Biaxially oriented laminate polyester film

摘要

A biaxially oriented laminate polyester film (1) has a first polyester layer having a thickness (tA) of 0.3 to 5 mum and a second polyester layer containing an inert fine particle lubricant and having a thickness (tB) of 1.5 to 9 mum, or (2) has a first polyester layer having a thickness (tA) of 2 to 8.5 mum and a second polyester layer containing an inert fine particle lubricant and having a thickness (tB) of 0.6 to 5 mum. The polyester of the second polyester layer may contain a recovered polyester having the same composition as a recovered laminate polyester film which is the biaxially oriented laminate polyester film or an unstretched film thereof.