Method of imparting non-stick property to metal surface

Details Method of imparting non-stick property to metal surface Method of imparting non-stick property to metal surface

2006-06-19

2009-06-16

Norton, Nadine (Department: 1792)

Coating processes

Application to opposite sides of sheet, web, or strip

C427S178000, C427S378000, C427S388300, C427S389000, C428S447000, C428S450000, C428S689000, C524S323000, C524S267000, C524S736000, C524S738000, C524S438000

Reexamination Certificate

active

07547463

ABSTRACT:
A method of imparting a non-stick coating to a surface of an aluminum foil sheet, and the resulting foil sheet. The method involves coating at least part (preferably at least 40%) of an area of a surface of a metal sheet article (preferably an aluminum foil sheet) with a substantially solvent-free silicone oil at an average coating application rate in a range of 1.5 to 10 mg/ft2of the coated surface area. The coated sheet article is then preferably coiled. The coated sheet article is then heated in the presence of air or oxygen at a temperature of 250° C. or higher for a period of time of at least 10 minutes. The treated surface is both non-stick and food-friendly.

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