Figures 1 to 12 shows minimize strips of a first tobacco material for incorporation in a cut filler in accordance with the current invention. The strips have been cut from a sheet of reconstituted tobacco having a thickness from about 0.05 mm to about 1 mm in accordance with a first reduce specification, whereby the first minimize specification units a predetermined first reduce width CW1 and a predetermined first reduce length CL1 . In addition, the primary cut specification may additional set a predetermined first sectional reduce width SCW1.
The reduce width of one such Y-shaped strip corresponds considerably to the distance between the ends of the second and third strip parts as measured alongside a course perpendicular to the path defined by an axis of the primary strip portion. Within the same Y-shaped strip, the sectional cut width of every strip portion may as an alternative tobacco pipe be measured alongside a direction considerably perpendicular to the axis of each strip portion. In some circumstances, similar to where the reduce strip of tobacco materials is considerably rectangular , the sectional cut width and the strip minimize width are the same.
By contrast, in a multimodal distribution, the chance mass operate has a number of maxima, which signifies that among the many minimize strips of the primary tobacco materials there are multiple values of cut length that happen most often. In the context of the present specification, a distribution having a number of native maxima is thought Filling cut tobacco to be multimodal. It might be appreciated that the completely different modes in a multimodal distribution may also have completely different frequencies, such that, among the cut strips of the first tobacco material, one modal value of reduce length will occur more regularly than another modal worth.
The values of filling power are expressed in phrases of corrected cylinder quantity which is the cylinder volume of the tobacco material at a reference moisture degree of 12.5 p.c oven volatiles. The cylinder quantity may be determined using a Borgwaldt densimeter DD60 or DD60A sort fitted with a measuring head for minimize tobacco and a tobacco cylinder container. The term “sinusoidal” is used to explain a minimize strip of tobacco materials formed substantially like a portion of a sine wave.
In most well-liked embodiments, the first tobacco material is a pre-processed tobacco materials. By “pre-processed tobacco materials” reference is made throughout the specification to a tobacco material produced by man from natural tobacco versus occurring naturally as such. It would therefore be desirable to offer an alternative tobacco cut filler having improved filling energy. At the same time, it might be fascinating to provide a novel course of for manufacturing tobacco reduce filler, whereby the filling energy of the tobacco reduce filler is improved and the manufacturing of tobacco dust is decreased. The present invention pertains to the manufacturing of tobacco minimize filler comprising reconstituted tobacco and to a smoking article formed from a tobacco rod comprising the cut filler according to the invention.
Alternative strategies for the manufacture of reconstituted tobacco sheets are additionally recognized to the expert person. Throughout this specification, the expression “reconstituted tobacco sheet” is used to discuss with an internet, preferably with substantially uniform thickness, which may be produced by the rolling or casting of an aqueous slurry or pulp formed from tobacco particles by one of several strategies known in the art. Suitable by-products embody tobacco stems, tobacco stalks, leaf scraps, and tobacco mud produced in the course of the manufacturing course of.
In addition, a second couple of blends was used, that contained 70 % by weight of pure tobacco particles and 30 % by weight of reconstituted tobacco particles minimize in accordance with the specifications of Figures 1 1 and 12, respectively. Thus, the minimize width of an individual reduce strip is taken on the point along the length of the strip that yields the largest cross-sectional area. Further, the filling power of the shredded first tobacco material may be maximised by selecting an acceptable first reduce specification. This leads to an improved filling energy of the minimize filler as an entire, significantly when the primary tobacco materials is mixed with no much less than another tobacco materials.
Experiments have been carried out so as to assess the influence of various shapes and cut specs to key parameters of tobacco reduce filler particles, such because the filling power. In more detail, Figure 1 exhibits a zigzag-shaped strip and Figure 2 exhibits a wave-shaped strip. Where the cut strip is zigzag-shaped or wave- shaped, it’s potential to measure a wave size of the minimize strip, which substantially corresponds to the strip minimize size divided by the number of repetitions of the zigzag or wave. For instance, within the minimize strip of Figure 1 the zigzag is repeated 10 times. Preferably, a wave size of the sinusoidal form is from about 1 mm to about 15 mm, more ideally from about 2 mm to about 12 mm, much more preferably from 4 mm to 10 mm. Preferably, the tobacco cut filler additional contains a second tobacco material cut in accordance with a second reduce specification differing from the first cut specification for at least considered one of reduce size and cut width.