Title:
RELEASE FILM FOR PRODUCING CERAMIC GREEN SHEET
Document Type and Number:
WIPO Patent Application WO/2019/088184
Kind Code:
A1
Abstract:
[Problem] To provide an excellent release film for producing a ceramic green sheet, the release film being capable of preventing pinholes, partial thickness variations, or the like, and of reducing unwinding charge, 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, 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. A single layer, of a mixture composition of a resin and a crosslinking agent, in the easily slidable coating layer has a Martens hardness (HM) of at least 150 N/mm2 and an elastic deformation power (ηit) of at least 28%.
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Inventors:
SHIBATA YUSUKE (JP)
MATSUO YUKA (JP)
MATSUO YUKA (JP)
Application Number:
PCT/JP2018/040554
Publication Date:
May 09, 2019
Filing Date:
October 31, 2018
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B28B1/30; B32B27/00; B32B27/36; H01G4/30
Domestic Patent References:
| WO2017199774A1 | 2017-11-23 |
Foreign References:
| JP2016060158A | 2016-04-25 | |||
| JP2012007157A | 2012-01-12 | |||
| JP2007320147A | 2007-12-13 | |||
| JP2012232494A | 2012-11-29 | |||
| JP2016210041A | 2016-12-15 |
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