Nylon 6/polypropylene blend oriented film and its manufacturing method

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PROBLEM TO BE SOLVED : To provide a crystal-oriented film which has two-dimensionally excellent mechanical properties and is obtained by controlling the crystal orientation of a blend of nylon 6 and polypropylene, that is expected as a material having both of the physical properties, such as impact resistance, of the nylon 6 and properties, such as low water-absorbing property, of polypropylene in a good balance. ŽSOLUTION : The crystal orientation of polypropylene is controlled by re-crystallizing an isotactic polypropylene in a nylon 6/isotactic polypropylene-blended stretched film. Thereby, the breaking strength and elastic modulus in the drawing direction and the vertical direction are enhanced, and mechanical properties are improved. ŽCOPYRIGHT : (C)2010, JPO&INPIT Ž