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Manufacturing method of two-component superfine non-woven filtering material

A filter material and manufacturing method technology, applied in the direction of non-woven fabrics, textiles and papermaking, etc., can solve the problems of slow filtration rate, large pressure difference, and large filtration resistance, so as to reduce filtration resistance, improve application space, and high filtration efficiency Effect

Inactive Publication Date: 2016-06-15
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Hollow pie-shaped two-component non-woven fabric is composed of superfine fibers, and forms a unique three-dimensional structure, which has high filtration efficiency, but its filtration resistance is also large, especially when used for liquid filtration, because of its pressure difference Larger, resulting in a very slow filtration rate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Manufacturing method of two-component superfine non-woven filtering material
  • Manufacturing method of two-component superfine non-woven filtering material
  • Manufacturing method of two-component superfine non-woven filtering material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: PET and PA6 slices are selected as raw materials, and the mass ratio of PET / PA6 is 70 / 30. Firstly, the raw materials are dried, and then melted in their respective screw extruders (the temperature of each zone is shown in Table 1), and then enter the compound after filtration. Spinning components and extruding from the spinneret hole to obtain hollow segmental bicomponent fibers, hollow segmental segmental bicomponent fibers (cross section such as figure 2 Shown) After the tubular air drafting with a pressure of 0.5Bar~3.5Bar, the square meter weight of 100g / m2 is obtained on the web curtain 2 The fiber web is then subjected to 4 stages of spunlace, and the spunlace pressure is 150 Bar respectively, and after drying, a two-component nonwoven filter material is obtained. The diameters of fibers under different drafting pressures are as follows: image 3 Shown, and the filtration performance of ultrafine nonwovens after spunlace opening is shown in Table 2. ...

Embodiment 2

[0026] Example 2: PET and PA6 slices are selected as raw materials, and the mass ratio of PET / PA6 is 70 / 30. Firstly, the raw materials are dried, and then melted in their respective screw extruders (the temperatures in each zone are shown in Table 1), and enter the composite after filtration. Spinning components and extruding from the spinneret hole to obtain hollow segmental bicomponent fibers, hollow segmental segmental bicomponent fibers (cross section such as figure 2 Shown) After being drawn by a tubular airflow with a pressure of 3.5Bar, the square meter weight of 200g / m is obtained on the web curtain 2 The fiber web is then subjected to 4 stages of spunlace, and the spunlace pressure is 150 Bar respectively, and after drying, a two-component nonwoven filter material is obtained. Table 3 shows the filtration performance of ultrafine nonwovens after spunlace opening.

[0027] Table 3 Filtration performance of different types of two-component materials

[0028]

Embodiment 3

[0029] Example 3: PET and PA6 slices are selected as raw materials, and the mass ratio of PET / PA6 is 50 / 50. First, the raw materials are dried, and then melted in their respective screw extruders (the temperatures in each zone are shown in Table 1), and then enter the composite after filtration. Spinning components and extruding from the spinneret hole to obtain hollow segmental bicomponent fibers, hollow segmental segmental bicomponent fibers (cross section such as figure 2 Shown) After being drawn by a tubular airflow with a pressure of 3.5Bar, the square meter weight of 200g / m is obtained on the web curtain 2 The fiber web is then subjected to 4 stages of spunlace, and the spunlace pressure is 150 Bar respectively, and after drying, a two-component nonwoven filter material is obtained. Table 3 shows the filtration performance of ultrafine nonwovens after spunlace opening.

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Abstract

The invention discloses a manufacturing method of a two-component superfine non-woven filtering material. Any two of polyester (PET), polyamide (PA6) and polyethylene (PE) serve as raw materials for composite spinning, the pressure in the airflow drafting process is controlled, and two types of spun viscose webs which are greatly different in fiber line density are obtained; lapping is conducted on the two types of spun viscose webs, multiple cycles of spunlace splitting and solidification formation are conducted, and the superfine non-woven filtering material is finally formed. According to the two-component superfine non-woven filtering material manufactured through the method, due to the fact that two-component hollow orange-slice fibers are cracked and separated into superfine fibers under the spunlace pressure, a special three-dimensional stereo structure is formed after solidification, different fiber density gradients exist, and the manufacturing method has the advantages of being high in filtering efficiency, small in resistance, large in dust containing capacity and the like.

Description

technical field [0001] The invention relates to the technical field of nonwoven fabric manufacture, in particular to a method for manufacturing a two-component ultrafine nonwoven filter material. technical background [0002] The spun-bonded non-woven process is a technology for the manufacture of non-woven materials by extruding polymer into a web. It uses a polymer melt to melt-spun into a web, and the web is reinforced by mechanical, chemical, and thermal bonding. Made into non-woven fabrics. Spunbonded nonwovens are randomly composed of continuous filaments, which have good physical and mechanical properties, which are incomparable to short-fiber dry-laid nonwovens, so they are widely used as geosynthetics, linoleum, etc. Substrates, medical and sanitary materials, filter materials, crop cover materials and packaging materials, etc. [0003] Drawing is an important step in the fiber production process. It changes the low orientation and low crystallization structure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/492D04H1/4382D04H1/4374
CPCD04H1/4374D04H1/4382D04H1/492
Inventor 于斌韩建朱斐超王敏曹勇民
Owner ZHEJIANG SCI-TECH UNIV
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