A kind of polylactic acid fiber tobacco tow and preparation method thereof

A polylactic acid fiber, polylactic acid technology, applied in the application, tobacco, smoke oil filter and other directions, can solve the problems of cigarette sensory quality, difficult to eliminate pollution, non-biodegradable and other problems, and achieve good recyclability and biodegradation. improve the effect of reducing coke and damage, and reducing the effect of interlayer peeling

Active Publication Date: 2021-09-03
环保知识产权控股有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cellulose diacetate has excellent filtration and adsorption properties, and its market share is about 90%, but its raw material is perennial high-quality wood that is not easy to regenerate, and its biodegradation rate is slow, and the pollution caused to the environment is not easy to eliminate; polypropylene It is another cigarette filter material currently used in cigarettes, accounting for less than 10% of the filter material market in my country. It uses petroleum as raw material and consumes non-renewable resources. Its composition is long-chain hydrocarbons, which cannot Biodegradable, without polar groups, poor affinity for strong polar substances, smooth fiber surface, poor smoke filtering effect, and greater impact on the sensory quality of cigarettes

Method used

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  • A kind of polylactic acid fiber tobacco tow and preparation method thereof

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Effect test

Embodiment 1

[0047] A polylactic acid fiber tow for tobacco, the tow for tobacco is composed of a single fiber with a core-wrapped structure, and the core-wrapped structure has a three-layer structure of outer layer-inner layer-core layer in sequence, wherein , the outer layer is polylactic acid resin added with pore-forming agent and tourmaline superfine powder, the addition of pore-forming agent in the outer layer is 13wt%, the addition of tourmaline superfine powder is 7wt%, and the inner layer is Polypropylene resin added with pore-forming agent, metal oxide ultrafine powder, compatibilizer and crystallization nucleating agent, the metal oxide is MgO, the pore-forming agent is NaCl, the pore-forming agent, metal oxide in the inner layer The addition amount of superfine powder, polyethylene glycol and crystallization nucleating agent is respectively 8wt%, 10wt%, 2wt%, 2wt%. The particle size of the micropowder and crystal nucleating agent is 0.1-5 μm, the core layer is polylactic acid, ...

Embodiment 2

[0049] A polylactic acid fiber tow for tobacco, the tow for tobacco is composed of a single fiber with a core-wrapped structure, and the core-wrapped structure has a three-layer structure of outer layer-inner layer-core layer in sequence, wherein , the outer layer is polylactic acid resin added with pore-forming agent and tourmaline superfine powder, the addition of pore-forming agent in the outer layer is 10wt%, the addition of tourmaline superfine powder is 10wt%, and the inner layer is Polypropylene resin added with pore forming agent, metal oxide ultrafine powder, compatibilizer and crystallization nucleating agent, the metal oxide is TiO 2 , the pore-forming agent is K 2 SO 4 , the addition of pore forming agent, metal oxide superfine powder, polyethylene glycol and crystallization nucleating agent in the inner layer is respectively 12wt%, 4wt%, 5wt%, 6wt%, and described crystallization nucleating agent is talcum powder, so The particle size of the pore-forming agent, m...

Embodiment 3

[0051] A kind of preparation method of polylactic acid fiber tobacco tow described in embodiment 1, comprises the following steps:

[0052] S1. Vacuum-dry each spinning raw material at a drying temperature of 80-120°C and a drying time of 4-10 hours, so that the water content is not higher than 200ppm;

[0053] S2. Prepare the spinning raw materials according to the ratio, melt and blend them in the internal mixer or twin-screw, prepare the outer layer, inner layer and core layer spinning molten raw materials respectively, after filtering, quantitatively input the composite spinning assembly by the metering pump, The spinning melt flows separately in the isolated cavities of the composite spinning assembly, and is extruded from the same circular spinneret hole. The number of spinneret holes is 8000-12000, and it is air-cooled and solidified at 15-25°C;

[0054] S3. Draw in a water bath at a temperature of 50-70°C, the draw ratio is 2-3, the draw speed is less than 300m / min, th...

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Abstract

The invention provides a polylactic acid fiber tow for cigarettes and a preparation method thereof. The tow for cigarettes is composed of a single fiber with a core-wrapped structure, and the core-wrapped structure has an outer layer-inner layer-core The three-layer structure of the layer, wherein, the outer layer and the core layer are polylactic acid, the inner layer is polypropylene, and holes are distributed on the outer layer and the inner layer, and the outer layer, the inner layer and the inner layer of the single fiber are The mass ratio of the core layer is (20‑45): (20‑30): 10, and is extruded through the composite spinning assembly. The linear density of the tobacco tow is 3‑5ktex, and the linear density of the monofilament is 2‑6detx , the number of crimps is 15-30 pieces / 25mm, it has good stiffness and filtration performance while maintaining low suction resistance and rod weight, and has good biodegradability.

Description

technical field [0001] The invention relates to the technical field of tobacco materials, in particular to a polylactic acid fiber tow for tobacco and a preparation method thereof. Background technique [0002] Cigarette filter is an important part of cigarettes. It is used to reduce the smoke, tar and suspended particles produced during smoking. It can reduce the harm of harmful substances in the smoke to the human body and improve the quality of smoke. With the society With the growing concern about smoking and health issues and the increasing requirements for reducing tar and harm of cigarettes, filters have long been a research hotspot in the tobacco industry. [0003] Current cigarette filter materials are mainly cellulose diacetate and polypropylene. Cellulose diacetate has excellent filtration and adsorption properties, and its market share is about 90%, but its raw material is perennial high-quality wood that is not easy to regenerate, and its biodegradation rate is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/10
CPCA24D3/10
Inventor 王辉
Owner 环保知识产权控股有限责任公司
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