塗布層は1.熱可塑性ポリマー単独からなる
ものだけでなく、これに上記の添加剤が適量含まれたも
のであってよいのである。
That is, the coating layer is 1. The thermoplastic polymer may not only consist of a single thermoplastic polymer, but may also contain an appropriate amount of the above-mentioned additives.

このような塗布層からなる感熱性孔版層の形成には、種
々の方法が考えられる。しかし、前記の熱可塑性ポリマ
ーのほとんどが水に相溶しない有機溶剤に25℃下で少
なくとも1重量%可溶、なポリマーであることから、こ
の熱可塑性ポリマーを上記の有機溶剤に1重量%以上溶
解させた溶液を使用した以下に述べる方法を採用するの
が最も好ましい。この方法によれば、多孔性薄葉材料へ
の熱可塑性ポリマーの浸透や塗布層にフィッシュアイな
どの塗膜欠陥を生じさせることなく薄くて均一な塗布層
を簡便に形成できるからである。
Various methods can be considered for forming a heat-sensitive stencil layer consisting of such a coating layer. However, since most of the thermoplastic polymers mentioned above are polymers that are soluble at 25°C in an amount of at least 1% by weight in organic solvents that are incompatible with water, the thermoplastic polymers are soluble in water-incompatible organic solvents at least 1% by weight. Most preferably, the method described below using a dissolved solution is employed. This is because, according to this method, a thin and uniform coating layer can be easily formed without infiltrating the thermoplastic polymer into the porous thin sheet material and without causing coating film defects such as fish eyes in the coating layer.

この好ましい方法とは、多孔性薄葉材料の空隙部分に水
を充分に充填する工程と、この含水多孔性薄葉材料の一
面に水に相溶しない有機溶剤とこれに1重量%以上溶解
された熱可塑性ポリマーと要すれば前記した添加剤を含
む溶液を塗布する工程と、さらにこの塗布後乾燥して上
記の有機溶剤および水を順次除去する工程とからなるも
のである。
This preferred method includes a step of sufficiently filling the voids of the porous thin sheet material with water, and applying an organic solvent that is incompatible with water to one side of the water-containing porous thin sheet material and a heat solution containing at least 1% by weight of the water-containing organic solvent. The process consists of a step of applying a solution containing a plastic polymer and, if necessary, the additives mentioned above, and a step of drying after this application to sequentially remove the above-mentioned organic solvent and water.

このように、多孔性薄葉材料に水を充填したうえで水に
相溶しない有機溶剤に溶解させた熱可塑性ポリマーの溶
液を塗布すると、多孔性薄葉材料の空隙部分に水が充填
されているので、塗布した上記溶液が空隙部分に浸透す
ることなく層状に形成され、これを乾燥することによっ
て多孔性薄葉材料の表面に2μm以下、通常0.1〜1
.5μmの極薄でかつフィッシュアイなどの塗膜欠陥の
ない均一なポリマー塗布層を形成できるものである。
In this way, when a porous thin sheet material is filled with water and then a solution of a thermoplastic polymer dissolved in an organic solvent that is incompatible with water is applied, the voids in the porous thin sheet material are filled with water. The applied solution is formed into a layer without penetrating into the voids, and by drying it, it forms a layer on the surface of the porous thin material with a thickness of 2 μm or less, usually 0.1 to 1 μm.
.. It is possible to form a uniform polymer coating layer that is as thin as 5 μm and free from coating defects such as fish eyes.

しかも、多孔性薄葉材料表面とポリマー塗布層とは、同
一または類似の材料を含む親和性に非常にすぐれたもの
であることから、両者の界面部分において物理的、化学
的に精舎して強固に接合したものとなる。
Moreover, since the surface of the porous thin sheet material and the polymer coating layer have very good affinity as they contain the same or similar materials, the interface between the two can be physically and chemically strengthened. It becomes a joined product.

上記の方法において、多孔性薄葉材料への水の充填は、
ロールコーティング法、ディッピング法などの各種の方
法で行うことができ、またポリマー溶液の塗布は、アプ
リケーターコート、ファウンテンコート、グイコートな
どの方法を採用して行うことができる。これらの方法自
体は特に限定されるものではない。
In the above method, the filling of water into the porous thin film material is
This can be done by various methods such as roll coating and dipping, and the polymer solution can be applied by using applicator coating, fountain coating, goo coating, and the like. These methods themselves are not particularly limited.

水に相溶しない有機溶剤としては、ヘキサン、シクロヘ
キサン、シクロヘキセン、ベンゼン、トルエン、キシレ
ン、クロロホルム、酢酸エチル、メチルエチルケトン、
メチルイソブチルケトンなどの多くの有機溶剤が挙げら
れる。これらの有機溶剤の一種または二種以上に熱可塑
性ポリマーを溶解させ、また要すれば前記した添加剤を
加えるが、その際のポリマー濃度は、少なくとも1重量
%、通常は2〜10重量%程度となるようにするのが薄
くて均一な塗布層を形成するうえで望ましいものである
Organic solvents that are incompatible with water include hexane, cyclohexane, cyclohexene, benzene, toluene, xylene, chloroform, ethyl acetate, methyl ethyl ketone,
Many organic solvents may be mentioned, such as methyl isobutyl ketone. The thermoplastic polymer is dissolved in one or more of these organic solvents, and if necessary, the above-mentioned additives are added, but the polymer concentration at this time is at least 1% by weight, usually about 2 to 10% by weight. It is desirable to form a thin and uniform coating layer.

塗布後の乾燥条件は、有機溶剤の種類により異なるが、
通常は60〜120℃で1〜10分間程度とすればよい
、この乾燥により、まず塗布層中の有機溶剤が揮散され
、ついで多孔性薄葉材料に充填された水が揮散除去され
ることになる。
Drying conditions after application vary depending on the type of organic solvent, but
Normally, it is sufficient to dry at 60 to 120°C for about 1 to 10 minutes.During this drying process, the organic solvent in the coating layer is first volatilized, and then the water filled in the porous thin material is volatilized and removed. .

なお、塗布層の形成方法どしては、上記方法のほか、た
とえば熱可塑性ポリマーを多孔性薄葉材料の一面に直接
溶融塗布する方法、剥離紙上に熱可塑性ポリマーの溶液
を塗布したのち、これを多孔性薄葉材料の一面に接着剤
を用いることなく熱転着させる方法などもある。ただし
、これらの場合、多孔性薄葉材料への熱可塑性ポリマー
の浸透や塗布層にフィッシュアイなどの塗膜欠陥が生じ
ることのないように、溶融塗布や熱転着のための条件を
適正に選択すべきである。
In addition to the above-mentioned method, the coating layer can be formed by, for example, melting and coating a thermoplastic polymer directly on one surface of a porous thin sheet material, or coating a solution of a thermoplastic polymer on a release paper and then applying the solution. There is also a method of heat-transferring one side of a porous thin sheet material without using an adhesive. However, in these cases, the conditions for melt application and thermal transfer must be selected appropriately to prevent the thermoplastic polymer from penetrating into the porous thin material and to prevent coating defects such as fish eyes from occurring in the applied layer. Should.

このようにして得られるこの発゛明の感熱性孔版原紙は
、感熱性孔版層としてのポリマー塗布層の表面に製版時
の接着を防止するための離型層や、熱ヘッドとのスティ
ッキングを防止するためのスティッキング防止層を必要
に応じて設けることができる。
The heat-sensitive stencil paper of this invention thus obtained has a release layer on the surface of the polymer coating layer as the heat-sensitive stencil layer to prevent adhesion during plate making, and a release layer to prevent sticking with the thermal head. An anti-sticking layer can be provided as necessary.

この発明の感熱性孔版原紙を用いて製版および印刷する
には、常法に準じて行えばよい。たとえば製版は、感熱
性孔版層面にオフセット印刷原稿を重ね市販の感熱孔版
製版機を用いて加熱穿孔すればよく、また印刷は、市販
の孔版印刷機を用いて上記製版後の原紙をインクドラム
に巻きつけ、多孔性薄葉材料側からインクを供給しなが
ら印刷すればよい。
Plate making and printing using the heat-sensitive stencil paper of the present invention may be carried out according to conventional methods. For example, plate making can be done by placing an offset printing original on the surface of a heat-sensitive stencil layer and perforating it with heat using a commercially available heat-sensitive stencil maker, and for printing, using a commercially available stencil printing machine, the base paper after the stencil printing is transferred to an ink drum. It is sufficient to wrap the material around the porous thin sheet material and print while supplying ink from the porous thin material side.

〔発明の効果〕〔Effect of the invention〕

この発明の感熱性孔版原紙は、多孔性薄葉材料の一面に
この材料の素材と同一または類似のポリマーを含む熱可
塑性ポリマーを主体とした塗布層を設けて感熱性孔版層
を構成させるようにしたことにより、感熱性孔版層の薄
層化に基づく印刷の高品質化など先行発明における前記
利点を全く失うことなく、耐剛性を改善でき、印刷枚数
の増加による印刷物のカブリの発生という問題を回避す
ることができる。
The heat-sensitive stencil paper of the present invention has a heat-sensitive stencil layer formed by providing a coating layer mainly composed of a thermoplastic polymer containing a polymer identical or similar to the material of the porous thin material on one side of the porous thin material. As a result, rigidity resistance can be improved without completely losing the advantages of the prior invention, such as high quality printing due to thinning of the heat-sensitive stencil layer, and the problem of fogging of printed matter caused by an increase in the number of printed sheets can be avoided. can do.

〔実施例〕〔Example〕

以下に、この発明の実施例を記載してより具体的に説明
する。
EXAMPLES Below, examples of the present invention will be described in more detail.

実施例1 坪量9g/rrrのボリエ、ステル繊維を素材とする多
孔性薄葉紙に、ディッピング法により水を充填したのち
、その表面に熱可塑性ポリエステル樹脂(平均分子量1
5.000〜20,000)の2重量%メチルイソブチ
ルケトン溶液をスリット厚50μmのアプリケーターで
塗布し、ついで80℃で1分間乾燥を行い、感熱性孔版
層として約1μm厚の熱可塑性ポリエステル樹脂からな
る塗布層を有する感熱性孔版原紙を得た。この感熱性孔
版原紙の塗布層面に離型層としてシリコーンオイルを0
.1g/rrrとなるよ゛うにワイヤーバーコードを行
つた。
Example 1 A porous thin paper made of borie or stell fiber with a basis weight of 9 g/rrr was filled with water by a dipping method, and then a thermoplastic polyester resin (average molecular weight 1
A 2% by weight methyl isobutyl ketone solution (5.000 to 20,000) was applied using an applicator with a slit thickness of 50 μm, and then dried at 80° C. for 1 minute, and a thermoplastic polyester resin with a thickness of about 1 μm was applied as a heat-sensitive stencil layer. A heat-sensitive stencil paper having a coating layer was obtained. No amount of silicone oil is applied as a release layer to the coated layer surface of this heat-sensitive stencil paper.
.. Wire barcoding was performed to obtain 1 g/rrr.

実施例2 多孔性薄葉材料としてポリエステル繊維50重量%とマ
ニラ麻50重量%とを混抄してなる坪量9 g/rdの
多孔性薄葉紙を使用した以外は、実施例1と同様の方法
で感熱性孔版原紙を作製し、実施例1と同様のシリコー
ンコートを行った。
Example 2 Heat-sensitive paper was prepared in the same manner as in Example 1, except that a porous thin paper with a basis weight of 9 g/rd made by mixing 50% by weight of polyester fibers and 50% by weight of Manila hemp was used as the porous thin material. A stencil paper was prepared and coated with silicone in the same manner as in Example 1.

実施例3 多孔性薄葉材料として坪量9g/rdのポリプロピレン
繊維を素材とする多孔性薄葉紙を使用し、ポリマー溶液
として塩素化ポリプロピレン(塩素含有率26重量%、
平均分子量150.000)の2重量%トルエン溶液を
使用した以外は、実施例1と同様の方法で感熱性孔版原
紙を作製し、実施例1と同様のシリコーンコートを行っ
た。
Example 3 Porous thin paper made of polypropylene fibers with a basis weight of 9 g/rd was used as the porous thin paper material, and chlorinated polypropylene (chlorine content 26% by weight,
A heat-sensitive stencil paper was prepared in the same manner as in Example 1, except that a 2% by weight toluene solution having an average molecular weight of 150.000) was used, and silicone coating was performed in the same manner as in Example 1.

実施例4 多孔性薄葉材料として坪量9 g/rdのみつまたを素
材とする多孔性薄葉紙を使用し、ポリマー溶液としてエ
チルセルロー°ス(エトキシル含有率48重量%、平均
分子量100.000)の2重量%トルエン溶液を使用
した以外は、実施例1と同様の方法で感熱性孔版原紙を
作製し、実施例1と同様のシリコーンコートを行った。
Example 4 A porous thin paper made from Mitsumata with a basis weight of 9 g/rd was used as the porous thin material, and ethyl cellulose (ethoxyl content 48% by weight, average molecular weight 100.000) was used as the polymer solution. A heat-sensitive stencil paper was prepared in the same manner as in Example 1, except that a wt % toluene solution was used, and silicone coating was performed in the same manner as in Example 1.

実施例5 多孔性薄葉材料として坪ff19 glrdのみつまた
を素材とする多孔性薄葉紙を使用し、ポリマー溶液とし
てセルロースアセテートブチレート(アセチル含有率2
.0重量%、ブチリル含有率53重量%、平均分子13
0,000)とエチレン−アクリル酸エチル共重合体(
アクリル酸エチル含有率25重量%、平均分子量150
,000)との重量比8:2の混合樹脂の2重量%トル
エン/メチルイソブチルケトン溶液を使用した以外は、
実施例1と同様の方法で感熱性孔版原紙を作製し、実施
例1と同様のシリコーンコートを行った。
Example 5 A porous thin paper made of tsubo ff19 glrd was used as the porous thin paper material, and cellulose acetate butyrate (acetyl content 2) was used as the polymer solution.
.. 0% by weight, butyryl content 53% by weight, average molecular weight 13
0,000) and ethylene-ethyl acrylate copolymer (
Ethyl acrylate content 25% by weight, average molecular weight 150
,000) in a weight ratio of 8:2, except that a 2 wt.
A heat-sensitive stencil paper was prepared in the same manner as in Example 1, and was coated with silicone in the same manner as in Example 1.

比較例1 多孔性薄葉材料として坪fi9 g/rrrのマニラ麻
を素材とする多孔性薄葉紙を使用した以外は、実施例1
と同様の方法で感熱性孔版原紙を作製し、実施例1と同
様のシリコーンコートを行った。
Comparative Example 1 Example 1 except that porous thin paper made of Manila hemp with a tsubo fi of 9 g/rrr was used as the porous thin paper material.
A heat-sensitive stencil paper was prepared in the same manner as in Example 1, and was coated with silicone in the same manner as in Example 1.

比較例2 ポリマー溶液としてエチルセルロース(実施例4で用い
たものと同じ)の2重量%トルエン溶液を使用した以外
は、実施例1と同様の方法で感熱性孔版原紙を作製し、
実施例1と同様のシリコーンコートを行った。
Comparative Example 2 A heat-sensitive stencil paper was produced in the same manner as in Example 1, except that a 2% by weight toluene solution of ethyl cellulose (the same as that used in Example 4) was used as the polymer solution.
The same silicone coating as in Example 1 was performed.

比較例3 ポリマー溶液としてセルロースアセテートブチレート(
実施例5で用いたものと同じ)とエチレン−アクリル酸
エチル共重合体(実施例5で用いたものと同じ)との重
量比8:2の混合樹脂の2重量%トルエン/メチルイソ
ブチルケトン溶液を使用した以外は、実施例1と同様の
方法で感熱性孔版原紙を作製し、実施例1と同様のシリ
コーンコートを行った。
Comparative Example 3 Cellulose acetate butyrate (
2% by weight toluene/methyl isobutyl ketone solution of mixed resin of 8:2 weight ratio of ethylene-ethyl acrylate copolymer (same as used in Example 5) and ethylene-ethyl acrylate copolymer (same as used in Example 5) A heat-sensitive stencil paper was prepared in the same manner as in Example 1, except that 1 was used, and the same silicone coating as in Example 1 was applied.

比較例4 多孔性薄葉材料として坪量9 g/rrrのみつまたを
素材とする多孔性薄葉紙を使用し、ポリマー溶液として
塩素化ポリプロピレン(実施例3で用いたものと同じ)
の2重量%トルエン溶液を使用した以外は、実施例1と
同様の方法で感熱性孔版原紙を作製し、実施例1と同様
のシリコーンコートを行った。
Comparative Example 4 A porous thin paper made of a material with a basis weight of 9 g/rrr was used as the porous thin material, and chlorinated polypropylene (the same as that used in Example 3) was used as the polymer solution.
A heat-sensitive stencil paper was prepared in the same manner as in Example 1, except that a 2% by weight toluene solution of 1 was used, and silicone coating was performed in the same manner as in Example 1.

上記の実施例1〜5および比較例1〜4の感熱性孔版原
紙の耐剛性を調べるために、12ドツト/flの熱記録
ヘッドを用いてその発熱素子が各原紙の塗布層面に当た
るようにセットし、印加電圧25V、印加時間2ms 
e cの印字条件で製版し、ついで孔版印刷機(理想科
学工業社製の商品名AP7200)で印刷を行った。
In order to examine the rigidity resistance of the heat-sensitive stencil papers of Examples 1 to 5 and Comparative Examples 1 to 4 above, a 12 dot/fl thermal recording head was used and set so that the heating element was in contact with the coated layer surface of each base paper. , applied voltage 25V, application time 2ms
A plate was made under the printing conditions of e and c, and then printing was performed using a stencil printing machine (trade name: AP7200, manufactured by Riso Kagaku Kogyo Co., Ltd.).

その結果、比較例1〜4の原紙ではいずれも印刷枚数の
増加とともにカブリが発生し、100枚印刷した時点で
全面にカブリが生じたが、実施例1〜5の原紙ではいず
れも印刷枚数の増加によるカブリの発生はみられず、実
施例2,5で1,000枚、実施例1. 3. 4の原
紙で5,000枚印刷したのちもカブリは全(生じなか
った。これらの結果より、この発明の感熱性孔版原紙は
耐刷性にすぐれたものであることが明らかである。
As a result, in all of the base papers of Comparative Examples 1 to 4, fogging occurred as the number of printed sheets increased, and fogging occurred on the entire surface after printing 100 sheets, but in all of the base papers of Examples 1 to 5, fogging occurred as the number of printed sheets increased. No fogging was observed due to the increase, and Examples 2 and 5 produced 1,000 sheets, and Example 1. 3. Even after printing 5,000 sheets using the base paper No. 4, no fogging occurred at all. From these results, it is clear that the heat-sensitive stencil paper of the present invention has excellent printing durability.

Claims (1)

【特許請求の範囲】[Claims] (1)多孔性薄葉材料の一面に感熱性孔版層として熱可
塑性ポリマーを主体とした塗布層を設けてなる感熱性孔
版原紙において、上記の熱可塑性ポリマーが上記の多孔
性薄葉材料の素材と同一または類似のポリマーを含むこ
とを特徴とする感熱性孔版原紙。
(1) In a heat-sensitive stencil paper in which a coating layer mainly composed of a thermoplastic polymer is provided as a heat-sensitive stencil layer on one side of a porous thin-sheet material, the thermoplastic polymer is the same as the material of the porous thin-sheet material. or a heat-sensitive stencil paper characterized by containing a similar polymer.
JP11969687A 1987-05-15 1987-05-15 Thermal stencil paper Pending JPS63283994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11969687A JPS63283994A (en) 1987-05-15 1987-05-15 Thermal stencil paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11969687A JPS63283994A (en) 1987-05-15 1987-05-15 Thermal stencil paper

Publications (1)

Publication Number Publication Date
JPS63283994A true JPS63283994A (en) 1988-11-21

Family

ID=14767804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11969687A Pending JPS63283994A (en) 1987-05-15 1987-05-15 Thermal stencil paper

Country Status (1)

Country Link
JP (1) JPS63283994A (en)

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