Shredding method and shredding blade capable of controlling distribution of tobacco shred lengths

Abstract

The invention provides a shredding method and a shredding blade capable of controlling distribution of tobacco shred lengths and relates to the technical field of tobacco processing. Tobacco materials are subjected to pretreatment, shredding, collection and the like and then respectively cut into cut tobacco. The shredding blade capable of controlling distribution of tobacco shred lengths is used for shredding. The blade consists of knife edges used for cutting and notches not used for cutting, the knife edges and the notches are alternately distributed, the blade consists of two cutter blades (a cutter blade A and a cutter blade B) of the same structure, and the knife edges of the cutter blade A correspond to the notches of the cutter blade B. By adopting the shredding method and the shredding blade, tobacco raw materials can be cut into tobacco shreds of which the widths are the same and the length distribution ratio meets the cigarette rolling demand, the scrap consumption caused by shredding is reduced, the capability of filling cigarettes with tobacco shreds is improved, the tobacco shred consumption in cigarettes is reduced, and the cigarette burning performance and the cigarette sensory quality are improved.

Description

technical field [0001] The invention relates to a cutting method and blade capable of controlling the length distribution of shredded tobacco, and relates to the technical field of tobacco processing, in particular to a cutting technology capable of controlling the length distribution of shredded tobacco when used in a shredding machine. Background technique [0002] Tobacco leaves are threshed and rebaked to separate the stems, and the leaves without stems after separation are cut into shredded tobacco, which becomes the raw material of cigarettes. The shredded tobacco is detected by screening equipment. The length of shredded tobacco is longer than 3.35mm, and the length is 3.35mm. The length between 2.5mm and 2.5mm is medium cut, the length between 2.25mm and 1.0mm is short cut, and the length less than 1.0mm is shredded cut tobacco. The ratio of various lengths of shredded tobacco to the overall mass is its length distribution. It is represented by long filament rate, me...

AI Technical Summary

Problems solved by technology

[0004] Sheet tobacco less than 6mm square accounts for about 7% of the total material. Most of this part becomes shredded shreds after shredding, which will reduce the filling value of shredded tobacco and increase the amount of shredded shreds at the end of cigarettes. A process for screening materials below 6mm will be set up, but the current material flow rate of the silk production line is generally above 5000Kg / h, resulting in a low screening rate, and only about 2% of this part of the material can be screened out, most of which are mixed in larger shredded leaves

[0005] Lamina tobacco larger than 20mm square after threshing leaves and stems generally accounts for about 50% of the total material. The cut tobacco cut by these materials is longer and accounts for a higher proportion in the cut tobacco, which may easily lead to the occurrence of short spots and bamboo joint defects in the produced cigarettes. In the prior art, the tobacco materials greater than 6mm are generally cut into shreds uniformly, so that the cut tobacco filament rate and shredded shred rate are higher, which will reduce the filling value of the shredded tobacco, and then have a negative impact on the density, combustion temperature, and sensory quality of the cigarettes produced. Negative impact

[0006] Chinese patent CN201552599U discloses a cutting blade capable of fixed length cutting, which is composed of equidistant rectangular incisions, and can cut tobacco raw materials into shredded tobacco with uniform width and length, but shredded tobacco with the same width and length cannot improve the performance of shredded tobacco in cigarettes. Filling ability in medium, and sensory quality when burning and smoking

[0007] Chinese patents CN201986675U and CN101366549B disclose a shredded blade capable of controlling the length of shredded tobacco. The beveled cutting edge of the entire shredded blade is a continuous broken line, and the protruding part and the concave part of the broken line of the cutting edge are in contact with the cut material The time difference produces the effect of controlling the length of shredded tobacco, but the folding line of the cutting edge is still on the same cutting plane, so the actual effect of controlling the length of shredded tobacco is very weak

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