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Method for preparing tows for modified cigarettes

A technology for tow and cigarettes, which is applied in the field of preparation of blended modified polylactic acid tow for cigarettes, can solve problems such as poor mechanical properties, high preparation process, and high specific weight, and achieve improved melt flow performance and good filtration effect, the effect of increasing the surface area

Active Publication Date: 2011-07-27
JIANGSU DAYA CIGARETTE FILTER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a modified polylactic acid fiber for cigarettes with low process requirements, so as to solve the disadvantages of high preparation process under the existing technical conditions, poor mechanical properties of the fiber under high temperature conditions, large specific gravity, and difficulty in forming the tip rod. The disadvantage is that this modified polylactic acid fiber is realized by blending melt spinning of polylactic acid and polypropylene

Method used

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  • Method for preparing tows for modified cigarettes
  • Method for preparing tows for modified cigarettes
  • Method for preparing tows for modified cigarettes

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Mix fiber-grade polypropylene particles, functional masterbatches and polylactic acid particles, and stir evenly. The proportions of the components are: functional masterbatch: no more than 5%; polylactic acid: no more than 10%; the rest is fiber-grade poly Propylene particles; fiber-grade polypropylene particles have a viscosity average molecular weight of 180,000 to 200,000, and a molecular weight distribution of less than 6. The functional masterbatch is a mixture of molecular weight adjusting masterbatch, fiber strength adjusting masterbatch and whitening masterbatch according to the weight component ratio of 2:1:2. The weight average molecular weight M of polylactic acid particles wBetween 80,000 and 160,000. The mixed particles are extruded into a spinning melt through a screw extruder, and the spinning melting temperature in the screw extruder is 170-240°C. Then spinning, the number of holes in the spinning spinneret is 5500 to 11500 holes; the spinning melt af...

Embodiment 2

[0034] Take 75kg of polylactic acid slices with a molecular weight of 100,000 and MI=15-30g / 10min, take 2,000g of polypropylene slices with a molecular weight of about 180,000 and MT=15-30g / 10min, and 1,000g of functional masterbatches, which are molecular weight adjustments The masterbatch, the fiber strength adjusting masterbatch and the whitening masterbatch are mixed according to the weight component ratio of 2:1:2. Put it into the screw extruder, the temperature of the spinning equipment is controlled at 170-250°C, and it is melted under the action of the screw extruder. The spinneret hole is 9100 three-lobed special-shaped, and the air temperature of the tow cold blower is controlled at 12-30°C , the wind speed is 0.2-0.5m / s, and the tow is drawn again through the slow drawing roller, water bath, and fast drawing roller. The drafting ratio is 2 to 4 times that of the initial drawing, and the temperature of the water bath is controlled at 50-70°C , the drawing speed of th...

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Abstract

The invention relates to a method for preparing tows for blended modified polylactic acid cigarettes. Fiber grade polypropylene particles, functional master batches and polylactic acid particles are uniformly mixed according to a certain ratio, and the tows for polylactic acid cigarettes are prepared through the working procedures of spinning, oiling, drafting, wrapping and drying. The method has a simple process and high speed to form, the produced product can reduce the specific weight of polylactic acid fiber, the operational performance is increased, the surface area of the fiber is increased, grain phase particles in smoke can be effectively absorbed, and a good filtering effect is generated.

Description

technical field [0001] The invention relates to a preparation method of blended modified polylactic acid tobacco tow. technical background [0002] At present, the conventional cigarette filter materials in the market are cellulose acetate and polypropylene fiber. Because of its excellent performance, cellulose acetate is the most widely used filter material for cigarettes today. Fiber acetate contains a large number of polar functional groups such as acyl groups and ether groups. Excellent adsorption performance. In filter molding, triacetin is used for plasticization and bonding, forming a three-dimensional network structure inside the tow, increasing fiber irregularity and specific surface area, high bonding fastness and stable bonding. Acetate fiber has excellent physical adsorption properties. After years of development, the polypropylene fiber cigarette filter material, especially the breakthrough in the water-soluble adhesive, has greatly improved the filtration perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D10/00D02J1/22D02G1/00
Inventor 赵义仁
Owner JIANGSU DAYA CIGARETTE FILTER MATERIAL CO LTD
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