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A kind of medical non-woven composite material and preparation method thereof

A composite material, non-woven technology, applied in the application, non-woven fabric, rayon manufacturing and other directions, can solve the problem of single function, achieve the effect of short process flow, simple equipment and good ductility

Active Publication Date: 2018-09-07
CHTC JIAHUA NONWOVEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country consumes a large amount of medical non-woven fabrics every year, but the current commercially available medical non-woven fabrics have relatively single functions, and there is a lack of a medical non-woven fabric that integrates antibacterial, radiation protection, and antistatic functions.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of medical non-woven composite material, comprising the steps of:

[0026] (1) Weigh 30 parts of poly(butylene adipate / terephthalate), 20 parts of polylactic acid and 30 parts of polypropylene in parts by weight, and mix thoroughly to obtain mixture A;

[0027] (2) Blend the mixture in step (1) with 2 parts of sodium dodecylbenzenesulfonate and 1 part of silver-loaded titanium dioxide, and then extrude and granulate through a twin-screw extruder to obtain a blend , the extrusion temperature is 230°C;

[0028] (3) Vacuum-dry the blend in step (2) at 100°C for 32 hours, so that the moisture content is less than 120ppm. The dried blend is heated by a screw extruder, melted at 260°C, and extruded into a melt. When When the melt is extruded from the spinneret hole of the die head, it is blown by the high-pressure hot air flow with a flow rate of 90m / sec and a temperature of 260°C on both sides of the spinneret hole, and the blend melt is stretched into ...

Embodiment 2

[0031] A preparation method of medical non-woven composite material, comprising the steps of:

[0032] (1) Weigh 40 parts of poly(butylene adipate / terephthalate), 30 parts of polylactic acid and 40 parts of polypropylene in parts by weight and mix thoroughly to obtain mixture A;

[0033] (2) Blend the mixture in step (1) with 3 parts of sodium dodecylbenzenesulfonate and 1 part of ε-polylysine, and then extrude and granulate through a twin-screw extruder to obtain blend, the extrusion temperature is 230°C;

[0034] (3) Vacuum-dry the blend in step (2) at 110°C for 36 hours, so that the moisture content is less than 100ppm. The dried blend is heated by a screw extruder, melted at 280°C, and extruded into a melt. When When the melt is extruded from the spinneret hole of the die, it is blown by the high-pressure hot air flow with a flow rate of 100m / sec and a temperature of 280°C on both sides of the spinneret hole, and the blend melt is stretched into ultra-fine fibers and coag...

Embodiment 3

[0037] A preparation method of medical non-woven composite material, comprising the steps of:

[0038] (1) Weigh 50 parts of poly(butylene adipate / terephthalate), 30 parts of polylactic acid and 40 parts of polypropylene in parts by weight, and mix thoroughly to obtain mixture A;

[0039] (2) Blend the mixture in step (1) with 4 parts of sodium dodecylbenzenesulfonate and 2 parts of silver-loaded titanium dioxide, and then extrude and granulate through a twin-screw extruder to obtain a blend , the extrusion temperature is 250°C;

[0040] (3) Vacuum-dry the blend in step (2) at 120°C for 20 hours, so that the moisture content is less than 110ppm. The dried blend is heated by a screw extruder, melted at 250°C, and extruded into a melt. When When the melt is extruded from the spinneret hole of the die head, it is blown by the high-pressure hot air flow with a flow rate of 120m / sec and a temperature of 270°C on both sides of the spinneret hole, and the melt of the blend is stretc...

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Abstract

The invention provides a preparing method for an antibacterial non-woven-fabric composite material. The preparing method includes the following specific steps that (1) 30-50 parts by weight of poly-adipic acid / polybutylene terephthalate, 20-30 parts by weight of polylactic acid and 30-40 parts by weight of polypropylene are weighed respectively, and are fully mixed, and a mixture A is obtained; (2) the mixture in the step (1) is blended with 1-4 parts of antistatic agent and 0.5-2 parts of antibacterial agent, then the mixture is subjected to extrusion pelletizing through a double-screw extruder, and a blend is obtained; (3) the blend in the step (2) is subjected to vacuum drying, and the dried blend is heated, fused, extruded, stretched, cooled and self-bonded through a screw extruder toform a non-woven fabric; (4) an anti-radiation layer is sprayed to one side of the non-woven fabric obtained in the step (3), and the obtained non-woven fabric is put into a drying box and dried and shaped finally. The medical non-woven-fabric composite material prepared with the method has the antibacterial property, can resist radiation, has the antistatic performance, and is mainly applied to preparation of medical masks.

Description

technical field [0001] The invention belongs to the field of non-woven fabrics, and in particular relates to a medical non-woven fabric composite material and a preparation method thereof. Background technique [0002] Non-woven fabric (non-woven fabric) is a kind of fabric formed without spinning and weaving. It just orients or randomly arranges short textile fibers or filaments to form a web structure, and then uses mechanical, thermal bonding or chemical bonding. Reinforced by other methods. To put it simply: it is not interwoven and knit together by yarns one by one, but the fibers are directly bonded together through physical methods, so when you get the sticky scale in your clothes , you will find that it is impossible to extract the thread ends one by one. Nonwovens have broken through the traditional textile principles, and have the characteristics of short process flow, fast production speed, high output, low cost, wide application, and multiple sources of raw mat...

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): D04H3/005D04H3/147D04H3/16A41D13/11D01F1/10D01F1/09
CPCA41D13/11D01D13/00D01F1/09D01F1/103D01F8/06D01F8/14D04H1/4382D04H1/541D04H3/005D04H3/147D04H3/16D06M11/00D06M13/00D06M15/00D06N3/0011D06N3/0036D06N3/0038D06N3/009D10B2321/022D10B2331/04D10B2401/061D10B2401/13D10B2401/16D10B2509/00
Inventor 万全军
Owner CHTC JIAHUA NONWOVEN CO LTD
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