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Preparation method of filter material

A filter material and adsorption material technology, applied in the fiber field, can solve the problems of easy collapse and deformation, bad smell of cigarette filters, etc., and achieve the effect of low cost, excellent comprehensive performance and improved filtration efficiency

Inactive Publication Date: 2020-04-14
深圳市宏翔新材料发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional paper filters are usually made of special paper made of pure wood pulp fibers. The cigarette filters made have disadvantages such as bad smell and easy collapse and deformation during the smoking process. Although the paper filter material that replaces the traditional pure wood pulp paper can overcome the above defects to a certain extent, its filtration efficiency still needs to be further improved.

Method used

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  • Preparation method of filter material
  • Preparation method of filter material
  • Preparation method of filter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A preparation method of filter material, the steps are as follows:

[0054] (1) Fiber web forming: the hot-melt fiber and short fiber are air-laid to form a fiber web, and roll-formed;

[0055] The hot-melt fiber is a composite fiber whose skin layer is PE and the core layer is PP; the short fiber is made by cutting the self-twisting fiber, the length of the short fiber is 40mm, and the single filament fineness is 1.6dtex; the quality of the hot-melt fiber and short fiber The ratio is 20:80;

[0056] The preparation process of the self-twisting fiber is as follows: according to the FDY process, after distributing high-viscosity PP melt (melt index: 10g / min) and low-viscosity PP melt (melt index: 35g / min) with a mass ratio of 40:60, After the FDY filaments are extruded from the spinneret holes on the same spinneret, relaxation heat treatment is carried out to obtain self-twisted fibers;

[0057] Such as Figure 8 As shown, the spinneret hole on the spinneret plate is ...

Embodiment 2

[0070] A preparation method of filter material, the steps are as follows:

[0071] (1) Fiber web forming: the hot-melt fiber and short fiber are air-laid to form a fiber web, and roll-formed;

[0072] The hot-melt fiber is a composite fiber whose skin layer is PE and the core layer is PP; the short fiber is made by cutting the self-twisting fiber, the length of the short fiber is 49mm, and the single filament fineness is 2.6dtex; the quality of the hot-melt fiber and short fiber The ratio is 21:79;

[0073] The preparation process of the self-twisting fiber is: according to the FDY process, after distributing the high-viscosity PP melt (melt index of 13g / min) and low-viscosity PP melt (melt index of 40g / min) with a mass ratio of 40:60, After the FDY filaments are extruded from the spinneret holes on the same spinneret, relaxation heat treatment is carried out to obtain self-twisted fibers;

[0074] The spinneret hole is shaped spinneret hole, The shape is composed of a h...

Embodiment 3

[0087] A preparation method of filter material, the steps are as follows:

[0088] (1) Fiber web forming: the hot-melt fiber and short fiber are air-laid to form a fiber web, and roll-formed;

[0089] The hot-melt fiber is a composite fiber whose skin layer is PE and the core layer is PP; the short fiber is made by cutting the self-twisted fiber, the length of the short fiber is 48mm, and the single-filament fineness is 2.7dtex; the quality of the hot-melt fiber and short fiber The ratio is 25:75;

[0090]The preparation process of the self-twisting fiber is as follows: according to the FDY process, after distributing high-viscosity PP melt (melt index: 10g / min) and low-viscosity PP melt (melt index: 48g / min) with a mass ratio of 45:55, After the FDY filaments are extruded from the spinneret holes on the same spinneret, relaxation heat treatment is carried out to obtain self-twisted fibers;

[0091] The spinneret hole is shaped spinneret hole, The shape is composed of a ...

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Abstract

The invention relates to a preparation method of a filter material. The filter material is prepared from hot melt fibers and short fibers through fiber web forming, adsorption material coating, dryingand curing and paper making and forming; the hot melt fibers are composite fibers of which the skin layers are PE and the core layers are PP; the short fibers are prepared from self-twisted fibers through cutting treatment, and the length of the short fibers is 40-50 mm; the preparation process of the self-twisted fiber comprises the following steps: distributing high / low-viscosity PP melt according to an FDY (Fully Drawn Yarn) process, extruding from spinneret orifices in the same spinneret plate to obtain FDY, and carrying out relaxation heat treatment to obtain the self-twisted fiber, wherein the spinneret orifices are in a shaped described in the description and the shape is composed of a transverse line, a vertical line I and a vertical line II which are vertically connected with thetransverse line; and the distribution means that the high-viscosity PP melt is controlled to flow through the transverse line, and meanwhile, the low-viscosity PP melt is controlled to flow through the vertical line I and the vertical line II. According to the invention, a fiber with a twisted structure is prepared by adopting a simple preparation method, so that the filter material with relatively high filtering efficiency is prepared.

Description

technical field [0001] The invention belongs to the field of fiber technology and relates to a preparation method of a filter material. Background technique [0002] Cigarette filter is an integral part of cigarettes, and the filter material has a significant impact on the smoking quality and tar retention efficiency of cigarettes. Paper filter, as an effective coke reducing material, has received more and more attention from the tobacco industry. Traditional paper filters are usually made of special paper made of pure wood pulp fibers. The cigarette filters made have disadvantages such as bad smell and easy collapse and deformation during the smoking process. Although the paper filter material that replaces the traditional pure wood pulp paper can overcome the above defects to a certain extent, its filtration efficiency still needs to be further improved. [0003] Therefore, it is urgent to study a paper filter material with high filtration efficiency. Contents of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24D3/02D04H1/541D01D5/253D01D5/22B01D39/14
CPCA24D3/02A24D3/0204B01D39/14B01D2239/0407B01D2239/10D01D5/22D01D5/253D04H1/541
Inventor 林育如
Owner 深圳市宏翔新材料发展有限公司