PACKAGING FILM

PURPOSE:A packaging film which is flexible and excellent in transparency and gloss, having blocking resistance and can be produced at low cost, comprising a specified random copolymer having a specified cold xylene-soluble portion content and a specified boiling n-heptane-insoluble potion content. C...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAE KIYOHIKO, OGAWA TADATOSHI, SADATOSHI HAJIME, YOSHIDA TERUAKI, KITAMURA SHIYUUJI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:A packaging film which is flexible and excellent in transparency and gloss, having blocking resistance and can be produced at low cost, comprising a specified random copolymer having a specified cold xylene-soluble portion content and a specified boiling n-heptane-insoluble potion content. CONSTITUTION:A packaging film comprising a copolymer of (A) propylene with (B) a 4C or higher alpha-olefin (e.g., butene-1) wherein the content of component B is 10-25mol%, the boiling n-heptane-insoluble portion content of the copolymer is 7wt% or above, and the cold xylene-soluble portion content is 13-60wt%. The yields of the produce are high, and in addition it can be made from a resin which can be produced at low cost, and this packaging film is flexible and excellent in transparency and gloss and also excellent in blocking resistance.