Mold release film for production of ceramic green sheet

A technology for ceramic green sheets and mold release films, which is used in manufacturing tools, capacitor manufacturing, ceramic molding machines, etc., and can solve problems such as damage to the uniformity of peeling, reduction of electrode printing accuracy, and defects.

Active Publication Date: 2020-05-26
TOYO TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when using the method described in Patent Document 2, there is a problem that when processing in the air, the surface of the release layer becomes poorly cured due to the influence of oxygen inhibition due to the radical polymerization reaction.
If poor curing occurs on the surface of the release layer, the release layer will be corroded by organic solvents during ceramic green sheet processing and internal electrode p

Method used

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  • Mold release film for production of ceramic green sheet
  • Mold release film for production of ceramic green sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0160] Coat the coating solution with the following composition on the surface layer A of the laminated film X1 with a wire bar so that the thickness of the dried release layer becomes 50 nm, dry at 90°C for 15 seconds, and then use a UV irradiation machine (Manufactured by Heraeus, LC6B, Hvalve) The cumulative light intensity of irradiation is 70mJ / cm 2 Ultra-thin layer ceramic green sheet manufacturing release film. The ceramic slurry was coated on the obtained release film, and the surface roughness of the release layer, peelability, change in contact angle after immersion in toluene, pinholes, curling, etc. were evaluated, and good evaluation results were obtained.

[0161] 49.43 parts by mass of methyl ethyl ketone

[0162] 49.43 parts by mass of toluene

[0163] Binder a containing a cationic curable substance: 0.90 parts by mass of 3',4'-epoxycyclohexylmethyl 3,4-epoxycyclohexyl carboxylate

[0164] (Product name: CELLOXIDE (registered trademark) 2021P, manufactured ...

Embodiment 2

[0171] Except having changed into the coating liquid of the composition shown below, it carried out similarly to Example 1, and obtained the release film for ultrathin-layer ceramic green sheet manufacture.

[0172] 49.43 parts by mass of methyl ethyl ketone

[0173] 49.43 parts by mass of toluene

[0174] Binder a comprising cationically curable substances:

[0175] CELLOXIDE (registered trademark) 2021P 0.86 parts by mass

[0176] 0.04 parts by mass of butanetetracarboxylic acid tetrakis(3,4-epoxycyclohexylmethyl-modified ε-caprolactone

[0177](Product name: EPOLEAD (registered trademark) GT401, manufactured by Daicel Corporation, solid content 100%, 4 functions)

[0178] Release agent b: 0.10 parts by mass of UV Poly215

[0179] Acid generator: UV CATA211 (active ingredient 19% by mass)

[0180] 0.26 parts by mass

Embodiment 3

[0182] Except having changed into the coating liquid of the composition shown below, it carried out similarly to Example 1, and obtained the release film for ultrathin-layer ceramic green sheet manufacture.

[0183] (coating liquid 3)

[0184] 49.43 parts by mass of methyl ethyl ketone

[0185] 49.43 parts by mass of toluene

[0186] Binder a comprising cationically curable substances:

[0187] CELLOXIDE (registered trademark) 2021P 0.63 parts by mass

[0188] EPOLEAD (registered trademark) GT401 0.27 parts by mass

[0189] Release agent b: 0.10 parts by mass of UV Poly215

[0190] Acid generator: UV CATA211 (active ingredient 19% by mass)

[0191] 0.26 parts by mass

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Abstract

The invention provides a mold release film for the production of a ceramic green sheet, which maintains high smoothness of the surface of a mold release layer, and which is free from the possibility of damaging a ceramic green sheet when the ceramic green sheet is removed from the mold release layer even in cases where the ceramic green sheet is an ultrathin layer material having a thickness of 1mum or less by having the force applied to the ceramic green sheet during the removal from the mold release film low and uniform. A mold release film for the production of a ceramic green sheet, whichis obtained by providing a mold release layer on a surface layer A of a polyester film, said surface layer A substantially containing no inorganic particles, and which is configured such that the mold release layer is obtained by curing a composition that contains a binder a which contains cationically curable substance and one or more mold release agents b.

Description

technical field [0001] The present invention relates to a mold release film for manufacturing ceramic green sheets, and relates to suppressing the erosion of the mold release layer caused by organic solvents during ceramic sheet processing and internal electrode printing, so that there is no need to worry about the increase in peeling force and the uniformity of peeling. Release film for damaged ceramic green sheets. Background technique [0002] Conventionally, release films made of polyester film as a base material and laminated with a release layer have been used for molding ceramic green sheets such as laminated ceramic capacitors and ceramic substrates. In recent years, along with miniaturization and increase in capacity of multilayer ceramic capacitors, the thickness of ceramic green sheets also tends to be thinner. Ceramic green sheets are molded by coating a slurry containing ceramic components such as barium titanate and a binder resin on a release film and drying ...

Claims

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Application Information

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IPC IPC(8): B28B1/30B32B27/00B32B27/18B32B27/36H01G4/30H01G13/00
CPCB28B1/30B32B27/00B32B27/18B32B27/36H01G4/30H01G13/00C08J7/0427C08J5/18C08J2367/00C08J2400/10C08J2463/00C09D5/20
Inventor重野健斗柴田悠介中谷充晴
OwnerTOYO TOYOBO CO LTD