| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a white laminated polyester film for a reflective sheet which exhibits high reflectivity and high concealability in combination, and is made with good productivity. <P>SOLUTION: The white laminated polyester film for the reflective sheet has a polyester layer (A) laminated on at least one surface side of a polyester layer (B) containing a cavity in an interior and satisfies all of the following (1)-(5). (1) The thickness of the polyester layer (A) of at least one surface side is 5-15 μm. (2) Particle having a reflectivity of 2.0 or more of 3-15 wt.% to the polyester layer (A) is contained in the polyester layer (A). (3) The thickness of the polyester layer (B) is 150 μm or more. (4) The amount of the particle having the reflectivity of 2.0 or more contained in the polyester (B) is 2 wt.% or less to the polyester layer (B). (5) A resin incompatible with a polyester resin of 12-25 wt.%, and/or inorganic particles having less than 2.0 of a refractive index of 30-50 wt.% to the polyester layer (B) are contained in the polyester layer (B). <P>COPYRIGHT: (C)2008,JPO&INPIT |
