JPS5973073A - Gravure coater for web - Google Patents
Gravure coater for webInfo
- Publication number
- JPS5973073A JPS5973073A JP16900183A JP16900183A JPS5973073A JP S5973073 A JPS5973073 A JP S5973073A JP 16900183 A JP16900183 A JP 16900183A JP 16900183 A JP16900183 A JP 16900183A JP S5973073 A JPS5973073 A JP S5973073A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- web
- paint
- press drum
- roller
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
Landscapes
- Coating Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、ウェブに各種の塗料をグラビア塗布法によ
り塗布する装置に係り、ウェブの一端部に塗料が過剰に
転移付着することを防止しようとするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for applying various paints to a web by gravure coating, and is intended to prevent excessive transfer and adhesion of paint to one end of the web.
例えば、各種の磁気テープカートリッジに組込まれる磁
気テープは、ポリエステルフィルムなどの広幅無端状の
ウェブにグラビア塗布法により磁性塗料を傾斜筋目状に
一旦転移塗布し、つぎに掻き均し装置にかけて一定厚さ
の磁性塗膜を形成し。For example, the magnetic tape that is incorporated into various magnetic tape cartridges is made by coating a wide endless web such as a polyester film with magnetic paint in the form of diagonal streaks using the gravure coating method, and then using a leveling device to obtain a uniform thickness. Forms a magnetic coating film.
しかるのち所定の長さ寸法幅に裁断する製造工程を経て
いる。After that, it goes through a manufacturing process in which it is cut into predetermined lengths and widths.
そのためのグラビア塗布装置としては、第１図に示すよ
うに、塗布ローラ１の外周面に広幅ノズル２を介して高
粘度の磁性塗料３を定量づつローラ全幅に亘って連続的
にイｊ（給しながらトククーブレード４で余剰分を掻き
落とし、ローラ外周面の塗布溝５にのみ磁性塗料３が残
存する状態とし。As shown in FIG. 1, a gravure coating device for this purpose continuously applies a high viscosity magnetic paint 3 to the outer circumferential surface of a coating roller 1 through a wide nozzle 2 in fixed amounts over the entire width of the roller. While doing so, scrape off the excess with the Tokuku blade 4, leaving the magnetic paint 3 remaining only in the coating groove 5 on the outer peripheral surface of the roller.
連続して送られてくるウェブ６をローラ外周面に圧胴７
を介して圧着することにより、ウェブ６の表面に前記塗
布溝５のパターンで塗料を斜めの筋目状に連続して転移
させるようになっている。The continuously fed web 6 is placed on the outer peripheral surface of the roller by an impression cylinder 7.
By pressing the coating material through the web 6, the coating material is continuously transferred to the surface of the web 6 in the form of diagonal lines in the pattern of the coating grooves 5.
しかし、従来のグラビア塗布装置では、第２図に示すよ
うに、塗布溝５が塗布ローラ１の全幅に亘って傾斜状に
形成されており、そのうえでつ工プロか塗布溝５の存在
幅より小幅に設定されていた。しかるに、塗料３か１本
の塗布溝５からウェブ６に転移する有り様に注目すると
、ゴム製の圧胴７は塗布ローラ１に圧接してこの圧接部
でば圧胴７の表面か塗布溝５内に凹入するため、塗布溝
５内の塗料が圧縮を受けて圧胴７と塗布ローラ１の回転
で前記圧接部が移動してゆくに従って、圧縮を受けた塗
料は言わばチューブから練り歯みがきが押し出される要
領で塗布溝５に沿って押し流され、最終的に塗布ローラ
１上の端部にまで移動してここに滞留する。かかる塗布
ローラ１の端部にウェブ６の一端部６ａが対向している
場合、過剰に滞留した塗料がそのままウェブ６の一端部
６ａに過剰に転移塗布されてしまうことがあった。However, in the conventional gravure coating apparatus, as shown in FIG. It was set to . However, if we pay attention to how the coating material 3 is transferred from the coating groove 5 to the web 6, the rubber impression cylinder 7 is in pressure contact with the coating roller 1, and at this pressure contact part, the surface of the impression cylinder 7 or the coating groove 5 is transferred. Since the paint in the coating groove 5 is recessed inward, the paint in the coating groove 5 is compressed, and as the pressure contact portion moves due to the rotation of the impression cylinder 7 and the coating roller 1, the compressed paint is removed from the tube, so to speak, as toothpaste. It is pushed along the coating groove 5 as if being pushed out, and finally moves to the end above the coating roller 1 and stays there. When one end 6a of the web 6 is opposed to the end of the coating roller 1, excessively retained paint may be transferred and coated onto the one end 6a of the web 6.
ウェブ６の一端部６ａに過剰の塗料が塗布されたままで
あると、製品磁気テープの磁性塗膜に塗布厚みむらを生
じ１品質上杆ましからざる影響を与える。そこで、従来
ではウェブ塗料面を掻き均し処理するに先だって、ウェ
ブ６の一端部６ａから過剰に塗布された塗料を播き取っ
ていた。しかし、塗料の過剰塗着ｊ量は必ずしも一定で
はなく。If excessive paint remains applied to one end 6a of the web 6, the magnetic coating film of the product magnetic tape will have uneven coating thickness, which will have an undesirable effect on quality. Therefore, conventionally, before the web paint surface is scraped and leveled, the excessively applied paint is removed from one end 6a of the web 6. However, the amount of excess paint applied is not necessarily constant.
その播き取り量の調整かまた格別に困難であり。Adjusting the amount of sowing is also extremely difficult.
ウェブ６の塗布厚を全面に亘って完全に均一化できなか
った。塗布厚の完全均一・化を図るためには。The coating thickness of the web 6 could not be made completely uniform over the entire surface. In order to achieve completely uniform coating thickness.
ウェブ６の不良端部６ａを大きく除去するより他なかっ
た。There was no choice but to largely remove the defective end portion 6a of the web 6.
この発明は、かかる実情に鑑みてなされたものであり、
圧胴より長い塗布ローラを使用し、この塗布ローラの両
端のうち、少なくとも塗布溝における塗料の押し流され
方向側の端部に平坦部を残して塗布溝部を形成し、その
平坦部を圧胴にりＪ向させることによって、各塗布溝か
ら押し流されてくる余剰の塗料を平坦部分乙こ薄く塗布
するものとし、以て余剰の塗料をウェブに薄く転移させ
て従来の問題点を効果的に解決しｊ８るようにしたもの
である。This invention was made in view of such circumstances,
A coating roller that is longer than the impression cylinder is used, and a coating groove is formed by leaving a flat part at least at the end of the application roller in the direction in which the paint is swept away in the coating groove, and the flat part is attached to the impression cylinder. By directing the web in the J direction, the excess paint swept away from each coating groove is applied thinly to the flat areas, thereby effectively solving the problems of the conventional method by transferring the excess paint thinly onto the web. It was designed to do this.
以下、この発明の詳細を第３図ないし第５図に基づき説
明する。The details of this invention will be explained below with reference to FIGS. 3 to 5.
本発明に係るクラヒア塗布装置の基本構成は。The basic structure of the Clahia coating device according to the present invention is as follows.
第３図ないし第５図に示すごとく既に前述した通りのそ
れであり、圧胴７より長い塗布ローラ１を使用し、該塗
布ローラ１の表面の左右両端に平坦部９を残して、ミル
刻印法により前記圧胴７の長さの範囲内の長さで多数の
傾斜状の塗布溝５を刻設した塗布溝部８を有し、この塗
布溝部８を圧胴７より広幅のウェブ６をはさんで圧胴７
に対向させる。しかるときは、第５図に示すごとく塗布
ローラ１の塗布溝部８は、圧胴７の端縁より短い位置ま
で刻設されているので、ゴム製圧胴７の塗布溝５内への
弾性変形による凹入によって押し流された塗料３は塗布
ローラ１の平坦部９に流出するが１ この流出した塗料
３は平坦部９に薄（塗布されることになり、ウェブ６の
端部にば塗料が薄く転移されることになる。その結果、
ウェブ端部への厚塗布による巻き取り不整が抑制され、
ウェブの伸び変形なとを防止することができる。この場
合、前記平坦部９は塗布ローラ１の両端のうち。As shown in FIGS. 3 to 5, the method is as described above, using the coating roller 1 longer than the impression cylinder 7, and leaving flat portions 9 at both left and right ends of the surface of the coating roller 1. The coating groove part 8 has a plurality of inclined coating grooves 5 with a length within the length of the impression cylinder 7, and a web 6 wider than the impression cylinder 7 is sandwiched between the coating groove part 8. Impression cylinder 7
to face. In this case, as shown in FIG. 5, the coating groove 8 of the coating roller 1 is cut to a position shorter than the edge of the impression cylinder 7, so that elastic deformation of the rubber impression cylinder 7 into the coating groove 5 is prevented. The paint 3 washed away by the indentation flows out onto the flat part 9 of the application roller 1. However, this flowed out paint 3 is thinly applied to the flat part 9, and if the paint is not deposited on the end of the web 6. It will be transferred thinly.As a result,
Winding irregularities due to thick coating on the web edges are suppressed,
Elongation and deformation of the web can be prevented. In this case, the flat portion 9 is one of both ends of the application roller 1.
少なくとも塗布溝５における塗料３の押し流され方向側
の端部にあれば充分であり、その平坦部９と圧胴７を対
向させることによって好適に薄塗布か可能となる。It is sufficient if it is at least at the end of the coating groove 5 in the direction in which the coating material 3 is swept away, and by arranging the flat portion 9 and the impression cylinder 7 to face each other, it is possible to suitably apply a thin coating.
第１図はこの発明か対象とするグラヒア塗布装置の全体
概略説明図である。
第２図は従来構造例の正面図である。
第３図ないし第５図はこの発明に係る装置の具体例を示
すものであって、第３図は正面図、第４図はこの発明の
構成部材の一つである塗布ローラの一端部を示す拡大斜
視図、第５図はその要部拡大縦断正面図である。
１・・・・塗布ローラ、３・・・・塗料。
４・・・・ドクターブレード、５・・・塗布溝。
６・・・・ウェブ、７・・・・圧胴。
８・・・・塗布溝部、９・・・平坦部。
第２図
第３図
合
第４図
第５図FIG. 1 is an overall schematic explanatory diagram of a graphia coating apparatus to which the present invention is directed. FIG. 2 is a front view of a conventional structure example. 3 to 5 show specific examples of the apparatus according to the present invention, with FIG. 3 being a front view and FIG. 4 showing one end of the applicator roller, which is one of the constituent members of the present invention. FIG. 5 is an enlarged longitudinal sectional front view of the main part. 1... Application roller, 3... Paint. 4...Doctor blade, 5...Applying groove. 6...web, 7...impression cylinder. 8... Application groove portion, 9... Flat portion. Figure 2 Figure 3 Figure 4 Figure 5
Claims (1)
して傾斜する多数の塗布溝５を刻設した塗布溝部８を有
し、塗布ローラ１にウェブ６を圧胴７を介して圧着させ
、塗布溝５内の塗料３をウェブ６に筋目状に転移塗布さ
せるようにしたグラビア塗布装置において、前記圧胴７
より長い塗布ローラ１を使用し、この塗布ローラ１の両
端のうち、少なくとも塗布溝５における塗料３の押し流
され方向側の端部に平坦部９を残して塗布溝部８を形成
し。 この平坦部９を圧胴７と対向させたことを特徴とするウ
ェブのグラビア塗布装置。[Claims] +11 The coating roller 1 has a coating groove section 8 in which a large number of coating grooves 5 inclined with respect to the circumferential direction are carved on the outer circumferential surface of the coating roller 1, and the web 6 is placed on the coating roller 1 by an impression cylinder 7. In the gravure coating device, the coating material 3 in the coating groove 5 is transferred and coated on the web 6 in a streak-like manner by pressing the coating material 3 through the impression cylinder 7.
A longer coating roller 1 is used, and a coating groove portion 8 is formed by leaving a flat portion 9 at least at the end of the coating groove 5 on the side in the direction in which the paint 3 is swept away, of both ends of the coating roller 1. A web gravure coating device characterized in that the flat portion 9 is opposed to the impression cylinder 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16900183A JPS5973073A (en) | 1983-09-12 | 1983-09-12 | Gravure coater for web |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16900183A JPS5973073A (en) | 1983-09-12 | 1983-09-12 | Gravure coater for web |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5973073A true JPS5973073A (en) | 1984-04-25 |
Family
ID=15878505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16900183A Pending JPS5973073A (en) | 1983-09-12 | 1983-09-12 | Gravure coater for web |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5973073A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61239991A (en) * | 1985-04-16 | 1986-10-25 | Konishiroku Photo Ind Co Ltd | Preparation of thermal transfer recording medium |
| EP0453427A2 (en) * | 1990-04-19 | 1991-10-23 | Valmet Paper Machinery Inc. | Method for limitation of the width of coating in coating of paper or board and a device intended for carrying out the method |
| JPH03128463U (en) * | 1990-04-09 | 1991-12-25 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6140385B2 (en) * | 1985-08-08 | 1986-09-09 | Hasegawa T Co Ltd |
-
1983
- 1983-09-12 JP JP16900183A patent/JPS5973073A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6140385B2 (en) * | 1985-08-08 | 1986-09-09 | Hasegawa T Co Ltd |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61239991A (en) * | 1985-04-16 | 1986-10-25 | Konishiroku Photo Ind Co Ltd | Preparation of thermal transfer recording medium |
| JPH0448117B2 (en) * | 1985-04-16 | 1992-08-05 | Konishiroku Photo Ind | |
| JPH03128463U (en) * | 1990-04-09 | 1991-12-25 | ||
| EP0453427A2 (en) * | 1990-04-19 | 1991-10-23 | Valmet Paper Machinery Inc. | Method for limitation of the width of coating in coating of paper or board and a device intended for carrying out the method |
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