| 摘要 |
FIELD: tobacco industry.SUBSTANCE: invention relates to smoking product, which includes smoking material, filter, first layer enveloping at least part of filter, second layer surrounding at least part of first layer, and one or more flow passages of ventilation air between first and second layers, wherein: (a) at least part of one or more passages is located further from the axis of smoking product, than any part of smoking material source; (b) at least part of first layer has shaped external surface forming, together with second layer, one or more passages; (c) first layer includes part with smooth inner surface of surrounding part of smoking material source or surrounding adjacent part of smoking material source and filter; and (d) one or more passages have one or more input holes for air, located near end, closest to smoking material source, or outside it, wherein location of one or more input holes for air is determined by length of first and second layers in direction to end of filter or beyond its limits.EFFECT: technical result consists in provision of filter ventilation.12 cl, 7 dwg |
