A smoking article filter includes a flow restrictor and a cavity downstream of the flow restrictor. The flow restrictor includes an orifice or flow channel for directing smoke into the cavity. The filter is attached to the tobacco rod with tipping paper and includes an air-admissible ventilating zone at a location downstream of the restrictor.
申请公布号
EP2007233(A1)
申请公布日期
2008.12.31
申请号
EP20070732198
申请日期
2007.03.28
申请人
PHILIP MORRIS PRODUCTS S.A.
发明人
LI, SAN;OLEGARIO, RAQUEL;BRAUNSHTEYN, MIKE;DWYER, ROLAND, W.;GARTHAFFNER, MARTIN;WILLIAMS, DWIGHT;JUPE, RICHARD;SNYDER, TONY