Heat activated indica on textiles
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United States of America Patent
Stats
-
Feb 16, 1988
Grant Date -
N/A
app pub date -
Jul 2, 1985
filing date -
Nov 16, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A woven fabric textile (10) in the form of a washcloth (12) or other fabric article having indica (16) in the form of a hidden message or symbol imprinted on its major surface. The indica is not visible to the naked eye under normal ambient temperatures. However, when the washcloth (12) is subjected to temperatures above 108 degrees F. (42 degrees C.), such as when emersed in bath water, the hidden indica (16) appears to the user. The indica (16) consists of a blend of conventional ink and a substance known by its tradename MATSUMIN THERMOCHROMATIC COLOR.
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