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Elastic fiber melt-blown nonwoven fabric and preparation method thereof

A technology of melt-blown non-woven fabrics and elastic fibers, applied in the directions of non-woven fabrics, textiles and papermaking, etc. problem, to achieve the effect of excellent anti-adhesion ability, improved mechanical properties, high strength

Active Publication Date: 2020-02-14
DONGGUAN YIMAO FILTER MEDIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polarity, surface tension, and crystallization ability of the materials used in the fiber core and sheath of the nonwoven fabric are quite different, resulting in insufficient compatibility and low bonding force at the skin-core interface, so the overall tensile strength is insufficient. ; and the surface of the non-woven fabric is relatively viscous, and it is easy to adhere to clothing or skin during actual use, causing inconvenience in use

Method used

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  • Elastic fiber melt-blown nonwoven fabric and preparation method thereof
  • Elastic fiber melt-blown nonwoven fabric and preparation method thereof
  • Elastic fiber melt-blown nonwoven fabric and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0034] The present invention also provides a kind of preparation method of elastic fiber melt-blown nonwoven fabric, comprises the steps:

[0035] S1. Mix polypropylene-based elastomer slices, ultra-high molecular weight polyethylene slices, and nano-silicon carbide and dry them until the moisture content is below 150ppm. Melt and blend them through a twin-screw extruder at a melting temperature of 200-230°C to form a skin layer material melt;

[0036] S2. Mix thermoplastic polyurethane elastomer slices and compatibilizers and dry until the moisture content is below 150ppm, melt and blend through a twin-screw extruder at a melting temperature of 180-240°C to form a core layer material melt;

[0037] S3. The melt of the skin layer material and the melt of the core layer material are respectively extruded by their corresponding twin-screw extruders, and after metering, they are sprayed out through the nozzle of the eccentric sheath-core spinning assembly, and the spinning assemb...

Embodiment 1

[0041] The present embodiment provides a kind of preparation method of elastic fiber melt-blown non-woven fabric, comprises the following steps:

[0042] S1. Mix polypropylene elastomer slices, ultra-high molecular weight polyethylene slices, and nano-silicon carbide at a mass ratio of 91:6:3, and dry at 80°C for 4 hours to keep the moisture content below 150ppm, and extrude through twin-screw The machine melts and blends at 220° C. to form a skin layer material melt; the particle size of the nano-silicon carbide is 100 nm.

[0043]S2. Using maleic anhydride grafted polypropylene with a grafting rate of 1% as a compatibilizer, the ether-ester copolymer thermoplastic polyurethane elastomer slices and the compatibilizer are mixed according to a mass ratio of 92:8, and heated at 80°C Dry at low temperature for 4 hours to keep the moisture content below 150ppm, and melt blend at 200° C. through a twin-screw extruder to form a core layer material melt.

[0044] S3. The melt of the...

Embodiment 2～9 and comparative example 1～4

[0053] Examples 2 to 9 and Comparative Examples 1 to 4 respectively provide a method for preparing elastic fiber melt-blown non-woven fabrics. Compared with Example 1, the difference is that the content of each raw material in the composite fiber is changed, and each implementation The percentages of the mass of each raw material in the total mass of composite fibers in Examples and Comparative Examples are shown in Table 2.

[0054] Table 2 The percentage of each raw material mass in the total mass of the composite fiber in Examples 2 to 9 and Comparative Examples 1 to 4

[0055]

[0056]

[0057] The tensile strength, elongation at break and peel strength of the elastic fiber melt-blown nonwoven fabrics prepared in Examples 2-9 and Comparative Examples 1-4 were tested, and the results are shown in Table 3.

[0058] Table 3 The performance parameters of the elastic fiber melt-blown non-woven fabrics prepared in Examples 2-9 and Comparative Examples 1-4

[0059]

[0...

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Abstract

The invention discloses an elastic fiber melt-blown nonwoven fabric and a preparation method thereof. The elastic fiber melt-blown nonwoven fabric comprises composite fibers with an eccentric skin-core structure, the skin layer of the composite fibers comprises polypropylene elastomer, ultra-high molecular weight polyethylene and nano silicon carbide, and the core layer of the composite fibers comprises thermoplastic polyurethane elastomer and a compatibilizer. The elastic fiber melt-blown nonwoven fabric is prepared by adopting a melt-blown spinning method, including: respectively drying andmelting a skin layer material and a core layer material, spraying through a nozzle of an eccentric skin-core spinning component, laying and reinforcing. The elastic fiber melt-blown nonwoven fabric provided by the invention according to the above mode can gain good elasticity, high strength and low surface viscosity and is reasonable in structure, the preparation process is simple, the requirementfor practical application can be met, and the fabric is suitable for large-scale production and is widely applicable.

Description

technical field [0001] The invention relates to the technical field of elastic fiber non-woven fabrics, in particular to an elastic fiber melt-blown non-woven fabric and a preparation method thereof. Background technique [0002] Elastic fiber melt-blown non-woven fabric is a kind of ultra-fine fiber non-woven fabric prepared by melt-blown process with elastomer as raw material. Compared with conventional melt-blown non-woven fabric, it has better elasticity, stretchability and ease of use. Flexibility, and its preparation process is short, high output, low cost, so it is widely used in clothing, daily necessities, medical and health and other fields. However, due to the limitation of raw materials, traditional elastic fiber melt-blown non-woven fabrics made of a single elastomer usually have problems such as single function and poor mechanical properties, which have gradually been difficult to meet people's requirements. Therefore, it is necessary to compound elastomers to...

Claims

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Application Information

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IPC IPC(8): D04H1/541D04H3/147
CPCD04H1/541D04H3/147
Inventor 吴龙涛陈利军王亚飞宋宝祥刘双全
Owner DONGGUAN YIMAO FILTER MEDIA
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