RELEASE FILM

• Main Authors: YOSHINO KENJI, SHIBATA YUSUKE, HORIKAWA RYO
• Format: Patent
• Language: English; Korean
• Published: 26.05.2021
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; LIME, MAGNESIA; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

[과제] 세라믹 그린 시트를 박막화시킨 경우에도, 양호한 권취성과, 핀 홀이나 부분적인 두께 변동 등의 방지를 양립시킬 수 있는 우수한 세라믹 그린 시트 제조용 이형 필름을 제공하는 것. [해결수단] 입자를 실질적으로 함유하고 있지 않은 폴리에스테르 필름을 기재로 하고, 상기 기재의 한쪽의 표면 상에 이형 도포층을 갖고, 또한 다른 한쪽의 표면 상에 입자를 함유하는 이활 도포층을 갖고, 이활 도포층의 영역 표면 평균 조도(Sa)가 1nm 이상 25nm 이하, 최대 돌기 높이(P)가 60nm 이상 500nm 이하, 또한 조도 곡선 요소의 평균 길이(RSm)가 10㎛ 이하인 세라믹 그린 시트 제조용 이형 필름. [Problem] To provide an excellent release film for producing a ceramic green sheet, the release film being capable of attaining both satisfactorily suitability for winding and prevention of pinholes, local thickness unevenness, etc., even when forming a ceramic green sheet having a reduced thickness. [Solution] A release film for producing a ceramic green sheet, the release film comprising a substrate that is a polyester film containing substantially no particles, a release coating layer formed on one surface of the substrate, and an easy-to-slip coating layer formed on the other surface and containing particles, wherein the easy-to-slip coating layer has an average surface region roughness (Sa) of 1-25 nm, a maximum projection height (P) of 60-500 nm, and an average roughness-curve-element length (RSm) of 10 µm or less.