POLYESTER FILM FOR PROTECTIVE BASE MATERIAL

POLYESTER FILM FOR PROTECTIVE BASE MATERIAL

PROBLEM TO BE SOLVED: To provide a base material film for protection with less interference fringe which can be visually checked in a short distance not only the interference fringe of the long cycle, and having superior film appearance in a rolled up roll shape.SOLUTION: There is provided a biaxial...

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Bibliographische Detailangaben
1. Verfasser: YONEDA ISAO
Format: Patent
Sprache:eng
Schlagworte:
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
TRANSPORTING
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a base material film for protection with less interference fringe which can be visually checked in a short distance not only the interference fringe of the long cycle, and having superior film appearance in a rolled up roll shape.SOLUTION: There is provided a biaxially stretched polyester film that has a coating layer at least in one surface, and a polyester film for the protective base material that fills following formulas (1): D≤60 and (2): H≤1.0 at the same time. (in the formula, D is a value calculated by following formula (3): D=(d-d)×1000 from thickness of two points dand thickness daway by any 10 mm measured by a continuous thickness gauge, and His an internal haze of the film).