Abstract: Smoking articles having reduced ignition proclivity characteristics are disclosed. The smoking articles include a wrapper comprising cellulosic fibers and a filler. In accordance with the present disclosure, the filler has a particle size of at least about 3.2 microns and is present in the wrapper in an amount less than about 20% by weight. Further, the wrapper may have a basis weight of less than about 23 gsm and a permeability of from about 15 Coresta to about 110 Coresta. It has been discovered that such wrappers are capable of reducing the ignition proclivity characteristics of a smoking article. If desired, the particular wrapper as described above can also contain discrete areas treated with an ignition reducing composition which further serves to reduce the ignition proclivity characteristics of the article.

Abstract: The present invention is directed to smoking articles having reduced carbon monoxide delivery are described. A carbon monoxide reducing agent is incorporated into the smoking article in order to reduce carbon monoxide levels in mainstream smoke. The carbon monoxide reducing agent may be, for instance, in metal oxide or in metal carbonate. The carbon monoxide reducing agent may be incorporated into a wrapper and/or into a column of smokable filler that are used to construct the smoking article.

Abstract: The present invention is generally directed to smoking articles having reduced carbon monoxide delivery. In order to reduce carbon monoxide delivery, the wrapping papers used to construct the smoking article has a fiber basis weight of less than about 18 gsm. Smoking articles constructed in accordance with the present invention can have a carbon monoxide delivery less than about 18 mg per smoking article.

Abstract: The present invention is directed to a method for improving the ash characteristics of a paper wrapper for a smoking article and for improving the ash characteristics of the smoking article itself. Specifically, it has been unexpectedly discovered that the ash cohesiveness of a paper wrapper is noticeably improved when carbon fibers having an average length less than about 0.75 inches are incorporated into the paper in an amount up to about 60% by weight. Paper wrappers made with carbon fibers in accordance with the present invention have superior ash characteristics in comparison to paper wrappers incorporating only flax or other cellulosic fibers. Further, the ash cohesiveness of the paper is improved without resulting in the decline in the quality of other ash characteristics.

Abstract: A method of reducing the burn rate of a smoking article is provided. Specifically, the burn rate is reduced by incorporating into a paper wrapper of the smoking article a filler (e.g., precipitated calcium carbonate) having a median particle size greater than about 2.5 microns. For instance, such paper wrappers formed according to the present invention typically have a Diffusion Conductance Index (DCI) of less than about 15 cm−1 and a Static Burn Rate (SBR) of less than about 5 millimeters per minute.

Abstract: The present invention is generally directed to high opacity cigarette wrapping papers. The wrapping paper made according to the present invention contains a mixture of a white pigment and a black pigment. The white pigment, which can be, for instance, calcium carbonate, has a median particle size of from about 0.1 microns to about 0.5 microns, and particularly from about 0.2 microns to about 0.4 microns. It has been discovered that this particular particle size range, which is equal to one-half the wavelength of visible light, greatly increases the opacity, brightness and whiteness of the paper. Small amounts of a black pigment, such as carbon, are then added to further increase the opacity without significantly decreasing the whiteness or brightness of the paper relative to conventional cigarette paper.

Abstract: A mechanism is provided to significantly enhance control over the emission of particulate dust typically generated during operation of a hand-held sander. A suction manifold coupled to any conventional means for providing suction is fitted to the outside of the sander body and communicates through a plurality of connection tubes with a plenum through which particulates generated during sanding are sucked in through apertures in a sanding pad of the sander. Further enhancement of removal of the particulates is obtained by a plurality of grooves in the sanding surface of the sanding pad of the sander, such grooves each having an inside end communicating with a corresponding one of a plurality of apertures through the sanding disk, each groove also having an outside end at an outer periphery of the sanding pad.

Abstract: For improved removal of dust generated in sanding with a rotating disk sander, while simutaneously maintaining a sanding surface thereof free of clogging by dust particles, there is provided a plurality of compressed gas nozzles distributed lengthwise along an elongated common compressed gas supply manifold. The nozzles preferable are disposed to deliver high velocity jets of a compressed gas into a rotating boundary layer at the rotating sanding disk surface to thereby interact with the boundary layer and to simultaneously forcibly dislodge any dust particles tending to adhere to the air sanding disk surface. Suction is provided around a portion of the sanding disk to remove the dust particles that are entrained in the boundary layer and any dust particles dislodged from the sanding disk surface. In one aspect of this invention, the apparatus thereof may be added to a conventional disk sander apparatus to improve dust collection therefrom.

Abstract: A dust collecting assembly for use with a machine tool having a rotating tool bit, which includes means for applying a plurality of parallel jets of air in the direction of particles as they are removed from a workpiece by the tooling operation. The jets of air are directed to slow down the particles so that they may be removed by a vacuum exhaust system. In applying the method to multi-directional tooling operations a plurality of jets surround the entire work area and selected subgroups of the jets are activated which oppose the trajectory of removed particles as the direction of the tooling operation changes.