RELEASE FILM FOR PRODUCING CERAMIC GREEN SHEET

To provide an excellent coating polyester film capable of reconciling satisfactory winding properties and the prevention of pinholes, partial thickness variation or the like even in the case a ceramic green sheet is made into a thin film.SOLUTION: A coating polyester film comprises: a polyester film...

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Bibliographic Details
Main Authors YOSHINO KENJI, SHIBATA YUSUKE, HORIKAWA RYO
Format Patent
LanguageEnglish
Japanese
Published 27.07.2020
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Summary:To provide an excellent coating polyester film capable of reconciling satisfactory winding properties and the prevention of pinholes, partial thickness variation or the like even in the case a ceramic green sheet is made into a thin film.SOLUTION: A coating polyester film comprises: a polyester film not substantially containing particles as a base material; and a slippery coating layer on either surface of the base material, in which the polyester film includes at least one kind selected from polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, and the average length of the roughness curve element of the slippery coating layer (RSm) is 10 μm or lower.SELECTED DRAWING: None 【課題】セラミックグリーンシートを薄膜化させた場合でも、良好な巻取り性と、ピンホールや部分的な厚みばらつき等の防止を両立させることができる優れたコーティングポリエステルフィルムを提供すること。【解決手段】 粒子を実質的に含有していないポリエステルフィルムを基材と、前記基材の一方の表面上に易滑塗布層とを有し、前記ポリエステルフィルムが、ポリエチレンテレフタレート、ポリプロピレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレートから選ばれる少なくとも1種を含むポリエステルフィルムであり、前記易滑塗布層の粗さ曲線要素の平均長さ(RSm)が10μm以下である、コーティングポリエステルフィルム。【選択図】なし
Bibliography:Application Number: JP20200027456