JPS5936568A - Roll coating method - Google Patents

Roll coating method

Info

Publication number
JPS5936568A
JPS5936568A JP14660482A JP14660482A JPS5936568A JP S5936568 A JPS5936568 A JP S5936568A JP 14660482 A JP14660482 A JP 14660482A JP 14660482 A JP14660482 A JP 14660482A JP S5936568 A JPS5936568 A JP S5936568A
Authority
JP
Japan
Prior art keywords
roll
coating
squeezing
coated
pressing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14660482A
Other languages
Japanese (ja)
Inventor
Kaoru Ono
薫 大野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP14660482A priority Critical patent/JPS5936568A/en
Publication of JPS5936568A publication Critical patent/JPS5936568A/en
Pending legal-status Critical Current

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  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

PURPOSE:To make the film thickness of coating liquid on a roll face uniform and to obtain an excellent product, by pressing the middle part of a squeezing roll by a pressing plate having a curved face, and further pressing a prescribed roll. CONSTITUTION:One or several pressing plates provided with curved faces are pressed against the middle part of a squeezing roll 18. Then, the squeezing roll 18 is pressed against a coating roll 14 at fixed pressure, and an object 20 to be coated is passed between the coating roll 14 and a backup roll 16. A coating liquid 12 is pulled out from a pan by the coating roll 14 and made into a film by the squeezing roll 18 and coated on the object. Accordingly, the film thickness becomes uniform, and an excellent coated product is obtained.

Description

【発明の詳細な説明】 本発明はロールコート法の改良に関するものである。ロ
ールコート法は塗工液を供給するロールに絞りロールを
押し当てることにより塗工量を調整するコート法の一種
である。ロールコ−)法にはスクイズコータ、リバース
コータ等があり、これらで塗工液を塗布する場合、塗工
量を減らすにはロール間のニップ圧を上げれば 。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in roll coating methods. The roll coating method is a type of coating method in which the coating amount is adjusted by pressing a squeezing roll against a roll that supplies a coating liquid. The roll coater method includes squeeze coaters, reverse coaters, etc. When applying the coating liquid with these, the amount of coating can be reduced by increasing the nip pressure between the rolls.

よい。good.

ところが、一般にニップ圧を上げても塗工液のハイドロ
ブレシャーによりロールが変形し、中央部のロール間隔
が広がって中央部の液の塗工量が軸受部に近い端部に比
して多くなる傾向がある。また、ロールがゴム製の場合
は摩耗、変形等のため高いニップ圧をかけてもロール長
手方向に塗工量を均一にすることはむずかしい。
However, even if the nip pressure is increased, the rolls are generally deformed due to the hydrobrasion of the coating fluid, and the gap between the rolls in the center increases, resulting in a larger amount of fluid being applied in the center than at the ends near the bearing. There is a tendency to Furthermore, if the roll is made of rubber, it is difficult to make the coating amount uniform in the longitudinal direction of the roll due to wear, deformation, etc. even if high nip pressure is applied.

本発明はかかる従来における欠点を解消するべくなされ
たものであ5゜ 以下、図面に基づいて本発明の実施例につき説明する。
The present invention has been made to eliminate such drawbacks in the prior art, and embodiments of the present invention will be described below with reference to the drawings.

第1図はダイレクトコート法に本発明を適用した場合の
説明図である。図において、(10)は塗工液(12)
を満したパン、(14)はコーティングロール、 (1
6)はバックアップロール、(is)ハ絞シロールであ
る。絞りロールは固定ロールであってもよいが、必要に
よりコーチイブロールに対して正転又は逆転させてもよ
い。
FIG. 1 is an explanatory diagram when the present invention is applied to a direct coating method. In the figure, (10) is the coating liquid (12)
Bread filled with (14) is a coated roll, (1
6) is a backup roll, (is) a shibori roll. The squeezing roll may be a fixed roll, but may be rotated forward or reverse relative to the coach roll, if necessary.

被塗工物(20)はコーティングロール(14) ドパ
ツクアップロール(16)との間を通され、塗工液(1
2)はパン内からコーティングロール(14)によって
引き出されつつ絞りロール(18)で膜状にされ被塗工
物に塗布されることになる。
The object to be coated (20) is passed between a coating roll (14) and a pump up roll (16), and is coated with a coating liquid (1).
2) is pulled out from the pan by a coating roll (14) and formed into a film by a squeezing roll (18), which is then applied to the object to be coated.

ここに、(22)は湾曲面を有するステンレス製押板で
あり、第2図でも示されるように絞り口半径と同じか又
はやや大きく設定されておシ、湾曲面の表面にはテフロ
ン等のプラスチックが貼り合わされている。
Here, (22) is a stainless steel press plate with a curved surface, and as shown in Fig. 2, the radius is set to be the same as or slightly larger than the orifice radius, and the curved surface is coated with Teflon or the like. Plastic is attached.

押板(22)の背後には案内棒(24)が固着されてお
シ、この棒が固定板(26)の孔(28)中に差し込ま
れている。固定板(26)はロールコート装置のフレー
ム(図示せず)に固定されておシ、案内棒の挿入孔間に
て雌ねじ(30)が設けられている。
A guide rod (24) is fixed to the back of the push plate (22), and this rod is inserted into a hole (28) in a fixed plate (26). The fixing plate (26) is fixed to a frame (not shown) of the roll coater, and is provided with a female thread (30) between the insertion holes of the guide rods.

雌ネジ(30)にはポル) (32)が差し込まれる。A pin (32) is inserted into the female screw (30).

しかして、ポル) (32)を回わすことにより押板の
絞りロール(18)に対する加圧力を加減することがで
きる。絞りロール(18)はコーティングロール(14
)に対し一定圧力で押し付けられているのヤ であるが、ハイドロプレシシによる中間部のロールの逃
げ、摩耗部又は変形部のスキ間等にょシロール間隔の広
がっている部分の押板(22)をポル) (32)で調
整することによって、コーティングロール(14)と絞
シロール(18)の間隔を長手方向に均一に修正する。
Thus, by rotating the roller (32), the pressing force of the press plate against the squeezing roll (18) can be adjusted. The squeezing roll (18) is the coating roll (14).
) is pressed under a constant pressure against the press plate (22), but the press plate (22) is used in areas where the distance between the rolls is wide, such as when the middle roll escapes due to hydropressure, or between gaps in worn or deformed areas. (32), the distance between the coating roll (14) and the drawing roll (18) is corrected uniformly in the longitudinal direction.

なお、ガイド棒(24)及び孔(28)は図示の如きポ
ルK 32”)及び雌ネジ(3o)の左右ではなくその
上下に設けてもよい。また、これらは押板(22)と共
に一組ないし複数組設ける。その場合、固定板(26)
は各組共通の構成とすることができる。
Note that the guide rod (24) and hole (28) may be provided above and below the pole K 32") and female screw (3o) instead of on the left and right as shown in the figure. Also, these may be provided together with the push plate (22). A set or multiple sets are provided.In that case, the fixing plate (26)
can have a common configuration for each group.

ポル) (32)もエアシリンダ又は油圧シリンダのロ
ッドとし、押板の加圧操作を空圧等で行なうようにして
もよい。
(32) may also be a rod of an air cylinder or a hydraulic cylinder, and the pressurizing operation of the push plate may be performed by pneumatic pressure or the like.

さらに、本発明に係る方法はダイレクトコート法のみな
らず第3図の如きオフセットロール法−)法、第4図の
如@!lバースロールコート法に亀適用しうる。第3図
において(34)はボトムロール、(36)はセンタロ
ール、(38)はバックマツプロールでアシ、絞シロー
ル(18)はボトムロールであって、押板(22)は絞
υ9−ラを介してボ)ムロールを加圧している。
Furthermore, the method according to the present invention is not limited to the direct coating method, but also the offset roll method as shown in FIG. 3, and the method as shown in FIG. It can be applied to the l-bar roll coating method. In Fig. 3, (34) is the bottom roll, (36) is the center roll, (38) is the back pine roll with reeds, the drawing roll (18) is the bottom roll, and the push plate (22) is the drawing υ9-roll. The bomb roll is pressurized through the

第4図において、(40)はコーティングロール、(4
2)はバックアップロール、(44)はドクタであシ、
押板(22)は絞シローラ(18)を介してコーティン
グローラ(40)を上から加圧している。
In FIG. 4, (40) is a coating roll; (40) is a coating roll;
2) is a backup role, (44) is a doctor,
The press plate (22) presses the coating roller (40) from above via the squeeze roller (18).

以上のように本発明は押板で絞υロールの中間部分を押
えるようにしたから、ローラ中間部においてとかく厚く
なりがちであった塗工液を薄くしたシ、あるいはロール
の摩耗等による不均一部分を解消したシして、塗膜を均
一化することができるのである; また、押板の絞りロールと接する箇所は湾曲面としたか
ら絞りロールとの接触部における変形をできるだけ防止
することができ、また押板による押圧効果ができるだけ
絞シロールとコーティングロール等とのニップ部に及ぶ
ようにすることができる。従って、塗工液のかき取りを
確実に行ない絞シローラの中間部における加圧と相まっ
てコーティングローラ等のローラ面上における塗工液の
膜厚をそれだけ均一化し、良質の塗工量を造ることがで
きるという効果を奏するものである。
As described above, since the present invention uses a press plate to press the middle part of the υ roll, it is possible to thin the coating liquid, which tends to be thick at the middle part of the roller, or to make it uneven due to wear of the roll. By partially eliminating this problem, the coating film can be made uniform; In addition, since the part of the push plate that contacts the squeeze roll is made into a curved surface, deformation at the contact part with the squeeze roll can be prevented as much as possible. In addition, the pressing effect of the press plate can be applied to the nip portion between the drawing roll and the coating roll as much as possible. Therefore, by reliably scraping off the coating liquid and applying pressure at the intermediate part of the squeezing roller, it is possible to uniformize the film thickness of the coating liquid on the surface of the coating roller, etc., and to produce a high-quality coating amount. This has the effect of making it possible.

最後に実施例を掲げる。Finally, examples are listed.

実施例 オフセットロール法(第3図)に利用して無溶剤アクリ
ルポリマ+モノマー系樹脂(粘度1000 cps )
の塗工を下記条件で行った。
Example Using the offset roll method (Figure 3), solvent-free acrylic polymer + monomer resin (viscosity 1000 cps)
The coating was carried out under the following conditions.

ボトムロール 210調φX500m (クロムメッキ
ロール) 絞クロール  65jg111(25麿−の鉄芯表面ゴ
ム)X500a 押 板    湾曲面の曲率半径32.5m、押 棒 
   ボルト MIO 本条件で塗ニスビード20 m>330 m7分、ボト
ム/センターロール回転比1〜1/3 で塗工した所、
19An”〜32汐の平滑な塗工が出来、左右の中央の
塗工量のプレ0.19An”以内の均一な塗工が出来た
Bottom roll 210mm diameter x 500m (chrome plated roll) Squeeze roll 65jg111 (25mm iron core surface rubber) x 500a Push plate Curved surface radius of curvature 32.5m, push rod
Bolt MIO Coated under these conditions with a varnish bead of 20 m>330 m for 7 minutes and a bottom/center roll rotation ratio of 1 to 1/3,
Smooth coating of 19 An" to 32 An" was achieved, and uniform coating was achieved within a pre-0.19 An" coating amount between the left and right centers.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はダイレクトコート法に本発明を適用した場合の
説明図、第2図は本発明を実施するだめの装置の分解斜
視図、第3図はオフセットロールコート法の説明図、 
第4図はリバースロールコート法の説明図である。 14 ・・・・・・・・・コーティングロール18 ・
・・・・曲絞シロール 20 ・・・・・・・・・被塗工物 22・・・・・・・・・押板
Fig. 1 is an explanatory diagram of the case where the present invention is applied to the direct coating method, Fig. 2 is an exploded perspective view of a device for carrying out the present invention, and Fig. 3 is an explanatory diagram of the offset roll coating method.
FIG. 4 is an explanatory diagram of the reverse roll coating method. 14 ...... Coating roll 18 ・
・・・・・・Curved drawing sheet roll 20 ・・・・・・・・・Workpiece 22・・・・・・Press plate

Claims (2)

【特許請求の範囲】[Claims] (1)所定のロールに絞シロールを押し当てることによ
り塗工量を調整するロールコート法において、湾曲面を
有する押板で上記絞シロールの中間部分を押えることに
より絞υロールの中間部分を上記所走の口・−ルの方へ
加圧することを特徴とする上記ロールコート法。
(1) In the roll coating method, in which the coating amount is adjusted by pressing a drawn roll against a predetermined roll, the middle part of the drawn roll is pressed down with a pressing plate having a curved surface, so that the middle part of the drawn roll is The above-mentioned roll coating method is characterized in that pressure is applied in the direction of the opening.
(2)上記絞シロールは複数個の押板で押えるようにし
た特許請求の範囲第1項記載のロールコート 法。
(2) The roll coating method according to claim 1, wherein the drawn roll is pressed by a plurality of pressing plates.
JP14660482A 1982-08-24 1982-08-24 Roll coating method Pending JPS5936568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14660482A JPS5936568A (en) 1982-08-24 1982-08-24 Roll coating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14660482A JPS5936568A (en) 1982-08-24 1982-08-24 Roll coating method

Publications (1)

Publication Number Publication Date
JPS5936568A true JPS5936568A (en) 1984-02-28

Family

ID=15411480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14660482A Pending JPS5936568A (en) 1982-08-24 1982-08-24 Roll coating method

Country Status (1)

Country Link
JP (1) JPS5936568A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6342764A (en) * 1986-08-11 1988-02-23 Nikkei:Kk Method and device for coating alumina on housing pot
JPH02237680A (en) * 1989-03-09 1990-09-20 Nec Kansai Ltd Coating method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6342764A (en) * 1986-08-11 1988-02-23 Nikkei:Kk Method and device for coating alumina on housing pot
JPH02237680A (en) * 1989-03-09 1990-09-20 Nec Kansai Ltd Coating method

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