Marking of smoking-article wrappings

Details Marking of smoking-article wrappings Marking of smoking-article wrappings

A - Human Necessities

24

C

131/22

A24C 5/60 (2006.01)

Patent

CA 1220688

ABSTRACT A method of marking a smoking-article exterior wrapping, particularly a cigarette wrapping, in which the said wrapping, comprising a substance which causes or undergoes a permanent change of colour under the action of the application of heat, is subjected to heat by bringing the article and a heated former means into contact with each other, the former means corresponding to the required marking, whereby heat applied through the former means effects the colour change. The method produces a marking otherwise -than by printing it with ink.

449725

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