Preparation method of melt-blown cloth with three-dimensional array taro bulge structure and melt-blown cloth

A technology of three-dimensional array and melt-blown cloth, which is applied in the direction of non-woven fabrics, heating/cooling fabrics, thorn patterns, etc. The product cannot present the three-dimensional shape and other problems, so as to achieve the effect of enhancing the effect of electret treatment, easy to promote and use, and reasonable structure

Pending Publication Date: 2022-04-12
WUHAN TEXTILE UNIV
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Problems solved by technology

Through the heat shrinkage of the first fiber layer, the second fiber layer forms a large number of protrusions between the connection points, so that the connection points become depressions, forming a three-dimensional micro-convex structure nonwoven fabric, but this method is complicated to operate, and the surface of the nonwoven fabric It is difficult to control the three-dimensional shape
[0006] However, the Chinese patent number is CN109652920A, and the publication date is 2019.4.19. The invention and creation name is a preparation device for a three-dimensional structure melt-blown nonwoven fabric, which uses melt-blown fibers to bond themselves in a high-temperature and high-speed hot air flow to form a non-woven fabric. Features, by changing the apparent structure of the receiving net curtain and preparing a three-dimensional structure melt-blown nonwoven fabric, but the apparent three-dimensional structure of the melt-blown nonwoven fabric prepared by this method is difficult to shape, and the three-dimensional shape cannot be maintained during subsequent processing. When preparing tiny three-dimensional structural units, the meltblown fibers of this method cannot accurately distinguish the microscopic appearance, and the final product cannot present a stable three-dimensional morphology;
[0007] In addition, there are a large number of patents, such as the Chinese patent number CN106858823B, the disclosure date is 2018.04.03, the invention name is a filter layer and a mask, the Chinese patent number is CN110699857 B, the disclosure date is 2021.01.08, the invention creation name is Water-absorbing melt-blown non-woven fabrics and their preparation methods are all prepared by blending melt-spinning with modified nanoparticles to prepare melt-blown fabrics. Due to the doping of nanoparticles, a three-dimensional structure appears in the microscopic appearance, but macroscopically The morphology is still a two-dimensional fiber network structure

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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  • Preparation method of melt-blown cloth with three-dimensional array taro bulge structure and melt-blown cloth

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preparation example Construction

[0033] At the same time, the present application embodiment also provides a method of preparing a melting cloth having a three-dimensional array microcuty structure, which comprises:

[0034] S1, a meltblown fabric having a two-dimensional mesh structure is formed;

[0035] The fiber has no regular dense dispersion arrangement with a meltblown fabric having a two-dimensional mesh structure;

[0036] S2, modify the apparent shape of the meltblown fabric body, forming a meltblown fabric having a three-dimensional arrays.

[0037] In some embodiments of the present application, the meltblown surface of the three-dimensional structure is obtained by the circular two-dimensional structure of the bottom surface of the meltblown body, and the disorderly arrangement in the surface three-dimensional structure is arranged. The fineness is thinner than the fiber in the two-dimensional surface.

[0038] In order to make the present invention more obvious, it is described in detail by the pref...

Embodiment 1

[0040] Polypropylene fibers in which the fiber diameter of 2 μm from the meltblown device is ordered to form a polypropylene fiber meltblown fabric having a two-dimensional mesh structure without a regular dispersion, and is processed in a hot pressing device with the morphology of the martial art. The meltblown fabric having a three-dimensional array of scottic micro-convex structure is obtained. Among them, the bottom surface radius r of the three-dimensional arrays mutant structure unit is 1 mm, the protrusion height H is 1 mm, and the spacing of the sausimus structure unit is 0.6 mm, the array is parallel.

[0041] The experimental test was compared to: a polypropylene fiber melt spray fabric having a three-dimensional array of sagus structures using the present invention increased by approximately 33%, a gas resistance than a polypropylene fiber having a conventional two-dimensional structure The rate is reduced by about 16%, and the particle capture capacity is increased by ...

Embodiment 2

[0043] The polylactic acid fibers that are discharged from the meltblown device having a fiber diameter of 3.5 μm make it unregistered to a surface of a rigid-forming shape having a syndrome of a ruthenium in which it has a three-dimensional array of rolling structures. . Among them, the bottom surface radius r of the three-dimensional arrays structure unit is 0.4 mm, the protrusion height H is 0.8 mm, and the male chronological unit spacing L is 1 mm, the array is a vertical.

[0044] The experimental test is compared: polylactic acid fibers having a three-dimensional arraystructure structure according to the present invention increased by approximately 36% compared to the polylactic acid fibers corresponding to conventional two-dimensional structures, gas The resistance is reduced by about 24%, and the particle capture capacity is increased by about 35%, and the service life is extended to about 37%.

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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Abstract

The invention relates to a preparation method of melt-blown cloth with a three-dimensional array taro-bulge structure and the melt-blown cloth, and provides the melt-blown cloth with the three-dimensional array taro-bulge structure, which is a novel three-dimensional structure with a taro-bulge micro-convex morphology and is fully and regularly arranged on the appearance. Meanwhile, the melt-blown cloth has a macroscopic surface array taro-bulge-shaped and micro-fiber compact network-shaped composite micro-nano structure, so that the specific surface area of the melt-blown cloth is effectively increased, the melt-blown cloth has moisture-proof, hydrophobic and self-cleaning functions, charge storage sites are increased, the capture space for particles such as dust and viruses is enhanced, and the self-cleaning performance of the melt-blown cloth is improved. The functional limitation of the two-dimensional structure of the traditional melt-blown cloth is broken through.

Description

Technical field [0001] The present invention relates to the field of textile technology, in particular a method of preparing a meltblown litter having a three-dimensional arrays atrial structure and a melting cloth. Background technique [0002] Atmospheric pollution causes serious hazards in human health, viruses, dust particles are contaminated by human inhalation or skin contact contamination, and can cause respiratory tract and lung disease, and even harm organs such as cardiovascular systems and liver. Even if the human body has clothing protection, polluting air will damage the human body. The meltblown nonwoven fabric is a messy fiber aggregate that is self-consolidated by ultrafine fibers. It is composed of ultrafine fibers. The specific surface area of ​​the fibers is large, and the adsorption capacity of the particles is strong; the meltblowfiltration material fiber is randomly Distribution, form a large amount of slightly pore, uniform pore distribution, small filter r...

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 Applications(China)
IPC IPC(8): D04H1/56D06C7/02D06C23/04D04H1/4291D04H1/435D04H1/4334
Inventor 徐卫林许多刘欣刘可帅郭维琪杨旺旺苏子毅
Owner WUHAN TEXTILE UNIV
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