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A kind of manufacturing method of spun-laid nonwoven fabric

A technology of non-woven fabrics and spun webs, which is applied in the field of non-woven fabrics manufacturing, can solve the problems of poor adjustment of vertical and horizontal strength and poor uniformity, and achieve adjustable strength ratio, good uniformity and simple operation. Effect

Inactive Publication Date: 2017-02-15
廊坊中纺新元无纺材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The wide slit drafting method has the characteristics of good uniformity, but its vertical and horizontal strength is not easy to adjust; while the vertical and horizontal strength of the narrow slit + tube drafting method can be adjusted, but the uniformity is not good

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 manufacturing method of spun-laid nonwoven fabric
  • A kind of manufacturing method of spun-laid nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Two-component composite spinning of PET and PA-6, the moisture content of the chips is 0.0022%, the melting temperature is 250°C, the composite temperature is 280°C, the air cooling temperature of side blowing is 15°C, and the wind speed is 0.5m / s , the ambient humidity is 50%. The frequency of wire laying is 350 times / min. The finished nonwoven fabric is obtained by thermal bonding and fixing the net. The appearance uniformity of the obtained non-woven fabric product is obviously better than that of products obtained by other processing methods.

Embodiment 2

[0020] Two-component composite spinning of PET and PP, the moisture content of the chips is 0.002%, the melting temperature is 260°C, the composite temperature is 300°C, the air cooling temperature of side blowing is 14°C, and the wind speed is 0.7m / s. Humidity is 55%. The frequency of wire laying is 450 times / min. The finished nonwoven fabric is obtained by thermal bonding and fixing the net. The appearance uniformity of the obtained non-woven fabric product is obviously better than that of products obtained by other processing methods.

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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PUM

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Abstract

The invention discloses a spun-laid non-woven fabric and a manufacturing method of the spun-laid non-woven fabric. According to the manufacturing method, polymer raw material slices with one or more components are pre-crystallized, dried, extruded, fused and filtered; a melt obtained in the previous step is accurately metered through a metering pump and then enters a main box to be compounded in a conjugated mode; the compounded melt is spun under the cold air condition, so that nascent yarn is obtained; the nascent yarn is subjected to wide slit air flow drafting first and then narrow slit flow drafting and tubular air flow drafting, or is subjected to narrow slit flow drafting and tubular air flow drafting first and then wide slit air flow drafting spinning; cellosilk obtained in the previous step is subjected to swing and lapping, and then the non-woven fabric is formed by net-fixing through one or more of heat bonding, chemical bonding and mechanical pre-net-fixing. The spun-laid non-woven fabric and the manufacturing method of the spun-laid non-woven fabric have the advantages that operation is simple, cost is low, production speed is high, product uniformity is good, the transverse and longitudinal strength ratio can be adjusted, the yield is further increased, and the spun-laid non-woven fabric can be applied to the fields such as wiping cloth, filtering materials and leather base cloth.

Description

technical field [0001] The invention belongs to the technical field of nonwoven fabric manufacture, and in particular relates to a method for fabricating nonwoven fabric by spinning into a web. Background technique [0002] Spunlaid nonwovens are the most mature and widely used nonwoven production method among polymer extrusion nonwovens. Spun-web non-woven technology is a model of the close combination of chemical fiber technology and non-woven technology. It uses the principle of chemical fiber spinning to lay continuous filament fibers into a web during the polymer spinning process. Mechanically, chemically or thermally bonded and reinforced into cloth, the whole process is completed by a set of equipment. Its structural characteristics are randomly composed of continuous filaments into a web (fiber aggregate), which has good physical and mechanical properties. Spunlaid technology was developed and industrialized simultaneously in the United States and Europe by DuPont ...

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): D04H3/02D04H3/005
Inventor 钱晓明宋卫民王学功
Owner 廊坊中纺新元无纺材料有限公司