JPH0312257A - Apparatus and method for applying thermoplastic coating solution - Google Patents

Apparatus and method for applying thermoplastic coating solution

Info

Publication number
JPH0312257A
JPH0312257A JP14742889A JP14742889A JPH0312257A JP H0312257 A JPH0312257 A JP H0312257A JP 14742889 A JP14742889 A JP 14742889A JP 14742889 A JP14742889 A JP 14742889A JP H0312257 A JPH0312257 A JP H0312257A
Authority
JP
Japan
Prior art keywords
coating
roll
pressure roll
coating liquid
web
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
Application number
JP14742889A
Other languages
Japanese (ja)
Other versions
JP2834774B2 (en
Inventor
Kei Hasegawa
圭 長谷川
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
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Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP1147428A priority Critical patent/JP2834774B2/en
Publication of JPH0312257A publication Critical patent/JPH0312257A/en
Application granted granted Critical
Publication of JP2834774B2 publication Critical patent/JP2834774B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00Apparatus 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
    • B05C1/003Apparatus 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 incorporating means for heating or cooling the liquid or other fluent material

Abstract

PURPOSE:To hold coating appearance to a uniform state by controlling a coating amount by providing a heating means holding the pressure roll opposed to a coating roll and bringing a running web into pressure contact with the coating roll to predetermined temp. CONSTITUTION:A preliminarily melted thermoplastic coating solution 5 is heated by a coating solution heating means 4 to be held to definite temp. and supplied to the coating roll 7 opposed to a pressure roll 8 to bring a running web 9 into pressure contact with the pressure roll 8 in a sandwiched state to be transferred to the web 9. At this time, the pressure roll 9 is heated by a pressure roll heating means 10 to be held to predetermined temp. By this method, it is prevented that the pressure roll 8 is cooled by the running web 9 during coating and a coating state is changed and the pressure roll 8 is controlled to a stable coating state.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、走行するフィルム状のウェブ上に熱可塑性の
樹脂からなる塗工液を塗工する装置及び方法に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus and method for applying a coating liquid made of a thermoplastic resin onto a running film-like web.

[従来の技術] 走行するフィルム状のウェブ上に、ロールコーティング
により、種々の機能をもった塗工液を塗工する場合、塗
工液の粘度を調整することによってウェブ上の塗工状態
(塗工量、外観等)を調整することが一般的に行なわれ
ている。そして、塗工液が熱可塑性樹脂からなる場合に
は、塗工液は温度により粘度や他の物理特性が変化する
ので、これらを一定に保つには塗工工程中において塗工
液の温度を調整する必要がある。このため、従来は液パ
ン或いは液タンク等に塗工液加温手段を設け、これによ
り塗工液を加温することにより温度調整を行なっていた
。その−例を第4図に示している。同図における塗工工
程は、液タンク21において予め溶融された熱可塑性塗
工液が塗工液供給ホース22を経て一旦液パン23に蓄
積され、ここで塗工液加温手段24により塗工液25が
所定の温度に加温されてから、塗工液供給ロール26を
経て、コートロール27から加圧ロール28の作用によ
りウェブ29に転写されて塗工されるようになっている
[Prior Art] When coating liquids with various functions are applied onto a running film-like web by roll coating, the coating state on the web ( Coating amount, appearance, etc.) are generally adjusted. When the coating liquid is made of thermoplastic resin, the viscosity and other physical properties of the coating liquid change depending on the temperature, so in order to keep these constant, the temperature of the coating liquid must be adjusted during the coating process. Need to adjust. For this reason, in the past, a coating liquid heating means was provided in a liquid pan or a liquid tank, and the temperature was adjusted by heating the coating liquid. An example of this is shown in FIG. In the coating process in the figure, a thermoplastic coating liquid that has been melted in advance in a liquid tank 21 is temporarily accumulated in a liquid pan 23 via a coating liquid supply hose 22, and then is coated by a coating liquid heating means 24. After the liquid 25 is heated to a predetermined temperature, it passes through a coating liquid supply roll 26 and is transferred from a coating roll 27 to a web 29 by the action of a pressure roll 28 for coating.

さらに必要に応じて、塗工状態を調整するために、塗工
液供給ロール26とコートロール27の間隔を調整した
り、各ロールの周速を調整することにより塗工状態を調
整することも行なわれていた。
Furthermore, if necessary, the coating condition can be adjusted by adjusting the distance between the coating liquid supply roll 26 and the coat roll 27, or by adjusting the circumferential speed of each roll. It was being done.

[発明が解決しようとする課題] しかしながら、液パン或いは液タンク等に塗工液加温手
段を設け、これにより塗工液を加温する方式では、加圧
ロールは最初は塗工液や液パンからの輻射熱により温ま
っているが、塗工を開始すると走行するウェブによって
冷やされ、コートロールからウェブへ塗工液が転写する
時点での塗工条件が変化し、その結果として塗工状態も
変化してしまうという問題点があった。
[Problems to be Solved by the Invention] However, in a method in which a coating liquid heating means is provided in a liquid pan or a liquid tank, and the coating liquid is heated by this, the pressure roll is initially heated by the coating liquid or liquid. It is heated by radiant heat from the pan, but when coating starts, it is cooled by the running web, and the coating conditions change when the coating liquid is transferred from the coat roll to the web, and as a result, the coating condition changes. The problem was that it changed.

また、塗工液供給ロールとコートロールの間隔を調整し
たり、各ロールの周速を調整したりして塗工状態の調整
を行なうことは、機械的な調整作業を伴うこととなり非
常に面倒なものであった。
In addition, adjusting the coating condition by adjusting the distance between the coating liquid supply roll and the coat roll or adjusting the circumferential speed of each roll involves mechanical adjustment work, which is extremely troublesome. It was something.

本発明は、このような問題点に鑑みてなされたものであ
り、簡単な構成で塗工状態を調整することのできる熱可
塑性塗工液の塗工装置及び塗工方法を提供することを目
的としている。
The present invention has been made in view of these problems, and an object of the present invention is to provide a thermoplastic coating liquid coating device and coating method that can adjust the coating condition with a simple configuration. It is said that

[課題を解決するための手段] 上記目的を達成するために、本発明の熱可塑性塗工液の
塗工装置は、走行するウェブをコートロールと加圧ロー
ルの間で圧接し、該ウェブ上に熱可塑性塗工液を塗工す
る装置において、コートロールに対して供給される塗工
液をあらかじめ加温する塗工液加温手段を設けるととも
に、加圧ロールを加温する加圧ロール加温手段を設けて
なることを特徴とするものである。
[Means for Solving the Problems] In order to achieve the above object, the thermoplastic coating liquid coating device of the present invention presses a running web between a coat roll and a pressure roll, and applies pressure on the web. In an apparatus for applying a thermoplastic coating liquid to a coat roll, a coating liquid heating means is provided to preheat the coating liquid supplied to the coat roll, and a pressure roll heating means is provided to heat the pressure roll. It is characterized by being equipped with a heating means.

また、熱可塑性塗工液の塗工方法は、走行するウェブを
コートロールと加圧ロールの間で圧接し、該ウェブ上に
熱可塑性塗工液を塗工する方法において、コートロール
に対して供給される塗工液を塗工液加温手段によりあら
かじめ加温するとともに、塗工量を調整して塗工外観を
均一状態に調整するために、加圧ロールを加圧ロール加
温手段により加温して該加圧ロールの温度を所定の値に
保つことを特徴とするものである。
In addition, in the method of applying the thermoplastic coating liquid, a running web is pressed between a coat roll and a pressure roll, and the thermoplastic coating liquid is applied onto the web. The supplied coating liquid is preheated by a coating liquid heating means, and the pressure roll is heated by a pressure roll heating means in order to adjust the coating amount and make the coating appearance uniform. It is characterized in that the temperature of the pressure roll is maintained at a predetermined value by heating.

[作用コ 上記のように構成された熱可塑性塗工液の塗工装置及び
該装置を使用する塗工方法では、加圧ロールを加温する
ことにより、該加圧ロールと接触するウェブを加圧ロー
ルにより加温して、ウェブの塗工箇所における塗工条件
を調整する。
[Function] In the thermoplastic coating liquid coating apparatus configured as described above and the coating method using the apparatus, the web in contact with the pressure roll is heated by heating the pressure roll. The coating conditions at the coating portion of the web are adjusted by heating with a pressure roll.

[実施例] 以下、図面に示した実施例に基づいて本発明を説明する
[Example] The present invention will be described below based on the example shown in the drawings.

第1図は本発明の熱可塑性塗工液の塗工装置の一実施例
を示す側面図である。1は予め溶融した熱可塑性樹脂か
らなる熱可塑性塗工液を蓄えておく液タンクであり、供
給ホース2を通してその塗工液は液パン3にコンスタン
トに供給される。液パン3は液タンク1から塗工液をコ
ンスタントに供給されて常に一定量を蓄積しているとと
もに、塗工液加温手段4によりこの塗工液5を一定温度
に加温する。この塗工液加温装置4は電気抵抗発熱を利
用するものをはじめとして周知のものを用いることがで
きる。6は塗工液供給ロールであり、液パン3内の塗工
液5をコートロール7へ供給する。そして、コートロー
ル7は走行するウェブ9を加圧ロール8との間で圧接し
、塗工液供給ロール6から供給される塗工液をウェブ9
に転写する。
FIG. 1 is a side view showing an embodiment of the thermoplastic coating liquid coating apparatus of the present invention. Reference numeral 1 denotes a liquid tank for storing a thermoplastic coating liquid made of a previously melted thermoplastic resin, and the coating liquid is constantly supplied to a liquid pan 3 through a supply hose 2. The liquid pan 3 is constantly supplied with the coating liquid from the liquid tank 1 and always stores a certain amount of the coating liquid, and the coating liquid 5 is heated to a constant temperature by the coating liquid heating means 4. As the coating liquid heating device 4, well-known devices such as one utilizing electric resistance heat generation can be used. A coating liquid supply roll 6 supplies the coating liquid 5 in the liquid pan 3 to the coating roll 7. The coating roll 7 presses the running web 9 against the pressure roll 8, and applies the coating liquid supplied from the coating liquid supply roll 6 to the web 9.
Transfer to.

このようにして、加圧ロール8とコートロール7との間
を走行するウェブ9に対して塗工液が塗工される。ここ
で、この加圧ロール8は加圧ロール加温手段10により
加温され、その温度を所定の値に保たれるようになって
いる。
In this way, the coating liquid is applied to the web 9 running between the pressure roll 8 and the coating roll 7. Here, the pressure roll 8 is heated by a pressure roll heating means 10, and its temperature is maintained at a predetermined value.

加圧ロール加温手段10としては、電磁誘導作用により
加圧ロール8自体をジュール発熱させるとともに、加圧
ロール8肉厚内に一体に設けた気密構造のジャケット内
部に封入された熱媒体の潜熱による熱伝導効果を併用す
る方式のものを採用している。この方式のものによれば
、加圧ロール8の表面全体にわたってその温度を高精度
に均一化させることができる。また、場合によっては、
加圧ロール8内部に熱媒体通路を形成し、加圧ロール8
と一体の中空軸から回転シール継手を介してこの熱媒体
通路に熱媒体を供給することにより加圧ロール8を加熱
する熱媒体循環方式のものを採用してもよいし、加圧ロ
ール8内部に電気抵抗ヒータを備えた抵抗加熱方式を採
用してもよい。
The pressure roll heating means 10 generates Joule heat in the pressure roll 8 itself by electromagnetic induction, and generates latent heat of a heating medium sealed inside a jacket with an airtight structure integrally provided within the thickness of the pressure roll 8. A method that combines the heat conduction effect of According to this method, the temperature can be made uniform over the entire surface of the pressure roll 8 with high precision. Also, in some cases,
A heat medium passage is formed inside the pressure roll 8, and the pressure roll 8
A heat medium circulation system may be adopted in which the pressure roll 8 is heated by supplying a heat medium from a hollow shaft integrated with the heat medium passage through a rotary seal joint to the heat medium passage, or A resistance heating method equipped with an electric resistance heater may also be adopted.

また、本発明の塗工装置は、熱可塑性の塗工液をロール
を用いて塗工する工程であればどのような工程のものに
でも用いることが可能であり、第1図のようなダイレク
トロールコートに限らず、いわゆるリバースロールコー
ト、グラビアコート等にも用いることができる。第2図
はウェブの進行方向と逆方向に回転するコートロール7
により塗工するリバースロールコートに適用した他の実
施例を示す側面図である。ここで、同図の符号は第1図
実施例のものと同じものを表している。また、第3図は
本発明をグラビアコートに適用した他の実施例を示す側
面図であり、11はコートロールとしてのグラビアロー
ル、12はドクターである。
Furthermore, the coating device of the present invention can be used for any process in which a thermoplastic coating liquid is applied using a roll, and can be used for direct coating as shown in Figure 1. It can be used not only for roll coating but also for so-called reverse roll coating, gravure coating, etc. Figure 2 shows a coat roll 7 rotating in the opposite direction to the web traveling direction.
FIG. 3 is a side view showing another embodiment applied to reverse roll coating. Here, the reference numerals in the figure represent the same elements as those in the embodiment of FIG. Moreover, FIG. 3 is a side view showing another embodiment in which the present invention is applied to gravure coating, in which 11 is a gravure roll as a coating roll, and 12 is a doctor.

また、各ロールの配置は必ずしも第1〜3図と同じでな
くてもよいものである。
Further, the arrangement of each roll does not necessarily have to be the same as that shown in FIGS. 1 to 3.

本発明の熱可塑性塗工液の塗工方法は、上記の塗工装置
を使用し、ウェブ9をコートロール7と加圧ロール80
間に走行させてウェブ9上に熱可塑性塗工液を塗工する
。ここで、コートロール7に対して供給される塗工液を
塗工液加温手段4によりあらかじめ加温するとともに、
加圧ロール8を加圧ロール加温手段10により加温する
ことにより加圧ロール8に接触するウェブ9を加温する
The method for applying the thermoplastic coating liquid of the present invention uses the above-mentioned coating apparatus, and applies the web 9 between the coating roll 7 and the pressure roll 80.
The thermoplastic coating liquid is coated on the web 9 by running the web 9 in between. Here, the coating liquid supplied to the coat roll 7 is preheated by the coating liquid heating means 4, and
By heating the pressure roll 8 by the pressure roll heating means 10, the web 9 in contact with the pressure roll 8 is heated.

そして、加圧ロール8の温度を所定の値に保つことによ
り、ウェブ9に塗工される塗工量を調整して塗工外観を
均一状態に保つようにする。この場合、塗工外観が均一
となるような加圧ロール8の加温温度は、塗工液やウェ
ブ9の種類によってケースバイケースである。
By maintaining the temperature of the pressure roll 8 at a predetermined value, the amount of coating applied to the web 9 is adjusted to maintain a uniform coating appearance. In this case, the heating temperature of the pressure roll 8 at which the coating appearance becomes uniform varies from case to case depending on the coating liquid and the type of the web 9.

加圧ロール8の加温温度は、加圧ロール8とコートロー
ル70回転速度、ウェブ9の熱伝導度、ウェブ9と加圧
ロール8の接触面積等の条件を勘案して決めるものであ
るが、これらの諸条件を取り入れて設定温度を決めるこ
とは困難なので、温度の調整に当たっては、装置全体を
作動させてみて塗工状態が良好となる加温温度を見つけ
、この温度に設定するようにする。
The heating temperature of the pressure roll 8 is determined by taking into consideration conditions such as the rotation speed of the pressure roll 8 and the coating roll 70, the thermal conductivity of the web 9, and the contact area between the web 9 and the pressure roll 8. It is difficult to determine the set temperature by taking these various conditions into consideration, so when adjusting the temperature, try operating the entire device to find the heating temperature that will give a good coating condition, and then set it to this temperature. do.

なお、ウェブ9の塗工箇所における加圧ロール8の表面
温度を塗工液の温度と同じ程度の高さにすることが好ま
しい場合が多いが、加圧ロール8の表面温度が高すぎる
とウェブ9が変形してしまうこともあるので、加圧ロー
ル8の加温温度はウェブ9の材質を考慮して適宜上限を
決めておく必要がある。
Note that it is often preferable that the surface temperature of the pressure roll 8 at the coating location of the web 9 be as high as the temperature of the coating liquid, but if the surface temperature of the pressure roll 8 is too high, the web Since the web 9 may be deformed, it is necessary to appropriately determine the upper limit of the heating temperature of the pressure roll 8 in consideration of the material of the web 9.

[発明の効果] 本発明は、上述のとおり構成されているので次に記載す
る効果を奏する。
[Effects of the Invention] Since the present invention is configured as described above, it produces the following effects.

加圧ロールを所定の温度に保つ加圧ロール加温手段を設
けたことにより、走行するウェブによって塗工中に加圧
ロールが冷却されて塗工状態が変化するということがな
くなり、安定した塗工状態が得られる。すなわち、加圧
ロールの温度を所定の値に保つことにより、塗工量を調
整して塗工外観を均一状態に調整することができる。
By providing a pressure roll heating means that keeps the pressure roll at a predetermined temperature, the coating state will not change due to the pressure roll being cooled during coating by the running web, and stable coating can be achieved. The working status can be obtained. That is, by maintaining the temperature of the pressure roll at a predetermined value, the coating amount can be adjusted and the coating appearance can be adjusted to be uniform.

また、液パンや塗工液の輻射熱を利用せずに短時間で加
圧ロールを所定の温度まで加温できるので、塗工前の準
備時間が短縮できる。
Furthermore, since the pressure roll can be heated to a predetermined temperature in a short time without using the liquid pan or the radiant heat of the coating liquid, the preparation time before coating can be shortened.

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

第1図は本発明の熱可塑性塗工液の塗工装置の一実施例
を示す側面図、第2図は本発明をリバースロールコート
に適用した他の実施例を示す側面図、第3図は本発明を
グラビアコートに適用した他の実施例を示す側面図、第
4図は従来の塗工装置を示す側面図である。 1・・・液タンク、2・・・供給ホース、3・・・液パ
ン、4・・・塗工液加温手段、5・・・塗工液、6・・
・塗工液供給ロール、7・・・コートロール、8・・・
加圧ロール、9・・・ウェブ、10・・・加圧ロール加
温手段、11・・・グラビアロール、12・・・ドクタ
FIG. 1 is a side view showing one embodiment of the thermoplastic coating liquid coating apparatus of the present invention, FIG. 2 is a side view showing another embodiment in which the present invention is applied to reverse roll coating, and FIG. 4 is a side view showing another embodiment in which the present invention is applied to gravure coating, and FIG. 4 is a side view showing a conventional coating device. DESCRIPTION OF SYMBOLS 1...Liquid tank, 2...Supply hose, 3...Liquid pan, 4...Coating liquid heating means, 5...Coating liquid, 6...
・Coating liquid supply roll, 7... Coating roll, 8...
Pressure roll, 9... Web, 10... Pressure roll heating means, 11... Gravure roll, 12... Doctor

Claims (2)

【特許請求の範囲】[Claims] (1)走行するウェブをコートロールと加圧ロールの間
で圧接し、該ウェブ上に熱可塑性塗工液を塗工する装置
において、コートロールに対して供給される塗工液をあ
らかじめ加温する塗工液加温手段を設けるとともに、加
圧ロールを加温する加圧ロール加温手段を設けてなるこ
とを特徴とする熱可塑性塗工液の塗工装置。
(1) In a device that presses a running web between a coat roll and a pressure roll and applies a thermoplastic coating liquid onto the web, the coating liquid supplied to the coat roll is preheated. 1. A coating apparatus for a thermoplastic coating liquid, comprising: a coating liquid heating means for heating a pressure roll; and a pressure roll heating means for heating a pressure roll.
(2)走行するウェブをコートロールと加圧ロールの間
で圧接し、該ウェブ上に熱可塑性塗工液を塗工する方法
において、コートロールに対して供給される塗工液を塗
工液加温手段によりあらかじめ加温するとともに、塗工
量を調整して塗工外観を均一状態に調整するために、加
圧ロールを加圧ロール加温手段により加温して該加圧ロ
ールの温度を所定の値に保つことを特徴とする熱可塑性
塗工液の塗工方法。
(2) In a method in which a running web is brought into pressure contact between a coat roll and a pressure roll and a thermoplastic coating liquid is applied onto the web, the coating liquid supplied to the coat roll is In addition to heating the pressure roll in advance using a heating means, the temperature of the pressure roll is increased by heating the pressure roll using a pressure roll heating means in order to adjust the coating amount and make the coating appearance uniform. 1. A method for applying a thermoplastic coating liquid, which is characterized by maintaining the temperature at a predetermined value.
JP1147428A 1989-06-09 1989-06-09 Apparatus and method for applying thermoplastic coating liquid Expired - Lifetime JP2834774B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002320890A (en) * 2001-04-26 2002-11-05 Toppan Printing Co Ltd Coating device and method of manufacturing coated object
JP2003506226A (en) * 1999-08-07 2003-02-18 エム・アー・エヌ・ローラント・ドルックマシーネン・アクチエンゲゼルシャフト Temperature control device for coating agent
CN105413948A (en) * 2015-12-30 2016-03-23 浙江索凡胶粘制品有限公司 Energy saving adhesive product spreading machine
CN105436043A (en) * 2015-12-30 2016-03-30 浙江索凡胶粘制品有限公司 Gluing machine for processing adhesive product
CN105499059A (en) * 2015-12-30 2016-04-20 浙江索凡胶粘制品有限公司 Gluing machine for processing gluing products
CN105521908A (en) * 2015-12-30 2016-04-27 浙江索凡胶粘制品有限公司 Glue spreading machine based on processing of adhesive products

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003506226A (en) * 1999-08-07 2003-02-18 エム・アー・エヌ・ローラント・ドルックマシーネン・アクチエンゲゼルシャフト Temperature control device for coating agent
JP2002320890A (en) * 2001-04-26 2002-11-05 Toppan Printing Co Ltd Coating device and method of manufacturing coated object
CN105413948A (en) * 2015-12-30 2016-03-23 浙江索凡胶粘制品有限公司 Energy saving adhesive product spreading machine
CN105436043A (en) * 2015-12-30 2016-03-30 浙江索凡胶粘制品有限公司 Gluing machine for processing adhesive product
CN105499059A (en) * 2015-12-30 2016-04-20 浙江索凡胶粘制品有限公司 Gluing machine for processing gluing products
CN105521908A (en) * 2015-12-30 2016-04-27 浙江索凡胶粘制品有限公司 Glue spreading machine based on processing of adhesive products

Also Published As

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