LAMINATED POLYESTER FILM FOR MAGNETIC RECORDING MEDIUM

PURPOSE:To obtain a laminated polyester film excellent in scratch resistance and running durability by specifying the volume average particle diameter and content of inert particles in a polyester film layer to be laminated and the orienting characteristics of the resultant laminated polyester film....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KIDA KATSUMI, ITO KIYOHIKO, TSUCHIBUCHI MASANOBU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER 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 PERFORMING OPERATIONS PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a laminated polyester film excellent in scratch resistance and running durability by specifying the volume average particle diameter and content of inert particles in a polyester film layer to be laminated and the orienting characteristics of the resultant laminated polyester film. CONSTITUTION:A polyester film layer contg. 0.1-8wt.% inert particles having 0.1-2.0mum volume average particle diameter is laminated on at least one side of a polyester film layer having >=3mum thickness to obtain the objective laminated polyester film having a face orientation index F and DELTAN which satisfy the inequalities DELTAN=1,340-8, 627XF and -60