Falvored Filter Rod

22 May 2019 14:52
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The process of filtration of wastewater has been used widely with different types of filtering media. The filtration efficiency of a smoking article according to this construction is greater than that of a conventional smoking article in which the filter and the smoking article are of the same diameter since the smoke velocity through the filter is reduced, ensuring that the smoke stream maintains contact with the filter for a relatively longer period of time, increasing the adsorption of smoke constituents from the smoke stream onto the fibres of the filter.

Transport tape 12 may be adjusted to run faster or slower than endless belt 17. An optimal speed differential between transport tape 12 and belt 17 will ensure that the vacuum falvored filter rod applied to pockets 16 will draw all, or nearly all, of the free-flowing material 8 off the tape, thereby eliminating the need to refeed or recirculate free-flowing material 8.

Referring now to Figure 2, a cross-section of a cigarette of similar construction is shown, whereby the filter rod (lb) is formed into a conical shape to achieve similar benefits as the tapered design in Figure 1, but with a shallow gradient in smoke velocity over the longitudinal cross section of the filter (lb).

Another object of the invention is to provide a method which is especially suited for the treatment of rod-shaped commodities prior to their conversion into short series of filter cigarettes or the like such as are required for testing in laboratories in order to ascertain the characteristics of various blends of tobacco.

3. A method according to claim 1 further comprising synchronizing the rates of the travel of said second and third conveyance means so that substantially all of said free flowing material is accurately deposited in the receiving spaces formed on said third conveyance means.

The pockets 16 are individually attached to a continuous or endless belt 17 by a support or stalk 47. Endless belt 17 travels around a plurality of wheels 18 and 19. Said wheels may be aligned and positioned in the horizontal plane in a position approximately perpendicular to wheels 13 and 14. Either or both wheels 18 and 19 may be driven by an electric motor or other suitable method.

Additionally, some properties of the basic material itself combined with the ambient climate in the manufacturing site (mainly relative air humidity) play an important role in the filter rod,such as the moisture regain.Investigating the triacetin content in filter rods during the manufacturing process are drivenby several reasons.

These and other objects of this invention are accomplished by providing a method and device which includes parallel travelling vacuum-assisted conveyors and containers for transporting and placing controlled amounts of a free-flowing material into discrete receiving spaces between filter plugs with great speed and precision.

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