JPH0732085Y2 - Plate material for corrugated board printing - Google Patents
Plate material for corrugated board printingInfo
- Publication number
- JPH0732085Y2 JPH0732085Y2 JP1987197238U JP19723887U JPH0732085Y2 JP H0732085 Y2 JPH0732085 Y2 JP H0732085Y2 JP 1987197238 U JP1987197238 U JP 1987197238U JP 19723887 U JP19723887 U JP 19723887U JP H0732085 Y2 JPH0732085 Y2 JP H0732085Y2
- Authority
- JP
- Japan
- Prior art keywords
- plate material
- printing
- corrugated board
- rubber
- degrees
- 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
Landscapes
- Printing Plates And Materials Therefor (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、段ボール印刷用版材に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a corrugated board printing plate material.
（従来の技術） 段ボール印刷用版材として、天然または合成のゴムから
なるJISゴム硬度30〜60度の表ゴム層と裏ゴム層との間
に布帛などの補強シートをサンドイッチ状に挟んで加硫
接着したもの、および裏ゴム層の上に補強シート、中間
ゴム層、薄い表面ゴム層を順に重ねて加硫接着し、裏ゴ
ム層と中間ゴム層の硬さをJISゴム硬度30〜60度とし、
表面ゴム層の硬さを中間ゴム層よりも10〜20度低くした
もの等が知られている（実公昭56-52064号公報参照）。(Prior art) As a plate material for corrugated board printing, a reinforcing sheet such as cloth is sandwiched between a front rubber layer made of natural or synthetic rubber and having a JIS rubber hardness of 30 to 60 degrees and a back rubber layer. A vulcanization-bonded product and a reinforcing sheet, an intermediate rubber layer, and a thin surface rubber layer are laminated in this order on the back rubber layer and then vulcanized and adhered. The hardness of the back rubber layer and the intermediate rubber layer is JIS rubber hardness 30 to 60 degrees. age,
It is known that the hardness of the surface rubber layer is lower than that of the intermediate rubber layer by 10 to 20 degrees (see Japanese Utility Model Publication No. 56-52064).
（考案が解決しようとする問題点） 従来の段ボール印刷用版材は、いずれもソリッドゴムの
板を用いていたので、その軟かさに限界があり、JIS-A
ゴム20度硬度が限界であった。しかし、20度になると腰
が弱くなって印刷ずれが生じるので、版材としては硬度
30度囲繞のものが使用されていた。しかして、硬度30度
以上の版材に彫刻して凸版を作り、これで段ボールに印
刷した場合は、印圧が高くなり、印刷インキ付着部分の
進み側に印刷インキが余分に付着してマージナルゾーン
が生じ、また段ボールの中芯がつぶれて段ボールの強度
が低下するという問題があった。特に段ボールに折り目
用の罫線を付した後、この罫線にまたがって印刷する場
合は、罫線の部分が凹んでいるため印刷インキの付着し
ないかすれ部分が発生し、これを防止するために印圧を
大きく設定した場合は、段ボールの中芯がつぶれる結果
になっていた。(Problems to be solved by the invention) Since the conventional plate material for corrugated board printing uses a solid rubber plate, its softness is limited, and JIS-A
The rubber hardness was 20 degrees. However, at 20 degrees, the stiffness becomes weak and printing misalignment occurs.
The one surrounded by 30 degrees was used. However, when engraving on a plate material with a hardness of 30 degrees or more to make a letterpress and printing it on a corrugated board, the printing pressure becomes high and excess printing ink adheres to the leading side of the printing ink adhesion part There is a problem that a zone is generated and the core of the corrugated board is crushed to reduce the strength of the corrugated board. In particular, when a cardboard has creases for creases and then prints over the creases, the creases on the creases cause bleeding areas where printing ink does not adhere. When set to a large value, the core of the cardboard was crushed.
この考案は、発泡ゴムを使用することにより、段ボール
に印刷する際の印圧を従来よりも低くして段ボールの強
度低下を防止することができ、しかもマージナルゾーン
や罫線部分のかすれが解消し、印刷むらのない鮮明な印
刷が可能な版材を提供するものである。This invention, by using foam rubber, can reduce the printing pressure when printing on corrugated board to prevent the strength of the corrugated board from decreasing, and eliminate the marginal zone and the rubbing of the ruled line part. It is intended to provide a plate material capable of clear printing without uneven printing.
（問題点を解決するための手段） 発泡層２の表面に平滑なスキン層１を有する発泡ゴムか
らなる版材であって、上記スキン層の厚さが0.3〜2.0m
m、版材表面の硬さがSRIS（Ｃ）35〜55度のもので版材
を形成する。(Means for Solving the Problems) A plate material made of foamed rubber having a smooth skin layer 1 on the surface of the foamed layer 2, wherein the thickness of the skin layer is 0.3 to 2.0 m.
m, the hardness of the plate surface is SRIS (C) 35-55 degrees, and the plate material is formed.
（作用） JIS-Aゴム硬度の30度がSIRS（Ｃ）硬度の約60度に相当
するのに対し、SRIS（Ｃ）硬度35〜55度の発泡ゴムを使
用するので、印圧を低くすることができ、しかもソリッ
ドゴムで、JIS-Aゴム硬度20度のものよりも腰が強くな
る。ただし、版材表面のSRIS（Ｃ）硬度が35度未満の場
合は、腰が弱くなって印刷ずれが生じ、反対に55度に超
えた場合は、従来のソリッドゴム製と同様に印圧が過大
になる。そして、表面が平滑で、厚いスキン層１を有す
るもで、表面に印刷インキが均一に付着し、むらのない
印刷が可能となる。ただし、スキン層１の厚さが0.3mm
未満の場合は、耐刷性が悪くなり、反対に2.0mmを超え
た場合は寸法安定性が低下して反り易く、またソリッド
ゴムの版材と同様に印圧が過大になる。(Function) While JIS-A rubber hardness of 30 degrees corresponds to SIRS (C) hardness of about 60 degrees, SRIS (C) hardness of 35 to 55 degrees is used as foamed rubber, so the printing pressure is reduced. In addition, it is solid rubber and is stronger than JIS-A rubber hardness 20 degrees. However, when the SRIS (C) hardness of the plate material surface is less than 35 degrees, the stiffness becomes weak and printing misalignment occurs. On the contrary, when it exceeds 55 degrees, the printing pressure is the same as with conventional solid rubber. Be oversized. Then, even if the surface is smooth and has the thick skin layer 1, the printing ink is evenly attached to the surface, and printing can be performed without unevenness. However, the thickness of the skin layer 1 is 0.3 mm
If it is less than 2.0 mm, the printing durability is deteriorated. On the contrary, if it exceeds 2.0 mm, the dimensional stability is lowered and the paper tends to warp, and the printing pressure becomes excessive as in the case of the solid rubber plate material.
なお、スキン層１の表面粗さは、JIS最大高さRmax100μ
ｍ以下が好ましく、100μｍを超えた場合は、印刷むら
が生じ易い。The surface roughness of the skin layer 1 is JIS maximum height Rmax100μ
m or less is preferable, and when it exceeds 100 μm, uneven printing is likely to occur.
（実施例） 天然ゴムを用い、スキン層１の厚み0.5mm、版材表面の
硬さSRIS（Ｃ）47度、スキン層１の表面粗さJIS十点平
均粗さRzllμｍ、JIS最大高さRmax15μｍの実施例の版
材を作った。一方、同じ天然ゴムの硬度JIS-A40度のソ
リッドゴムからなる比較例１の印版を作った。これら実
施例および比較例１の版材にそれぞれ彫刻を施し、段ボ
ール用輪転機の版胴に取付け、紙質RK220g/m2×SCP160g
/m2×MC200g/m2、Ｂフルート、大きさ（箱の内寸）480
×373×151mm、Ｒ形式（Ａ型）の段ボールを印圧（印版
表面とドラムの隙間）2.5mm、版胴の回転速度60R/Mで印
刷し、段ボールの厚み変化および段ボール箱の圧縮強さ
（JIS ZO212）を比較した。その結果を下の表に示す。(Example) Using natural rubber, the thickness of the skin layer 1 is 0.5 mm, the hardness of the plate material SRIS (C) is 47 degrees, the surface roughness of the skin layer 1 is JIS ten-point average roughness Rzll μm, and the JIS maximum height is Rmax 15 μm. The plate material of the example was prepared. On the other hand, a printing plate of Comparative Example 1 made of a solid rubber having the same hardness of JIS-A40 as the natural rubber was prepared. Each of the plate materials of these Examples and Comparative Example 1 was engraved and mounted on the plate cylinder of a corrugated board rotary press, and the paper quality was RK220g / m 2 × SCP160g.
/ m 2 x MC200g / m 2 , B flute, size (inside box size) 480
× 373 × 151mm, R type (A type) corrugated board is printed with printing pressure (gap between printing plate surface and drum) 2.5mm, plate cylinder rotation speed of 60R / M, and changes in corrugated board thickness and cardboard box compression strength. (JIS ZO212) was compared. The results are shown in the table below.
上の表で明らなかように、実施例は、厚さの損失が比較
例１の約18％に減少し、圧縮強度の損失が比較例１の約
30％に減少した。なお、印刷むらは、実施例にも、また
比較例１にもほとんど認められなかったが、表面の平滑
性が低く、JIS十点平均粗さRzが37、JIS最大高さRmaxが
110、厚みが0.3mmの薄いスキン層を備えた比較例２の版
材を用いた場合は、印刷面に印刷むらが多発し、実用的
でなかった。 As can be seen in the above table, the example has a thickness loss reduced to about 18% of Comparative Example 1 and a compressive strength loss of about 1%.
It decreased to 30%. It should be noted that although printing unevenness was scarcely observed in Examples and Comparative Example 1, the surface smoothness was low, and JIS ten-point average roughness Rz was 37 and JIS maximum height Rmax was
When the plate material of Comparative Example 2 having a thin skin layer having a thickness of 110 and a thickness of 0.3 mm was used, printing unevenness frequently occurred on the printing surface, which was not practical.
（考案の効果） この考案の版材は、表面が平滑で、厚いスキン層を有す
る発泡ゴムからなり、従来のソリッドゴム製の版材に比
べて硬度が低いので、段ボールの印刷に使用した場合に
中芯のつぶれることがなくて強度低下が大幅に減少し、
かつ印版の寸法安定性が良好で、耐久性にすぐれ、また
マージナルゾーンが解消し、罫線にまたがる印刷を施し
た場合にもかすれの生じることがなく、印刷むらが少な
くなり、しかも従来のソリッドゴム製に比べて約半分の
重さに軽量化され、輸送や版胴への取付けなどの取扱い
が容易になる。(Effect of the Invention) The plate material of the present invention has a smooth surface and is made of foamed rubber having a thick skin layer, and has a hardness lower than that of a conventional solid rubber plate material. There is no crushing of the core and the decrease in strength is greatly reduced,
In addition, the dimensional stability of the printing plate is good, it has excellent durability, the marginal zone is eliminated, and even when printing across ruled lines, there is no blurring, printing unevenness is reduced, and the conventional solid The weight is about half that of rubber, which makes it easier to transport and attach to the plate cylinder.
図面は、この考案の実施例の断面図である。 1:スキン層、2:発泡層。 The drawing is a cross-sectional view of an embodiment of the present invention. 1: skin layer, 2: foam layer.
Claims (2)
泡ゴムからなる版材であり、上記スキン層の厚さが0.3
〜2.0mm、版材表面の硬さがSRIS（Ｃ）35〜55度である
ことを特徴とする段ボール印刷用版材。1. A plate material made of foam rubber having a smooth skin layer on the surface of the foam layer, wherein the thickness of the skin layer is 0.3.
~ 2.0 mm, the hardness of the surface of the plate material is SRIS (C) 35 to 55 degrees, a plate material for corrugated board printing.
00μｍ以下である実用新案登録請求の範囲第１項記載の
段ボール印刷用版材。2. The surface roughness of the skin layer is 1 at JIS maximum height Rmax.
The corrugated board printing plate material according to claim 1, wherein the utility model registration is 00 μm or less.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987197238U JPH0732085Y2 (en) | 1987-12-24 | 1987-12-24 | Plate material for corrugated board printing |
| CA 586508 CA1309298C (en) | 1987-12-24 | 1988-12-20 | Corrugated board printing plate |
| DE3851052T DE3851052T2 (en) | 1987-12-24 | 1988-12-23 | Printing plate for printing on corrugated paper. |
| AT88121628T ATE109728T1 (en) | 1987-12-24 | 1988-12-23 | PRINTING PLATE FOR PRINTING ON CORRUGATED PAPER. |
| EP19880121628 EP0338135B1 (en) | 1987-12-24 | 1988-12-23 | Corrugated board printing plate |
| US07/288,904 US4943467A (en) | 1987-12-24 | 1988-12-23 | Printing plates for corrugated board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987197238U JPH0732085Y2 (en) | 1987-12-24 | 1987-12-24 | Plate material for corrugated board printing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0199657U JPH0199657U (en) | 1989-07-04 |
| JPH0732085Y2 true JPH0732085Y2 (en) | 1995-07-26 |
Family
ID=31487803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987197238U Expired - Lifetime JPH0732085Y2 (en) | 1987-12-24 | 1987-12-24 | Plate material for corrugated board printing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0732085Y2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4116243Y1 (en) * | 1964-05-02 | 1966-07-28 | ||
| JPS5652064Y2 (en) * | 1978-04-18 | 1981-12-04 | ||
| EP0057593A3 (en) * | 1981-02-02 | 1983-01-19 | Uniroyal, Inc. | Compressible photopolymer printing plate |
| JPS6257264U (en) * | 1985-09-28 | 1987-04-09 | ||
| JPS6257246U (en) * | 1985-09-30 | 1987-04-09 |
-
1987
- 1987-12-24 JP JP1987197238U patent/JPH0732085Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0199657U (en) | 1989-07-04 |
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