Core-shell capsule for reducing harmful components of mainstream smoke and preparation and application of core-shell capsule

A technology of harmful components and mainstream smoke, applied in the field of the tobacco industry, can solve the problems of harm reduction or aroma enhancement effect of cigarettes, inability to realize the industrial application of cigarettes, loss of harm reduction effect, etc., and achieve good harm reduction characteristics and controllable size. , particle size controllable effect

Pending Publication Date: 2019-08-23
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most cigarette flavoring and harm-reducing additives are adsorption-type liquid or powder materials. The existing additive technology mainly adds additives to shredded tobacco and filter rods, but when added to shredded tobacco, powder additives are likely to cause dust and sometimes may Participating in the

Method used

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  • Core-shell capsule for reducing harmful components of mainstream smoke and preparation and application of core-shell capsule
  • Core-shell capsule for reducing harmful components of mainstream smoke and preparation and application of core-shell capsule
  • Core-shell capsule for reducing harmful components of mainstream smoke and preparation and application of core-shell capsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Weigh 12g of polyvinyl alcohol and dissolve it in 400mL of deionized water at 80°C to obtain a polyvinyl alcohol solution.

[0074] Weigh 3.6g of polylactic acid particles and dissolve in 30mL of dichloromethane to obtain a polylactic acid solution.

[0075] The polylactic acid solution and deionized water were put into syringes respectively, placed on two syringe pumps, connected to the coaxial double-needle reactor, and the flow rates of the two syringe pumps were 5mL / L (water) and 6mL / L (poly Lactic acid solution) was dropped into the polyvinyl alcohol solution, mechanically stirred for 6 hours at a stirring speed of 250r / min, the product was filtered under reduced pressure, washed with deionized water, and then collected to obtain water-in-polylactic acid capsules. The particle diameter that measures water-packed capsule is 3.5mm (see image 3 -a).

Embodiment 2

[0077] Compared with Example 1, the main difference is that the PLA solubility of the wall material solution is 0.15g / mL; details are as follows:

[0078] Weigh 12g of polyvinyl alcohol and dissolve it in 400mL of deionized water at 80°C to obtain a polyvinyl alcohol solution.

[0079] Weigh 4.5g of polylactic acid particles and dissolve in 30mL of dichloromethane to obtain a polylactic acid solution.

[0080] The polylactic acid solution and deionized water were put into syringes respectively, placed on two syringe pumps, connected to the coaxial double-needle reactor, and the flow rates of the two syringe pumps were 5mL / L (water) and 6mL / L (poly Lactic acid solution) was dropped into the polyvinyl alcohol solution, mechanically stirred for 6 hours at a stirring speed of 250r / min, the product was filtered under reduced pressure, washed with deionized water, and then collected to obtain water-in-polylactic acid capsules. The particle diameter of water-packed capsule is about ...

Embodiment 3

[0082] Compared with Example 1, the main difference is that the PLA solubility of the wall material solution is 0.2g / mL, and the flow ratio of the core material solution / wall material solution is 1:1.6; details are as follows:

[0083] Weigh 12g of polyvinyl alcohol and dissolve it in 400mL of deionized water at 80°C to obtain a polyvinyl alcohol solution.

[0084] Weigh 6g of polylactic acid particles and dissolve in 30mL of dichloromethane to obtain a polylactic acid solution.

[0085] Put the polylactic acid solution and deionized water into syringes respectively, place them on two syringe pumps, connect the coaxial double-needle reactor, and the flow rates of the two syringe pumps are 5mL / h (water flow rate) and 8mL / h respectively. (Flow rate of polylactic acid solution), drop into polyvinyl alcohol solution, mechanically stir for 6h, stirring speed is 250r / min, the product is vacuum filtered, washed with deionized water, and then collected to obtain polylactic acid water-...

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Abstract

The invention discloses a core-shell capsule for reducing harmful components of mainstream smoke. The core-shell capsule comprises a wall material and a core material; the core material is a solutioncontaining a harm reduction additive; and the wall material is polylactic acid. The invention further discloses a preparation method of the core-shell capsule. The preparation method comprises the steps that the solution containing the harm reduction additive is used as a core material solution; an organic solvent dissolved with polylactic acid is used as a wall material solution; the core material solution and the wall material solution are immiscible; the core material solution is added dropwise through an inner hole of an electrospinning coaxial needle (referred to as a coaxial needle in the invention) and the wall material solution is added dropwise through inner and outer hole gaps of a coaxial needle together to a coagulating liquid, solid-liquid separation, washing and drying are performed after stirring, and the core-shell capsule is obtained. The polylactic acid is used as the wall material, is non-toxic and does not cause pollution to the environment, and the polylactic acidhas certain mechanical strength and does not need to be coated twice, so that the production cost is reduced.

Description

technical field [0001] The invention relates to the field of tobacco industry, in particular to a preparation method of a core-shell capsule for reducing harmful components of mainstream smoke. Background technique [0002] The harm of cigarettes to the human body mainly comes from the fact that the total particulate matter and gas phase matter in mainstream smoke contain a large number of harmful compounds when cigarettes are burned, such as carbon monoxide, phenol, hydrocyanic acid, specific N-nitrosamines, and crotonaldehyde in mainstream smoke , benzopyrene, ammonia and other harmful ingredients, long-term smoking and close contact with these harmful compounds will have a negative impact on the human body's breathing, digestion, blood, and nervous system. [0003] In the prior art, some methods that help reduce harmful components in mainstream smoke are disclosed. For example, the Chinese patent document with publication number CN101999750A discloses a method for reducin...

Claims

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Application Information

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IPC IPC(8): A24D3/14
CPCA24D3/14
Inventor 谢国勇袁鼎浩樊娜银董红尹双凤
Owner CHINA TOBACCO HUNAN INDAL CORP
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