POLYPROPYLENE FILM, METAL-LAYER INTEGRATED POLYPROPYLENE FILM, FILM CAPACITOR, AND FILM ROLL

To provide a polypropylene film which enables suppression of blocking in a rolled polypropylene film.SOLUTION: A polypropylene film has a first surface and a second surface, contains a polypropylene resin as a main component, and is configured in such a manner that a ratio SpkB/SpkA of a Spk value (...

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Bibliographische Detailangaben
Hauptverfasser:	NAKADA MASAHIRO, ISHIDA TATSUJI, OKUYAMA YOSHIMUNE, ISHIWATARI TADAKAZU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONVEYING ELECTRICITY GENERAL PROCESSES OF COMPOUNDING HANDLING THIN OR FILAMENTARY MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKING PERFORMING OPERATIONS STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	To provide a polypropylene film which enables suppression of blocking in a rolled polypropylene film.SOLUTION: A polypropylene film has a first surface and a second surface, contains a polypropylene resin as a main component, and is configured in such a manner that a ratio SpkB/SpkA of a Spk value (SpkA) of the first surface to a Spk value (SpkB) of the second surface is 0.490 or more and 0.730 or less, and a ratio SvkB/SvkA of a Svk value (SvkA) of the first surface to a Svk value (SvkB) of the second surface is 0.735 or more and 1.250 or less.SELECTED DRAWING: None 【課題】ロール状に巻回されたポリプロピレンフィルムのブロッキングを抑制することが可能なポリプロピレンフィルムを提供すること。【解決手段】第１の面と第２の面とを有するポリプロピレンフィルムであって、主成分としてポリプロピレン樹脂を含有し、前記第１の面のＳｐｋ値（ＳｐｋＡ）と前記第２の面のＳｐｋ値（ＳｐｋＢ）との比率ＳｐｋＢ／ＳｐｋＡが０．４９０以上０．７３０以下であり、前記第１の面のＳｖｋ値（ＳｖｋＡ）と前記第２の面のＳｖｋ値（ＳｖｋＢ）との比率ＳｖｋＢ／ＳｖｋＡが０．７３５以上１．２５０以下であるポリプロピレンフィルム。【選択図】なし