JP2506783B2 - Coating film formation method - Google Patents
Coating film formation methodInfo
- Publication number
- JP2506783B2 JP2506783B2 JP62160006A JP16000687A JP2506783B2 JP 2506783 B2 JP2506783 B2 JP 2506783B2 JP 62160006 A JP62160006 A JP 62160006A JP 16000687 A JP16000687 A JP 16000687A JP 2506783 B2 JP2506783 B2 JP 2506783B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- surfactant
- coating film
- drying
- coating 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/38207—Contact thermal transfer or sublimation processes characterised by aspects not provided for in groups B41M5/385 - B41M5/395
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は界面活性剤を使用し塗膜表面を改質する際の
連続塗膜形成方法に関する。Description: TECHNICAL FIELD The present invention relates to a continuous coating film forming method for modifying a coating film surface using a surfactant.
従来の技術 昨今工程の簡略化等から、界面活性剤の高度な応用が
進んでおり、１回の塗工において塗膜の形成と表面の機
能化を実現する試みが行われている。2. Description of the Related Art In recent years, due to the simplification of processes and the like, advanced application of surfactants has advanced, and attempts have been made to realize the formation of a coating film and the functionalization of the surface in one coating.
例えば昇華転写型感熱記録用受像体として、 （ａ） 水溶性もしくは水分散性染料染着性樹脂 （ｂ） 分子内にシラン単量体を共重合したポリマーと
コロイダルシリカとの混合水分散液 （ｃ） 離型性水溶性界面活性剤 とからなる水系染着層形成組成物を基体上に塗工してな
る昇華転写型感熱記録用受像体がある。この離型性水溶
性界面活性剤は塗工・乾燥される際に染着層表面に偏
析、配向し少量で優れた離型効果を発揮する。従って転
写記録時にも染料転写体の色材層と受像体の染着層とが
融着することなく安定した剥離性を有する。For example, as an image receptor for sublimation transfer type thermal recording, (a) a water-soluble or water-dispersible dye-dyeing resin (b) a mixed aqueous dispersion of a polymer in which a silane monomer is copolymerized in the molecule and colloidal silica ( c) There is a sublimation transfer type heat-sensitive recording image receptor formed by coating an aqueous dyeing layer forming composition comprising a releasable water-soluble surfactant on a substrate. This releasing water-soluble surfactant segregates and orients on the surface of the dyeing layer during coating and drying, and exhibits an excellent releasing effect with a small amount. Therefore, even during transfer recording, the coloring material layer of the dye transfer body and the dyeing layer of the image receiving body do not melt and have stable peelability.
発明が解決しようとする問題点 従来の連続塗膜形成方法においては、塗工から乾燥ま
での時間や乾燥工程は界面活性剤の表面への配向という
観点では全く制御されておらず、界面活性剤の種類や塗
工条件によって、塗工から乾燥までの時間が界面活性剤
の表面への配向に必要な時間よりも短いために、界面活
性剤の本来の特性が発揮されない場合やそれを補うため
に必要以上の界面活性剤を添加し他の塗膜物性を悪化さ
せたり、塗工時の雰囲気温度の変化や塗工条件のばらつ
きにより界面活性剤の表面配向状態が変わり塗膜性能が
大きく変動する場合があった。Problems to be Solved by the Invention In the conventional continuous coating film forming method, the time from coating to drying and the drying process are not controlled at all from the viewpoint of the orientation of the surfactant on the surface. Depending on the type of coating and coating conditions, the time from coating to drying is shorter than the time required for orientation of the surfactant to the surface, so that the original characteristics of the surfactant may not be exhibited or to supplement it. The surface orientation of the surfactant changes due to changes in the ambient temperature during coating and variations in coating conditions due to the addition of an excessive amount of surfactant to There was a case to do.
問題点を解決するための手段 少なくとも、塗膜表面に配向することによりその機能
を発揮する界面活性剤を含有する塗液を用いて連続的塗
工手段により塗膜を基体上に連続的に形成する場合に、
塗工部から乾燥部までの所用時間を、塗工部から乾燥部
までの塗液環境における前記界面活性剤の塗液表面への
配向時間以上長く取る。Means for Solving Problems At least, a coating film containing a surfactant that exerts its function by orienting on the surface of the coating film is continuously formed on the substrate by a continuous coating means. If you want to
The required time from the coating part to the drying part is set longer than the orientation time of the surfactant to the surface of the coating liquid in the coating liquid environment from the coating part to the drying part.
作用 臨界ミセル濃度以上の界面活性剤を含む溶液の平衡状
態では、気液界面に親溶媒基を液相側にして界面活性剤
が飽和量まで配向し、余分の界面活性剤がミセル状態で
液相中に存在する。気液界面の面積の変動等に伴う気液
界面の界面活性剤量の過不足は液相中のミセルとの間で
常に調整される。気液界面に全く配向していない状態か
ら界面活性剤がミセルから気液界面に移行し平衡状態に
達するまでには一定時間（配向時間）が必要で、この時
間は界面活性剤の分子量、溶液の粘度、雰囲気温度等に
より大きく異なる。Action In the equilibrium state of a solution containing a surfactant with a concentration above the critical micelle concentration, the surfactant is oriented to the saturated amount with the solvophilic group on the liquid-phase interface at the gas-liquid interface, and the extra surfactant is dissolved in the micelle state. Exists in phase. Excess or shortage of the amount of the surfactant at the gas-liquid interface due to the change in the area of the gas-liquid interface or the like is always adjusted with the micelle in the liquid phase. It takes a certain time (orientation time) for the surfactant to move from the micelle to the gas-liquid interface and reach an equilibrium state when it is not aligned at the gas-liquid interface at all. This time is the molecular weight of the surfactant and the solution. It greatly varies depending on the viscosity, ambient temperature, etc.
塗工時には、塗工部において塗液が基体上に薄く塗布
されることによって塗液の気液界面の面積が飛躍的に増
大するため、塗工直後は塗液中に含まれる界面活性剤は
塗液表面の気液界面には殆ど配向していない状態にあ
り、この状態で乾燥してしまうと界面活性剤が塗膜表面
に殆ど配向せずに固定化されてしまい本来の機能が現れ
ない。At the time of coating, since the area of the gas-liquid interface of the coating liquid is dramatically increased by thinly coating the coating liquid on the substrate in the coating portion, the surfactant contained in the coating liquid immediately after coating is There is almost no orientation at the gas-liquid interface on the surface of the coating liquid, and if dried in this state, the surfactant will be immobilized on the surface of the coating film with little orientation, and the original function will not appear. .
従って、塗工部から乾燥部までの所用時間を、界面活
性剤が溶液中から気液表面に移行し平衡状態に達するに
要する時間以上確保することで、塗工部から乾燥部に到
達する間に界面活性剤は塗液表面に飽和量まで配向し、
この状態で乾燥固定化することで、その機能を充分に発
揮する。Therefore, by ensuring the required time from the coating part to the drying part for the time required for the surfactant to move from the solution to the gas-liquid surface and reach an equilibrium state, In addition, the surfactant is oriented on the surface of the coating liquid to a saturated amount,
By drying and fixing in this state, the function is sufficiently exhibited.
実施例 界面活性剤の塗液表面への配向時間は下記のようにし
て実験的に概略求められる。Example The orientation time of the surfactant on the surface of the coating liquid is roughly determined experimentally as follows.
塗液を基体上に塗工し、塗工から乾燥までの時間をパ
ラメータとしたときの物性変化、例えば接触角、従来例
で上げた昇華転写型感熱記録体の場合には記録後の染料
転写体点受像体間の剥離力等をとり、界面活性剤の機能
が安定して現れるのに必要な時間を配向時間とする。勿
論、塗液の組成、界面活性剤の種類、塗工から乾燥まで
の間の雰囲気温度等に大きく依存する。特に界面活性剤
の分子量或は分子サイズが大きくなると塗液中での動き
が遅くなるためにこの配向時間が長くなり、実際の塗工
装置で塗工する場合に本発明が効果を発揮する。市販の
シリコーメ東ｎ或はふっ素系界面活性剤は分子量の大き
いものが多い。Changes in physical properties when the coating liquid is applied on a substrate and the time from coating to drying is used as a parameter, for example, contact angle, dye transfer after recording in the case of a sublimation transfer type thermal recording medium raised in the conventional example. The orientation time is defined as the time required for the surfactant function to appear stably by taking the peeling force between body point image receivers. Of course, it largely depends on the composition of the coating liquid, the kind of the surfactant, the atmospheric temperature from the coating to the drying, and the like. In particular, when the molecular weight or the molecular size of the surfactant becomes large, the movement in the coating liquid becomes slow and the alignment time becomes long, and the present invention is effective when the coating is carried out by an actual coating device. Many of the commercially available silicon oxide or fluorine-based surfactants have large molecular weights.
以下具体的に配向時間を決める実験の結果を示す。 The results of experiments for specifically determining the orientation time are shown below.
まず以下の塗液を準備した。 First, the following coating liquid was prepared.
（塗液１） 飽和線状ポリエステル樹脂分散液（固形分25重量％）
（商品名：バイロナールMD-1200、東洋紡績（株）製、
固形分34重量％を水／エタノール＝1/1（重量）で希釈
したもの） ‥‥‥73.0重量部 シラン系ポリマー・コロイダルシリカ複合エマルジョン
（固形分43％、ポリマー／コロイダルシリカ＝70/30
（重量）、ポリマーTg約−17℃）（商品名：モビニール
8020、ヘキスト合成（株）製） ‥‥‥25.5重量部 シリコーン系界面活性剤（商品名:NUCシリコーンＬ−72
0、日本ユニカー（株）製） ‥‥‥1.4重量部 （塗液２） 塗液１に於て、シリコーン系界面活性剤（商品名:NUC
シリコーンＬ−720、日本ユニカー（株）製）を同じく
シリコーン系界面活性剤（商品名:NUCシリコーンＬ−70
01、日本ユニカー（株）製）に変えたもの （塗液３） 塗液１に於て、シリコーン系界面活性剤（商品名:NUC
シリコーンＬ−720、日本ユニカー（株）製）をふっ素
系界面活性剤（商品名：メガファックＦ−144D、大日本
インキ化学（株）製）に変えたもの この３種類の塗液を用い、ワイヤーバー＃22を使用
し、塗工から乾燥までの放置時温度を25、40℃、塗工か
ら乾燥までの放置時間を15、30、45、60秒として基体
（商品名：ユポ、王子油化合成紙（株）製）上に塗工し
受像体を形成した。(Coating liquid 1) Saturated linear polyester resin dispersion (solid content 25% by weight)
(Product name: Bayronal MD-1200, manufactured by Toyobo Co., Ltd.,
34% solids diluted with water / ethanol = 1/1 (weight)) 73.0 parts by weight Silane polymer / colloidal silica composite emulsion (43% solids, polymer / colloidal silica = 70/30)
(Weight), polymer Tg about -17 ° C) (Product name: Movinyl)
8020, Hoechst Synthetic Co., Ltd. 25.5 parts by weight Silicone surfactant (Brand name: NUC Silicone L-72)
0, manufactured by Nippon Unicar Co., Ltd. 1.4 parts by weight (Coating liquid 2) In coating liquid 1, a silicone-based surfactant (trade name: NUC
Silicone L-720, manufactured by Nippon Unicar Co., Ltd., is the same silicone surfactant (trade name: NUC Silicone L-70).
01, manufactured by Nippon Unicar Co., Ltd. (Coating liquid 3) In coating liquid 1, a silicone-based surfactant (trade name: NUC
Silicone L-720, manufactured by Nippon Unicar Co., Ltd., is replaced with a fluorine-based surfactant (trade name: Megafac F-144D, manufactured by Dainippon Ink and Chemicals, Inc.). Using wire bar # 22 and setting the standing temperature from coating to drying at 25, 40 ° C and the standing time from coating to drying at 15, 30, 45, 60 seconds (base name: YUPO, Oji Oil) An image receptor was formed by coating on a chemical synthetic paper (Co., Ltd.).
剥離性評価に使用した染料転写体は、転写基体厚さ６
μｍのPETフィルムの裏面に、エポキシアクリレート樹
脂（粘度150ポイズ）;12重量部、ネオペンチルグリコー
ルジアクリレート;3重量部、２−ヒドロキシ−２−メチ
ルプロプオフェノン;0.75重量部、ホワイトカーボン
（カープレーックスFPS−１）;3.0重量部、シリコーン
オイル;0.15重量部、界面活性剤（L7500,日本ユニカー
（株））;0.3重量部、酢酸エチル;100重量部からなる塗
工液をワイヤーバーで塗布、熱風乾燥後、高圧水銀灯で
硬化させたものを用いた。色材層はポリスルホン４重量
部、インドアニリン系昇華性染料I2重量部とともにモノ
クロルベンゼンに溶解後塗工染料重量が約0.3g/m2とな
るようにワイヤーバーで転写基体表面に塗工し転写体を
形成した。The dye transfer body used for the peelability evaluation had a transfer substrate thickness of 6
Epoxy acrylate resin (viscosity 150 poise); 12 parts by weight, neopentyl glycol diacrylate; 3 parts by weight, 2-hydroxy-2-methylpropophenone; 0.75 parts by weight, white carbon (KARPLEX) FPS-1); 3.0 parts by weight, silicone oil; 0.15 parts by weight, surfactant (L7500, Nippon Unicar Co., Ltd.); 0.3 parts by weight, ethyl acetate; It was dried with hot air and then cured with a high pressure mercury lamp. The coloring material layer is dissolved in monochlorobenzene together with 4 parts by weight of polysulfone and 2 parts by weight of indoaniline-based sublimable dye I, and then applied by a wire bar so that the weight of the applied dye is about 0.3 g / m 2 and transferred to the surface of the substrate. Formed body.
この染料転写体と準備した各受像体を下記の記録条件
で記録を行いこのときの180°方向に剥離するときの剥
離力をばねばかりで測定し、その最大値を記録幅で割っ
たものも剥離値とした。（単位g/cm） 主走査、副走査線密度:4ドット/mm 記録速度:33.3ms/ライン 記録電力:0.7W/dot 記録パルス幅:0〜8ms（1msごと） 結果を第１表に示す。 This dye transfer body and each image receptor prepared were recorded under the following recording conditions, and the peeling force when peeling in the 180 ° direction at this time was measured with a spring, and the maximum value was divided by the recording width. The peeling value was used. (Unit: g / cm) Main scanning and sub scanning Linear density: 4 dots / mm Recording speed: 33.3 ms / line Recording power: 0.7 W / dot Recording pulse width: 0-8 ms (1 ms intervals) The results are shown in Table 1. .
第１表の結果を基に行った実施例を以下説明する。 Examples performed based on the results in Table 1 will be described below.
塗工方法は３本リバースロールコーティング（塗工重
量約8g/m2）、塗工速度5m/分である。The coating method is three reverse roll coating (coating weight about 8 g / m 2 ), coating speed 5 m / min.
（実施例１） 塗液１を使用し、塗工部から乾燥部までのパスを4.0m
（所用時間に換算して48秒）、塗工直後に塗工面と反対
側から熱風を当て基体の温度がやく40℃となるようにし
た。剥離値を測定したところ約4g/cmであった。(Example 1) The coating liquid 1 was used, and the path from the coating part to the drying part was 4.0 m.
(Converted to the required time of 48 seconds), hot air was blown from the side opposite to the coated surface immediately after coating so that the temperature of the substrate was 40 ° C. When the peeling value was measured, it was about 4 g / cm.
（比較例１） 塗液１を使用し、塗工部から乾燥部までのパスを1.5m
（所用時間に換算して18秒）とした。剥離値を測定しよ
うとしたが染料転写体色材層と受像体の染着層が融着し
測定不能であった。(Comparative Example 1) Coating liquid 1 was used, and the path from the coating part to the drying part was 1.5 m.
(18 seconds converted to required time). An attempt was made to measure the peeling value, but the dye transfer body coloring material layer and the dyeing layer of the image receptor were fused and unmeasurable.
（実施例２） 塗液２を使用し、塗工部から乾燥部までのパスを1.5m
（所用時間に換算して18秒）、塗工直後に塗工面と反対
側から熱風を当て基体の温度がやく40℃となるようにし
た。剥離値を測定したところ約3g/cmであった。(Example 2) The coating liquid 2 was used, and the path from the coating part to the drying part was 1.5 m.
Immediately after coating (18 seconds in terms of required time), hot air was blown from the side opposite to the coated surface so that the temperature of the substrate was 40 ° C. The peel value was measured and found to be about 3 g / cm.
（比較例２） 実施例２において乾燥部の第１ノズルの開口部を巻取
り方向に1/20に絞り（吹き出し温度は同一）塗工を行っ
た。剥離値を測定しようとしたが染料転写体色材層と受
像体の染着層が融着し測定不能であった。(Comparative Example 2) In Example 2, coating was performed by squeezing the opening of the first nozzle in the drying section to 1/20 in the winding direction (the blowing temperature was the same). An attempt was made to measure the peeling value, but the dye transfer body coloring material layer and the dyeing layer of the image receptor were fused and unmeasurable.
発明の効果 本発明によれば、少なくとも、塗膜表面に配向するこ
とによりその機能を発揮する界面活性剤を含有する塗液
を用いて連続的塗工手段により塗膜を基体上に連続的に
形成する場合に、塗工部から乾燥部までの所用時間を、
塗工部から乾燥部までの塗液環境における前記界面活性
剤の塗液表面への配向時間以上長く取ることにより、界
面活性剤は塗液表面に飽和量まで配向し、この状態で乾
燥固定化することで、少量の添加量でかつ安定にその機
能を充分に発揮することができる。EFFECTS OF THE INVENTION According to the present invention, a coating film is continuously formed on a substrate by a continuous coating means using a coating liquid containing at least a surfactant that exerts its function by being oriented on the surface of the coating film. When forming, the required time from the coating section to the drying section,
By taking longer than the orientation time of the surfactant to the surface of the coating liquid in the coating liquid environment from the coating part to the drying part, the surfactant is oriented to the coating liquid surface to a saturated amount, and in this state it is dried and immobilized. By doing so, the function can be sufficiently exerted stably with a small amount of addition.
Claims (6)
りその機能を発揮する界面活性剤を含有する塗液を用い
て連続的塗工手段により塗膜を基体上に連続的に形成す
る場合に、塗工部から乾燥部までの所用時間を、塗工部
から乾燥部までの塗液環境における前記界面活性剤の塗
液表面への配向時間以上長く取ることを特徴とする塗膜
形成方法。1. When at least a coating film is continuously formed on a substrate by a continuous coating means using a coating liquid containing a surfactant that exerts its function by being oriented on the surface of the coating film. A coating film forming method, wherein the time required from the coating part to the drying part is set longer than the alignment time of the surfactant to the coating liquid surface in the coating liquid environment from the coating part to the drying part.
化されるまで塗液表面に配向した界面活性剤の配列を乱
さない範囲に於てその風圧並びに温度を制御した乾燥を
行うことを特徴とする特許請求の範囲第１項記載の塗膜
形成方法。2. Drying in which the wind pressure and temperature are controlled within a range that does not disturb the arrangement of the surfactant oriented on the coating liquid surface from the start of drying until the surfactant is fixed on the coating film surface. The method for forming a coating film according to claim 1, wherein:
を特徴とする特許請求の範囲第１項記載の塗膜形成方
法。3. The coating film forming method according to claim 1, wherein the surfactant has a molecular weight of 1000 or more.
ることを特徴とする特許請求の範囲第１項記載の塗膜形
成方法。4. The coating film forming method according to claim 1, wherein the surfactant is a silicone-based surfactant.
とを特徴とする特許請求の範囲第１項記載の塗膜形成方
法。5. The coating film forming method according to claim 1, wherein the surfactant is a fluorine-based surfactant.
10％以上含有することを特徴とする特許請求の範囲第１
項記載の塗膜形成方法。6. A resin component dissolved or dispersed in a coating liquid
Claim 1 characterized by containing 10% or more
The method for forming a coating film according to the item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62160006A JP2506783B2 (en) | 1987-06-26 | 1987-06-26 | Coating film formation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62160006A JP2506783B2 (en) | 1987-06-26 | 1987-06-26 | Coating film formation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS644388A JPS644388A (en) | 1989-01-09 |
| JP2506783B2 true JP2506783B2 (en) | 1996-06-12 |
Family
ID=15705938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62160006A Expired - Fee Related JP2506783B2 (en) | 1987-06-26 | 1987-06-26 | Coating film formation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2506783B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4493546B2 (en) * | 2004-05-11 | 2010-06-30 | 大日本印刷株式会社 | Thermal transfer image receiving sheet |
| US7470649B2 (en) * | 2004-05-11 | 2008-12-30 | Konica Minolta Photo Imaging, Inc. | Thermal transfer image receiving sheet |
-
1987
- 1987-06-26 JP JP62160006A patent/JP2506783B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS644388A (en) | 1989-01-09 |
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