How to make cigarettes?

& lt 1 & gt； Agricultural treatment of tobacco

Many crops become products after harvesting and drying. After tobacco leaves are harvested, beneficial technologies should be applied in the process of drying and dehydration to promote the transformation of contents. This is not simple drying, so it is called modulation. All kinds of tobacco leaves have their corresponding varieties, cultivation measures and modulation methods, and their names are also named by modulation methods, such as "sun-cured tobacco", "air-cured tobacco" and "flue-cured tobacco". There are also alternate modulation methods such as "half-covered and half-baked", "half-dried and half-baked" and "half-dried and half-baked".

The curing of flue-cured tobacco in China is called curing, which can be divided into primary curing and secondary curing. Fresh tobacco leaves collected by scattered farmers in tobacco-growing areas were put into curing barn and modulated by artificially controlling specific technological conditions. The sun-dried flue-cured tobacco is called primary flue-cured tobacco, which is the raw material of cigarette industry, so it is also called raw tobacco.

The moisture content of raw tobacco is unstable, generally between 14- 18%, which is easy to mildew and deteriorate, which is not conducive to preservation or transportation. In order to make tobacco leaves better after long-term storage, redrying is needed. Flue-cured tobacco leaves are called redried leaves after concentrated baking in redrying plant. Its functions and purposes are:

(1) Adjust the humidity. The moisture content of the main vein of the original tobacco is more than that of the leaves. After redrying, the moisture content is controlled within 1 1- 13%, and the whole leaf is uniform, which can be stored for a long time without damage during transportation.

(2) Remove soil and prevent insects. Dust removal, pest control, sterilization, mildew prevention and moth prevention. (Fake cigarettes are mainly eaten by insects)

(3) favorable fermentation. After redrying, there is residual heat, and after pressure packaging, the pungent, bitter and irritating smell is completely eliminated through the residual activity of dead cells and natural fermentation under the action of microorganisms. (Fake cigarettes omit or shorten this process)

(4) promote aging (good tobacco leaves are like wine, this process is necessary. Inferior tobacco leaves ignore this process. )。 After fermentation, under the condition of natural accumulation without changing temperature and moisture, after a long period of slow and weak changes in chemical composition and physical properties, the tobacco leaves that did not completely turn yellow during initial curing can turn yellow, with rich aroma, mellow taste, good elasticity, toughness and combustibility.

(5) Industrialization of grading standards is suitable for manufacturing cigarettes. (inferior products become the main force of fake cigarettes)

Production of<2> Filterless Cigarettes

Choosing tobacco leaves (decisive factor, the best tobacco leaves in China are from Yunnan, and those in the United States are from California. Fake cigarettes not only use tobacco leaves from poor producing areas, but also use leftovers such as tobacco stems. )

incision

Feed pretreatment

Cut, bake and mix (the key point is that the mixed spices determine the taste of cigarettes. Guangzhou's famous "double happiness" mid-range cigarette-pay attention to Guangzhou's, don't confuse it with Shanghai's and Wuhan's, the latter two are completely low-grade cigarettes, and the symbol is the taste brought by special spices. )

Rolling connection

Packaging (the key point is that the paper quality of fake cigarettes is not as good as toilet paper)

Production of<3> Filter-tip Cigarette

(A) the production process of filter tip

Acetic acid synthetic fiber (here, the quality determines the efficiency of the filter element. /kloc-one of the important criteria for judging the authenticity of foreign cigarettes 0/0 years ago was to pinch the filter tip. Only those with soft edges and hard ribs in the middle are genuine products, and those with flat edges are fakes. At present, the quality of domestic acetate fiber is good, so this method is not allowed. )

cigarette paper

incision

Molding/winding/forming

(b) Bonding/packaging