System and method for making a film having a matte finish

US8623140B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Robert A. Yapel · Oakdale, US
• Francis M. Aguirre · Windom, US
• John P. Baetzold · North St. Paul, US
• Olester Benson, Jr. · Woodbury, US
• Andrew J. Henderson · Eagan, US
• Mitchell A. F. Johnson · Maplewood, US
• Leslie A. Kreilich · Windom, US
• Steven J. McMan · Stillwater, US
• David L. Phillips · White Bear Lake, US
• Bruce D. Shalles · Stillwater, US

Key dates

• Filing date: Jul 25, 2007
• Grant date: Jan 7, 2014
• Expiry date: Jun 5, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05D2252/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A system and a method for providing a film having a matte finish. The system includes means for providing a coated substrate, the coated substrate comprising a first coatable material applied to a substrate, the coatable material forming a first major surface of the coated substrate; means for changing the viscosity of the first coatable material from a first viscosity to a second viscosity; a face-side roller having an outer surface positioned to contact the first major surface of the coated substrate to impart a matte finish thereon; and optionally, means for hardening the first coatable material. The method of the invention includes the steps of (1) providing a coated substrate comprising a coatable material disposed on a substrate, the coatable material providing a first major surface of the coated substrate; (2) changing the viscosity of the coatable material from the initial viscosity to a second viscosity; (3) contacting the first major surface of the coated substrate with at least one face-side roller to impart a matte finish; and (4) optionally, hardening the coatable material to provide the film.