JPH0822412B2 - Coating device - Google Patents
Coating deviceInfo
- Publication number
- JPH0822412B2 JPH0822412B2 JP3494189A JP3494189A JPH0822412B2 JP H0822412 B2 JPH0822412 B2 JP H0822412B2 JP 3494189 A JP3494189 A JP 3494189A JP 3494189 A JP3494189 A JP 3494189A JP H0822412 B2 JPH0822412 B2 JP H0822412B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- web
- coating liquid
- nozzle
- liquid
- 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
- 238000000576 coating method Methods 0.000 title claims description 104
- 239000011248 coating agent Substances 0.000 title claims description 97
- 239000007788 liquid Substances 0.000 claims description 44
- 238000000034 method Methods 0.000 description 18
- 239000010408 film Substances 0.000 description 15
- 238000001125 extrusion Methods 0.000 description 6
- 238000003892 spreading Methods 0.000 description 6
- 239000011324 bead Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は写真用フィルム・印画紙等の写真感光材料や
写真製版材料，磁気録音テープ等の磁気記録材料・感圧
記録紙，感熱記録紙等記録材料の製造において、連続走
行する長尺可撓性支持体（以下「ウエブ」と称する）に
液状塗布組成物（以下「塗布液」と称する）を塗布する
装置の改良に関し、更に詳しくは改良されたスロットよ
り塗布液を吐出してビードを形成するいわゆるエキスト
ルージョン型塗布装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to photographic light-sensitive materials such as photographic film and photographic paper, photoengraving materials, magnetic recording materials such as magnetic recording tape, pressure-sensitive recording paper, and heat-sensitive recording paper. In the production of recording materials such as the above, regarding the improvement of the apparatus for applying the liquid coating composition (hereinafter referred to as "coating liquid") to the continuously running long flexible support (hereinafter referred to as "web"), The present invention relates to a so-called extrusion-type coating device that forms a bead by discharging a coating liquid from an improved slot.
従来より連続走行しているウエブに塗布液を塗布する
方法としては、各種の方法が提案されて来た。Conventionally, various methods have been proposed as a method of applying a coating solution to a continuously running web.
一般に塗布工程は、ウエブに塗布液を転移せしめる部
分（以下「アプリケーション系」という）とウエブに転
移された塗布液を所望の塗布量に計量する部分（以下
「計量系」という）とに分けて考えられるため、塗布方
法はアプリケーション系、計量系の相違により分類され
ていた。Generally, the coating process is divided into a part for transferring the coating liquid to the web (hereinafter referred to as an “application system”) and a part for measuring the coating liquid transferred to the web to a desired coating amount (hereinafter referred to as a “metering system”). For this reason, the application method was classified according to the difference between the application system and the measurement system.
アプリケーション系の相違に基づいて、ローラ塗布方
法、ディップ塗布方法、ファウンテン塗布方法等、計量
系の相違に基づいて、エアーナイフ塗布方法、ブレード
塗布方法、バー塗布方法等が知られていた。An air knife application method, a blade application method, a bar application method, and the like, based on differences in measurement systems, such as a roller application method, a dip application method, and a fountain application method, based on differences in application systems, have been known.
これらのなかでエキストルージョン塗布方法及びビー
ド塗布方法は、コーターが支持体と直接接触しない精密
な塗布方法として使用されてきた。エキストルージョン
塗布方法及びビード塗布方法のようにエキストルージョ
ン型コーターを用いる塗布方法及び装置に関しては例え
ば特公昭45−12390号公報，特公昭46−26236号公報，特
公昭47−24650号公報に開示されているようなエキスト
ルージョン多層塗布装置、特開昭50−142643号公報に開
示されている単層に関する塗布方法、あるいは特開昭56
−95363号公報，特開昭62−110776号公報に開示されて
いる吐出スロットが上向に位置している塗布方法及び装
置等数多くの特許が出願されている。Among them, the extrusion coating method and the bead coating method have been used as precise coating methods in which the coater does not come into direct contact with the support. The coating method and apparatus using the extrusion type coater such as the extrusion coating method and the bead coating method are disclosed in, for example, JP-B-45-12390, JP-B-46-26236, and JP-B-47-24650. Extrusion multi-layer coating apparatus as described above, a coating method for a single layer disclosed in JP-A-50-142643, or JP-A-56
A number of patents have been filed, such as the coating method and apparatus in which the discharge slot is located in the upward direction, which are disclosed in Japanese Patent Laid-Open No. 95363 and Japanese Patent Application Laid-Open No. 62-110776.
そしてまたウエブ端部の塗布厚塗り対策としては、特
開昭54−142248号公報には塗布膜両端部に発生する厚塗
部分を噴射気流による連続的な塗布層の拡延方法、又は
実開昭60−49949号公報にはウエブ端部の吸引ノズルに
よる塗布膜端部の厚塗り部を吸引しながら拡げる方法が
開示されている。As a countermeasure for thick coating of the edges of the web, JP-A-54-142248 discloses a method of continuously spreading the thick coating portions generated at both ends of the coating film by a jet stream, or a practical method. Japanese Unexamined Patent Publication No. 60-49949 discloses a method in which a suction nozzle at the end of the web is used to spread the thick coating portion at the end of the coating film while suctioning.
しかしながら、一定のスロットの液吐出口幅にて、そ
の幅以内の任意の幅のウエブに塗布液を塗布する場合に
は、そのウエブ幅に合わせて塗布液架橋を調節する方法
及び装置を用いることになるが、その場合においてもウ
エブのエッジに塗布液が付着する現象が現れ、更にそれ
により、バックアップローラのウエブエッジと接触する
部分の汚れを引き起こし、それがまたウエブ端部に相当
するバックアップローラ部分を汚すことにもなる。However, when the coating liquid is applied to a web of an arbitrary width within the width of the liquid discharge port of a fixed slot, use a method and apparatus for adjusting the coating liquid cross-linking according to the web width. However, even in that case, the phenomenon that the coating liquid adheres to the edge of the web appears, which further causes the portion of the backup roller that comes into contact with the web edge to become dirty, which also corresponds to the edge of the web. It will also stain the part.
本発明の目的は上記の従来の問題点を解消し、このよ
うなウエブエッジの汚れ及びそれに伴うバックアップロ
ーラの汚れを防止し、ウエブ端部の塗布厚塗部を対策
し、生産能率、製品得率の優れた塗布装置を提供するこ
とにある。The object of the present invention is to solve the above-mentioned conventional problems, prevent such dirt on the web edge and the dirt on the backup roller accompanying it, take measures against the thick coating portion at the end of the web, improve the production efficiency, and obtain the product. An object is to provide a coating device having an excellent rate.
本発明の上記目的は、 連続走行する支持体の表面にスロットより塗布液を供
給する塗布装置において、該支持体の端部に0.1〜2mmの
未塗布部分をつくるように前記支持体と前記スロットの
液吐出口間に形成される塗布液架橋部に対して噴出する
気体を当てる細管ノズルと該支持体端部の未塗布部分に
塗布面の内側より外側に向けて塗布膜端部の塗布液を押
し拡げるスリットノズルとを設けたことを特徴とする塗
布装置 により達成される。The above object of the present invention is, in a coating apparatus for supplying a coating liquid from a slot to the surface of a continuously running support, the support and the slot so as to form an uncoated portion of 0.1 to 2 mm at the end of the support. Of the coating liquid formed between the liquid discharge ports of the coating liquid and the coating liquid at the end of the coating film from the inside of the coating surface to the outside of the uncoated portion of the end of the support. It is achieved by a coating device characterized in that it is provided with a slit nozzle for pushing and spreading.
本発明における、連続走行する支持体の表面にスロッ
トより塗布液を供給する塗布装置において、該支持体の
端部に0.1〜2mmの未塗布部分をつくるように前記支持体
と前記スロットの液吐出口間に形成される塗布液架橋に
対して噴出する気体を当てる細管ノズルを配置するとい
うことは、細管ノズルの位置としては細管径，風速，塗
布スピード，塗布液物性，塗布量等によって変わるの
で、結果が得られるように配置することを示したもので
ある。In the coating apparatus for supplying the coating liquid from the slot to the surface of the continuously running support in the present invention, the liquid discharge of the support and the slot is made so as to form an uncoated portion of 0.1 to 2 mm at the end of the support. Arranging the thin tube nozzle that applies the jetting gas to the coating solution bridge formed between the outlets means that the position of the thin tube nozzle depends on the thin tube diameter, wind speed, coating speed, coating liquid physical properties, coating amount, etc. So it is shown to be arranged so that the result can be obtained.
また本発明において、支持体端部の未塗布部分に塗布
膜端部の塗布液を拡げるということは、細管ノズルから
気体を噴射させて未塗布部分を作った時に塗布膜端部の
塗布液が自然に未塗布部分に拡がる場合はその侭でよい
が（こういう場合が実際に有り得る）、塗布膜端部に塗
布液の厚塗部が残る場合には、厚塗部を平坦化し拡げる
ことが後工程の能率上又品質上必要である。したがっ
て、その装置としては既に特開昭54−142248号公報又は
実開昭60−49949号公報に開示しているような塗布面の
内側より外側に向けてのスリットノズルにより塗布膜の
塗布液を押し拡げる装置か、叉はウエブ端部の吸引ノズ
ルにより塗布膜端部の塗布液を吸引しながら拡げる装置
を設けることが目的達成のために必要である。Further, in the present invention, to spread the coating liquid at the coating film end portion to the uncoated portion at the support end portion means that the coating liquid at the coating film end portion is produced when the gas is jetted from the thin tube nozzle to form the uncoated portion. If it naturally spreads to the uncoated part, it may be possible (this may be the case), but if there is a thick coating part of the coating solution on the edge of the coating film, it may be necessary to flatten and spread the thick coating part. It is necessary in terms of process efficiency and quality. Therefore, as the device, the coating liquid of the coating film is applied by the slit nozzle from the inside to the outside of the coating surface as already disclosed in JP-A-54-142248 or JP-A-60-49949. In order to achieve the purpose, it is necessary to provide a device for expanding and spreading, or a device for expanding while spreading the coating liquid at the end of the coating film by a suction nozzle at the end of the web.
以下添付した図面により本発明の実施態様について詳
述する。本発明の塗布装置は、第１図に示す如く、連続
走行する支持体１の表面にエキストルージョン型コータ
ー４より塗布液を供給する塗布装置において、支持体１
の端部に0.1〜2mmの未塗布部分をつくるように支持体１
とコーター４の液吐出口間に形成される塗布液架橋部に
対して噴出する気体を当てる細管ノズル５と支持体１端
部の未塗布部分に塗布面の内側より外側に向けて塗布膜
端部の塗布液を押し拡げるスリットノズル13とを設けて
構成される。第３図は本発明の塗布装置の１実施例の細
管ノズルの部分だけを示した斜視図（ａ）と側面断面図
（ｂ）である。Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the coating apparatus of the present invention is a coating apparatus in which a coating solution is supplied from an extrusion type coater 4 to the surface of a continuously running support 1 in which the support 1
Support 1 so that an uncoated portion of 0.1 to 2 mm is created at the edge of
The thin film nozzle 5 that applies the gas to be jetted to the coating liquid bridging portion formed between the liquid discharge port of the coater 4 and the coater 4 And a slit nozzle (13) for pushing and spreading the coating liquid of the part. FIG. 3 is a perspective view (a) and a side sectional view (b) showing only the thin tube nozzle portion of one embodiment of the coating apparatus of the present invention.
第３図において、コーターはエキストルージョン型コ
ーター４で、ウエブ１の下面において塗布液架橋を形成
し塗布を行っている。In FIG. 3, the coater is an extrusion type coater 4, and coating is performed by forming a coating solution crosslink on the lower surface of the web 1.
また細管ノズル５を用いてノズルから噴射する気体を
ウエブエッジ７のウエブとコーターリップ面８との間に
形成される塗布液架橋部に当てる。上記気体により、通
常ウエブエッジ７で固定される塗布液架橋をウエブエッ
ジより0.1〜2mmほど内側に形成せしめることが可能とな
る。この上記ノズルより噴射される気体はコーターリッ
プ面８で0.1〜15m/sec,より好ましくは１〜5m/secの風
速で投射せしめることが好ましい。あまり風速が大きい
とビード端部の塗布液を吹き飛ばし、ミスト化し、塗布
膜の端部を乱し、塗布膜端部がノコギリ状になる等の現
象を起こす。Further, the gas jetted from the nozzle is applied to the coating liquid bridge portion formed between the web of the web edge 7 and the coater lip surface 8 by using the thin tube nozzle 5. The above gas makes it possible to form the coating liquid bridge, which is usually fixed at the web edge 7, inside the web edge by about 0.1 to 2 mm. It is preferable that the gas jetted from the nozzle is projected on the coater lip surface 8 at a wind speed of 0.1 to 15 m / sec, more preferably 1 to 5 m / sec. If the wind speed is too high, the coating solution at the end of the bead is blown off to form a mist, which disturbs the end of the coating film and causes the end of the coating film to be saw-toothed.
また、あまりに低すぎると、当然のことながら効果が
なくなり、ビードの端部はウエブエッジ７の端部で固定
されることになる。On the other hand, if it is too low, the effect is naturally lost, and the end of the bead is fixed at the end of the web edge 7.
ノズルは径が0.1〜4mmくらい、好ましくは0.5〜2mmの
円筒ノズルが好ましいが、他の形状のノズル例えば偏平
の形状のノズル等を用いることもできる。The nozzle is preferably a cylindrical nozzle having a diameter of about 0.1 to 4 mm, preferably 0.5 to 2 mm, but a nozzle having another shape, such as a flat nozzle, can be used.
また、細管ノズル５は第３図（ｂ）のようにウエブの
塗布面から噴射するか、もしくは第４図のようにウエブ
の反塗布面から噴射することもできる。Further, the thin tube nozzle 5 can be jetted from the coating surface of the web as shown in FIG. 3 (b) or can be jetted from the non-coating surface of the web as shown in FIG.
また、細管ノズル５はウエブ１の幅が左右に移動する
場合に対しては第２図のようにウエブのエッジ７の位置
をエッジポジション検出器９で検出し、ウエブのエッジ
７の左右移動に対応してガイドレール12に沿ってドライ
バー11を動かすことによって、エッジポジション検出器
９と細管ノズル５とが一体となって動き、細管ノズル５
がウエブエッジ７の位置に対応して幅方向に自動的に移
動する装置を備えることが好ましい。When the width of the web 1 moves to the left and right, the thin tube nozzle 5 detects the position of the edge 7 of the web by the edge position detector 9 as shown in FIG. Correspondingly, by moving the driver 11 along the guide rail 12, the edge position detector 9 and the thin tube nozzle 5 move integrally, and the thin tube nozzle 5
Is preferably provided with a device that automatically moves in the width direction corresponding to the position of the web edge 7.
第１図に本発明の塗布装置の斜視図（ａ）及び側面図
（ｂ）を示す。FIG. 1 shows a perspective view (a) and a side view (b) of the coating apparatus of the present invention.
塗布した後の未塗布部分形成後の該ウエブ端部まで塗
布液を押し拡げる装置が特開昭54−142248号公報に示す
ような方法または第１図（ａ），（ｂ）に示すように塗
布面の内側より塗布面外側に向けてのスリットノズル1
3,その噴出空気の気体配管14として配置される。An apparatus for spreading the coating liquid to the edge of the web after the formation of the uncoated portion after coating is disclosed in JP-A-54-142248, or as shown in FIGS. 1 (a) and 1 (b). Slit nozzle 1 from inside the coating surface to outside the coating surface
3, It is arranged as a gas pipe 14 for the jet air.
又実開昭60−49949号公報に開示されているような吸
引ノズルを用いて塗布膜端部の厚塗部を吸引しながら拡
げる方法を用いることも出来る。It is also possible to use a method of using a suction nozzle as disclosed in Japanese Utility Model Laid-Open No. Sho 60-49949 to spread the thick coating portion at the end portion of the coating film while suctioning.
これらも第２図に示すようにスリットノズル13を接続
アーム10でドライバー11に接続し、ウエブエッジ７の位
置に対応して幅方向に自動的に移動させる装置にするこ
とが好ましい。本発明に更に説明を付加すると、本発明
における塗布液としては特に限定されるものではなく、
高分子化合物の水または有機溶媒液，顔料水分散液，コ
ロイド溶液等が含まれる。また、塗布液の物性も特に限
定されるものではないが、ウエブ上に塗布された液の条
件としては粘度は低い方が適しており、100cps以下特に
50cps以下の状態が適している。表面張力も特に限定さ
れないが、50dyne/cm以下で好ましい結果が得られる。As shown in FIG. 2, it is preferable that the slit nozzle 13 is connected to the driver 11 by the connecting arm 10 to automatically move the slit nozzle 13 in the width direction according to the position of the web edge 7. Adding further description to the present invention, the coating liquid in the present invention is not particularly limited,
It includes water or an organic solvent solution of a polymer compound, an aqueous pigment dispersion, a colloid solution, and the like. Further, the physical properties of the coating liquid are not particularly limited, but a lower viscosity is suitable for the condition of the liquid coated on the web, and 100 cps or less is particularly preferable.
A condition of 50 cps or less is suitable. The surface tension is not particularly limited, but preferable results are obtained at 50 dyne / cm or less.
本発明におけるウエブとは紙，プラスチックフィル
ム，レジンコーティッド紙，アルミニウムウエブ，合成
紙等が含まれる。プラスチックフィルムの材質は、たと
えば、ポリエチレン，ポリプロピレン等のポリオレフィ
ン、ポリ酢酸ビニル，ポリ塩化ビニルとポリスチレン等
のビニル重合体、6,6−ナイロン,6−ナイロン等のポリ
アミド、ポリエチレンテレフタレート，ポリエチレン−
2,6−ナフタレート等のポリエステル、ポリカーボネー
ト、セルローストリアセテート，セルロースダイアセテ
ート等のセルロースアセテート等が使用される。またレ
ジンコーティッド紙に用いる樹脂としては、ポリエチレ
ンをはじめとするポリオレフィンが代表的であるが、必
ずしもこれに限定されない。The web in the present invention includes paper, plastic film, resin coated paper, aluminum web, synthetic paper and the like. The material of the plastic film is, for example, polyolefin such as polyethylene or polypropylene, polyvinyl acetate, vinyl polymer such as polyvinyl chloride and polystyrene, polyamide such as 6,6-nylon or 6-nylon, polyethylene terephthalate, polyethylene-
Polyester such as 2,6-naphthalate, polycarbonate, cellulose acetate such as cellulose triacetate, cellulose diacetate and the like are used. A typical resin used for the resin coated paper is a polyolefin such as polyethylene, but the resin is not limited to this.
本発明の効果を一層明瞭ならしめるために、実施例を
あげる。In order to further clarify the effects of the present invention, examples will be given.
実施例−１ 厚さ200μm,幅1000mmのポリエチレンテレフタレート
フィルムの表面に第１表に示す組成及び物性を有する塗
布液を第１図に示すような塗布装置を用いて、ウエブ１
の両端部より外側にはみ出したエキストルージョン型コ
ーター４のスロットの液吐出口より吐出される塗布液架
橋を形成させることなく（その方法．手段は如何なるも
のであっても良い）、塗布速度50m/min,40cc/m2で塗布
した。この際、細管ノズル５よりエアーをリップ先端部
で3.5m/secの風速でウエブ両端部に噴出させた。細管ノ
ズルは内径1.5mmのを用いた。この時ウエブエッジには
全く塗布液が付着せず塗布することが出来た。Example 1 A coating solution having the composition and physical properties shown in Table 1 was applied to the surface of a polyethylene terephthalate film having a thickness of 200 μm and a width of 1000 mm by using a coating apparatus as shown in FIG.
Without forming a coating liquid bridge discharged from the liquid discharge port of the slot of the extrusion type coater 4 protruding outside the both ends of the coating liquid (the method. Any means may be used), the coating speed 50 m / It was applied at min, 40cc / m 2 . At this time, air was ejected from the thin tube nozzle 5 to both ends of the web at a wind speed of 3.5 m / sec at the tip of the lip. The thin tube nozzle used had an inner diameter of 1.5 mm. At this time, the coating liquid could not be applied to the web edge and could be applied.
また、この際、ウエブ端部の塗残し幅は0.5mmとなる
ように細管ノズル位置を設定し、その後スリットノズル
13によって、未塗布部分に塗布膜端部の塗布液を押し拡
げ塗布膜をウエブ端部まで形成することができた。At this time, set the capillary nozzle position so that the unpainted width at the end of the web is 0.5 mm, and then set the slit nozzle.
By 13, the coating liquid at the end of the coating film was pushed and spread on the uncoated portion, and the coating film could be formed up to the end of the web.
比較例−１ 実施例−１に示した塗布液と同一条件で、但し細管ノ
ズルからのエアーは止めて塗布したところ、ウエブエッ
ジに第５図に示すようにウエブエッジ７の裏側のバック
アップローラ３に塗布液が付着して汚れ15を生じた。 Comparative Example-1 When the coating liquid was applied under the same conditions as those of the coating liquid shown in Example-1, except that the air from the thin tube nozzle was stopped, the backup roller 3 on the back side of the web edge 7 was applied to the web edge as shown in FIG. The coating liquid adhered to the to produce stain 15.
上記に説明したように、本発明の塗布装置によって、
ウエブ幅よりコータースロット幅が大なる場合において
も、ウエブエッジ及びローラに塗布液を付着させずに、
且つウエブ端部における塗布厚塗部による生産能率の低
下、製品品質の低下もなく、能率及び得率のよい塗布が
可能となった。As explained above, by the coating device of the present invention,
Even when the coater slot width is larger than the web width, without applying the coating liquid to the web edge and the roller,
In addition, the coating efficiency at the edge of the web was not reduced and the product quality was not deteriorated due to the thick coating portion.
第１図は本発明の塗布装置の１実施例の部分斜視図
（ａ）と側面図（ｂ）、第２図は第１図と同じく本発明
の塗布装置の別の実施例の側面図、第３図は本発明のウ
エブ端部に塗布液の塗残し部をつくるための細管ノズル
の部分のみについての塗布装置の１実施例の斜視図
（ａ），と側面図（ｂ）、第４図は第３図の位置を反対
側にした側面図、第５図は第１図において細管ノズルを
使用しない場合の塗布状況を示す斜視図である。 １……ウエブ、２……塗布済ウエブ ３……バックアップローラ ４……エキストルージョン型コーター ５……細管ノズル、６……配管 ７……ウエブエッジ ８……コーターリップ面 ９……エッジポジション検出器 10……接続アーム 11……ドライバー 12……ガイドレール 13……スリットノズル 14……気体配管 15……汚れ1 is a partial perspective view (a) and a side view (b) of an embodiment of the coating apparatus of the present invention, and FIG. 2 is a side view of another embodiment of the coating apparatus of the present invention, similar to FIG. FIG. 3 is a perspective view (a), a side view (b), and a fourth view of an embodiment of the coating apparatus only for the portion of the thin tube nozzle for forming the uncoated portion of the coating liquid on the end of the web of the present invention. 3 is a side view with the position of FIG. 3 on the opposite side, and FIG. 5 is a perspective view showing the coating state when the thin tube nozzle is not used in FIG. 1 ... Web 2 ... Coated web 3 ... Backup roller 4 ... Extrusion type coater 5 ... Thin tube nozzle, 6 ... Piping 7 ... Web edge 8 ... Coater lip surface 9 ... Edge position detection Container 10 …… Connection arm 11 …… Driver 12 …… Guide rail 13 …… Slit nozzle 14 …… Gas pipe 15 …… Dirt
Claims (1)
塗布液を供給する塗布装置において、該支持体の端部に
0.1〜2mmの未塗布部分をつくるように前記支持体と前記
スロットの液吐出口間に形成される塗布液架橋部に対し
て噴出する気体を当てる細管ノズルと該支持対端部の未
塗布部分に塗布面の内側より外側に向けて塗布膜端部の
塗布液を押し拡げるスリットノズルとを設けたことを特
徴とする塗布装置1. A coating apparatus for supplying a coating liquid from a slot to the surface of a continuously running support, wherein the end of the support is provided.
A thin tube nozzle that applies a gas ejected to a coating liquid bridge formed between the support and the liquid discharge port of the slot so as to form an uncoated portion of 0.1 to 2 mm, and an uncoated portion at the opposite end of the support. And a slit nozzle that spreads the coating liquid at the end of the coating film from the inside to the outside of the coating surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3494189A JPH0822412B2 (en) | 1989-02-16 | 1989-02-16 | Coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3494189A JPH0822412B2 (en) | 1989-02-16 | 1989-02-16 | Coating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02214568A JPH02214568A (en) | 1990-08-27 |
| JPH0822412B2 true JPH0822412B2 (en) | 1996-03-06 |
Family
ID=12428201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3494189A Expired - Lifetime JPH0822412B2 (en) | 1989-02-16 | 1989-02-16 | Coating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0822412B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583164B (en) * | 2016-12-21 | 2019-04-12 | 新昌县恒泰隆机械设备有限公司 | A kind of automatic assembly production chain of chess magnet dispensing |
-
1989
- 1989-02-16 JP JP3494189A patent/JPH0822412B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02214568A (en) | 1990-08-27 |
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