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Preparing method for filter tip adsorption bar made of cellulose acetate open-cell micropore foam material

A technology of microporous foaming material and cellulose acetate, which is applied in the fields of e-liquid filter elements, applications, tobacco, etc., can solve the problems of difficult melting processing and wide application, and achieve good smoke interception effect, low price, and high-quality equipment The effect of convenient transformation

Active Publication Date: 2016-06-22
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the thermal degradation temperature of cellulose acetate, especially cellulose diacetate, is close to the melting temperature, it is difficult to carry out melt processing and is difficult to be widely used. Therefore, it is necessary to develop a cellulose acetate that improves the foaming performance of cellulose acetate as a Filter Adsorption Stick Technology

Method used

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  • Preparing method for filter tip adsorption bar made of cellulose acetate open-cell micropore foam material
  • Preparing method for filter tip adsorption bar made of cellulose acetate open-cell micropore foam material
  • Preparing method for filter tip adsorption bar made of cellulose acetate open-cell micropore foam material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Prepare materials according to the following components by mass, and mix them to obtain a mixed material:

[0026] 99 parts of cellulose triacetate, 1 part of polypropylene, 1 part of triethyl citrate, 5 parts of sodium carbonate, 4 parts of phosphite additives;

[0027] (2) Adopt a conventional twin-screw extrusion foam molding unit, control the inlet temperature to 150°C, the temperature in the first stage to 175°C, the temperature in the second stage to 185°C, the temperature in the third stage to 195°C, and the temperature in the fourth stage to 200°C, the temperature of the fifth stage is 185°C, and the temperature of the die is 150°C. Add the mixture obtained in step (1), and then add 10 parts by mass of supercritical carbon dioxide in the second stage to extrude into a circular mold. , foaming at 240° C. for 5 minutes after extrusion to obtain filter adsorption sticks of cellulose acetate open-cell microporous foaming material. Adding the obtained round adso...

Embodiment 2

[0029] (1) Prepare materials according to the following components by mass, and mix them to obtain a mixed material:

[0030] 70 parts of cellulose diacetate, 30 parts of polypropylene, 1 part of AC foaming agent;

[0031] (2) Adopt a conventional twin-screw extrusion foam molding unit, control the inlet temperature at 175°C, the temperature at the first stage at 185°C, the temperature at the second stage at 195°C, the temperature at the third stage at 200°C, and the temperature at the fourth stage at 195°C, the temperature of the fifth section is 195°C, and the temperature of the die is 185°C. Add the mixed material obtained in step (1), and then add 1 mass part of supercritical carbon dioxide in the second section to extrude into a triangular mold. After extrusion, foam at 200° C. for 1 min to obtain a cellulose acetate open-pore microporous foam material filter adsorption rod. The obtained triangular adsorption stick is added to the filter to prepare cigarettes, and the ta...

Embodiment 3

[0033] (1) Prepare materials according to the following components by mass, and mix them to obtain a mixed material:

[0034] 75 parts of cellulose acetate, 25 parts of polypropylene, 1 part of tributyl citrate, 3 parts of sodium bicarbonate foaming agent, 1 part of phosphite additive;

[0035] (2) Adopt a conventional twin-screw extrusion foam molding unit, control the inlet temperature at 165°C, the temperature at the first stage at 170°C, the temperature at the second stage at 190°C, the temperature at the third stage at 195°C, and the temperature at the fourth stage at 200°C, the temperature of the fifth stage is 190°C, and the temperature of the die is 175°C. Add the mixture obtained in step (1), and then add 5 parts by mass of supercritical carbon dioxide in the second stage to extrude into a pentagonal mold. After extrusion, it is foamed at 230° C. for 2 minutes to obtain a filter adsorption rod of cellulose acetate open-cell microporous foam material. Adding the obtai...

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Abstract

The invention relates to a preparing method for a filter tip adsorption bar made of a cellulose acetate open-cell micropore foam material. Cellulose acetate, polypropylene and an auxiliary are mixed by a certain ratio, a certain amount of supercritical carbon dioxide is added, and the mixture is extruded into a mold to be formed with the assistance of supercritical carbon dioxide and foamed to prepare the cellulose acetate open-cell micropore foam material. The obtained filter tip adsorption bar made of the cellulose acetate open-cell micropore foam material is good in smoke retention effect, meets the requirement for reducing harm and tar content of cigarettes and increasing fragrance of the cigarettes, has little influence on fragrance of original cigarettes and can keep characteristics of the original cigarettes. In addition, different adsorption bars can be obtained by using different molds, and filter tips with novel-appearance cross sections are obtained by adding the adsorption bars into the filter tips. The preparing method has the advantages that equipment is convenient to transform, and the filter tip adsorption bar is low in price, practical, efficient and the like.

Description

technical field [0001] The invention relates to a preparation method of a cellulose acetate open-pore microporous foaming material filter tip adsorption rod, which belongs to the technical field of cigarettes. Background technique [0002] In recent years, with the improvement of people's living standards, people's awareness of health has become deeper and deeper, and smokers have higher and higher requirements for the quality of cigarettes, and cigarettes will produce some harmful substances during the combustion process, such as Carbon monoxide, etc., how to design low-harm cigarettes and minimize the impact on cigarette smoking has become a key research direction for cigarette workers. [0003] As a bridge between smokers and mainstream smoke, filters can effectively filter out some harmful components in smoke, so they have been widely valued and applied. In addition, with the development of the times, people have higher and higher requirements on the appearance of cigar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24D3/02
CPCA24D3/02A24D3/0237
Inventor 王晋刘志华王昆淼何沛张涛刘春波缪明明
Owner CHINA TOBACCO YUNNAN IND
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