Mixed single-denier tow for reduced-focus cigarette filter rods and its preparation method and application

Abstract

The invention relates to a mixed single-denier tow with an X-shaped section for a reduced-focus cigarette filter rod, a preparation method and application thereof. The mixed single denier tow is composed of monofilaments with different linear densities obtained by spinning through at least 3 kinds of spinneret holes of different specifications in the same spinneret. The spinneret holes of different specifications have different apertures, different The cross-sectional shape or different aperture and cross-sectional shape; the monofilament linear density range is 1.0~3.5dtex, the monofilament linear density variation coefficient is 0.10~0.50, and the monofilament cross-sectional shape is at least two of X type, Y type and O type; The breaking strength of the mixed single denier tow is ≥18.0N / Ktex, the water content is (6.0±1.6)%, the oil content is (0.70~1.50)%, the residual acetone content is ≤0.30%, and the titanium dioxide content is (0.40) ±0.20)%. The invention has the characteristics of easier processing, high effective operation rate and more stable coking efficiency.

Description

technical field

[0001] The invention relates to the field of cigarette manufacturing, in particular to a mixed single-denier tow with an X-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...

Examples

Embodiment 1

[0022] A method for preparing mixed single-denier tows for reduced-focus cigarette filter rods with an X-shaped cross-section. The vinegar sheet is dissolved in acetone to form a slurry, the slurry is filtered, and then enters the spinning equipment, and passes through the same spinneret. The spinneret holes with different apertures are spun to form three kinds of monofilaments with different cross-sectional shapes and monofilament linear densities. The spinneret holes with three different apertures are required to be evenly distributed in the same spinneret according to the weight ratio; The monofilament linear densities described above are 2.3dtex, 2.7dtex, and 3.0dtex respectively, and the ratio is 1:1:1. The cross-sectional shape of the monofilament is X-type, Y-type and O-type. Bundling, drying, spinning, and packaging finally produce a finished product of mixed single-denier fiber tow. The breaking strength of the mixed single denier tow is ≥18.0N / Ktex, the water content...

Embodiment 2

[0024] A method for preparing mixed single-denier tows for reduced-focus cigarette filter rods with an X-shaped cross-section. The vinegar sheet is dissolved in acetone to form a slurry, the slurry is filtered, and then enters the spinning equipment, and passes through the same spinneret. The spinneret holes with different apertures are spun to form three kinds of monofilaments with different cross-sectional shapes and monofilament linear densities. The spinneret holes with three different apertures are required to be evenly distributed in the same spinneret according to the weight ratio; The monofilament linear densities described above are 2.3dtex, 2.7dtex, 3.0dtex, and the ratio is 1:1:1. The cross-sectional shape of the monofilament is X-type, X-type and O-type. Bundling, drying, spinning, and packaging finally produce a finished product of mixed single-denier fiber tow. The breaking strength of the mixed single denier tow is ≥18.0N / Ktex, the water content is (6.0±1.6)%, t...

Embodiment 3

[0026] A method for preparing mixed single-denier tows for reduced-focus cigarette filter rods with an X-shaped cross-section. The vinegar sheet is dissolved in acetone to form a slurry, the slurry is filtered, and then enters the spinning equipment, and passes through the same spinneret. The spinneret holes with different apertures are spun to form three kinds of monofilaments with different cross-sectional shapes and monofilament linear densities. The spinneret holes with three different apertures are required to be evenly distributed in the same spinneret according to the weight ratio; The monofilament linear densities described above are 2.3dtex, 2.7dtex, and 3.0dtex, respectively, and the ratio is 1:1:1. The cross-sectional shape of the monofilament is Y-shaped, Y-shaped and O-shaped. Bundling, drying, spinning, and packaging finally produce a finished product of mixed single-denier fiber tow. The breaking strength of the mixed single denier tow is ≥18.0N / Ktex, the water ...

technical field

[0001] The invention relates to the field of cigarette manufacturing, in particular to a mixed single-denier tow with an X-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...

Examples

Embodiment 1

[0022] A method for preparing mixed single-denier tows for reduced-focus cigarette filter rods with an X-shaped cross-section. The vinegar sheet is dissolved in acetone to form a slurry, the slurry is filtered, and then enters the spinning equipment, and passes through the same spinneret. The spinneret holes with different apertures are spun to form three kinds of monofilaments with different cross-sectional shapes and monofilament linear densities. The spinneret holes with three different apertures are required to be evenly distributed in the same spinneret according to the weight ratio; The monofilament linear densities described above are 2.3dtex, 2.7dtex, and 3.0dtex respectively, and the ratio is 1:1:1. The cross-sectional shape of the monofilament is X-type, Y-type and O-type. Bundling, drying, spinning, and packaging finally produce a finished product of mixed single-denier fiber tow. The breaking strength of the mixed single denier tow is ≥18.0N / Ktex, the water content...

Embodiment 2

[0024] A method for preparing mixed single-denier tows for reduced-focus cigarette filter rods with an X-shaped cross-section. The vinegar sheet is dissolved in acetone to form a slurry, the slurry is filtered, and then enters the spinning equipment, and passes through the same spinneret. The spinneret holes with different apertures are spun to form three kinds of monofilaments with different cross-sectional shapes and monofilament linear densities. The spinneret holes with three different apertures are required to be evenly distributed in the same spinneret according to the weight ratio; The monofilament linear densities described above are 2.3dtex, 2.7dtex, 3.0dtex, and the ratio is 1:1:1. The cross-sectional shape of the monofilament is X-type, X-type and O-type. Bundling, drying, spinning, and packaging finally produce a finished product of mixed single-denier fiber tow. The breaking strength of the mixed single denier tow is ≥18.0N / Ktex, the water content is (6.0±1.6)%, t...

Embodiment 3

[0026] A method for preparing mixed single-denier tows for reduced-focus cigarette filter rods with an X-shaped cross-section. The vinegar sheet is dissolved in acetone to form a slurry, the slurry is filtered, and then enters the spinning equipment, and passes through the same spinneret. The spinneret holes with different apertures are spun to form three kinds of monofilaments with different cross-sectional shapes and monofilament linear densities. The spinneret holes with three different apertures are required to be evenly distributed in the same spinneret according to the weight ratio; The monofilament linear densities described above are 2.3dtex, 2.7dtex, and 3.0dtex, respectively, and the ratio is 1:1:1. The cross-sectional shape of the monofilament is Y-shaped, Y-shaped and O-shaped. Bundling, drying, spinning, and packaging finally produce a finished product of mixed single-denier fiber tow. The breaking strength of the mixed single denier tow is ≥18.0N / Ktex, the water ...

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