A kind of electret ultrafine fiber cigarette filter material and preparation method thereof

A superfine fiber and electret technology, applied in the direction of e-liquid filter, fiber chemical characteristics, tobacco, etc., can solve the problem of low filtration efficiency of cigarette filter materials, and achieve high electrostatic adsorption performance, fiber strength improvement, and high filtration effect. Effect

Active Publication Date: 2020-01-21
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low filtration efficiency of cigarette filter materials in the prior art, the present invention provides an electret ultrafine fiber cigarette filter material and its preparation method and preparation device

Method used

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  • A kind of electret ultrafine fiber cigarette filter material and preparation method thereof
  • A kind of electret ultrafine fiber cigarette filter material and preparation method thereof

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Effect test

preparation example Construction

[0027] A preparation method of an electret superfine fiber cigarette filter material, specifically comprising the following steps:

[0028] Step S1, uniformly mixing 94-99 parts by weight of thermoplastic material and 1-6 parts by weight of electret masterbatch to obtain a mixture;

[0029] Step S2, the melt-blown device 1 prepares melt-blown ultrafine fibers 6 using the mixture;

[0030] Step S3, the cooling and bundling device cools and bundles the melt-blown ultrafine fibers 6 ejected from the melt-blown device 1;

[0031] Step S4, the collection device 5 processes and collects the melt-blown ultrafine fibers 6 to obtain electret ultrafine fiber cigarette filter materials.

[0032] In the first embodiment of the cooling and clustering device, the cooling and clustering device in the step S3 includes a cold air box 2 and a screen receiving device 3; the step S3 is specifically: the cold air box 3 cools the melt-blown ultrafine fiber 6, The cooled melt-blown ultrafine fiber...

Embodiment 1

[0051] A preparation method of an electret superfine fiber cigarette filter material, comprising the following steps:

[0052] Step S1, taking 96 parts by weight of polypropylene pellets and 4 parts by weight of electret masterbatch and mixing them uniformly to obtain a mixture;

[0053] Step S2, set the temperature of the four areas of the electret ultrafine fiber cigarette filter material preparation device at 260°C, 260°C, 270°C, and 270°C respectively, and feed the mixture obtained in step S1 into the silo of the screw extruder , forming a melt through a screw melt extruder;

[0054] Step S3, the melt is sprayed out through the spinneret after the metering pump, and drawn under 220°C and 0.4MPa hot air to obtain melt-blown ultra-fine fibers. After the melt-blown ultra-fine fibers are cooled, they are bundled with a curtain collection device or a clustering device ;

[0055] Step S4, performing electret treatment on the melt-blown ultrafine fibers obtained in step S3 by m...

Embodiment 2

[0059] Step S1, taking 95 parts by weight of polypropylene pellets and 5 parts by weight of electret masterbatch and mixing evenly to obtain a mixture;

[0060] Step S2, set the temperature of the four areas of the electret ultrafine fiber cigarette filter material preparation device at 260°C, 260°C, 270°C, and 270°C respectively, and feed the mixture obtained in step S1 into the silo of the screw extruder , forming a melt through a screw melt extruder;

[0061] Step S3, the melt is sprayed out through the spinneret after the metering pump, and drawn under 220°C and 0.4MPa hot air to obtain melt-blown ultra-fine fibers. After the melt-blown ultra-fine fibers are cooled, they are bundled with a curtain collection device or a clustering device ;

[0062] Step S4, performing electret treatment on the ultrafine fibers obtained in step S3 by means of high-voltage corona discharge, the electret voltage is 20kV, the electret interval is 20mm, and the electret time is 10s;

[0063] ...

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Abstract

The invention relates to an ultrafine electret fiber cigarette filter material and a preparation method thereof. The ultrafine electret fiber cigarette filter material is melt-blown ultrafine fibers with diameter being 1-5 mu m; the ultrafine fibers are prepared from 94-99 parts by weight of a thermoplastic material and 1-6 parts by weight of electret masterbatch; the melt-blown ultrafine fibers are treated with electret; the thermoplastic material is any one of PP, PET, PA, PLA or PE. The conventional melt-blown method is improved, traditional one-time cloth forming is changed into preparation of an ultrafine fiber bundle with diameter being 1-5 mu m, and the fiber fineness is uniform; the ultrafine electret fiber cigarette filter material can solve the problem of environmental pollution in production of acetate fibers. The ultrafine fibers are treated with electret, and the treated fibers have lasting static electricity, the charge retention time can reach 2 years or longer, and minute dirt particles can be trapped with the electrostatic effect; the material has the advantages of high filtration efficiency and low filtration resistance.

Description

technical field [0001] The invention relates to the field of cigarette filter material and non-woven field, in particular to an electret superfine fiber cigarette filter material and a preparation method thereof. Background technique [0002] Cigarette smoke contains particles, commonly known as tar. Tar contains a large number of chemical components, 4000 to 5000 kinds, all of which are products of incomplete combustion of tobacco. Cigarette filters are used to filter tar and other harmful substances in tobacco. Now the commonly used cigarette filter material is cellulose acetate cigarette filter, and cellulose acetate is made by wet spinning, the production process is long, and the solvent used in the spinning process is harmful to the environment and pollutes the three wastes. In addition, the effect of cellulose acetate fiber in filtering harmful carcinogens (such as polycyclic aromatic hydrocarbons and aldehydes) in mainstream cigarette smoke is not very satisfactory,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/02D01F6/46D01F6/92D01F1/10
CPCA24D3/0229D01F1/10D01F6/46D01F6/92
Inventor 邹汉涛王冰张荣波左丹英易长海周阳韦炜
Owner WUHAN TEXTILE UNIV
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