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Microporous skin-core structured bi-component composite fiber preparation method

A skin-core structure and composite fiber technology, applied in the field of spinning, can solve the problems of reduced efficacy, inability to exert the actual efficacy of functional masterbatch, and the concentration of oil agent should not be too high, to achieve strong deodorizing and sterilizing functions, improve hydrophilicity, Effect of improving skin affinity

Active Publication Date: 2019-10-22
福建闽瑞新合纤股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bicomponent fiber used as a hygienic material needs to be in contact with the skin, and it needs to be in contact with physiological fluids such as sweat, urine, and menstrual fluid during use. If the surface of the fiber is coated with a special oil, it is easily diluted by the physiological fluid It will reduce the efficacy, but at the same time, in order to prevent skin allergies, the oil concentration should not be too high
However, by adding functional masterbatches, the actual effect of functional masterbatches cannot be exerted due to failure to effectively contact with the outside air and liquid.

Method used

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  • Microporous skin-core structured bi-component composite fiber preparation method
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  • Microporous skin-core structured bi-component composite fiber preparation method

Examples

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Effect test

Embodiment 1

[0031] A method for preparing a microporous sheath-core structure bicomponent composite fiber, specifically comprising the following steps:

[0032] S1. Take polyethylene and polyethylene terephthalate with a mass ratio of 30:70, and carry out crystallization and drying of polyethylene terephthalate. The crystallization drying temperature is 150° C., and the drying time is 60 minutes. Add a pore-forming agent to the polyethylene and mix evenly to assist in the formation of micropores during the skin spinning process. The pore-forming agent is sodium bicarbonate that can be completely decomposed at 270 ° C. The amount added is 10% of the polyethylene mass. Ethylene glycol phthalate and polyethylene with pore forming agent are passed through melting screw extrusion equipment to obtain polyethylene spinning melt and polyethylene terephthalate spinning melt, and then sent to the composite spinning box , respectively pass polyethylene terephthalate and polyethylene with pore-formin...

Embodiment 2

[0040] A method for preparing a microporous sheath-core structure bicomponent composite fiber, specifically comprising the following steps:

[0041] S1, take the polyethylene and polyethylene terephthalate that mass ratio is 70:40, carry out crystallization and drying to polyethylene terephthalate, the crystallization drying temperature of polyethylene terephthalate The temperature is 160℃, the drying time is 60min, and the pore-forming agent is added to polyethylene and mixed evenly to assist in the formation of micropores during the skin spinning process. The pore-forming agent is water-soluble polyvinylpyrrolidone, and the amount added is 1% of the polyethylene mass %, polyethylene terephthalate and polyethylene with pore-forming agent are passed through melting screw extrusion equipment to obtain polyethylene spinning melt and polyethylene terephthalate spinning melt and then sent into the composite spinning box;

[0042] S2. The polyethylene spinning melt and the polyeth...

Embodiment 3

[0050] A method for preparing a microporous sheath-core structure bicomponent composite fiber, specifically comprising the following steps:

[0051] S1, take the polyethylene and polyethylene terephthalate that mass ratio is 60:50, carry out crystallization and drying to polyethylene terephthalate, the crystallization drying temperature of polyethylene terephthalate The temperature is 155°C, and the drying time is 50min. Add a pore-forming agent to polyethylene and mix evenly to assist in the formation of micropores during the skin spinning process. The pore-forming agent is ethylene glycol with a boiling point of 197°C, and its addition amount is polyethylene 6% of the mass, the polyethylene terephthalate and the polyethylene added with the pore forming agent are passed through the melting screw extrusion equipment to obtain the polyethylene spinning melt and the polyethylene terephthalate spinning melt. After the body is sent to the composite spinning box;

[0052] S2. The ...

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Abstract

The invention relates to a microporous skin-core structured bi-component composite fiber preparation method. The method includes steps: S1, adding a pore forming agent into polyethylene, feeding intoa melt screw extrusion equipment along with polyethylene terephthalate according to a mass ratio of 30:70-70:30 to obtain polyethylene spinning melt and polyethylene terephthalate spinning melt, and sending into a complex spinning manifold; S2, injecting the polyethylene spinning melt and polyethylene terephthalate spinning melt entering the complex spinning manifold into bi-component different passages of the complex spinning manifold respectively; S3, after bi-component melt compounded through the complex spinning manifold is jet from complex spinnerets, cooling and winding to form bi-component composite filament bundles, feeding the filament bundles into sliver drums through feeding wheels, and gathering the filament bundles in the multiple sliver drums to obtain gathered bundles; S4, subjecting the gathered bundles obtained in the step S3 to drafting, rolling and the like to form microporous skin-core structured bi-component composite fibers.

Description

technical field [0001] The invention belongs to the technical field of spinning, and in particular relates to a preparation method of a multi-porous sheath-core structure bicomponent composite fiber. Background technique [0002] At present, the global fiber industry is still in a period of in-depth adjustment. Under the rapid promotion of a new round of technological revolution and new consumption concepts, functionalization, greening, differentiation and flexibility have become new trends in the development of the chemical fiber industry. PE / PET (polyethylene / polyethylene terephthalic acid plastics), PE / PP (polyethylene / polypropylene) and other bi-component composite fibers have a low melting point in the cortex, and use thermal bonding to form non-woven fabrics. This industry The heat-bonded nonwovens used in the world use sheath-core fibers, and the melting point of the skin material is lower than that of the core layer. The conventional melting point component is used a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/06D01D5/34D01D5/247D01D5/08
CPCD01F8/14D01F8/06D01D5/34D01D5/247D01D5/08
Inventor 陈兴华卓志明林鹏刘剑吴学海曾武
Owner 福建闽瑞新合纤股份有限公司
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