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Aramid spunlaced non-woven fabric filter material and manufacturing method thereof

A non-woven fabric and filter material technology, applied in the field of aramid spunlace non-woven fabric filter material and its manufacturing, can solve the problems of low flame retardant performance, low service life, short service life, etc., and achieve tensile strength and High tear strength, good dimensional stability and strength, and the effect of improving filtration efficiency

Active Publication Date: 2011-10-05
杭州路先非织造股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these filter materials have the following disadvantages: 1. Poor high temperature resistance, they cannot be used for a long time under high temperature conditions, and can only be used in low temperature environments, and their service life is short, so it is difficult to meet the requirements of users in terms of service life.
2. The mechanical strength is low, and it is not suitable to use this kind of nonwoven fabric in the occasions requiring high strength. To improve the mechanical strength of the product, it can only be realized by high-performance fibers, especially for fire-fighting clothing, protective clothing, etc.
3. Due to the use of polyester and polypropylene fibers, their flame retardant properties are not high, and they have great limitations in the fields of protective materials and filter materials.
[0003] The most commonly used high-temperature filter material is glass fiber. The short fiber is needle-punched or spun into non-woven fabric and filament woven into fabric, and processed into a bag filter for use. Glass fiber can be used for a long time at a temperature of 260 ° C. , but the folding resistance of glass fiber is poor, in the process of frequent dust cleaning, the strength loss is large and the service life is low
[0004] Now there is a process of using aramid fibers to spunlace nonwovens, but they all use the original manufacturing process of polyester or polypropylene nonwovens. The mechanical strength of the final aramid nonwovens is not enough, easy to deform, and breathable. poor performance

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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  • Aramid spunlaced non-woven fabric filter material and manufacturing method thereof
  • Aramid spunlaced non-woven fabric filter material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The manufacturing method of the present embodiment is as follows:

[0024] (1) Take the aramid fiber 1313 fiber with a length of 45mm and a fineness of 2.54dtex for pre-opening and fine opening, and then carry out anti-static treatment through the oil injection machine, and spray anti-static oil on the oil injection machine to treat the aramid fiber. Static removal followed by mixing, pre-feeding, carding, laying and drawing;

[0025] (2) The above-mentioned aramid fiber 1313 fiber enters the spunlace equipment for spunlace reinforcement so that the fibers are entangled with each other to form a cloth. During spunlace, five spunlace operations are used. The diameter of the water needle in the first spunlace is 0.13 mm, the spunlace pressure is 100bar; the diameter of the water needle in the second spunlace is 0.1mm, and the spunlace pressure is 50bar; the diameter of the water needle in the third spunlace is 0.13mm, and the spunlace pressure is 100bar; The diameter of ...

Embodiment 2

[0031] The manufacturing method of the present embodiment is as follows:

[0032] (1) Get the aramid fiber 1313 fiber that length is 22mm, fineness is 1dtex and the length is 51mm, fineness is the aramid fiber 1313 fiber of 2.2dtex, two kinds of fiber weight ratios are 2: 8, carry out pre-opening, fine opening Loosen, then destaticize the aramid fiber by spraying the destaticizing oil on the fuel injector, and then carry out mixing, pre-feeding, carding, web laying and drafting treatment;

[0033] (2) The above-mentioned aramid fiber 1313 fiber enters the spunlace equipment for spunlace reinforcement so that the fibers are entangled with each other to form a cloth. During spunlace, five spunlace operations are used. The diameter of the water needle in the first spunlace is 0.13 mm, the spunlace pressure is 110bar; the diameter of the water needle in the second spunlace is 0.1mm, and the spunlace pressure is 60bar; the diameter of the water needle in the third spunlace is 0.13m...

Embodiment 3

[0039] The manufacturing method of the present embodiment is as follows:

[0040] (1) get the aramid fiber 1313 fiber that length is 30mm, fineness is 1.5dtex and the length is 46mm, fineness is the aramid fiber 1313 fiber of 2.2dtex, two kinds of fiber weight ratios are 4: 6, carry out pre-opening, finishing Opening, and then destaticize the aramid fiber by spraying the destaticizing oil on the fuel injector, and then carry out mixing, pre-feeding, carding, web laying and drafting treatment;

[0041] (2) The above-mentioned aramid fiber 1313 fiber enters the spunlace equipment for spunlace reinforcement so that the fibers are entangled with each other to form a cloth. During spunlace, five spunlace operations are used. The diameter of the water needle in the first spunlace is 0.13 mm, the spunlace pressure is 105bar; the diameter of the water needle in the second spunlace is 0.1mm, and the spunlace pressure is 60bar; the diameter of the water needle in the third spunlace is 0...

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Abstract

The invention discloses an aramid spunlaced non-woven fabric filter material and a manufacturing method thereof. In the manufacturing method of spunlace, aramid fiber is taken as a raw material, after fine opening is carried out on the aramid fiber, static-removing treatment is carried out on the aramid fiber by an oil spray system, multiple paths of spunlace are adopted to carry out spunlace strengthening on the aramid fiber, and the pressure values of the spunlace are spaced, thus the obtained filter material has larger mechanical tensile strength and tear strength, can maintain good size stability and strength at a high temperature of 200 DEG C, can meets higher temperature, high efficiency and other relatively high filter requirements simultaneously, and has good permeability.

Description

technical field [0001] The invention relates to a spunlace nonwoven fabric, in particular to an aramid spunlace nonwoven fabric filter material and a manufacturing method thereof. Background technique [0002] At present, most of the domestic non-woven fabric filter materials use fiber materials such as polyester and polypropylene fiber. For example, the applicant's invention name is "spunlace non-woven fabric filter material and its manufacturing method", and the application number is CN200410053952.6 Invention patent, Disclosed is a method for preparing a spunlace polyester filter material. The spunlace nonwoven fabric filter material is prepared by using polyester fiber as a raw material, combing into a web, acupuncture reinforcement, gluing and drying, and the like. The spunlace nonwoven fabric filter material has the advantages of good dimensional stability, not easily deformed, good porosity and air permeability. However, most of these filter materials have the follow...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/04D06B1/02D04H1/46D04H1/42B01D39/08D04H1/4342
Inventor 张芸施淑波刘北壬王悦红
Owner 杭州路先非织造股份有限公司