Preparation method for cigarette filter tip adopting electrostatically spun cellulose acetate membrane

Abstract

The invention relates to a preparation method for a cigarette filter tip adopting an electrostatically spun cellulose acetate membrane, and the method includes the following steps: (1) cellulose diacetate is dissolved in the mixture of acetone and dimethylacetylamide, electrostatic spinning is carried out, and thereby the nano cellulose acetate membrane is obtained; (2) cellulose acetate tows in a cigarette are pulled out, the nano cellulose acetate membrane is laid between the filter tip and the cigarette along the cross-sectional direction of the filter tip, the cellulose acetate tows which are originally pulled out are then put into the cigarette, the part of the filter tip, which exceeds connecting paper, is cut off, and thereby the improved cigarette filter tip is fabricated. The preparation method uses the electrostatic spinning technology to fabricate the nano cellulose acetate membrane and adds the nano cellulose acetate membrane into the cigarette filter tip, the nano cellulose acetate membrane not only can be perfectly combined with the cigarette filter tip, but also can enhance the harmful gas-filtering performance of the cigarette filter tip, meanwhile, the preparation method is easy to operate, the efficiency is relatively high, and the cigarette filter tip can remarkably reduce the contents of various harmful components, and has a good market prospect.

Description

technical field [0001] The invention belongs to the field of application of cellulose acetate membranes, in particular to a method for preparing a cigarette filter tip using electrospun cellulose acetate membranes. Background technique [0002] Electrospinning technology has a history of nearly 80 years. It was first filed in 1934 when Formhals applied for a patent for an electrospinning device for preparing polymer ultrafine fibers. Electrospinning is to charge the polymer solution or melt with high-voltage static electricity, and the charged polymer droplets form a Taylor cone at the apex of the capillary under the force of the electric field. When the electric field force is strong enough, the polymer droplets can overcome the surface tension to form a fine spray stream. The solvent evaporates during the spray process of the fine stream, and the product finally falls on the receiving device to form a fiber mat similar to a non-woven fabric. The fiber fineness obtained by...

AI Technical Summary

Problems solved by technology

[0005] At present, reducing the content of harmful substances in cigarettes is mostly based on reducing the amount of harmful substances produced in cigarettes. By controlling the chemical components in the formula, adding tobacco flakes, using expanded shredded tobacco, combustion enhancers, changing cigarette specifications, reducing the amount of shredded tobacco, and reducing the amount of cigarettes The number of suction ports, etc.; to improve the efficiency of flue gas filtration by changing the structure of the filter tip, adding adsorption materials, etc.

On the other hand, although acetate fiber used in cigarette filters has the advantages of good taste absorption, firm texture, high efficiency of trapping smoke tar, and beautiful configuration, it is widely used in the high-end tobacco industry, but for the cellulose acetate in a finished cigarette filter The amount of cellulose acetate is certain, which limits its filtering effect on harmful substances in the flue gas

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