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Melt-blowing filter medium with nano/micron fiber interlocked structure and preparation method for melt-blowing filter medium

A filter medium and micron fiber technology, applied in fiber processing, filament/thread forming, conjugated synthetic polymer artificial filament, etc., can solve the problem of reduced filter service life, limited dirt holding capacity, easy to clog filter materials, etc. problems, to achieve the effect of increasing porosity, good filtering effect, and improving filtering accuracy

Active Publication Date: 2020-09-01
HANGZHOU COBETTER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the production efficiency of this invention is improved compared to nanofibers produced by electrospinning, it is still far below the efficiency of non-woven fabrics produced by melt blowing
[0005] Japanese patent JP2016053241A discloses a non-woven fabric composed of ultra-fine fibers, the fiber diameter of which can reach less than 1 μm, and the distribution index is less than 1.3. Although the non-woven fabric of this structure has nano-level filtration accuracy, its ability to hold dirt is limited , the trapped particles are easy to block the filter material and reduce the service life of the filter

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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  • Melt-blowing filter medium with nano/micron fiber interlocked structure and preparation method for melt-blowing filter medium
  • Melt-blowing filter medium with nano/micron fiber interlocked structure and preparation method for melt-blowing filter medium
  • Melt-blowing filter medium with nano/micron fiber interlocked structure and preparation method for melt-blowing filter medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] like Picture 1-1 , Figure 1-2 and figure 2 As shown, a melt-blown non-woven fabric with a nano / micro-scale fiber interlocking structure, including a nanofiber set and a micron fiber set, the nanofiber set and the micron fiber set are formed by meltblowing a mixture, and the mixture is formed by at least two melted Index of the same or different polymer composition.

[0079] The sets of nanofibers and microfibers are meltblown from a mixture of polymers comprising at least two of said polymers having a melt index, in this example the thermoplastic polymer polypropylene, which Contains polypropylene with high melt index and polypropylene with low melt index, wherein the melt index of high melt index polypropylene is 1800g / 10min, the content is 90wt%; the melt index of low melt index polypropylene is 28g / 10min, the content It is 5wt%; the mass ratio of high melt index polypropylene and low melt index polypropylene is 18:1.

[0080] The polymer is doped with a degradi...

Embodiment 2

[0123] like Figure 3-1 , Figure 3-2 and Figure 4 As shown, a melt-blown non-woven fabric with a nano / micro-scale fiber interlocking structure, including a nanofiber set and a micron fiber set, the nanofiber set and the micron fiber set are formed by melt blown from a mixture of at least two melted Index of the same or different polymer compositions.

[0124] The sets of nanofibers and microfibers are meltblown from a mixture of polymers comprising at least two of said polymers having a melt index, in this example the thermoplastic polymer polypropylene, which Contains polypropylene with high melt index and polypropylene with low melt index, wherein the melt index of high melt index polypropylene is 1800g / 10min, the content is 90wt%; the melt index of low melt index polypropylene is 28g / 10min, the content It is 10wt%; the mass ratio of high melt index polypropylene and low melt index polypropylene is 9:1.

[0125] The mass proportion of the nanofiber set is 55%, and the ma...

Embodiment 3

[0158] like Figure 5-1 , Figure 5-2 and Image 6 As shown, a melt-blown non-woven fabric with a nano / micro-scale fiber interlocking structure, including a nanofiber set and a micron fiber set, the nanofiber set and the micron fiber set are formed by melt blown from a mixture of at least two melted Index of the same or different polymer composition.

[0159] The sets of nanofibers and microfibers are meltblown from a mixture of polymers comprising at least two of said polymers having a melt index, in this example the thermoplastic polymer polypropylene, which Contains polypropylene with high melt index and polypropylene with low melt index, wherein the melt index of high melt index polypropylene is 1500g / 10min, the content is 85wt%; the melt index of low melt index polypropylene is 28g / 10min, the content It is 15wt%; the mass ratio of high melt index polypropylene and low melt index polypropylene is 13:3.

[0160] The mass proportion of the nanofiber set is 45%, and the m...

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Abstract

The invention discloses a melt-blowing filter medium with a nano / micron fiber interlocked structure. The melt-blowing filter medium with the nano / micron fiber interlocked structure comprises at leasta nano fiber set and a micro fiber set. The fiber diameter of the nano fiber sets is smaller than 1 micrometer, the nano fiber set comprises multiple nano fiber combinations with the diameters changing in a gradient mode, and fibers in each nano fiber combination are interwoven or fibers in all the nano fiber combinations are interwoven. The fiber diameter of the micron fiber set is greater than 1micrometer, the micron fiber set comprises a plurality of micron fiber combinations with the diameters changing in a gradient mode, and fibers in each micron fiber combination are interwoven or fibers in all the micron fiber combinations are interwoven. The nano fiber set and the micro fiber set are formed by melt-blowing a mixture consisting of at least two polymers of the same or different meltindices. The invention further discloses a preparation method for the melt-blowing filter medium. The preparation method comprises the following steps: 1) raw material mixing, 2) melt spinning, and 3) receiving and molding. Through the combination of the nano fiber set and the micron fiber set, a favorable filtering effect is achieved, the contaminant carrying capacity is improved, the filter pressure resistance is reduced, and the filtering effect is excellent.

Description

technical field [0001] The invention belongs to the technical field of nonwovens in the separation and filtration industry, in particular to the field of melt-blown filter media, in particular to a melt-blown filter medium with a nano / micron fiber interlocking structure and a preparation method thereof. Background technique [0002] Nonwoven materials have become an increasingly important filter material due to their excellent filtration performance, high output, and simple processing technology. Meltblown method is one of the important methods for one-step forming of nonwovens. Because of its advantages such as adjustable fiber fineness, messy and fluffy three-dimensional structure, good filtration efficiency and high production efficiency, it is widely used in food chemical industry, medical and health care, environmental protection and microelectronics industry. and other fields play a very important role. [0003] In recent years, with the rapid development of the semic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/541D04H3/147D01D5/088D01D5/30D01F8/06D01F8/12D01F8/14D01F8/16
CPCD04H1/541D04H3/147D01D5/30D01D5/088D01F8/06D01F8/14D01F8/16D01F8/12D10B2505/04
Inventor 贾建东徐建明郑海明
Owner HANGZHOU COBETTER TECH CO LTD
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