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Multi-layer composite, fluffy, 3D stereoscopic, soft and non-woven fabric and preparation method thereof

A non-woven fabric, multi-layer composite technology, applied in the field of non-woven fabrics, can solve the problems of short fiber fiber head stimulation, long production process, flat cloth surface, etc., and achieve the effects of large porosity, high strength and good air permeability

Active Publication Date: 2018-11-16
SHANDONG DAWN SWT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-component spunbonded nonwovens have the characteristics of no lint, high strength, high output, and low cost, but the cloth surface is too flat, especially in softness and bulkiness; hot air nonwovens have good bulkiness , soft touch, but there are defects such as long production process, high cost, low strength, easy fluffing, and potential short fiber fiber head irritation

Method used

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  • Multi-layer composite, fluffy, 3D stereoscopic, soft and non-woven fabric and preparation method thereof
  • Multi-layer composite, fluffy, 3D stereoscopic, soft and non-woven fabric and preparation method thereof
  • Multi-layer composite, fluffy, 3D stereoscopic, soft and non-woven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] to combine figure 1 Shown, among them, hot rolling mill pattern reference Figure 5-13 Shown, the preparation method of multilayer composite, fluffy, 3D three-dimensional, soft nonwoven fabric, comprises the following steps:

[0049] (1) Evenly mix polypropylene with a melt index (MFR) of 25-50g / 10min and softening additives with a melt index (MFR) of 30-120 / 10min, and suck it to the first spinning tower through a vacuum pump A component screw, through which heating, melting and extrusion are carried out, the temperature of the screw is 230-250°C, the rotation speed of the screw is 40-70rpm / min, the torque of the screw is 40-70N, and the melt is filtered into the melt The metering pump, melt filter and melt metering temperature are 220-240°C, and the working pressure of the metering pump is 50-70bar;

[0050] (2) Polypropylene with a melt index (MFR) of 25-50g / 10min, metallocene catalyzed propylene with a melt index (MFR) of 18-2000g / 10min, soft plastic with a melt in...

Embodiment 2

[0077] The preparation method of the multi-layer composite, fluffy, 3D three-dimensional, soft non-woven fabric adopted in embodiment 1, wherein, the melt index (MFR) of the polypropylene of the first component is 38g / 10min, the polypropylene of the second component The melt index (MFR) of the metallocene catalyzed polypropylene is 36g / 10min, and the melt index (MFR) of the metallocene-catalyzed polypropylene is 48g / 10min.

[0078] The rest of the process conditions and parameters remained unchanged.

Embodiment 3

[0080] Adopt the multilayer composite in embodiment 1, fluffy, 3D three-dimensional, the preparation method of soft nonwoven fabric, wherein:

[0081] According to the order of laying, the melt index (MFR) of the polypropylene of the first component of the bottom fiber web is 36g / 10min; the melt index (MFR) of the polypropylene of the second component is 36g / 10min, metallocene catalysis Copolymer melt index (MFR) is 25g / 10min;

[0082] The melt index (MFR) of the polypropylene of the first component of middle layer fiber web is 36g / 10min; The melt index (MFR) of the polypropylene of the second component is 35g / 10min, metallocene catalyzed copolymer melt index (MFR) 350g / 10min;

[0083] The melt index (MFR) of the polypropylene of the first component of top layer fiber web is 36g / 10min, the melt index (MFR) of the polypropylene of the second component is 40g / 10min, metallocene catalyzed copolymer melt index (MFR) ) is 2000g / 10min.

[0084] The rest of the process conditions ...

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Abstract

The invention discloses a multi-layer composite, fluffy, 3Dstereoscopic, soft non-woven fabric and a preparation method thereof. The non-woven fabric is composed of three layers of parallel bicomponent fibers, and are continuous filaments; from the top to the bottom, the proportion of the first component and the second component in the first layer fiber is 30:70, the proportion of the first component and the second component in the second layer fiber is 40:60., and the proportion of the first component and the second component in the third layer fiber is 50:50. The first layer fiber has a drawratio of 2,000 and an average fiber fineness of 13 micrometers; the second layer fiber has a draw ratio of 1,700 and an average fiber fineness of 15 micrometers; the third layer fiber has a draw ratio of 1,500 and an average fiber fineness of 17 micrometers. The non-woven fabric not only retains the advantages of high strength, no lint, high output and good processing stability of the existing single-component spun bonded nonwoven fabric, but also realizes the advantages of fluffy and cotton softness of the hot air non-woven fabric, and greatly improves the touch softness and experience comfort of disposable hygiene products.

Description

technical field [0001] The invention relates to the field of nonwoven fabrics, in particular to a multilayer composite nonwoven fabric. Background technique [0002] With the abundance of materials and the improvement of living standards, people have higher and higher requirements for the experience and comfort of disposable sanitary products such as baby diapers, adult incontinence products, and women's sanitary napkins, especially for soft touch and breathability of products. higher requirements. [0003] At present, the materials selected for disposable hygiene products are mainly single-component spunbonded hot-rolled bonded nonwovens and short fiber hot-air bonded nonwovens. One-component spunbonded nonwovens have the characteristics of no lint, high strength, high output, and low cost, but the cloth surface is too flat, especially in softness and bulkiness; hot air nonwovens have good bulkiness , Soft touch, but there are defects such as long production process, high...

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 Applications(China)
IPC IPC(8): D04H3/147D01D5/08D01D5/14D01D5/32
CPCD01D5/08D01D5/14D01D5/32D04H3/147
Inventor 慎张飞宋学丽王栋綦宝良宁新何宏伟
Owner SHANDONG DAWN SWT TECH CO LTD