| 摘要 |
PROBLEM TO BE SOLVED: To stably supply a highly abrasion-resistant polyester film with superior optical properties and image drawing characteristic through the range of ordinary steps to manufacture a polyester film. SOLUTION: This biaxially oriented laminated polyester film consists of a polyester A layer laminated at least, on one of the faces of a polyester B layer. The central line surface roughness of the polyester A layer is at least, 50nm and the content of particles on the surface layer of the polyester A layer is 5wt.% or less. In addition, the total light beam permeability Ti(%) and the diffusion permeability Td(%) satisfy expression Ti>=80, Ti×Td>=4000. |
