Enhanced color change interlocking closure strip
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United States of America Patent
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-
Mar 13, 1990
Issued Date -
N/A
app pub date -
Jan 31, 1989
filing date -
Jun 22, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An interlocking closure device including two closure elements arranged to be interlocked over a predetermined length, each of said closure elements having different colors for establishing visually the completeness of the occlusion of the closure elements by providing color different from the closure elements when said closure elements are occluded, wherein the improvement comprises the introduction of a color change enhancement member in the internal channel of a translucent closure element whereby the closing and opening of the closure device is more easily detected by visual inspection.
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Family
International Classification(s)
Cited Art Landscape
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