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US 9,539,613 B2Granted
System and method for making a film having a matte finish
Assignee3M Innovative Properties Company
InventorsRobert A. Yapel, Francis M. Aguirre, John P. Baetzold, Olester Benson, Jr., Andrew J. Henderson, Mitchell A. F. Johnson, Leslie A. Todero, Steven J. McMan, David L. Phillips, Bruce D. Shalles
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Abstract
A system and a method for providing a film having a matte finish is described. A coatable material is applied to a substrate. The viscosity of the coatable material is changed and a face-side roller having patterned features thereon contacts the coatable material to impart a matte finish thereon; and hardening the coatable material.
Claims23
A method of producing a textured film comprising:
- applying a first coatable material to a first major surface of a substrate such that the coatable material has a first major surface in contact with the first major surface of the substrate and a second major surface opposite the first major surface of the first coatable material;
- changing the viscosity of the first coatable material from a first viscosity to a second viscosity to form a second coatable material;
- contacting the second coatable material to a face-side roller having patterned features thereon;
- splitting the second coatable material from the face-side roller having patterned features thereon to form a textured surface wherein a first volume of the second coatable material adheres to the face-side roller and a second volume of the second coatable material is released from the face-side roller back onto the first major surface of the substrate;
- wherein the second volume of the second coatable material is released from the face-side roller at a rate that is the same rate at steady-state or nearly the same rate as the first volume of the second coatable material is adhered to the face-side roller, and wherein the textured surface is not a mirror image of the surface of the face-side roller having patterned features thereon;
- and,
- hardening the second coatable material of the textured surface to produce a resultant film substrate with a resultant textured surface.
4 more elements
Dependencies are inferred from the claim text.