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US 5,492,729 AGranted
Method for making a terra sigillata coated pan
AssigneeTufty Ceramics, Inc.
InventorsKaren Tufty-Wisniewski, William B. Crandall
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Abstract
A process for preparing a terra sigillata coated body in which a clay green body containing clay, from about 3 to about 15 weight percent of water, and from about 0.05 to about 0.4 weight percent of barium carbonate is coated with a coating composition, and the coated composition is thereafter fired.
Claims13
A process for preparing a terra sigillata coated body, comprising the steps of:
- (a) providing a green body comprised of a first clay, from about 3 to about 15 weight percent of water, and from 0.05 to about 0.4 weight percent of barium carbonate,
- (b) providing a coating composition comprised of from about 20 to about 40 weight percent of a second clay, and from about 0.01 to about 1.0 weight percent of dispersing agent,
- (c) coating said green body with said coating composition to provide a coated green body, and
- (d) firing said coated green body, wherein a mixture of vinegar and water is contacted to at least a portion of said green body.
1 more element
Dependencies are inferred from the claim text.