Preparation method of polylactic acid cooling modified tow filter stick

A technology of polylactic acid and polylactic acid masterbatch, which is applied in the fields of e-liquid filter elements, applications, tobacco, etc., and can solve problems such as low glass transition temperature and melting point, melting, and no filter section

Pending Publication Date: 2020-10-20
HUBEI CHINA TOBACCO IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polylactic acid is a new type of cooling material in heat-not-burn cigarettes. CN104203015B discloses that polylactic acid film is folded and polymerized as a cooling element in heat-not-burn cigarettes, which reduces the smoke temperature to a certain extent. On the one hand, the glass transition temperature and melting point of lactic acid are relatively low, and it will melt during the suction process, which will affect the suction experience. structural unit

Method used

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  • Preparation method of polylactic acid cooling modified tow filter stick

Examples

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Effect test

Embodiment 1

[0022] Example 1: Preparation method of polylactic acid cooling modified tow filter rod

[0023] The polylactic acid cooling modified tow filter rod is composed of 60 parts by weight of polylactic acid masterbatch, 15 parts by weight of SEBS and 8 parts by weight of PP in a blender and mixed uniformly for 6 minutes. The on-line melt polymerization reaction is extruded by screw screw at a temperature of 185℃. Extrusion, the screw speed is 55r / min, cooling for 2h at 10℃, after entering the melt spinning process, the draft ratio is 2 times, the spinning speed is 1000m / min, the crimping temperature is 85℃, drying at 65℃ After setting for 17 minutes, the tow is finally cooled and solidified at 20±2℃ to obtain the polylactic acid tow, and the filter rod is formed on a conventional filter rod machine.

[0024] The polylactic acid cooling modified material prepared in this example was substituted for the Philip Morris International heat-not-burn cigarette cooling section, and smoking was s...

Embodiment 2

[0025] Example 2: Preparation method of polylactic acid cooling modified tow filter rod

[0026] The polylactic acid cooling modified tow filter rod is composed of 65 parts by weight of polylactic acid masterbatch, 18 parts by weight of SEBS and 4 parts by weight of PP in a blender and mixed uniformly for 5 minutes, at 178°C, the on-line melt polymerization reaction is extruded by screw screw. Extrusion, screw speed 60r / min, cooling for 2h in 10℃ environment, after entering the melt spinning process, draft ratio is 3 times, spinning speed 1200m / min, crimp molding temperature 65℃, drying at 72℃ After shaping for 18 minutes, the tow is cooled and solidified and shaped at 20±2℃ to obtain the polylactic acid tow, and the filter rod is formed on a conventional filter rod machine.

[0027] The polylactic acid cooling modified material prepared in this example was substituted for the Philip Morris International heat-not-burn cigarette cooling section, and smoking was simulated according t...

Embodiment 3

[0028] Example 3: Preparation method of polylactic acid cooling modified tow filter rod

[0029] The polylactic acid cooling modified tow filter rod is composed of 68 parts by weight of polylactic acid masterbatch, 16 parts by weight of SEBS and 7 parts by weight of PP in a blender and mixed uniformly for 8 minutes, and the on-line melt polymerization reaction is extruded by screw screw at 192℃. Extrusion, screw speed 45r / min, cooling for 1h in 8℃ environment, after entering the melt spinning process, the draft ratio is 1 times, spinning speed 800m / min, crimp forming temperature 72℃, drying at 68℃ After shaping for 20 minutes, the tow is cooled and solidified and shaped at 20±2°C to obtain the polylactic acid tow, and the filter rod is formed on a conventional filter rod machine.

[0030] The polylactic acid cooling modified material prepared in this example was substituted for the Philip Morris International heat-not-burn cigarette cooling section, and smoking was simulated accord...

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Abstract

The invention belongs to the technical field of tobacco product production. The invention provides a preparation method of a polylactic acid cooling modified tow filter stick. The preparation method comprises the following steps: uniformly mixing polylactic acid master batch, SEBS and PP, carrying out online melt polymerization reaction at 140-200 DEG C, carrying out screw extrusion through a screw, cooling, carrying out melt spinning, drafting, curling, drying, shaping to obtain polylactic acid tows, and carrying out filter stick molding on a conventional filter stick machine. Compared with the traditional polylactic acid tow filter stick, the polylactic acid cooling modified tow filter stick prepared by the invention has the advantages that the melting point is higher; the heat resistance is greatly improved, the head shrinking phenomenon is avoided in the heating non-combustion tobacco product, meanwhile, the smoke temperature is remarkably reduced, the problems that the heating non-combustion tobacco product is high in smoke temperature, high in hot pricking feeling and poor in smoking comfort are solved, and the method is suitable for industrial production.

Description

Technical field [0001] The present invention belongs to the technical field of tobacco product production. More specifically, the present invention relates to a method for preparing a polylactic acid cooling modified tow filter rod. Background technique [0002] In recent years, heat-not-burn tobacco products have developed rapidly. Heat-not-burn tobacco products do not need to ignite tobacco for consumers to smoke and use. The heat source temperature is below 400°C. Because the heating temperature is much lower than the burning temperature of traditional cigarettes, the smoke contains relatively few harmful substances. However, due to its relatively small volume, compared with traditional cigarettes, there is no longer unburned tobacco section and filter rods for cooling and cooling. The inlet temperature of the flue gas will be much higher than that of traditional cigarettes, which will cause significant impact on smokers. The burning sensation and pungent irritation of cigare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24D3/02
CPCA24D3/0229
Inventor 杨光远彭三文王庆九侯宁曹祥薇
Owner HUBEI CHINA TOBACCO IND
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