JPS61258794A - Water-swellable ducter roller - Google Patents
Water-swellable ducter rollerInfo
- Publication number
- JPS61258794A JPS61258794A JP9962985A JP9962985A JPS61258794A JP S61258794 A JPS61258794 A JP S61258794A JP 9962985 A JP9962985 A JP 9962985A JP 9962985 A JP9962985 A JP 9962985A JP S61258794 A JPS61258794 A JP S61258794A
- Authority
- JP
- Japan
- Prior art keywords
- water
- parts
- swellable
- substance
- rubber
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N7/00—Shells for rollers of printing machines
- B41N7/04—Shells for rollers of printing machines for damping rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/02—Top layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2207/00—Location or type of the layers in shells for rollers of printing machines
- B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、オフセット印刷機において、浸し水を供給す
るための水棒に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water rod for supplying immersion water in an offset printing press.
(従来の技術)
オフセ・ント印刷機においては、版面の非画線部に水膜
を構成してインキをはじき、且つ非画線部を汚さない為
に非画線部に相当する版面に給水する必要がある。(Prior art) In an offset printing machine, a water film is formed on the non-image area of the printing plate to repel ink, and water is supplied to the plate surface corresponding to the non-image area in order to avoid staining the non-image area. There is a need to.
更にこの水膜は均一でしかも最適な水量にコントロール
する必要がある。即ち使用する版材、インキの性質、紙
、画線部と非画線部の面積比、その他の印刷条件により
版面に供給する浸し水の水量のコントロールが必要であ
り、このような浸し水の供給には水棒が使用されている
。Furthermore, this water film must be uniform and the amount of water must be controlled to an optimum level. In other words, it is necessary to control the amount of soaking water supplied to the plate surface depending on the plate material used, the properties of the ink, the paper, the area ratio of printed areas to non-printed areas, and other printing conditions. A water rod is used for supply.
従来、使用されている水棒は、綿等を筒状に織ったもの
や紙筒状の不織布をゴムロールに被覆したものが使用さ
れている。BACKGROUND ART Conventionally, water sticks have been made of cotton or the like woven into a cylinder, or made by covering a rubber roll with a paper tube-shaped nonwoven fabric.
(発明が解決しようとしている問題点)綿等を筒状の織
ったものは、保水性は非常に大きいが、繊維が脱落して
印刷面に付着したり、保水性が大きすぎて浸し水の供給
規制が迅速にできなかったり、耐久性が劣る等の欠点が
ある。(Problem to be solved by the invention) Cylindrical woven materials such as cotton have a very high water retention capacity, but the fibers may fall off and stick to the printed surface, or the water retention capacity is so high that it cannot be soaked in water. There are drawbacks such as the inability to quickly regulate supply and poor durability.
紙筒状の不織布を使用したものは、上記の問題点は改良
されているが、クッション性がなく、寸法の融通性が極
めて小さく、そのため精度の高い専用のゴムロールが必
要であり、装着精度も細心の注意が必要となる等の問題
をかかえている。Although paper tube-shaped nonwoven fabrics have improved the above problems, they do not have cushioning properties and have very little dimensional flexibility, so they require specialized rubber rolls with high precision, and the installation accuracy is also poor. There are problems that require careful attention.
本発明は、上述の如き従来技術の欠点を解決すべく鋭意
研究の結果、ゴム状物質に水膨潤性高分子物を均一に分
散したものを水棒に使用することによって、上述の従来
技術の欠点が解決されることを知見して本発明を完成し
た。As a result of intensive research in order to solve the above-mentioned drawbacks of the prior art, the present invention solves the above-mentioned prior art by using a rubber-like substance with a water-swellable polymer uniformly dispersed in the water rod. The present invention was completed based on the finding that the drawbacks were solved.
(問題点を解決するための手段)
すなわち、本発明は、ゴム状物質および該ゴム状物質中
に均一に分布した水膨潤性高分子物を主原料としてなる
ことを特徴とする水膨潤性水棒である。(Means for Solving the Problems) That is, the present invention provides a water-swellable water-swelling material characterized in that the main raw materials are a rubber-like substance and a water-swellable polymer uniformly distributed in the rubber-like substance. It's a stick.
本発明の詳細な説明すると、本発明の水棒の基材となる
ゴム状物質とは、天然ゴム、ボリブタジ二ン、ポリイソ
プレン、ポリイソブチレン、ブタジェン−スチレン共重
合体、イソプレン−スチレン共重合体、ブタジェン−ア
クリロニトリル共重合体、ポリクロロプレン、エチレン
プロピレンゴム、アクリルゴム、エチレン−酢酸ビニル
共重合体、シリコンゴム、ウレタンゴム等であり、従来
公知のゴム状物質はいずれも本発明において使用するこ
とができる。To explain the present invention in detail, the rubbery substances that serve as the base material of the water rod of the present invention include natural rubber, polybutadidine, polyisoprene, polyisobutylene, butadiene-styrene copolymer, and isoprene-styrene copolymer. , butadiene-acrylonitrile copolymer, polychloroprene, ethylene propylene rubber, acrylic rubber, ethylene-vinyl acetate copolymer, silicone rubber, urethane rubber, etc., and any conventionally known rubbery substances can be used in the present invention. I can do it.
これらのゴム状物質として、本発明において特に好まし
いものは、耐油性、耐久性、加工性等においてすぐれて
いるブタジェン−アクリロニトリル共重合体、ポリクロ
ロプレン、ポリイソプレン等である。Particularly preferred rubber-like substances in the present invention are butadiene-acrylonitrile copolymers, polychloroprene, polyisoprene, etc., which are excellent in oil resistance, durability, processability, and the like.
本発明において使用する水膨潤性高分子物としては、親
水性基がアニオン型のものとしてデンプン−ポリアクリ
ル酸ナトリウムグラフト化物、デンプン−ポリアクリロ
ニトリルグラフト化物のケン化物、セルロース−ポリア
クリル酸ナトリウム、ビニルアルコール=(メタ)アク
リル酸ナトリウム−(メタ)アクリル酸共重合体、架橋
ポリ(メタ)アクリル酸ナトリウム、架橋インブチレン
−無水マレイン酸共重合体のアルカリ中和物、架橋カル
ボキシメチルセルロースのナトリウム塩等が挙げられ、
また親水性基がノニオン型のものとして架橋ポリオキシ
エチレンオキシド、架橋ポリオキシエチレン鎖含有ウレ
タン系樹脂等であり、従来公知のものはいずれも使用す
ることができる。The water-swellable polymers used in the present invention include those having anionic hydrophilic groups such as starch-sodium polyacrylate grafted products, saponified starch-polyacrylonitrile grafted products, cellulose-sodium polyacrylate, vinyl Alcohol = sodium (meth)acrylate-(meth)acrylic acid copolymer, crosslinked sodium poly(meth)acrylate, alkali neutralized product of crosslinked inbutylene-maleic anhydride copolymer, sodium salt of crosslinked carboxymethylcellulose, etc. are mentioned,
Examples of nonionic hydrophilic groups include crosslinked polyoxyethylene oxide, crosslinked polyoxyethylene chain-containing urethane resins, and any conventionally known ones can be used.
特に好ましい水膨潤性高分子物は、例えば特開昭54−
47798号、同54−83091号、同54−839
89号、同54−87791号、同54−108895
号公報等に記載された(疎水性ポリマーセグメント)−
(親水性セグメント)−(疎水性ポリマーセグメント)
の結合形式を有するブロックコポリマーである。このよ
うなブロックコポリマーのうちで好ましいものは上記の
親水性セグメントの親水性基がカルボン酸あるいはスル
ホン酸のアルカリ金属塩であるものである。Particularly preferred water-swellable polymers include, for example, JP-A-54-
No. 47798, No. 54-83091, No. 54-839
No. 89, No. 54-87791, No. 54-108895
(Hydrophobic polymer segment) described in the publication, etc.
(Hydrophilic segment) - (Hydrophobic polymer segment)
It is a block copolymer with a bond type of . Among such block copolymers, preferred are those in which the hydrophilic group of the hydrophilic segment is an alkali metal salt of carboxylic acid or sulfonic acid.
更に好ましい水膨潤性高分子物は、例えば特開昭58−
225115号公報に記載された架橋ポリオキシエチレ
ン鎖含有ウレタン系水膨潤性高分子物である。A more preferable water-swellable polymer is, for example, disclosed in Japanese Patent Application Laid-Open No. 1986-
This is a crosslinked polyoxyethylene chain-containing urethane-based water-swellable polymer described in Japanese Patent No. 225115.
これらの好ましい水膨潤性高分子物はゴム状物質中に分
散させる時に混和性にすぐれ、ゴム状物質中に分散され
た状態でも十分な吸水・保水性を示すものである。These preferred water-swellable polymers have excellent miscibility when dispersed in a rubber-like material, and exhibit sufficient water absorption and water retention properties even when dispersed in a rubber-like material.
以上の如き水膨潤性高分子物は本発明においては原料で
あるゴム状物質100重量部あたり約10〜約200重
量部の割合で使用するのが好ましい、水膨潤性高分子物
としては種々の膨潤力のものが入手し得るが、高膨潤力
のものであっても使用量が10重量部以下では製品であ
る水棒の水膨潤度が不十分であり、また低膨潤カのもの
でも200重量部以上の量で使用すると得られる水棒の
物理的強度が不十分となる。In the present invention, the above-mentioned water-swellable polymers are preferably used at a ratio of about 10 to about 200 parts by weight per 100 parts by weight of the rubbery material as the raw material. Products with a high swelling power are available, but even if the amount used is less than 10 parts by weight, the degree of water swelling of the product water rod will be insufficient, and even with a low swelling power, the degree of water swelling will be insufficient if the amount used is less than 10 parts by weight. If it is used in an amount exceeding 1 part by weight, the resulting water stick will have insufficient physical strength.
なお、これらの水膨潤性高分子物は単独でも混合物とし
ても使用することができるが、前記の架橋ポリオキシエ
チレン鎖含有ウレタン系水膨潤性高分子物を単独使用あ
るいは、他の水膨潤性高分子物とを併用することにより
、充分に架橋して強度の大きなゴム状物質に対しても十
分な吸水膨潤性を示すと共に吸水膨潤速度も大きくする
ことができる。その使用量は、全水膨潤性高分子物中で
5重量%以上が好ましい。Note that these water-swellable polymers can be used alone or as a mixture, but the above-mentioned crosslinked polyoxyethylene chain-containing urethane-based water-swellable polymer may be used alone or in combination with other water-swellable polymers. By using it in combination with a molecular substance, it is possible to sufficiently crosslink and exhibit sufficient water absorption swelling properties even for strong rubber-like substances, and also to increase the water absorption swelling rate. The amount used is preferably 5% by weight or more based on the total water-swellable polymer.
また本発明においてはゴム状物質が最終的には架橋して
いることが必要であり、その製造方法において原料コン
パウンド中に硫黄、酸化マグネシウム、亜鉛華、硫黄含
有化合物等の公知の架橋剤および必要に応じて加硫促進
剤を包含させて使用する。これらの架橋剤や加硫促進剤
は従来慣用の使用量でよい。In addition, in the present invention, it is necessary that the rubber-like substance is ultimately crosslinked, and in the manufacturing method, known crosslinking agents such as sulfur, magnesium oxide, zinc white, and sulfur-containing compounds are added to the raw material compound. A vulcanization accelerator may be included depending on the conditions. These crosslinking agents and vulcanization accelerators may be used in conventionally customary amounts.
更に保水性、クッション性を増加させる為、従来公知の
発泡剤により水棒全体を発泡させても良い。Furthermore, in order to increase water retention and cushioning properties, the entire water rod may be foamed using a conventionally known foaming agent.
その池水発明の水棒は従来公知のゴム用添加剤、例えば
カーボンブラック、各種着色顔料、紫外線吸収剤、酸化
防止剤、ワックス、プロセスオイル、高級脂肪酸、各種
充填剤、体質顔料等を任意に包含することができる。The water rod of the Ikemizu invention optionally contains conventionally known rubber additives such as carbon black, various coloring pigments, ultraviolet absorbers, antioxidants, waxes, process oils, higher fatty acids, various fillers, extender pigments, etc. can do.
本発明の水棒を構成する原料は以上の通りであるが、更
に本発明の水棒の他の特徴をその製造方法とともに説明
する。The raw materials constituting the water rod of the present invention are as described above, and other features of the water rod of the present invention will be further explained together with the manufacturing method thereof.
本発明の水棒は上記の如き必要な各種原料を所定の配合
でロールやバンバリーミキサ−等で混練して均質化し1
次いで任意の方法、例えば押出成形、プレス成形、カレ
ンダー成形等により所望の形状に成形する。これらの混
線条件や成形条件は従来慣用の条件でよい。The water rod of the present invention is made by kneading and homogenizing the various necessary raw materials as described above in a predetermined composition using a roll or a Banbury mixer.
Then, it is molded into a desired shape by any method such as extrusion molding, press molding, calendar molding, etc. These cross-wire conditions and molding conditions may be conventionally used conditions.
成形物を水棒として、そのまま使用しても良いが、−炭
水中に浸漬して、充分に吸水、膨潤させたものを使用す
る方が好ましい、吸水、膨潤させたものは、多少の圧力
では水をはき出すことはなく、適度の保水性を有してお
り、更に充分なゴム強度と弾力性を有している。′
成形物の製造において、例えば中空円筒状に成形してお
き、鉄心をとりつける方法、吸水膨潤後に鉄心をとりつ
ける方法、あるいは、鉄心に未架橋ゴムを巻きつけた後
ロール状に架橋成形する方法あるいは吸水、膨潤後水棒
として使用する方法等がある。The molded product may be used as it is as a water rod, but it is preferable to use one that has been immersed in charcoal water and has sufficiently absorbed and swelled. It does not expel water, has a suitable water retention ability, and has sufficient rubber strength and elasticity. ´ In the production of molded products, for example, a method is used in which the product is formed into a hollow cylindrical shape and an iron core is attached to it, a method in which the iron core is attached after water absorption and swelling, or a method in which uncrosslinked rubber is wound around the iron core and then crosslinked into a roll shape. There are methods such as using it as a water rod after absorbing water and swelling.
好ましい方法は中空円筒状に成形後、吸水、膨潤したも
のを鉄心にとりつける方法である。A preferred method is to mold it into a hollow cylindrical shape, absorb water and swell it, then attach it to an iron core.
以上の如き本発明の水棒の寸法は、それを使用するオフ
セット印刷機のサイズによって変化するが、一般的には
直径が約3〜15cmの丸棒状でその長さが約30 ”
ZOOcm程度のものである。The dimensions of the water rod of the present invention as described above vary depending on the size of the offset printing machine that uses it, but generally it is a round rod with a diameter of about 3 to 15 cm and a length of about 30".
It is about ZOOcm.
(作用・効果)
以上の如くして得られた本発明の水膨潤性水棒は、架橋
したゴム状物質を使用しているので、ゴム強度が大で弾
力性を有しており、これが、吸水、膨潤した後もゴム強
度や弾力性は失われず、耐久性も大きい、しかもオフセ
ット印刷機に適した吸水、保水性を有し、取扱いが簡単
である等従来の水棒の欠点を解決したものである。(Function/Effect) The water-swellable water stick of the present invention obtained as described above uses a crosslinked rubbery substance, so it has high rubber strength and elasticity. Even after absorbing water and swelling, the rubber does not lose its strength and elasticity, and is very durable. Furthermore, it has water absorption and water retention properties suitable for offset printing machines, and is easy to handle, solving the disadvantages of conventional water rods. It is something.
次に実施例を挙げて本発明を更に具体的に説明する。な
お、文中、部または%とあるのは特に断りのない限り重
量基準である。Next, the present invention will be explained in more detail with reference to Examples. In addition, parts and percentages in the text are based on weight unless otherwise specified.
実施例1
ポリイソプレン50部、ポリブタジェン50部、水膨潤
性高分子物(ダイスウェル、大日精化工業製、水膨潤度
約150倍)60部、架橋ポリオキシエチレン鎖含有ウ
レタン系水膨潤性高分子物(水膨潤度約15倍)40部
、カオリン質クレー30部、沈降性炭酸カルシウム20
部、界面活性剤5部、ステアリン酸1.5部、亜鉛華5
部、硫黄2.5部および加硫促進剤0M1.5部をロー
ルで混練後、中空円筒状の金型で160℃、15分間プ
レス加硫により成形した。Example 1 50 parts of polyisoprene, 50 parts of polybutadiene, 60 parts of a water-swellable polymer (Dicewell, manufactured by Dainichiseika Industries, water swelling degree of about 150 times), cross-linked polyoxyethylene chain-containing urethane-based highly water-swellable polymer Molecular substance (water swelling degree approximately 15 times) 40 parts, kaolin clay 30 parts, precipitated calcium carbonate 20 parts
part, surfactant 5 parts, stearic acid 1.5 parts, zinc white 5 parts
2.5 parts of sulfur and 1.5 parts of 0M vulcanization accelerator were kneaded with a roll, and then press vulcanized in a hollow cylindrical mold at 160° C. for 15 minutes.
得られた成形物を水中に約30日間浸漬すると、自重の
約3倍の水を吸水し膨潤した。When the obtained molded product was immersed in water for about 30 days, it absorbed about three times its own weight in water and swelled.
吸水ゴムの両断面を切り落としこれに鉄心をとりつけ、
表面を研磨したものは水棒として適度の弾力性と強度を
有しており、これを用いてオフセット印刷したところ、
版面へ均一に給水でき、印刷の状態も良好であった。ま
た、このものは水棒として耐久性も優れていた。Cut off both cross sections of the water absorbing rubber and attach the iron core to it.
The polished surface has appropriate elasticity and strength as a water rod, and when offset printing was performed using this,
Water could be supplied uniformly to the plate surface, and the printing condition was good. Additionally, this product had excellent durability as a water stick.
実施例2
クロロブレンゴム100部、架橋ポリオキシエチレン鎖
含有ウレタン系水I!i1潤性高分子物(水膨潤度約2
0倍)80部、カオリン質クレー60部、界面活性剤2
0部、ステアリン酸0.5部、酸化マグネシウム4部、
亜鉛華5部および加硫促進剤−221部をロールで混練
後、以下実施例1と同様にして170℃で10分間プレ
ス加硫を行なった。Example 2 100 parts of chloroprene rubber, crosslinked polyoxyethylene chain-containing urethane water I! i1 Swelling polymer (water swelling degree approx. 2)
0x) 80 parts, kaolin clay 60 parts, surfactant 2
0 parts, stearic acid 0.5 parts, magnesium oxide 4 parts,
After kneading 5 parts of zinc white and 221 parts of a vulcanization accelerator with a roll, press vulcanization was performed at 170° C. for 10 minutes in the same manner as in Example 1.
得られた成形物を20日間水中浸漬した時の吸水、膨潤
倍率は自重の約1.8倍であった。When the obtained molded product was immersed in water for 20 days, the water absorption and swelling ratio was approximately 1.8 times its own weight.
これに鉄心をとりつけ、水棒として使用したところ実施
例1と同様、印刷状態良好なオフセット印刷ができた。When an iron core was attached to this and used as a water rod, offset printing with good print quality was achieved as in Example 1.
実施例3
NBR(中誤ニトリル)100部、架橋ポリアクリル酸
ナトリウム(水膨潤性高分子物、水膨潤度約250倍)
100部、架橋ポリオキシエチレン鎖含有ウレタン系水
膨潤性高分子物(水膨潤度約15倍)10部、黒サブ4
0部、カオリン質クレー60部、界面活性剤10部、ス
テアリン酸1.5部、亜鉛華5部、硫黄0.5部、加硫
促進剤−021部および加硫促進剤−TTZ部をロール
で混練後、以下実施例1と同様にして成形した。Example 3 100 parts of NBR (medium nitrile), cross-linked sodium polyacrylate (water-swellable polymer, degree of water swelling approximately 250 times)
100 parts, 10 parts of crosslinked polyoxyethylene chain-containing urethane water-swellable polymer (water swelling degree approximately 15 times), Black Sub 4
0 parts, 60 parts of kaolin clay, 10 parts of surfactant, 1.5 parts of stearic acid, 5 parts of zinc white, 0.5 parts of sulfur, 21 parts of vulcanization accelerator and TTZ part of vulcanization accelerator. After kneading, the mixture was molded in the same manner as in Example 1.
得られた成形物を50℃の温水中に10日間浸漬したと
ころ自重の約3.5倍であった。When the obtained molded product was immersed in hot water at 50° C. for 10 days, it weighed about 3.5 times its own weight.
これに鉄心をとりつけ水棒として使用したところ、実施
例1と同様、適度のクッション性と強度とを有しており
、これを用いてオフセット印刷したところ、版面への給
水は均一であり、印刷の状態も良好であった。また、こ
のものは水棒として耐久性も優れていた。When we attached an iron core to this and used it as a water rod, it had appropriate cushioning properties and strength as in Example 1. When offset printing was performed using this, the water supply to the plate surface was uniform, and the printing The condition was also good. Additionally, this product had excellent durability as a water stick.
実施例4
クロロブレンゴム(押出用タイプ)100部、水膨潤性
高分子物(ダイスウェル、大日精化工業製、水膨潤度約
120倍)100部、カオリン質クレー30部、カーボ
ンブラック20部、プロセスオイル10部、黒サブ10
部、ステアリン酸0.5部、亜鉛華5部、酸化マグネシ
ウム4部および加硫促進剤−EURl、2部をロールで
混練後、中空円筒状に押出し、引き続きUHFおよびH
AV(180℃)で連続加硫を行ない、成形物を得た。Example 4 100 parts of chloroprene rubber (extrusion type), 100 parts of water-swellable polymer (Dicewell, manufactured by Dainichiseika Industries, water swelling degree of about 120 times), 30 parts of kaolin clay, 20 parts of carbon black , 10 parts of process oil, 10 parts of black sub
0.5 parts of stearic acid, 5 parts of zinc white, 4 parts of magnesium oxide, and 2 parts of vulcanization accelerator - EUR1 were kneaded with a roll, extruded into a hollow cylinder, and then mixed with UHF and H
Continuous vulcanization was performed at AV (180°C) to obtain a molded product.
この成形物を切断後、水中に30日間浸漬したところ、
自重の約3.5倍の水を吸水し膨潤した。After cutting this molded product, it was immersed in water for 30 days.
It absorbed about 3.5 times its own weight of water and swelled.
このものは適度の弾力性と強度を有しており水棒として
使用したところ実施例1と同様オフセット印刷の状態は
良好であった。This product had appropriate elasticity and strength, and when used as a water rod, the offset printing condition was good as in Example 1.
実施例5
クロロブレンゴム100部、水膨潤性高分子物(ダイス
ウェル、大日精化工業製、水膨潤度約100倍)150
部、架橋ポリオキシエチレン鎖含有ウレタン系水膨潤性
高分子物(水膨潤度約15倍)20部、カオリン質クレ
ー50部、沈降性炭酸カルシウム30部、プロセスオイ
ル15部、ステアリン酸0.5部、発泡剤DPTS部、
尿素系発泡助剤5部、酸化マグネシウム4部、亜鉛華5
部、加硫促進剤−221部および加硫促進剤EUR1,
2部をロールにて混練後、中空円筒状に押出し、HAV
180℃により連続発泡加硫を行ない、空隙率約20%
の成形物を得た。Example 5 100 parts of chloroprene rubber, 150 parts of water-swellable polymer (Dicewell, manufactured by Dainichiseika Chemical Industry, water swelling degree of about 100 times)
1 part, 20 parts of a crosslinked polyoxyethylene chain-containing urethane water-swellable polymer (water swelling degree approximately 15 times), 50 parts of kaolin clay, 30 parts of precipitated calcium carbonate, 15 parts of process oil, 0.5 parts of stearic acid part, blowing agent DPTS part,
5 parts of urea foaming aid, 4 parts of magnesium oxide, 5 parts of zinc white
parts, vulcanization accelerator -221 parts and vulcanization accelerator EUR1,
After kneading the two parts with a roll, extrude it into a hollow cylinder shape and form HAV
Continuous foam vulcanization is performed at 180℃, and the porosity is approximately 20%.
A molded product was obtained.
この成形物を切断後、50℃の温水中で15日間浸漬す
ると、自重の約4倍の水を吸水しmat。When this molded product is cut and immersed in warm water at 50°C for 15 days, it absorbs about 4 times its own weight in water.
た。Ta.
このものは適度の弾力性と強度を有し、水棒として使用
したところ、実施例1と同様オフセット印刷の状態は良
好であった。This product had appropriate elasticity and strength, and when used as a water rod, the offset printing condition was good as in Example 1.
実施例6
NBR(中高ニトリル)100部、水膨潤性高分子物(
ダイスウェル、大日精化工業製、水膨潤度約120倍)
20部、架橋ポリオキシエチレン鎖含有ウレタン系水膨
潤性高分子物(水膨潤度約15倍)50部、黒サブ10
部、カオリン質クレー20部、沈降性炭酸カルシウム2
0部、界面活性剤10部、ステアリン酸1.5部、亜鉛
華5間プレス加硫を行なって、鉄心のついた円筒状の成
形物を得た。Example 6 100 parts of NBR (medium high nitrile), water-swellable polymer (
Dicewell, manufactured by Dainichiseika Kogyo, water swelling rate approximately 120 times)
20 parts, 50 parts of crosslinked polyoxyethylene chain-containing urethane water-swellable polymer (water swelling degree approximately 15 times), Black Sub 10
1 part, 20 parts of kaolin clay, 2 parts of precipitated calcium carbonate
0 parts, 10 parts of surfactant, 1.5 parts of stearic acid, and press vulcanization for 5 minutes to obtain a cylindrical molded product with an iron core.
このものを50℃の温水に約30日間浸漬したところ、
自重の約2倍に吸水、膨潤した。When this material was soaked in warm water at 50°C for about 30 days,
It absorbed water and swelled to about twice its own weight.
両断面を切り落とし、表面を研磨したものは、水棒とし
て適度の弾力性と強度を有しており、これを用いてオフ
セット印刷したところ、版面への給水は均一であり、印
刷の状態も良好であった。A material with both cross sections cut off and the surface polished has appropriate elasticity and strength as a water rod, and when offset printing was performed using this, the water supply to the plate surface was uniform and the printing condition was good. Met.
また、このものは水棒として耐久性も優れていた。This product also had excellent durability as a water stick.
実施例7
【−丘ユユニ
クロロプレンゴム 100部水膨潤性
高分子物(ダイスウェル、大日精化工業製、水膨潤度約
120倍) 20部架橋ポリオキシエチレン
鎖含有ウレタン系水膨潤性高分子物(水膨潤度約15倍
) 100部クレー 4
0部黒サブ 50部ステア
リン酸 0.5部界面活性剤
15部酸化マグネシウム
4部亜鉛華
5部加硫促進剤−220,8部
酷−丘ユヱユ
5BR1502100部
沈降性炭酸カルシウム 210部カーボン
ブラック 10部プロセスオイル
20部ステアリン酸
2部亜鉛華
5部硫黄 2.5
部加硫促進剤−DM 0 、8部鉄
心に接着剤を塗布した後、シート状にした上記配合(1
)のコンパウンドを鉄心に空気が入らぬように圧力をか
けながら外形65mmになるように巻きつける。次いで
配合(2)のコンパウンドをその上に包み込むように覆
う、これを加硫缶にて5に8/・ゴの蒸気圧で1時間1
5分加硫する。″′加硫物を研磨することにより、配合
(2)のゴム部分を取り去る。このものを50℃の温水
中で20日間浸漬すると、吸水、膨潤して外径62mm
のものが66mmになった。Example 7 [-Oka Yuunichloroprene rubber 100 parts Water-swellable polymer (Dicewell, manufactured by Dainichiseika Chemical Industries, water swelling degree approximately 120 times) 20 parts Urethane-based water-swellable polymer containing crosslinked polyoxyethylene chains material (water swelling degree approximately 15 times) 100 parts clay 4
0 parts black sub 50 parts stearic acid 0.5 parts surfactant
15 parts magnesium oxide
4 parts zinc white
5 parts Vulcanization accelerator - 220, 8 parts Yuyu 5BR 1502 100 parts Precipitated calcium carbonate 210 parts Carbon black 10 parts Process oil
20 parts stearic acid
2 parts zinc white
5 parts sulfur 2.5
Part vulcanization accelerator - DM 0, 8 parts After applying adhesive to the iron core, the above formulation (1 part) was made into a sheet form.
) Wrap the compound around the iron core to an outer diameter of 65 mm while applying pressure to prevent air from entering. Next, wrap the compound of formulation (2) over it, and heat it in a vulcanizer for 1 hour at a steam pressure of 5 to 8.
Vulcanize for 5 minutes. By polishing the vulcanizate, the rubber part of formulation (2) is removed. When this material is immersed in warm water at 50°C for 20 days, it absorbs water and swells to an outer diameter of 62 mm.
The one was changed to 66mm.
このものを64mmまで研磨して表面を平滑に仕上げた
。この吸水、膨潤物は水棒として適度の弾力性と強度を
有しており、これを用いてオフセット印刷したところ、
版面への給水は均一に行なわれ印刷の状態も良好であっ
た。また、このものは水棒としての耐久性も優れていた
。This material was polished to 64 mm to give a smooth surface. This water-absorbing and swelling material has appropriate elasticity and strength as a water rod, and when offset printing is performed using this material,
Water was supplied uniformly to the plate surface, and the printing condition was good. This product also had excellent durability as a water stick.
Claims (5)
た水膨潤性高分子物を主原料としてなることを特徴とす
る水膨潤性水棒。(1) A water-swellable water rod characterized in that the main raw materials are a rubber-like substance and a water-swellable polymer uniformly distributed in the rubber-like substance.
る特許請求の範囲第(1)項に記載の水棒。(2) The water rod according to claim (1), wherein the hydrophilic group of the water-swellable polymer is anionic.
いはノニオン型およびアニオン型の併用である特許請求
の範囲第(1)項に記載の水棒。(3) The water rod according to claim (1), wherein the hydrophilic group of the water-swellable polymer is of a nonionic type or a combination of a nonionic type and an anionic type.
個の(疎水性ポリマーセグメント)−(親水性セグメン
ト)−(疎水性ポリマーセグメント)の結合形式を有す
るブロックまたはグラフトコポリマーである特許請求の
範囲第(1)項に記載の水棒。(4) The water-swellable polymer has at least one
The water rod according to claim 1, which is a block or graft copolymer having a (hydrophobic polymer segment)-(hydrophilic segment)-(hydrophobic polymer segment) bonding format.
エチレン鎖含有ウレタン系である特許請求の範囲第(1
)項に記載の水棒。(5) Claim No. 1, wherein the nonionic water-swellable polymer is a urethane-based material containing a crosslinked polyoxyethylene chain.
) The water stick mentioned in section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9962985A JPS61258794A (en) | 1985-05-13 | 1985-05-13 | Water-swellable ducter roller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9962985A JPS61258794A (en) | 1985-05-13 | 1985-05-13 | Water-swellable ducter roller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61258794A true JPS61258794A (en) | 1986-11-17 |
JPH0336678B2 JPH0336678B2 (en) | 1991-06-03 |
Family
ID=14252373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9962985A Granted JPS61258794A (en) | 1985-05-13 | 1985-05-13 | Water-swellable ducter roller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61258794A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02130194A (en) * | 1988-11-10 | 1990-05-18 | Toshiba Mach Co Ltd | Dampening roll for printer |
US6409645B1 (en) * | 1997-06-13 | 2002-06-25 | Sw Paper Inc. | Roll cover |
US6874232B2 (en) | 2003-05-21 | 2005-04-05 | Stowe Woodward, Llc | Method for forming cover for industrial roll |
US10287731B2 (en) | 2005-11-08 | 2019-05-14 | Stowe Woodward Licensco Llc | Abrasion-resistant rubber roll cover with polyurethane coating |
-
1985
- 1985-05-13 JP JP9962985A patent/JPS61258794A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02130194A (en) * | 1988-11-10 | 1990-05-18 | Toshiba Mach Co Ltd | Dampening roll for printer |
US6409645B1 (en) * | 1997-06-13 | 2002-06-25 | Sw Paper Inc. | Roll cover |
US6874232B2 (en) | 2003-05-21 | 2005-04-05 | Stowe Woodward, Llc | Method for forming cover for industrial roll |
US10287731B2 (en) | 2005-11-08 | 2019-05-14 | Stowe Woodward Licensco Llc | Abrasion-resistant rubber roll cover with polyurethane coating |
Also Published As
Publication number | Publication date |
---|---|
JPH0336678B2 (en) | 1991-06-03 |
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