Patent ID: 11919280
Assignee: TOYOBO CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C | IPC B

Claim 0:
1. A polyester-based film comprising:
a layer permitting printing as a result of laser irradiation; and
a first surfacemost layer,
wherein the layer permitting printing as a result of laser irradiation is a stretched layer,
wherein not less than 100 ppm but not greater than 3000 ppm of laser-printable metal is present in all layers of the polyester-based film,
wherein the first surfacemost layer contains microparticles,
wherein content of the microparticles in the polyester-based film is not greater than 1 wt %,
wherein haze of the polyester-based film is not less than 1% but not greater than 40%, and
wherein unevenness in thickness of the polyester-based film in at least either a machine direction or a transverse direction is not less than 0.1% but not greater than 20%.