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A cigarette filter filament and preparation method thereof

A filter and tow technology, which is applied in the fields of e-liquid filter elements, tobacco, melt spinning, etc., can solve the problems that there is no method for preparing cigarette filter tow, and there is no method for preparing cigarette filter tow, so as to achieve good physical and mechanical The effect of performance, low cost and easy quality

Inactive Publication Date: 2007-05-16
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent application document does not involve cigarette filter tip tow and its preparation method
[0005] So far, no lactic acid polymers including polylactic acid, lactide and ε-caprolactone and / or glycolide copolymers have been found as filter tows prepared as raw materials, and there is no information about the cigarette filter tows Preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A polylactic acid (PLA) containing 97% L-lactic acid units and 3% D-lactic acid units was selected for use. The weight-average molecular weight of the polymer is 78,000, the melt flow index is 15.4g / 10min, and the strength of bonding at room temperature with glycerol triacetate (overlapping area 10×3mm 2 ) is 7.0MPa. The melting point by DSC method was 161°C.

[0047] Calculated by weight ratio, weigh 100 parts of PLA, add 0.2 parts of trinonylphenyl phosphite, 0.2 parts of antioxidant 1010, 0.2 parts of calcium stearate, and 1.0 parts of acetyl tributyl citrate , 0.4 part of rutile titanium dioxide (DuPont 902) and 1.0 part of nano-silica micropowder to make a spinning composition.

[0048] The "one-step spinning" process is adopted, that is, spinning on a φ65×28 melt spinning machine (two spinning positions), the temperature of the metering section is controlled at 220±2°C, and the temperature of the spinning assembly is controlled At 205±1℃, the specifications of ...

Embodiment 2

[0050] Calculated by weight ratio, select the same spinning composition and spinning machine, metering pump, spinneret of embodiment 1 for use, adopt " two-step method spinning " technique to carry out single-unit spinning, spinning speed 30r / min, The as-spun filaments were not drawn directly, but were collected at a speed of 100 m / min and then placed at 50°C for 4 hours. Two strands of primary tow are drawn together with a seven-roller drawing machine, the wire feeding speed is 60m / min, the drawing medium is water, the drawing temperature is 80°C, the tow pieces are cooled with tap water after the water is discharged, and the collection speed is 150m / min , to obtain cigarette filter tow. The overall density is 3.0±0.3ktex, the single fiber linear density is 2.5±0.3dtex, the number of crimps is 22±3 / 25mm, the room temperature monofilament strength is 2.0±0.5cN / dtex, and the elongation is 4.3±0.9%.

Embodiment 3

[0052] A random copolymer resin (PLGA) of L-lactide and glycolide is selected, wherein the weight content of lactic acid is 94%, and the weight content of glycolide is 6%. The weight-average molecular weight of the polymer is 128,000, the melt flow index is 10.4g / 10min, and the strength of bonding at room temperature with glycerol triacetate (overlapping area 10×3mm 2 ) is 7.5MPa. The melting point by DSC method was 156°C.

[0053] Calculated by weight ratio, weigh 100 parts of PLGA, add 0.2 parts of trinonylphenyl phosphite, 0.2 parts of antioxidant 1010, 0.2 parts of lithium stearate, and 1.0 parts of acetyl tributyl citrate , 0.5 part of rutile titanium dioxide (DuPont 902) and 1.0 part of nano-silica micropowder to make a spinning composition.

[0054] Using the "one-step spinning" process, spinning on a φ65×28 two-position melt spinning machine, the temperature of the metering section is controlled at 220±2°C, and the temperature of the spinning assembly is controlled a...

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Abstract

The invention relates to a tobacco filter tip and relative preparation, wherein it is formed by spinning the lactic acid polymer resin, drawing, coiling and shaping, while the line density is 2-6dtex, the beam density is 3-6ktex, the coil number is 15-30n / 25mm. And it uses the adhesive method similar acetate fabric. Therefore, its polymer structure and large specific area can support the adsorption on organic, and filter the solid particle.

Description

technical field [0001] The invention relates to a cigarette filter tow and a preparation method thereof, in particular to a biodegradable lactic acid polymer cigarette filter tow and a preparation method thereof Background technique [0002] Cigarette filter is an indispensable part of cigarettes. It can filter, block and absorb harmful components in the breath, such as nicotine and tar. harm. For a long time, two kinds of filter materials have been mainly used in the market, one is cellulose acetate fiber and the other is polypropylene fiber. Cellulose acetate is easily spun into fine denier fibers, and the bonding process from fiber to filter rod is relatively easy. The filter rod and filter tip made have superior comprehensive performance and are suitable for use in medium and high-end cigarettes. However, it uses high-quality wood as raw material, and the process from wood to wood pulp to cellulose acetate is accompanied by more pollution problems. Using dry spinning r...

Claims

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Application Information

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IPC IPC(8): A24D3/04A24D3/06A24D3/02D01F6/62D01D5/08D02G1/00D06C7/02
Inventor 景遐斌杨立新赵淑珍陈学思边新超
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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