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A kind of high-performance protective barrier melt-blown non-woven fabric and preparation method thereof

A high-performance technology of melt-blown non-woven fabrics, which is applied in the direction of non-woven fabrics, textiles, papermaking, and braided fabrics. Good performance and low production cost

Active Publication Date: 2021-08-06
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a high-performance protective barrier melt-blown non-woven fabric and a preparation method thereof. Specifically, in the preparation process of the melt-blown non-woven fabric, a grid base cloth is used as a reinforced support structure to form a reinforced support structure and a filter The non-woven fabric structure of the barrier layer; the materials of the grid base cloth and the melt-blown ultrafine fiber are selected from high-temperature-resistant, high-strength fiber raw materials; the purpose is to solve the problem of the melt-blown non-woven fabric in the prior art During the process, the dimensional stability is poor, and in the process of high temperature or radiation sterilization, it is easy to deform and cause the problem of reduced filtration efficiency.

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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  • A kind of high-performance protective barrier melt-blown non-woven fabric and preparation method thereof

Examples

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Effect test

Embodiment 1

[0049] A method for preparing a high-performance protective barrier melt-blown non-woven fabric, the steps of which are: semi-dull PBT with a melting point of 230°C, a heat distortion temperature of 175°C, a long-term use temperature of 140°C, and a melt index of 65g / 10min Resin, vacuum-dried until the water content of the resin is 25ppm, melted and extruded by a screw, accurately metered by a metering pump, sprayed on a spinneret, stretched and solidified by high-temperature airflow, and the grid base cloth is laid under the spinneret The fine flow of melt-blown fibers is received on the forming roller for composite molding, and then the melt-blown non-woven fabric is made by heat setting and rolling.

[0050] Among them, the vacuum degree of vacuum drying is 150Pa, the temperature is 120°C, and the time is 8h; the screw melt extrusion process includes a heating section (temperature is 200°C), a melting section (temperature is 240°C), a compression section (temperature is 280°...

Embodiment 2

[0078]A method for preparing a high-performance protective barrier melt-blown non-woven fabric, the steps of which are: semi-dull PET with a melting point of 260°C, a heat distortion temperature of 190°C, a long-term use temperature of 150°C, and a melt index of 80g / 10min Resin, vacuum-dried until the water content of the resin is 25ppm, melted and extruded by a screw, accurately metered by a metering pump, sprayed on a spinneret, stretched and solidified by high-temperature airflow, and the grid base cloth is laid under the spinneret The fine flow of melt-blown fibers is received on the forming roller for composite molding, and then the melt-blown non-woven fabric is made by heat setting and rolling.

[0079] Among them, the vacuum degree of vacuum drying is 150Pa, the temperature is 130°C, and the time is 12h; the screw melt extrusion process includes a heating section (temperature is 220°C), a melting section (temperature is 260°C), a compression section (temperature is 290°...

Embodiment 3

[0090] A method for preparing a high-performance protective barrier melt-blown non-woven fabric, the steps of which are: semi-dull PA66 with a melting point of 245°C, a heat distortion temperature of 170°C, a long-term use temperature of 145°C, and a melt index of 135g / 10min Resin, vacuum-dried until the water content of the resin is 25ppm, melted and extruded by a screw, accurately metered by a metering pump, sprayed on a spinneret, stretched and solidified by high-temperature airflow, and the grid base cloth is laid under the spinneret The fine flow of melt-blown fibers is received on the forming roller for composite molding, and then the melt-blown non-woven fabric is made by heat setting and rolling.

[0091] Among them, the vacuum degree of vacuum drying is 150Pa, the temperature is 125°C, and the time is 12h; the screw melt extrusion process includes a heating section (temperature is 220°C), a melting section (temperature is 260°C), a compression section (temperature is 2...

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Abstract

The invention relates to a high-performance protective barrier melt-blown non-woven fabric and a preparation method thereof. The cloth is compositely formed, heat-set, and rolled to obtain a melt-blown non-woven fabric. The melt-blown non-woven fabric includes a reinforced support structure formed by a mesh base cloth and a filter barrier layer of melt-blown ultrafine fibers; both the melt-blown ultrafine fibers and the mesh base cloth are made of resin, and the resin is polyethylene terephthalic acid Ethylene glycol ester resin, polybutylene terephthalate resin or polyhexamethylene adipamide resin. The melt-blown non-woven fabric of the present invention is not easily deformed during the disinfection process by irradiation or high-temperature sterilization process, and the function of blocking and capturing bacteria and viruses will not be reduced, and the reuse rate is improved, energy saving and environmental protection; the method of the present invention , has the advantages of low equipment investment cost and low production cost.

Description

technical field [0001] The invention belongs to the field of high-performance new fiber materials and manufacturing technology, and relates to a high-performance protective barrier melt-blown non-woven fabric and a preparation method thereof. Background technique [0002] The main isolation filter layer of existing medical non-woven fabrics is made of polypropylene (PP) melt-blown non-woven fabric. The material production process is relatively simple and the production cost is relatively low, but there are also significant performance defects, as follows: [0003] (1) The melting point of PP melt-blown cloth is 165°C. The melt-blown process is stretched and bonded and fixed in a high-speed hot air flow. The crystallinity and orientation of the fibers are low, and the overall size and size of the fibers and non-woven fabrics The stability of the three-dimensional network is poor, and its deformation temperature is often 85°C, which leads to the fact that medical masks are eas...

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): D04H3/011D04H3/009D04H3/016D04H3/14D04C1/02D04C1/08
CPCD04C1/02D04C1/08D04H3/009D04H3/011D04H3/016D04H3/14D10B2331/02D10B2331/04
Inventor 王燕萍王依民庄园园倪建华郑伟夏于旻何勇
Owner DONGHUA UNIV