Tobacco smoke filter plug and producing method therefor
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United States of America Patent
Stats
-
Feb 23, 1982
Grant Date -
N/A
app pub date -
Apr 4, 1980
filing date -
Apr 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tobacco smoke filter plug comprises fiber tow fillings in the form of cylinder, composed of an inner core phase and an outer skin layer different from each other in fibrous arrangement structure thereof, the inner core phase consisting of fillings in a folded arrangement structure having a folding axis forming an angle of .alpha. with respect to the central longitudinal axis of the filter plug in cross section, and the outer skin layer consisting of fillings in a folded structure substantially parallel to the central longitudinal axis of the filter plug in cross section and surrounding said inner core phase.
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