Title:
RELEASE FILM FOR PRODUCING CERAMIC GREEN SHEET
Document Type and Number:
WIPO Patent Application WO/2019/065214
Kind Code:
A1
Abstract:
[Problem] To provide an excellent release film for producing a ceramic green sheet, the release film having a good winding property and also being capable of preventing pinholes, partial thickness variations, or the like even when the ceramic green sheet is thinned. [Solution] The present invention provides a release film for producing a ceramic green sheet, wherein a polyester film substantially free of inorganic particles is used as a substrate, a release coating layer is disposed on one surface of the substrate, the film elastic modulus of the release coating layer is at least 2.0 GPa as measured from the surface on the reverse side of the substrate-side of the release coating layer by a nanoindentation test, and an easily slidable coating layer containing particles is disposed on the other surface of the substrate. In a region of the easily slidable coating layer, the average surface roughness (Sa) is 1-25 nm, the maximum protrusion height (P) is 60-500 nm, and the average length (RSm) of roughness curve elements is 10 µm or less.
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Inventors:
SHIBATA YUSUKE (JP)
MAKATANI MITSUHARU (JP)
SHIGENO KENTO (JP)
MATSUO YUKA (JP)
MAKATANI MITSUHARU (JP)
SHIGENO KENTO (JP)
MATSUO YUKA (JP)
Application Number:
PCT/JP2018/033614
Publication Date:
April 04, 2019
Filing Date:
September 11, 2018
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B28B1/30; B32B7/02; B32B27/00; B32B27/36; H01G4/30; H01G13/00
Domestic Patent References:
| WO2013161422A1 | 2013-10-31 | |||
| WO2017199774A1 | 2017-11-23 |
Foreign References:
| JP2016060158A | 2016-04-25 | |||
| JP2012224011A | 2012-11-15 | |||
| JP2013060555A | 2013-04-04 | |||
| JP2017105092A | 2017-06-15 |
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