Patent ID: 11906701
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Surface technology, coating (Chemistry)
Classification: CPC G  H  B  E  F  Y | IPC B  E  G  H

Claim 18:
19. A method of forming an article comprising a layer defining an anti-reflective surface, the method comprising:
extruding a hot melt material comprising an ultraviolet-stable material;
shaping the extruded material with a micro-replication tool comprising a mirror image of a series of micro-structures to form the series of micro-structures on the surface of the layer, the series of micro-structures comprising a series of alternating micro-peaks and micro-spaces along an axis; and
forming a plurality of nano-structures on the surface of the layer on at least the micro-spaces, the plurality of nano-peaks comprising at least one series of nano-peaks along the axis,
wherein the micro-spaces have a width of at least 50 micrometers.