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High-performance protecting and blocking melt-blown non-woven fabric and preparation method thereof

A melt-blown non-woven, high-performance technology, used in non-woven fabrics, textiles and papermaking, woven fabrics, etc., can solve the problems of poor dimensional stability, reduction, and easy deformation filtration efficiency, etc., to achieve good dimensional stability, reduce The effect of environmental pollution and wide selection of suppliers

Active Publication Date: 2020-07-28
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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  • High-performance protecting and blocking melt-blown non-woven fabric and preparation method thereof

Examples

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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 protecting and blocking melt-blown non-woven fabric and a preparation method thereof. Resin is subjected to vacuum drying, screw melt extrusion, metering pump metering, spinneret plate jet forming, airflow stretching curing forming, gridding cloth composite forming, heat setting and coiling, and the melt-blown non-woven fabric is prepared. The melt-blownnon-woven fabric comprises a reinforcing and supporting structure formed by gridding basic cloth and a filtering and blocking layer made of melt-blown superfine fibers. The melt-blown superfine fibers and the gridding basic cloth are made of resin, and the resin is polyethylene terephthalate resin or polybutylene terephthalate resin or polyhexamethylene adipamide resin. The melt-blown non-woven fabric does not easily deform when a radiation or high-temperature sterilization process is used for disinfection, the functions of blocking and capturing bacteria and viruses cannot be reduced, the recycling rate is increased, and energy saving and environmental friendliness are achieved. The method has the beneficial effects that the equipment invested cost is low, and the production cost is low.

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

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Application Information

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Patent Type & Authority Applications(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