Carbon-containing polypropylene filament tow for cigarette and preparation method thereof

Abstract

The invention discloses a carbon-containing polypropylene tow for cigarettes and a preparation method thereof. The carbon-containing polypropylene tow is prepared by adding activated carbon functional masterbatches to polypropylene slices, blending uniformly, and then melt-spinning. The activated carbon functional masterbatch with a carbon content of 10-40% is selected to be evenly blended with the cooling masterbatch and modified masterbatch, and the proportion of the main material polypropylene chips is controlled by automatic metering, and melt-spun through a screw extruder Finally, after oiling, drawing, washing, crimping, drying and other processes, the carbon-containing polypropylene tow for cigarettes is obtained. The activated carbon particle size in the activated carbon functional masterbatch is 0.3~2.0μm, and the pore size is 0.5~3nm. The specific surface area is 600~1500m2 / g. The carbon-containing polypropylene tow for cigarettes can be spun directly on the one-step polypropylene tow spinning equipment for cigarettes. It has strong operability, uniform distribution of activated carbon in the tow, is not easy to fall, and the carbon content is easy to adjust. , the advantage of low production cost, the indicators of the prepared carbon-containing polypropylene tow for cigarettes meet the industry requirements and national standards.

Description

technical field [0001] The invention relates to a cigarette filter tip material and a preparation method thereof, in particular to a carbon-containing polypropylene tow for cigarettes and a preparation method thereof. Background technique [0002] In recent years, due to the adjustment of the structure of cigarette products by the State Tobacco, especially the improvement of the two requirements for cigarettes, "coke reduction, harm reduction, and green environmental protection", the tobacco industry has had to work hard on tobacco leaf formula and filter functions to achieve "coke reduction and reduction." Harmless, green and environmental protection" requirements. Since part of the particle and gas components of the smoke itself exist in the tobacco leaves or are produced during the combustion process, developing new filter materials and enhancing filter functions is one of the ways to meet the requirements of "coke reduction, harm reduction, and environmental protection"....

AI Technical Summary

Problems solved by technology

At present, the commonly used cellulose acetate filter and polypropylene fiber filter do not have a strong selective adsorption function for the components in the smoke, but some tobacco companies try to add cellulose acetate filter with strong adsorption function during the molding process of the cellulose acetate filter rod. Activated carbon, or through the method of compounding filter rods to achieve selective adsorption and stronger filtration, and some carbon-added cellulose acetate filter rods or various composite rods have entered the tobacco market, but the problem is that the cellulose acetate filter rods Adding activated carbon during the forming process will lead to difficulty in controlling the amount of carbon added, coarse activated carbon particles, uneven distribution of activated carbon in the filter, carbon particles are easy to pollute the filter rod incision and wear out the cutting blade, resulting in difficult processing and filter suction resistance , hardness, roundness, unstable appearance and other defects, and the molding of the composite rod will undoubtedly increase the production cost of the filter rod

In addition, adding activated carbon in the process of forming cellulose acetate sticks or adding activated carbon in the process of forming composite rods will cause charcoal smell in the smoke, which will affect the taste of consumers, and it is difficult to popularize and apply in flue-cured tobacco

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