Abstract:
A smoking article 110 comprises a tobacco rod 112 and a filter 114. The filter includes a valved flow restrictor 126 and a cavity 146 downstream of the flow restrictor. The flow restrictor includes an orifice or flow channel 130 for directing smoke into the cavity. The filter is attached to the tobacco rod with tipping paper 116 and includes an air-admissible ventilating zone 140 at a location downstream of the restrictor. The filter further comprises a valve (123, 125) which moves from a first position at which mainstream smoke freely passes through the orifice in the restrictor to a second position at which the valve partially or fully closes the orifice in the restrictor.
Abstract:
A smoking article 10 having a filter segment 22 that establishes both a desired resistance to draw and a mixing of mainstream smoke with ventilation air is disclosed. The filter segment includes a fluted portion 26, a frusto-conical portion 24 and axially extending orifices 34 establishing fluid communication between the frusto-conical portion and voids 28 between one or more walls of the fluted portion.
Abstract:
A smoking article filter (114) according to the invention includes a flow restrictor (126) and a cavity (146) downstream of the flow restrictor. The flow restrictor includes an orifice (130) or flow channel for directing smoke into the cavity. The filter is attached to a tobacco rod (112) with tipping paper (116) and includes an air-admissible ventilating zone (140) at a location downstream of the restrictor. The invention also provides smoking articles including filters comprising restrictors and methods of making filters and smoking articles.
Abstract:
A non-combustible smoking system, comprising: a cartridge having a first end and a second end, the cartridge including a pre-vapor formulation reservoir element configured to contain a pre-vapor formulation material, and a pre-vapor heating element coupled to the pre-vapor formulation reservoir element, the pre-vapor heating element configured to heat at least a portion of the pre- vapor formulation material to generate a vapor, and to provide the vapor to a first channel through the cartridge; and a tobacco containing section having a third end and a fourth end, the tobacco containing section including a tobacco housing configured to contain tobacco, and to provide an aroma to a second channel through the tobacco containing section, and a tobacco heating element configured to heat at least a portion of the tobacco to generate the aroma; wherein the first end of the cartridge is configured to be connected to the fourth end of the tobacco containing section, and the second end of the cartridge is configured to be connected to the third end of the tobacco containing section.
Abstract:
There is provided a non-combustible vaping element comprising a pre-vapor formulation tank (22) configured to contain a pre-vapor formulation, the pre-vapor formulation tank (22) defining a channel (28) there through. The non-combustible vaping element also comprises a heating element (34) coupled to the pre-vapor formulation tank (22) and configured to heat at least a portion of the pre-vapor formulation into a vapor and provide the vapor to a first portion of the channel (28), and a tobacco element (80) at a second portion of the channel (28) and positioned to receive the vapor.
Abstract:
A smoking article (10) includes a filter system having an upstream plug (42) of filtering material, an impaction filter (44) and a downstream plug 46 of filtering material. The impaction filter includes at least one plate (70) having at least one orifice.
Abstract:
A smoking article (10) having a tobacco rod (20) adapted to produce mainstream smoke and a filter (30) having an upstream end portion (32) and a downstream end portion (34), and wherein the filter is arranged to receive mainstream smoke at the upstream end portion. The filter includes a first filter segment (40) of low particulate efficiency at the upstream end portion; a channeled flow segment (60) adjacent to the first filter segment, the channeled flow segment including a flow channel (62) establishing a substantial portion of a predetermined resistance to draw of the smoking article; a mouthpiece filter segment (50) of low particulate efficiency at the downstream end portion; and a tubular body segment (64) at least partially defining a portion of a cavity (66) between the mouthpiece filter segment and the channeled flow segment. Tipping paper (28) attaches the filter with the tobacco rod and includes an air-admissible ventilation zone (70) at a location along the tubular body segment.
Abstract:
A smoking article 10 having a cylinder of smoking material 21, a hollow tube 60 within the cylinder of smoking material, and a filter 40 attached to the cylinder of smoking material. The filter includes an upstream segment 72 containing an aerosol former 74, a downstream segment 76 containing a sorbent material 78, and a valve 70 positioned between the upstream segment and the downstream segment. The valve has a first position in which the valve is closed and a second position in which the valve is open and allows the passage of smoke through the filter.
Abstract:
A smoking article 10 having a cylinder 20 of smoking material 21 and a filter system attached to the cylinder of smoking material. The filter system includes an upstream plug 42 of filtering material, a downstream plug 46 of filtering material, and a cavity between the upstream plug of filtering material and the downstream plug of filtering material. A flow constrictor 70 is positioned within the cavity and has at least one orifice, and a series of perforations 60 provide ventilation to the smoking article.
Abstract:
A smoking article 10 includes a tobacco rod 12 adapted to produce mainstream smoke, and a filter 14 having an upstream end portion 20 and a downstream end portion 25. The filter includes a ventilated cavity 46 and a flow restrictor segment 26 having an impermeable insert 18 at least partially surrounded by a tubular segment 30 of an air transmissive material upstream of the cavity. The tubular segment at least partially defines the cavity. A method of making such a smoking article is disclosed.