A mixed single denier tow with O-shaped cross-section for reduced-focus cigarette filter rods and its preparation method and application

Abstract

The invention relates to the field of cigarette manufacturing, and particularly relates to a mixed single-denier tow having an O-shaped cross section and being used for a tar reduction cigarette filter, and a preparation method and the application of the mixed single-denier tow. The mixed single-denier tow is formed from three kinds of monofilaments with different monofilament linear densities, which are manufactured by spinning after jet from three spinneret holes with different hole diameters in the same spinneret plate; the three spinneret holes with different hole diameters are uniformly distributed in the same spinneret plate according to the weight ratio requirement; the linear density range of the monofilaments ranges from 1.0 dtex to 3.5 dtex; the linear density variable coefficient of the monofilaments ranges from 0.10 to 0.50; the cross section of the monofilaments is O-shaped; and the breaking strength of the mixed single-denier tow is higher than or equal to 18.0 N / Ktex; the moisture content is (6.0+ / -1.6)% ; the oil content is (0.70-1.50)%; the residual acetone content is lower than or equal to 0.30%; and the titanium dioxide content is (0.40+ / -0.20)%. The mixed single-denier tow has the characteristics that the processing is easier, the effective operation rate is high, and the tar reduction efficiency is more stable.

Description

technical field [0001] The invention relates to the field of cigarette manufacturing, in particular to a mixed single-denier tow with an O-shaped cross section for a reduced-focus cigarette filter rod, a preparation method and application thereof. Background technique [0002] As consumers pay more and more attention to smoking and health issues, the tobacco industry has made some progress in tar reduction and harm reduction. The tar content of cigarettes has dropped from 17mg in 2002 to the current 11mg. By 2015, the State Tobacco Monopoly Administration requires that cigarettes The amount of tar on the box label shall not exceed 10mg, and the hazard index shall not exceed 9, which poses new challenges to the tobacco industry. At present, the low-tar cigarettes sold in the country are basically reduced by punching holes in cigarettes through special-shaped filter rods such as composite filter rods and paper filter rods. [0003] Chinese invention patent (application number...

AI Technical Summary

Problems solved by technology

[0005] However, the production process of the above-mentioned special-shaped filter rod is complicated, the cost is high, the production efficiency is low, and the smoking quality of cigarettes is also difficult for consumers to accept. Therefore, a new type of tow is developed. The process technology is simple and its coke reduction efficiency and suction quality are improved

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