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A high monofilament linear density polylactic acid tow for cigarettes and its preparation method

A monofilament line density, polylactic acid smoke technology, applied in the direction of filament/thread forming, single-component polyester rayon, single-component synthetic polymer rayon, etc., can solve the problem of low suction resistance and hardness of filter rods, Odor, low filtration and other problems, to achieve the effect of reducing degradation, high molecular weight, good physical performance indicators

Active Publication Date: 2020-12-08
湖北金叶玉阳化纤有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing polylactic acid tobacco tow with high monofilament linear density, which solves the spinnability problem of polylactic acid crude fiber, the problem of peculiar smell caused by degradation, the problem of subsequent molding on the machine, Due to the low suction resistance and hardness of the filter rod, when the fiber is used as a filter material for cigarettes, it has the characteristics of safety, environmental protection, degradability, low filtration, and no peculiar smell. a new option

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In the above spinning process, the spinneret adopts a trilobal spinneret hole of 0.72×0.20mm, the number of spinneret holes is 500, the metering pump is 40cc / rev, and the spinning speed is 1000m / min. Adjust the metering pump Speed: 26~78rev / min,

[0035]It can produce polylactic acid as-spun fibers with monofilament linear density of 25-75dtex; in the post-treatment process, the first water bath draft is 2.8 times, and the second water bath draft is 1.1 times, and polylactic acid fibers with monofilament linear density of 8.1-24.3dtex can be produced . By adjusting the number of bundle barrels and changing the number of fibers, a series of polylactic acid fiber tows with a linear density of 8.1 to 24.3 dtex and a linear density of tows of 1.0 to 8.0 ktex (1 ktex = 10000 dtex) can be produced, which can meet the requirements of thick and medium Forming requirements for filter rods of different specifications such as , fine and so on.

[0036] When the speed of the mete...

Embodiment 2

[0038] In the above spinning process, the spinneret adopts a three-lobed spinneret hole of 0.85×0.25mm, the number of spinneret holes is 150, the metering pump is 2.4cc / rev, and the spinning speed is 100m / min. The pump speed is: 31.5-63rev / min, which can produce polylactic acid primary fibers with a monofilament linear density of 60-120dtex; in the post-processing process, the first water bath draft is 2.5 times, and the second water bath draft is 1.2 times, and monofilament yarns can be produced Polylactic acid fiber with a density of 20-40dtex. By adjusting the number of bundle barrels and changing the number of fibers, a series of polylactic acid fiber tows with a linear density of 20-40dtex and a linear density of 1.0-8.0ktex can be produced, which can meet the requirements of coarse, medium and fine filters. Rod forming requirements.

[0039] When the speed of the metering pump is adjusted to 47.3rev / min, the linear density of the monofilament is 30dtex, the number of bu...

Embodiment 3

[0041] In the above spinning process, the spinneret adopts a trilobal spinneret hole of 1.2×0.35mm, the number of spinneret holes is 100, the metering pump is 2.4cc / rev, and the spinning speed is 100m / min. The pump speed is: 35-77rev / min, which can produce polylactic acid primary fibers with a monofilament linear density of 100-220dtex; in the post-processing process, the first water bath draft is 2.6 times, and the second water bath draft is 1.05 times, and monofilament yarns can be produced Polylactic acid fiber with a density of 36.6~80.5dtex. By adjusting the number of bundle barrels and changing the number of fibers, a series of polylactic acid fiber tows with a linear density of 36.6-80.5dtex and a linear density of 1.0-8.0ktex can be produced, which can meet different specifications such as thick, medium and thin. Forming requirements for filter rods.

[0042] Through the adjustment of the metering pump, when the monofilament linear density is 60dtex, adjust the number...

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PUM

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Abstract

The invention provides polylactic acid tobacco tows with high monofilament linear density and a preparation method thereof. A low-temperature fast spinning technology and a special-shaped macroporousspinneret plate are adopted during spinning, secondary oiling is performed in the spinning process, a small-molecule gas pumping device is additionally arranged at the outlet of a spinning manifold, and process schemes of secondary water bath drawing, heated curling, relaxed heat setting and the like are adopted during post-treatment, thereby preparing the polylactic acid tobacco tows with high monofilament linear density, wherein the monofilament linear density is 10-80dtex, and the tow linear density is 1-8ktex. The tows have no peculiar smell, can be degraded and can be used for preparing acigarette filter rod with low suction resistance or ultra-low suction resistance.

Description

technical field [0001] The invention belongs to the field of tow filter materials matched with novel tobacco, in particular to a preparation method of polylactic acid tow with high monofilament linear density. Background technique [0002] Cigarette filters play an important role in reducing tar and harm, improving taste, and improving cigarette quality, and are an indispensable part of the cigarette production process. The main function and purpose of cigarette filter materials currently on the market is to filter, and the materials with high filtration efficiency of medium and low monofilament linear density and medium and high resistance to draw are generally used; with the advancement of science and technology and the development of new tobacco technology, harmful substances in cigarette smoke The content of substances has dropped significantly, and how to maintain the appropriate amount of smoke and smoke in new tobacco to meet the needs of specific consumer groups has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/62D01F11/08D01D5/253D01D5/096D01D5/088D01D5/08D06B3/04D02J1/22D02G1/20A24B15/30
CPCA24B15/308D01D5/08D01D5/0885D01D5/096D01D5/253D01F6/625D01F11/08D02G1/205D02J1/223D06B3/04
Inventor 方斌陈水平胡旺顺
Owner 湖北金叶玉阳化纤有限公司