| 摘要 |
PURPOSE: Provided is a porous polyester film which can be used for advanced functions such as printing, imaging, advertising, displaying, and etc. CONSTITUTION: The film consists of a photic zone(layer A) predominantly comprising polyester resin having 60 degree gloss of surface of 100% or more; a layer B comprising 3-30 wt% of thermoplastic resin which is incompatible with the polyester resin, 30 wt% or less of mineral particles, and 0.5 wt% or less of fluorescent bleaching agents; and an aphotic zone(layer C) predominantly comprising polyester resin having 60 degree gloss of surface of 50% or less. The layers (A), (B) and (C) are laminated in the order.
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