Blyth, Inc.

John Wesley

A safety label for use with chafing fuel cans capable of providing the user with information about the current physical characteristics of the can, including as they relate to temperature, employing the use of thermochromic materials dispersed within a media such as ink or paint. The thermochromic materials are capable of undergoing a sharp, reversible visible metachromism between the temperatures of &minus;40&deg; C. and 80&deg; C. The method of manufacturing safety labels according to the invention include the steps of applying informational indicia on the safety label, and then covering such indicia with the media containing the thermochromic materials dispersed therein. When the chafing fuel can is ignited, the media with the thermochromic materials visually undergoes a metachromism, rendering the media invisible, thereby revealing the informational indicia applied with the non-thermochromic ink. After the chafing fuel can has been extinguished the temperature decreases, whereupon the media with the thermochromic material reappears, thereby, covering up again the informational indicia.

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Edison, NJ, United States of America

John Wesley