Method of marking a substrate using a markable thermochromic art

Details Method of marking a substrate using a markable thermochromic art Method of marking a substrate using a markable thermochromic art

1985-01-15

1987-04-28

Turk, Arnold

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Applying indicia or design

101426, 156 85, 156277, 264230, B32B 3300, B32B 3500

Patent

active

046613056

ABSTRACT:
An article which in use is heated to an elevated utilization temperature comprises a thermochromic composition, which when heated to a transition temperature, provides a visible color change in less than about 5 seconds. The transition temperature is at least 30.degree. C. greater than the utilization temperature. To place visible indicia on the article, the article is heated to a temperature at least as great as the transistion temperature.

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