JP3538692B2 - Carrier film for forming ceramic green sheets - Google Patents
Carrier film for forming ceramic green sheetsInfo
- Publication number
- JP3538692B2 JP3538692B2 JP16254896A JP16254896A JP3538692B2 JP 3538692 B2 JP3538692 B2 JP 3538692B2 JP 16254896 A JP16254896 A JP 16254896A JP 16254896 A JP16254896 A JP 16254896A JP 3538692 B2 JP3538692 B2 JP 3538692B2
- Authority
- JP
- Japan
- Prior art keywords
- carrier film
- ceramic green
- green sheet
- surface roughness
- coating
- 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
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、スラリー状のセラ
ミック原料をシート状にする際に用いられるセラミック
グリーンシート成形用キャリアフィルムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier film for forming a ceramic green sheet, which is used when a slurry-like ceramic raw material is formed into a sheet.
【０００２】[0002]
【従来の技術】一般に、セラミックグリーンシートの製
造方法として、キャスティング法があるが、この方法で
は、スラリー状の原料を、走行するキャリアフィルム上
に一定の厚みで塗布し、走行中にこれを乾燥させてセラ
ミックグリーンシートを成形し、さらに、このセラミッ
クグリーンシートをキャリアフィルムから剥離する。こ
のようなキャスティング法を適用する上で、シート成形
機が使用される。シート成形機はローラ等にてキャリア
フィルムを搬送するが、このときキャリアフィルムの塗
工面がローラ等に接触する。2. Description of the Related Art In general, there is a casting method as a method for producing a ceramic green sheet. In this method, a slurry-like raw material is applied to a traveling carrier film at a constant thickness and dried during traveling. Thus, a ceramic green sheet is formed, and the ceramic green sheet is peeled off from the carrier film. In applying such a casting method, a sheet forming machine is used. The sheet forming machine conveys the carrier film by rollers or the like, and at this time, the coated surface of the carrier film contacts the rollers or the like.
【０００３】[0003]
【発明が解決しようとする課題】ところが、従来のキャ
リアフィルムの表面粗さ（中心線平均粗さ）はＲａ＝
０．０２μｍ相当程度であり、一方、シート成形機等に
用いられているローラ等には表面粗さがＲａ＝０．４〜
０．８μｍ相当程度のものがある。このため、キャリア
フィルム搬送の際に、キャリアフィルムの塗工面が前記
ローラ等に接触すると、ときとして表面粗さの小さいキ
ャリアフィルム塗工面が表面粗さの大きいローラ等によ
って傷付けられるということがあった。However, the surface roughness (center line average roughness) of the conventional carrier film is Ra =
On the other hand, the surface roughness of a roller or the like used in a sheet forming machine or the like is Ra = 0.4 to 0.4 μm.
Some are equivalent to about 0.8 μm. For this reason, when the coated surface of the carrier film comes into contact with the roller or the like during transport of the carrier film, the coated surface of the carrier film having a small surface roughness may be sometimes damaged by the roller or the like having a large surface roughness. .
【０００４】この傷付いたキャリアフィルム塗工面上に
スラリー状のセラミック原料を塗布してセラミックグリ
ーンシートを成形すると、セラミックグリーンシートを
キャリアフィルムから剥離する際に傷の部分でセラミッ
クグリーンシートの成形性が劣るのみならず、シートが
切断され剥離不良となる。前記ローラ等の表面粗さを小
さくするためにローラ等を高精度加工したり、特殊処理
することも考えられるが、これらは加工コストや維持管
理の手間を要し、好ましくない。When a ceramic green sheet is formed by applying a slurry-like ceramic material on the damaged carrier film coated surface, the ceramic green sheet is formed at the scratched portion when the ceramic green sheet is peeled off from the carrier film. Not only is inferior, but also the sheet is cut, resulting in peeling failure. In order to reduce the surface roughness of the roller or the like, high precision processing of the roller or the like or special treatment may be considered. However, these are not preferred because they require processing cost and labor for maintenance.
【０００５】そこで、本発明の目的は、セラミックグリ
ーンシートの剥離不良が発生しにくく、成形性の良いセ
ラミックグリーンシート成形用キャリアフィルムを提供
することにある。Accordingly, an object of the present invention is to provide a ceramic green sheet molding carrier film which is less likely to cause peeling failure of the ceramic green sheet and has good moldability.
【０００６】[0006]
【課題を解決するための手段】以上の目的を達成するた
め、本発明に係るセラミックグリーンシート成形用キャ
リアフィルムは、スラリー状のセラミック原料を塗布す
る塗工面の表面粗さが、Ｒａ＝０．１μｍ相当以上であ
り、かつ、Ｒａ＝１μｍ相当以下であることを特徴とす
る。前記塗工面は、例えば、サンドブラストにより所定
の表面粗さに粗面化されていたり、微粒子を散布してコ
ート剤で被覆することにより所定の表面粗さに粗面化さ
れていたり、あるいは、キャリアフィルムに添加剤を混
合することにより所定の表面粗さに粗面化されている。Means for Solving the Problems To achieve the above object, the carrier film for forming a ceramic green sheet according to the present invention has a surface roughness Ra = 0. 1 μm or more
Ri and characterized der Rukoto Ra = 1 [mu] m equivalent or less. The coated surface is, for example, roughened to a predetermined surface roughness by sandblasting, or is roughened to a predetermined surface roughness by spraying fine particles and coating with a coating agent, or a carrier. The film is roughened to a predetermined surface roughness by mixing an additive into the film.
【０００７】[0007]
【作用】以上の構成により、キャリアフィルムの塗工面
が、シート成形機等に用いられているローラ等の表面と
略同じレベル以上の表面粗さとなり、ローラ等によって
キャリアフィルムの塗工面が傷付けられにくくなる。According to the above construction, the coated surface of the carrier film has a surface roughness substantially equal to or higher than the surface of a roller used in a sheet forming machine or the like, and the coated surface of the carrier film is damaged by the roller or the like. It becomes difficult.
【０００８】[0008]
【発明の実施の形態】以下、本発明に係るセラミックグ
リーンシート成形用キャリアフィルムの実施形態につい
て添付図面を参照して説明する。図１は、シート成形機
のコータ部分の概略構成図である。本実施形態のシート
成形機はリバースロールコータと称されるものであり、
一対の塗工ローラ１０，１１、バックアップローラ１
２、図示しないキャリアフィルム送り出しローラ等を含
む。ただし、シート成形機はこのタイプのものに限定す
るものではなく、例えばドクターブレードやナイフコー
タ等、いかなるものであってもよいことは言うまでもな
い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the carrier film for forming a ceramic green sheet according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a coater portion of a sheet forming machine. The sheet forming machine of the present embodiment is called a reverse roll coater,
A pair of coating rollers 10 and 11 and a backup roller 1
2. Includes a carrier film delivery roller (not shown). However, the sheet forming machine is not limited to this type, and it goes without saying that any type may be used, such as a doctor blade or a knife coater.
【０００９】一対の塗工ローラ１０，１１とバックアッ
プローラ１２はいずれも同一方向（本実施形態では時計
回り方向）に回転されるようになっている。これらのロ
ーラ１０〜１２やキャリアフィルム送り出しローラのい
ずれか、もしくは二つ以上の表面粗さは、Ｒａ＝０．４
〜０．８μｍ相当である。一対の塗工ローラ１０，１１
は所定の間隔を保って対向配置されており、塗工ローラ
１０，１１の隙間を通じてスラリー状のセラミック原料
５を一定厚みで流し出す。一方、キャリアフィルム１
は、送り出しローラからバックアップローラ１２に沿っ
て連続的に供給される。これによって、塗工ローラ１
０，１１の隙間を流れ出たセラミック原料５がキャリア
フィルム１の塗工面１ａ上に塗布され、セラミックグリ
ーンシート６が成形される。The pair of coating rollers 10, 11 and the backup roller 12 are both rotated in the same direction (clockwise in this embodiment). Any one of these rollers 10 to 12 and the carrier film delivery roller, or two or more of them have a surface roughness of Ra = 0.4.
０．８0.8 μm. A pair of coating rollers 10 and 11
Are arranged facing each other at a predetermined interval, and the slurry-like ceramic raw material 5 flows out at a constant thickness through the gap between the coating rollers 10 and 11. On the other hand, carrier film 1
Is continuously supplied from the feed roller along the backup roller 12. Thereby, the coating roller 1
The ceramic raw material 5 that has flowed through the gaps 0 and 11 is applied on the coating surface 1a of the carrier film 1 to form a ceramic green sheet 6.
【００１０】キャリアフィルム１上のセラミックグリー
ンシート６は、例えばキャリアフィルム１の走行中に乾
燥され、その後、キャリアフィルム１から剥離される。
一方、セラミックグリーンシート６が剥離されたキャリ
アフィルム１は、別の所に排出される。次に、キャリア
フィルム１について詳説する。キャリアフィルム１は樹
脂等からなり、その塗工面１ａは表面粗さがＲａ＝０．
１μｍ相当以上になるように粗面化処理が施されてい
る。本実施形態では、塗工面１ａの表面粗さを０．３μ
ｍに設定した。粗面化の方法としては、例えば、図２に
示すように、塗工面１ａをサンドブラスト等によって機
械的に荒らして粗面化する方法、あるいは図３に示すよ
うに、塗工面１ａに樹脂微粒子２を略均一に散布した
後、コート剤３で被覆して粗面化する方法、また、キャ
リアフィルム１に無機物等の添加剤を混合させて成形す
る方法等がある。The ceramic green sheet 6 on the carrier film 1 is dried, for example, while the carrier film 1 is running, and then is separated from the carrier film 1.
On the other hand, the carrier film 1 from which the ceramic green sheets 6 have been peeled is discharged to another place. Next, the carrier film 1 will be described in detail. The carrier film 1 is made of resin or the like, and the coated surface 1a has a surface roughness Ra = 0.
The surface is roughened so as to be 1 μm or more. In the present embodiment, the surface roughness of the coating surface 1a is 0.3 μm.
m. As a method of surface roughening, for example, as shown in FIG. 2, a method of mechanically roughening the coated surface 1a by sand blasting or the like to roughen the surface, or as shown in FIG. And then applying a coating agent 3 to make the surface rough, or a method in which an additive such as an inorganic substance is mixed into the carrier film 1 to form the mixture.
【００１１】このキャリアフィルム１をシート成形機に
て搬送した場合、塗工面１ａには１本の傷も付かなかっ
た。ところが、同じシート成形機を用いて、塗工面の表
面粗さがＲａ＝０．０２μｍ相当の従来のキャリアフィ
ルムを搬送した場合には、塗工面に約６０本の傷が付い
た。本実施形態のキャリアフィルム１は、塗工面１ａが
塗工ローラ１１の表面と略同じレベルの表面粗さである
ので、塗工面１ａが塗工ローラ１１に接触しても、塗工
ローラ１１によって塗工面１ａが傷付けられなくなった
のである。When the carrier film 1 was conveyed by a sheet forming machine, no single scratch was formed on the coated surface 1a. However, when a conventional carrier film having a surface roughness of Ra = 0.02 μm was conveyed using the same sheet forming machine, about 60 scratches were made on the coated surface. In the carrier film 1 of the present embodiment, since the coating surface 1a has substantially the same level of surface roughness as the surface of the coating roller 11, even if the coating surface 1a contacts the coating roller 11, The coated surface 1a is no longer damaged.
【００１２】なお、キャリアフィルム１に傷が付くこと
を防止するためには、塗工面１ａの表面粗さを塗工ロー
ラ１１の表面と略同じレベル以上の表面粗さにすればよ
く、本実施形態の場合、塗工面１ａの表面粗さの上限は
１μｍ程度に抑えるのが望ましい。塗工面１ａの表面粗
さが大きくなると、得られるセラミックグリーンシート
の厚みのバラツキが大きくなるからである。In order to prevent the carrier film 1 from being damaged, the surface roughness of the coating surface 1a may be set to a surface roughness substantially equal to or higher than the surface of the coating roller 11. In the case of the form, the upper limit of the surface roughness of the coated surface 1a is desirably suppressed to about 1 μm. This is because when the surface roughness of the coating surface 1a increases, the thickness variation of the obtained ceramic green sheet increases.
【００１３】なお、本発明に係るセラミックグリーンシ
ート成形用キャリアフィルムは前記実施形態に限定する
ものではなく、その要旨の範囲内で種々に変更すること
ができる。The carrier film for forming a ceramic green sheet according to the present invention is not limited to the above embodiment, but can be variously modified within the scope of the invention.
【００１４】[0014]
【発明の効果】以上の説明で明らかなように、本発明に
よれば、セラミックグリーンシート成形用キャリアフィ
ルムの塗工面の表面粗さをＲａ＝０．１μｍ相当以上
に、かつ、Ｒａ＝１μｍ相当以下にしたので、塗工面が
シート成形機のローラ等の表面と略同じレベルの表面粗
さとなり、シート成形機のローラ等によって塗工面が傷
付けられにくくなる。この結果、キャリアフィルムから
セラミックグリーンシートの成形性に優れ、剥離する際
の剥離不良が発生しにくいキャリアフィルムを得ること
ができる。As is apparent from the above description, according to the present invention, the surface roughness of the coated surface of the carrier film for forming a ceramic green sheet is Ra = 0.1 μm or more and Ra = 1 μm or more. Because of the following , the coated surface has substantially the same level of surface roughness as the surface of the roller or the like of the sheet forming machine, and the coated surface is less likely to be damaged by the roller or the like of the sheet forming machine. As a result, it is possible to obtain a carrier film which is excellent in the formability of the ceramic green sheet from the carrier film and is less likely to cause peeling failure upon peeling.
【図１】シート成形機のコータ部分の概略構成図。FIG. 1 is a schematic configuration diagram of a coater portion of a sheet forming machine.
【図２】本発明に係るセラミックグリーンシート成形用
キャリアフィルムの一実施形態を示す断面図。FIG. 2 is a cross-sectional view showing an embodiment of the carrier film for forming a ceramic green sheet according to the present invention.
【図３】本発明に係るセラミックグリーンシート成形用
キャリアフィルムの別の実施形態を示す断面図。FIG. 3 is a sectional view showing another embodiment of the carrier film for forming a ceramic green sheet according to the present invention.
１…セラミックグリーンシート成形用キャリアフィルム １ａ…塗工面 1. Carrier film for forming ceramic green sheet 1a: Coated surface
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B28B 1/14 - 1/16 B28B 1/30 B05C 1/04 - 1/16 ＷＰＩ（ＤＩＡＬＯＧ)────────────────────────────────────────────────── ─── Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B28B 1/14-1/16 B28B 1/30 B05C 1/04-1/16 WPI (DIALOG)
Claims (4)
に成形するためのセラミックグリーンシート成形用キャ
リアフィルムにおいて、 前記スラリー状のセラミック原料を塗布する塗工面の表
面粗さが、Ｒａ＝０．１μｍ相当以上であり、かつ、Ｒ
ａ＝１μｍ相当以下であることを特徴とするセラミック
グリーンシート成形用キャリアフィルム。1. A ceramic green sheet forming carrier film for forming a slurry ceramic material into a sheet, wherein a surface roughness of a coating surface on which the slurry ceramic material is applied is equivalent to Ra = 0.1 μm. Ri der or more and, R
carrier film ceramic green sheet forming to a = 1 [mu] m corresponds characterized der Rukoto below.
の表面粗さに粗面化されていることを特徴とする請求項
１に記載のセラミックグリーンシート成形用キャリアフ
ィルム。2. The coating surface is roughened to a predetermined surface roughness by sandblasting.
2. The carrier film for forming a ceramic green sheet according to 1 .
で被覆することにより所定の表面粗さに粗面化されてい
ることを特徴とする請求項１に記載のセラミックグリー
ンシート成形用キャリアフィルム。3. The carrier for forming a ceramic green sheet according to claim 1, wherein the coated surface is roughened to a predetermined surface roughness by spraying fine particles and coating with a coating agent. the film.
を混合することにより所定の表面粗さに粗面化されてい
ることを特徴とする請求項１に記載のセラミックグリー
ンシート成形用キャリアフィルム。4. The ceramic green sheet molding carrier film according to claim 1, wherein the coating surface is roughened to a predetermined surface roughness by mixing an additive into the carrier film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16254896A JP3538692B2 (en) | 1996-06-24 | 1996-06-24 | Carrier film for forming ceramic green sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16254896A JP3538692B2 (en) | 1996-06-24 | 1996-06-24 | Carrier film for forming ceramic green sheets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH106316A JPH106316A (en) | 1998-01-13 |
| JP3538692B2 true JP3538692B2 (en) | 2004-06-14 |
Family
ID=15756691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16254896A Expired - Lifetime JP3538692B2 (en) | 1996-06-24 | 1996-06-24 | Carrier film for forming ceramic green sheets |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3538692B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002042831A (en) * | 2000-07-24 | 2002-02-08 | Mitsubishi Polyester Film Copp | Mold releasing film |
| WO2012043971A2 (en) * | 2010-09-29 | 2012-04-05 | 포항공과대학교 산학협력단 | Method for manufacturing a flexible electronic device using a roll-shaped motherboard, flexible electronic device, and flexible substrate |
| JP6068182B2 (en) * | 2012-03-29 | 2017-01-25 | 日本碍子株式会社 | Manufacturing method of honeycomb structure |
-
1996
- 1996-06-24 JP JP16254896A patent/JP3538692B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH106316A (en) | 1998-01-13 |
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