Laminated polyester film

A laminated polyester film provided with a polyester film and a resin layer formed from a resin composition, the resin layer being formed on at least one surface of the polyester film, the laminated polyester film satisfying all of the following conditions (1) to (4). (1) The resin layer has an uneven structure. (2) The resin composition contains the following compounds (A) and (B). (A) at least one selected from the group consisting of binder resins and cross-linking agents; and (B) particles. And (3) the content of the (B) particles is 20 mass% or more relative to the total amount of non-volatile components in the resin composition. And (4) the surface of the resin layer has a kurtosis (Sku) of less than 3.0. According to the present invention, it is possible to provide a laminated polyester film having excellent handling properties when the film is wound into a roll by forming a fine uneven structure. 一种层叠聚酯薄膜，其具备聚酯薄膜和由树脂组合物形成的树脂层，所述树脂层形成在前述聚酯薄膜的至少单面，所述层叠聚酯薄膜满足以下的(1)～(4)的全部条件。(1)前述树脂层具有凹凸结构。(2)前述树脂组合物包含下述化