Method for making filter cigarettes using light energy to make perforations in the filter tipping wrap
摘要
Perforations are made at locations spaced about the periphery of a cigarette by conducting separate parts of a laser beam through respective separate light paths which intersect such spaced peripheral locations.
申请公布号
US4224497(A)
申请公布日期
1980.09.23
申请号
US19780908520
申请日期
1978.05.22
申请人
PHILIP MORRIS INCORPORATED
发明人
DULEY, WALTER W.;LILLY, JR., A. CLIFTON;CLAFLIN, WARREN E.;STULTZ, EDWARD B.;MARTIN, PETER
