JPH0571941B2 - - Google Patents
Info
- Publication number
- JPH0571941B2 JPH0571941B2 JP63126398A JP12639888A JPH0571941B2 JP H0571941 B2 JPH0571941 B2 JP H0571941B2 JP 63126398 A JP63126398 A JP 63126398A JP 12639888 A JP12639888 A JP 12639888A JP H0571941 B2 JPH0571941 B2 JP H0571941B2
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive resin
- printing
- pattern
- flexographic printing
- plate
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 48
- 239000011347 resin Substances 0.000 claims description 39
- 229920005989 resin Polymers 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 28
- 238000011161 development Methods 0.000 claims description 14
- 239000002356 single layer Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 31
- 229920001971 elastomer Polymers 0.000 description 17
- 239000005060 rubber Substances 0.000 description 16
- -1 polyethylene terephthalate Polymers 0.000 description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 description 8
- 239000005020 polyethylene terephthalate Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000011342 resin composition Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- QBKVWLAQSQPTNL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate;styrene Chemical compound CCOC(=O)C(C)=C.C=CC1=CC=CC=C1 QBKVWLAQSQPTNL-UHFFFAOYSA-N 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920002589 poly(vinylethylene) polymer Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical class C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 229940096522 trimethylolpropane triacrylate Drugs 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Photosensitive Polymer And Photoresist Processing (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はフレキソ印刷用版材の製版方法に関
し、さらに詳しくは、支持体上に感光性樹脂層を
設けたフレキソ印刷用版材に、活性光線を選択的
に露光したのち、未露光部を剥離除去することに
より、現像処理時間が短く、かつ現像液の疲労の
少ない製版方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for making a plate material for flexographic printing, and more specifically, a method for making a plate material for flexographic printing, in which a photosensitive resin layer is provided on a support, by irradiating active light. The present invention relates to a plate-making method that shortens development processing time and reduces developer fatigue by peeling off and removing unexposed areas after selective exposure.
従来の技術
近年、感光性樹脂版を用いたフレキソ印刷版が
開発され、実用化されているが、このものは通常
支持体上にゴム弾性を有するホトポリマーから成
る感光性樹脂層を設け、ネガフイルムを介して活
性光線を露光したのち、未露光部分を現像液で溶
解除去するという方法によつて、作成される。こ
の方法は、比較的簡単な工程で印刷性の高いフレ
キソ印刷版が得られるという利点があることか
ら、現在フレキソ印刷分野において広く使用され
るようになつてきている。Conventional technology In recent years, flexographic printing plates using photosensitive resin plates have been developed and put into practical use, but these usually have a photosensitive resin layer made of a photopolymer having rubber elasticity on a support, and are used to print negative films. It is created by exposing the photosensitive material to actinic rays through a wafer, and then dissolving and removing the unexposed portions with a developer. This method has the advantage that a flexographic printing plate with high printability can be obtained through a relatively simple process, so it is currently becoming widely used in the field of flexographic printing.
しかしながら、このような方法によつて得られ
た感光性樹脂版を用いたフレキソ印刷版を使用し
ても、例えば段ボールなどのように表面が粗く、
波状である被印刷体に印刷を行う場合には、段ム
ラ、インキの泳ぎなどが発生しやすく、良質の印
刷物が得られにくいという問題が生じる。この原
因としては、表面が粗く、波状を呈している被印
刷体表面の凹部にまでムラなく印刷するために
は、印圧を通常より多少高くしなければならず、
その結果、凸部において必要以上に印圧がかか
り、印刷性が悪くなることや、段ボール類は表面
が柔らかいために、均一な印圧をかけることが難
かしいことなどが挙げられる。 However, even if a flexographic printing plate using a photosensitive resin plate obtained by such a method is used, the surface is rough, as is the case with cardboard, for example.
When printing on a wavy printing material, unevenness in the printing process, ink swimming, etc. are likely to occur, making it difficult to obtain high-quality printed matter. The reason for this is that in order to print evenly into the recesses on the surface of the printing material, which has a rough and wavy surface, the printing pressure must be slightly higher than usual.
As a result, more printing pressure than necessary is applied to the convex portions, resulting in poor printability, and since the surface of cardboard is soft, it is difficult to apply uniform printing pressure.
このような問題を解消するためには、その印刷
版の膜厚精度を高め、かつより高いゴム弾性を有
する版を使用しなければならず、これらの考えに
基づいて開発されたフレキソ印刷版もいくつか提
案されている。例えば、その１つとして、フレキ
ソ印刷用感光性樹脂層の下地材料にゴム材を使用
した版材が開発されている。 In order to solve these problems, it is necessary to improve the film thickness accuracy of the printing plate and use a plate with higher rubber elasticity, and flexographic printing plates developed based on these ideas also Some suggestions have been made. For example, as one of these, a plate material has been developed in which a rubber material is used as a base material for a photosensitive resin layer for flexographic printing.
このものは、そのゴム材上の感光性樹脂層に活
性光線を選択的に露光したのち、現像処理を施し
て、ゴム材上に感光性樹脂のパターンを形成させ
ゴム材に切り込みを入れるなどして、該ゴム材を
選択的に剥がしとることにより、ゴム材層と感光
性樹脂層との２層から成る、ゴム弾性が高く、か
つレリーフ深度のあるフレキソ印刷版を与えるこ
とができる。 This product involves selectively exposing the photosensitive resin layer on the rubber material to actinic rays, and then developing it to form a pattern of photosensitive resin on the rubber material and making cuts in the rubber material. Then, by selectively peeling off the rubber material, it is possible to provide a flexographic printing plate having high rubber elasticity and relief depth, which is composed of two layers: a rubber material layer and a photosensitive resin layer.
しかしながら、このようにして得られた印刷版
は、比較的高いゴム弾性を有するものの、下地材
料としてゴム材が用いられているために、膜厚精
度に劣るのを免れないという欠点を有している。 However, although the printing plate obtained in this way has relatively high rubber elasticity, it has the disadvantage that the film thickness accuracy is inevitably inferior because a rubber material is used as the base material. There is.
他方、膜厚を７mm程度にしたフレキソ印刷用感
光性樹脂版材が開発されている。このものから得
られたフレキソ印刷版は、厚膜の感光性樹脂のみ
から成つていて、前記の下地材にゴム材を使用し
たものに比べて、膜厚精度が高く、かつ高いゴム
弾性を有している。しかしながら、フレキソ印刷
用のレリーフパターンの断面形状は、ほぼ裾広台
形状とすることが望まれ、そのためには、前記版
材を用いる場合、通常現像処理に際してマスキン
グ工程が必須とされることから、製版工程が複雑
となり作業に熟練を要するといつた問題が生じ
る。また、該版材においては、感光性樹脂層が厚
膜であるために、現像処理において溶解除去され
る樹脂量が多くて、現像処理時間が不当に長くな
る上に、現像液の疲労が速いなどの欠点がある。 On the other hand, a photosensitive resin plate material for flexographic printing with a film thickness of about 7 mm has been developed. The flexographic printing plate obtained from this product is made only of a thick film of photosensitive resin, and has higher film thickness accuracy and higher rubber elasticity than those using rubber material as the base material. have. However, it is desired that the cross-sectional shape of the relief pattern for flexographic printing be approximately a wide trapezoidal shape, and for this purpose, when using the above-mentioned plate material, a masking step is normally required during the development process. Problems arise in that the plate-making process becomes complicated and requires skill. In addition, since the photosensitive resin layer of the plate material is thick, a large amount of resin is dissolved and removed during the development process, resulting in an unreasonably long development process time and rapid fatigue of the developer. There are drawbacks such as.
そこで、このような欠点を改良するために、例
えば同一現像液で未露光部を溶解除去しうる同一
又は異なる感光性樹脂層を剥離可能な２層に積層
して成る感光層と、支持体とから構成されたフレ
キソ印刷用版材に、活性光線を選択的に露光した
のち、露光部のパターンに沿つて縁辺輪郭部を設
けて切り込みを入れ、次いでその切り込み部分に
従つて感光層上層の未露光部のみを剥離したの
ち、現像処理を行う方法が提案されている（特開
昭61−53645号公報）。 Therefore, in order to improve such drawbacks, for example, a photosensitive layer formed by laminating two peelable layers of the same or different photosensitive resin layers whose unexposed areas can be dissolved and removed with the same developer, and a support. After selectively exposing the flexographic printing plate material to actinic light, a cut is made along the pattern of the exposed area with an edge contour, and then an unfinished portion of the upper photosensitive layer is cut along the cut portion. A method has been proposed in which development is performed after only the exposed areas are peeled off (Japanese Patent Application Laid-open No. 53645/1983).
しかしながら、この方法においても、かなりの
量の樹脂を溶解除去しなければならず現像液の疲
労が速いという問題が残る。 However, even with this method, there remains the problem that a considerable amount of resin must be dissolved and removed, resulting in rapid fatigue of the developer.
また、感光性樹脂を２層に積層するため、製造
に手間がかかるのを免れない上、得られた印刷版
は版厚が厚いことから、重くて取り扱いに不便で
あるなどの問題がある。 Furthermore, since the photosensitive resin is laminated in two layers, it is inevitable that the manufacturing process is time-consuming, and the resulting printing plate is thick, making it heavy and inconvenient to handle.
発明が解決しようとする課題
本発明は、このような事情のもとで、現像処理
時間が短く、かつ現像液の疲労が少ない上、得ら
れた印刷版材の重量を小さくしうる上に、未露光
部を剥がす際に従来のように部分的に露光部が剥
がれるということがなく、確実に未露光部を剥離
しうるとともに、裾広台形状の安定で耐刷性に優
れたレリーフ形状を有するフレキソ印刷用版材の
製版方法を提供することを目的としてなされたも
のである。Problems to be Solved by the Invention Under these circumstances, the present invention has the advantage of shortening the development processing time, reducing developer fatigue, and reducing the weight of the obtained printing plate material. When removing the unexposed area, the exposed area does not peel off partially as in the conventional method, and the unexposed area can be reliably peeled off, and the relief shape has a stable wide-legged trapezoid shape and has excellent printing durability. The purpose of this invention is to provide a method for making a plate material for flexographic printing having the following methods.
課題を解決するための手段
本発明者らは前記目的を達成するために鋭意研
究を重ねた結果、該版材にパターン形成露光を施
したのち、未露光部のみを現像処理前に特定の手
段によつて剥離除去することにより、その目的を
達成しうることを見い出し、この知見に基づいて
本発明を完成するに至つた。Means for Solving the Problems In order to achieve the above object, the present inventors have conducted intensive research and found that after pattern-forming exposure is applied to the plate material, only the unexposed areas are processed using a specific method before development. The inventors have discovered that the objective can be achieved by peeling and removing the material, and have completed the present invention based on this knowledge.
すなわち、本発明は、支持体上に感光性樹脂単
層を設けて成るフレキソ印刷用版材に活性光線を
選択的に露光したのち、露光部のパターンに沿つ
て縁辺輪郭部を設けてパターン側の断面が裾広台
形状になるように斜めに切り込みを入れ、次いで
その切り込み部分に従つて、未露光部のみを支持
体から剥離したのち、現像処理を行うことを特徴
とするフレキソ印刷用版材の製版方法を提供する
ものである。 That is, in the present invention, after a flexographic printing plate material comprising a single layer of photosensitive resin is provided on a support is selectively exposed to actinic rays, an edge contour is provided along the pattern of the exposed area, and the edge contour is formed on the pattern side. A flexographic printing plate, characterized in that a cut is made diagonally so that the cross section has a wide-bottomed trapezoidal shape, and then only the unexposed area is peeled from the support according to the cut portion, and then developed. The present invention provides a method for making plates for materials.
以下、本発明を詳細に説明する。 The present invention will be explained in detail below.
本発明におけるフレキソ印刷用版材の感光性樹
脂層に用いられる感光性樹脂組成物としては、例
えば(A)ポリイソブレン、ポリブタジエン、イソプ
レン−スチレン共重合体、スチレン−ブタジエン
ブロツク共重合体、アクリロニトリル−ブタジエ
ン共重合体、ポリウレタンなどの合成ゴム系又は
天然ゴム系のゴム弾性を有する高分子化合物、(B)
多官能アクリレートなどの光重合性単量体、(C)ベ
ンゾイン誘導体などの光重合反応開始剤などを主
成分とするものが挙げられる。このような感光性
樹脂組成物を用いたフレキソ印刷用版材の具体例
としては、サイレル（商品名、デユポン社製）、
ルナフレツクス（商品名、日本ペイント社製）エ
ラスロン（商品名、東京応化工業社製）ナイロフ
レツクスFA（商品名、BASF社製）などを挙げる
ことができる。 Examples of the photosensitive resin composition used in the photosensitive resin layer of the flexographic printing plate material of the present invention include (A) polyisobrene, polybutadiene, isoprene-styrene copolymer, styrene-butadiene block copolymer, acrylonitrile-butadiene Synthetic rubber-based or natural rubber-based polymer compounds with rubber elasticity such as copolymers and polyurethanes, (B)
Examples include those whose main components include photopolymerizable monomers such as polyfunctional acrylates, photopolymerization reaction initiators such as (C) benzoin derivatives, and the like. Specific examples of flexographic printing plates using such photosensitive resin compositions include Cyrel (trade name, manufactured by Dupont),
Examples include Lunaflex (trade name, manufactured by Nippon Paint Co., Ltd.), Elaslon (trade name, manufactured by Tokyo Ohka Kogyo Co., Ltd.), and Niroflex FA (trade name, manufactured by BASF Corporation).
本発明におけるフレキソ印刷用版材の厚さにつ
いては被印刷体の種類や使用する印刷機の種類に
応じて適宜選択される。例えば、硬くかつ表面が
平坦であるような紙、金属、プラスチツクなどの
被印刷体には、高いゴム弾性を有する版材は必要
でないため、版材の厚さは比較的薄くてもよい
が、段ボールなど、軟らかくて表面の粗い被印刷
体には、高いゴム弾性を必要とするため、厚い版
材が用いられる。通常、感光性樹脂層全体の厚さ
は、1.5〜10mm、好ましくは1.7〜７mmの範囲で選
ばれる。 The thickness of the flexographic printing plate material in the present invention is appropriately selected depending on the type of printing material and the type of printing machine used. For example, printing materials with hard and flat surfaces such as paper, metal, and plastic do not require a printing material with high rubber elasticity, so the thickness of the printing material may be relatively thin. A thick plate material is used for printing materials that are soft and have a rough surface, such as cardboard, because they require high rubber elasticity. Usually, the total thickness of the photosensitive resin layer is selected in the range of 1.5 to 10 mm, preferably 1.7 to 7 mm.
本発明におけるフレキソ印刷用版材に用いる支
持体は、該版材を露光、現像して得られるレリー
フ像を支持できる強度を有し、かつ使用する印刷
機に容易に取り付けられるものであれば十分であ
る。このようなものとしては、例えばポリエステ
ル、ナイロン、合成ゴムなどのたわみ性のあるシ
ート状のものや、寸法安定性の高いポリエステル
板、鋼板、アルミニウム板などが挙げられる。特
にたわみ性のあるシート状のものは、印刷機のシ
リンダーに取り付けやすく好ましい。これらの支
持体の厚さについては特に制限はないが、実用上
0.07〜0.2mmの範囲で選ばれる。 The support used in the flexographic printing plate material of the present invention is sufficient as long as it has the strength to support the relief image obtained by exposing and developing the plate material and can be easily attached to the printing machine used. It is. Examples of such materials include flexible sheet-like materials such as polyester, nylon, and synthetic rubber, and polyester plates, steel plates, and aluminum plates with high dimensional stability. In particular, flexible sheet-like materials are preferred because they are easy to attach to the cylinder of a printing press. There are no particular restrictions on the thickness of these supports, but for practical purposes
Selected in the range of 0.07 to 0.2 mm.
次に本発明の製版方法について説明すると、ま
ず、支持体上に設けた感光性樹脂層に、その上に
密着させたネガフイルムを介して、活性光線を選
択的に露光する。次に、露光部のパターンに沿つ
て縁辺輪郭部を設けて支持体にきずをつけないよ
うに、上方よりカツターナイフなどによつてパタ
ーン側の断面が裾広台形状になるように斜めに切
り込みを入れる。次いで、切り込み部分に従つ
て、未露光部のみを支持体より剥離することによ
り、露光部とその縁辺輪郭部から成るパターンが
形成される。最後にこのものを、未露光部を溶解
除去しうる現像液を用いて現像処理し、乾燥後必
要ならば後露光を行つてフレキソ印刷版を作成す
る。 Next, the plate-making method of the present invention will be described. First, a photosensitive resin layer provided on a support is selectively exposed to actinic light through a negative film that is brought into close contact thereon. Next, to create an edge contour along the pattern of the exposed area and to avoid damaging the support, cut diagonally from above using a cutter knife or the like so that the cross section on the pattern side has a wide trapezoidal shape. put in. Next, only the unexposed portions are peeled off from the support along the cut portions, thereby forming a pattern consisting of the exposed portions and their edge contours. Finally, this material is developed using a developer capable of dissolving and removing unexposed areas, and after drying, post-exposure is performed if necessary to prepare a flexographic printing plate.
本発明の製版方法に用いる活性光線の光源とし
ては、例えばケミカルランプ、ブラツクライト、
カーボンアーク灯、高圧及び超高圧水銀灯、キセ
ノンアーク灯などが挙げられる。 Examples of active light sources used in the plate-making method of the present invention include chemical lamps, black lights,
Examples include carbon arc lamps, high pressure and extra high pressure mercury lamps, xenon arc lamps, and the like.
また、本発明の製版方法において、活性光線を
ネガフイルムを介して露光したのち、その露光部
のパターンに沿つて縁辺輪郭部を設けて切り込み
を入れる方法としては、使用する版材の感光性樹
脂層と支持体がともに透明な場合には、使用した
ネガフイルムを下じきにして、上方より透視する
ことにより露光パターンを確認しながら、切り込
みを入れるか、又は未露光部のみを溶解しうる溶
剤によつて、軽く表面をリンス処理することで露
光パターンを浮き出させて、切り込みを入れる方
法などが用いられる。また、光変色性の染料を感
光性樹脂組成物に配合すれば、露光部のみが変色
して露光パターンが識別できるので、切り込みを
入れるのに便利である。 In addition, in the plate making method of the present invention, a method of exposing active light through a negative film and then making cuts by providing an edge contour along the pattern of the exposed area is based on the photosensitive resin of the plate material used. If both the layer and the support are transparent, use the negative film as a base and check the exposure pattern by looking through it from above, then make a notch or apply a solvent that can dissolve only the unexposed areas. Therefore, a method is used in which the exposed pattern is raised by lightly rinsing the surface and a cut is made. Furthermore, if a photochromic dye is blended into the photosensitive resin composition, only the exposed areas change color and the exposed pattern can be identified, which is convenient for making incisions.
この切り込みにおいて重要なことは、露光パタ
ーンの周辺部の未露光部を少し残すように、切り
込むことである。これは印刷に適したレリーフ形
状を得るためのものであつて、通常露光パターン
を端から２〜10mmの範囲で未露光部を残すことが
好ましく、この範囲より小さいと、現像処理後、
安定した好ましいレリーフが形成しにくく、また
大きいと、溶解除去する樹脂量が多くなるので好
ましくない。 What is important in making this cut is to make the cut so as to leave a small unexposed area around the exposed pattern. This is to obtain a relief shape suitable for printing, and it is preferable to leave an unexposed area within a range of 2 to 10 mm from the edge of the normal exposure pattern.
It is difficult to form a stable and preferable relief, and if it is large, the amount of resin to be dissolved and removed increases, which is not preferable.
本発明方法において行われるこのような切り込
みは、その周辺部にかなり広い未露光部分を有す
る場合に好都合で、近接した露光パターンである
網点、文字や図柄に対しては必ずしも切り込みを
入れる必要はない。 Such incisions made in the method of the present invention are convenient when the peripheral area has a fairly wide unexposed area, and it is not necessarily necessary to make incisions for halftone dots, characters, and designs that are close exposure patterns. do not have.
前記切り込みは、通常のカツターナイフなどを
用いて行うことができるが、支持体にきずを付け
たり、支持体ごと切断しないように注意を要す
る。金属板を加熱して、熱の作用で感光性樹脂を
切断するヒートカツターを用いれば支持体にきず
を付けることもないので好適である。 The above-mentioned cuts can be made using a common cutter knife, but care must be taken not to damage the support or cut the entire support. It is preferable to use a heat cutter that heats a metal plate and cuts the photosensitive resin by the action of heat, since no scratches will be made on the support.
また、現像処理については、未露光部分を全部
溶解除去するのではなく、感光性樹脂表面から
0.5〜2.5mm程度未露光部分を洗い出し、除去する
ことが好ましい。未露光部分をすべて除去してし
まうと、パターンが不安定となるので好ましくな
い。また、現像時間が長くなり、露光部が膨潤す
るので好ましくない。 In addition, regarding development processing, rather than dissolving and removing all unexposed areas,
It is preferable to wash out and remove the unexposed portion of about 0.5 to 2.5 mm. It is not preferable to remove all the unexposed portions because the pattern will become unstable. Further, the development time becomes long and the exposed areas swell, which is not preferable.
発明の効果
本発明方法によれば、現像処理時間を短縮で、
かつ現像液の疲労が少なく、得られた印刷版の重
量を小さくすることができ、経済的で効率の良い
製版及び印刷処理が可能である上に、特に切り込
みを前記したように斜めに入れることにより、こ
れまで未露光部を剥がす際に部分的に露光部が剥
がれてしまつていたのを未然に防止でき、しかも
確実に未露光部を剥離しうるとともに、露光部の
パターン側の断面が裾広台形状となつているため
に現像時には印刷パターンとして理想的な富士山
型の丈夫かつ安定なレリーフ形状が得られ、耐刷
力を増大しうる。Effects of the Invention According to the method of the present invention, the development processing time can be shortened,
In addition, developer fatigue is low, the weight of the obtained printing plate can be reduced, economical and efficient plate making and printing processing are possible, and in particular the incisions can be made diagonally as described above. This prevents the unexposed area from being partially peeled off when removing the unexposed area, and also allows the unexposed area to be peeled off reliably. Since it has a wide trapezoidal shape, during development, a strong and stable relief shape in the shape of Mt. Fuji, which is ideal as a printing pattern, can be obtained, and printing durability can be increased.
実施例
次に、実施例により本発明をさらに詳細に説明
するが、本発明はこれらの例によつてなんら限定
されるものではない。Examples Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these Examples in any way.
実施例 １
接着剤が塗布された0.1mm厚のポリエステルフ
イルムを支持体とし、この上に2.74mm厚の感光性
樹脂層を設け、さらにこの上を0.1mm厚のポリエ
ステルフイルムで保護して成るフレキソ印刷用版
材であるエラスロンＭ−284B（商品名、東京応
化工業社製）の支持体側より、20Wケミカルラン
プ（東芝社製、FL−20BL）で１分間裏露光を行
つた。次いで保護のためのポリエステルフイルム
を剥がし、露光性樹脂層上にネガフイルムを密着
させ、前記ランプを用いて６分間ネガフイルムを
介して露光した。露光後ネガフイルムを剥がすと
露光部は消色しており可視画像が明確に認められ
た。可視画像の縁から約５mmの縁辺輪郭部を設け
て切り込み深さ2.8mmに設定したカツターナイフ
で上方より、約30°の角度をつけて、残つた可視
画像部断面が台形となるように切り込みを入れ
た。Example 1 A flexographic film made of a 0.1 mm thick polyester film coated with an adhesive as a support, a 2.74 mm thick photosensitive resin layer on top of this, and a 0.1 mm thick polyester film protecting the top. Back exposure was performed for 1 minute using a 20W chemical lamp (FL-20BL, manufactured by Toshiba Corporation) from the support side of a printing plate material, Elaslon M-284B (trade name, manufactured by Tokyo Ohka Kogyo Co., Ltd.). Next, the polyester film for protection was peeled off, a negative film was brought into close contact with the exposed resin layer, and the film was exposed to light through the negative film using the lamp for 6 minutes. When the negative film was peeled off after exposure, the exposed area was decolored and a visible image was clearly recognized. With a cutter knife set to a cutting depth of 2.8 mm and with an edge contour approximately 5 mm from the edge of the visible image, cut from above at an angle of approximately 30° so that the cross section of the remaining visible image becomes a trapezoid. I put it in.
次にこの切り込みに沿つて、未露光部を手作業
で支持体より剥離し、露光部のパターン側の断面
が裾広台形状になるようにした。その後、トリク
ロロエタン中で約３分間現像処理を行つたのち、
60℃で20分間乾燥し、同じランプを用いて８分間
後露光して所望のパターンが形成されたフレキソ
印刷版を得た。 Next, the unexposed area was manually peeled off from the support along this cut so that the cross section of the exposed area on the pattern side had a wide trapezoidal shape. After that, after developing for about 3 minutes in trichloroethane,
It was dried at 60° C. for 20 minutes and post-exposed for 8 minutes using the same lamp to obtain a flexographic printing plate on which the desired pattern was formed.
得られたフレキソ印刷版を印刷機にかけ印刷を
行つたところ良好な印刷物が得られた。 When the obtained flexographic printing plate was printed on a printing machine, good printed matter was obtained.
比較例 １
平均分子量130000の１，２−ポリブタジエン（日
本合成ゴム社製、RB810） 100重量部
平均分子量1000の液状１，２−ポリブタジエン
（日本曹達社製、ニツソーPB−1000） 50重量部
トリメチロールプロパントリアクリレート
５重量部
メトキシフエニルアセトフエノン ３重量部
２，６−ジ−tert−ブチル−４−ヒドロキシトル
エン 0.05重量部
オイルブルー603 0.002重量部
から成る感光性樹脂組成物をトルエン80重量部及
びメチルエチルケトン20重量部から成る混合溶媒
に溶解させたものを高粘度用ポンプにて押出機に
圧入し、押出機内で減圧脱溶剤しながらＴ型ダイ
スで6.8mm厚の感光性樹脂層を得た。その樹脂層
の片面に保護カバーとして0.1mm厚のポリエチレ
ンテレフタレートフイルムをラミネートし、もう
一方の面に接着剤を塗布した0.2mm厚のポリエチ
レンテレフタレートフイルムを支持体として貼付
した。Comparative Example 1 1,2-polybutadiene with an average molecular weight of 130,000 (manufactured by Nippon Gosei Rubber Co., Ltd., RB810) 100 parts by weight Liquid 1,2-polybutadiene with an average molecular weight of 1,000 (manufactured by Nippon Soda Co., Ltd., Nitsuso PB-1000) 50 parts by weight Trimethylol propane triacrylate
A photosensitive resin composition consisting of 5 parts by weight of methoxyphenylacetophenone, 3 parts by weight of 2,6-di-tert-butyl-4-hydroxytoluene, 0.05 parts by weight, and 0.002 parts by weight of Oil Blue 603 was mixed with 80 parts by weight of toluene and 20 parts by weight of methyl ethyl ketone. The solution was dissolved in a mixed solvent consisting of parts by weight, and was press-fitted into an extruder using a high-viscosity pump, and while the solvent was removed under reduced pressure within the extruder, a photosensitive resin layer with a thickness of 6.8 mm was obtained using a T-shaped die. A 0.1 mm thick polyethylene terephthalate film was laminated on one side of the resin layer as a protective cover, and a 0.2 mm thick polyethylene terephthalate film coated with an adhesive was attached to the other side as a support.
得られた版材の支持体側より20Wケミカルラン
プ（東芝社製、FL−20BL）で２分間裏露光を行
つたのち、保護カバーを剥がし、感光性樹脂層上
にネガフイルムを密着させ、上記ランプを用いて
８分間露光した。露光後ネガフイルムを剥がすと
可視画像が明確に認められた。この可視画像の縁
から約５mmの縁辺輪郭部を設けて切り込み深さ
6.8mmまでヒートカツターを使用して垂直に切り
込みを入れた。 After exposing the back side of the obtained plate for 2 minutes using a 20W chemical lamp (manufactured by Toshiba Corporation, FL-20BL) from the support side, the protective cover was peeled off, a negative film was brought into close contact with the photosensitive resin layer, and the above lamp was applied. was used for 8 minutes of exposure. When the negative film was peeled off after exposure, a visible image was clearly observed. The cutting depth is determined by providing an edge contour approximately 5 mm from the edge of this visible image.
Vertical cuts were made using a heat cutter to 6.8 mm.
次にこの切り込みに沿つて未露光部を支持体よ
り剥離したが、パターンに沿つて、縁辺輪郭部を
露光部に近くしたところでは特に網点部において
一部パターン部の剥がれがみられた。 Next, the unexposed area was peeled off from the support along this cut, but along the pattern, some peeling of the pattern area was observed, especially in the halftone area where the edge contour area was close to the exposed area.
比較例 ２
比較例１と同様にして得られた版材を用いて裏
露光及びネガフイルムを介して露光を行い、この
上に、別途用意したポリエチレンテレフタレート
フイルムを可視画像の縁よりも約５mm大きく切り
取つて貼付し、トリクロロエタンで６分間現像し
たところ、ポリエチレンテレフタレートフイルム
で保護されていない未露光部が深さ約４mm溶出さ
れた。次に上記ポリエチレンテレフタレートフイ
ルムを剥がし、さらに３分間現像処理したのち、
60℃で30分間乾燥し、20Wケミカルランプで８分
間後露光を行つた。Comparative Example 2 Using a plate material obtained in the same manner as Comparative Example 1, back exposure and exposure through a negative film were performed, and on top of this, a separately prepared polyethylene terephthalate film was placed about 5 mm larger than the edge of the visible image. When it was cut out, pasted, and developed with trichloroethane for 6 minutes, an unexposed area not protected by the polyethylene terephthalate film was eluted to a depth of about 4 mm. Next, the polyethylene terephthalate film was peeled off and developed for another 3 minutes.
It was dried at 60°C for 30 minutes and post-exposed to a 20W chemical lamp for 8 minutes.
得られた印刷版は、未露光部を溶出した後に約
1.5mm厚の樹脂層が残つた。この印刷版を印刷機
にかけ印刷しようとしたが、印刷版の重量が、比
較例１で得た印刷版より大きいため、印刷機への
装着に手間がかかつた。 The resulting printing plate, after elution of the unexposed areas,
A 1.5 mm thick resin layer remained. An attempt was made to print using this printing plate on a printing machine, but since the weight of the printing plate was larger than the printing plate obtained in Comparative Example 1, it took time and effort to mount it on the printing machine.
また、同じ現像液を用いて、同様にして製版処
理を繰り返したが、現像液40当り0.6m2の感光
性樹脂版を処理した後から現像時間が長くなつて
きた。 In addition, the plate-making process was repeated in the same manner using the same developer, but the development time became longer after processing 0.6 m 2 of photosensitive resin plate per 40 developer.
比較例 ３
比較例１と同じ感光性組成物を用いて特開昭61
−53645号公報実施例４と同様の方法で２層構造
を有するフレキソ印刷用版材を得た。Comparative Example 3 Using the same photosensitive composition as Comparative Example 1,
A flexographic printing plate material having a two-layer structure was obtained in the same manner as in Example 4 of Publication No. -53645.
すなわち、感光性樹脂組成物を、高粘度ポンプ
にて押出機に圧入し、押出機内で減圧脱溶剤しな
がらＴ型ダイスで3.4mm厚の感光性樹脂層を得た。
この感光性樹脂層の片面に、接着剤を塗布した
0.2mm厚のポリエチレンテレフタレートフイルム
を支持体として貼付し、もう一方の面にメタクリ
ル酸エチル−スチレン樹脂を5μｍの厚さとなる
ように塗布したポリエチレンテレフタレートフイ
ルムを塗布面と感光性樹脂層面が接するようにラ
ミネート後、ポリエチレンテレフタレートフイル
ムを除去することによりメタクリル酸エチル−ス
チレン樹脂が付着した3.6mm厚の感光性樹脂層が
得られた。さらに、この上に、同様にして得た
3.4mm厚の感光性樹脂層をラミネートすることに
より７mm厚のフレキソ印刷用版材が得られた。こ
の版を用いて、比較例１と同様にして裏露光及び
ネガフイルムを介して露光したのち、可視画像の
縁から約５mmの縁辺輪郭部を設けて切り込み深さ
3.5mmまでヒートカツターを使用して切り込みを
入れた。 That is, the photosensitive resin composition was press-fitted into an extruder using a high viscosity pump, and a 3.4 mm thick photosensitive resin layer was obtained using a T-shaped die while removing the solvent under reduced pressure within the extruder.
Adhesive was applied to one side of this photosensitive resin layer.
A 0.2 mm thick polyethylene terephthalate film was attached as a support, and the other side was coated with a polyethylene terephthalate film coated with ethyl methacrylate-styrene resin to a thickness of 5 μm, so that the coated side and the photosensitive resin layer side were in contact. After lamination, the polyethylene terephthalate film was removed to obtain a 3.6 mm thick photosensitive resin layer to which the ethyl methacrylate-styrene resin was attached. Furthermore, on top of this, we similarly obtained
A 7 mm thick flexographic printing plate material was obtained by laminating a 3.4 mm thick photosensitive resin layer. Using this plate, after back exposure and exposure through a negative film in the same manner as in Comparative Example 1, an edge contour of about 5 mm from the edge of the visible image was provided, and the cut depth was
Cuts were made using a heat cutter to 3.5 mm.
次にこの切り込みに沿つて未露光部の上層のみ
を剥離した。その後、この版をトリクロロエタン
中で３分間現像し、60℃で30分間乾燥したのち、
ケミカルランプで８分間後露光を行つた。 Next, only the upper layer of the unexposed area was peeled off along this cut. This plate was then developed in trichloroethane for 3 minutes and dried at 60°C for 30 minutes.
Post-exposure was performed for 8 minutes with a chemical lamp.
得らえた印刷版は、未露光部を溶出した後に約
2.5mm厚の樹脂層が残つた。この印刷版を印刷機
にかけ印刷しようとしたが、重量が大きいため印
刷機への装着に手間がかかつた。 The resulting printing plate is approximately
A 2.5 mm thick resin layer remained. I tried to use this printing plate on a printing press to print, but it was heavy and it took a lot of effort to mount it on the printing press.
また、同じ現像液を用いて、同様にして製版処
理を繰り返したが、現像液40当り、１m2の感光
性樹脂版を処理した後から、現像時間が長くなつ
てきた。 Further, the plate making process was repeated in the same manner using the same developer, but the development time became longer after processing 1 m 2 of photosensitive resin plate per 40 developer.
Claims (1)
キソ印刷用版材に活性光線を選択的に露光したの
ち、露光部のパターンに沿つて縁辺輪郭部を設け
てパターン側の断面が裾広台形状になるように斜
めに切り込みを入れ、次いでその切り込み部分に
従つて、未露光部のみを支持体から剥離したの
ち、現像処理を行うことを特徴とするフレキソ印
刷用版材の製版方法。1 After selectively exposing a flexographic printing plate material consisting of a single layer of photosensitive resin on a support to actinic rays, an edge contour is provided along the pattern of the exposed area so that the cross section on the pattern side is wide. A method for making a plate material for flexographic printing, which comprises making a diagonal incision so as to form a trapezoidal shape, and then peeling off only the unexposed area from the support according to the incision, and then performing a development process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12639888A JPH01296253A (en) | 1988-05-24 | 1988-05-24 | Plate making method for plate material for flexographic printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12639888A JPH01296253A (en) | 1988-05-24 | 1988-05-24 | Plate making method for plate material for flexographic printing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01296253A JPH01296253A (en) | 1989-11-29 |
| JPH0571941B2 true JPH0571941B2 (en) | 1993-10-08 |
Family
ID=14934164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12639888A Granted JPH01296253A (en) | 1988-05-24 | 1988-05-24 | Plate making method for plate material for flexographic printing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01296253A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7219999B1 (en) * | 2022-08-30 | 2023-02-09 | 日本電子精機株式会社 | FLEXOGRAPHIC PLATE, ITS MANUFACTURING METHOD AND HEAT CUT DEVICE |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6153645A (en) * | 1984-08-24 | 1986-03-17 | Fuotopori Ouka Kk | Plate material for flexographic printing and photoengraving method using said material |
| JPS62287234A (en) * | 1986-06-06 | 1987-12-14 | Nippon Paint Co Ltd | Photosensitive resin plate material |
-
1988
- 1988-05-24 JP JP12639888A patent/JPH01296253A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6153645A (en) * | 1984-08-24 | 1986-03-17 | Fuotopori Ouka Kk | Plate material for flexographic printing and photoengraving method using said material |
| JPS62287234A (en) * | 1986-06-06 | 1987-12-14 | Nippon Paint Co Ltd | Photosensitive resin plate material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01296253A (en) | 1989-11-29 |
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