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High-elasticity recovery melt-blown non-woven fabric and preparation method thereof

A technology of melt-blown non-woven fabrics and non-woven fabrics, which is applied in the direction of non-woven fabrics, textiles, and papermaking, and can solve the problems of difficult stretching air velocity and temperature control, difficulty in preparing ultra-fine fibers, high die head pressure, etc. , to achieve the effect of improving silky feel, excellent stability and improving mechanical strength

Pending Publication Date: 2021-01-29
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is often difficult to achieve precise control of the speed and temperature of the stretched airflow in the actual production process
In addition to the instability of the melt-blown process itself, there are still some technical difficulties in the preparation of nonwovens by direct melt-blown elastic polymers: due to the high viscosity and elasticity of the elastomer melt, the die head pressure is too high, and the melt Melt fracture is prone to occur when being extruded; the melt will shrink when it is drawn by hot air after being extruded from the spinneret hole, and it is difficult to prepare ultra-fine fibers; in addition, how to reduce the extruded melt Bonding between filaments is also a technical problem that needs to be solved
[0009] At present, there are few reports on the preparation of nonwoven materials using SEBS / PP blends. The main conclusion is that the addition of PP can reduce the melt viscosity and improve the fluidity of the blend.

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-elasticity recovery melt-blown non-woven fabric and preparation method thereof
  • High-elasticity recovery melt-blown non-woven fabric and preparation method thereof
  • High-elasticity recovery melt-blown non-woven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 , 2 , Shown in 3, a kind of high elastic recovery meltblown nonwoven fabric, this nonwoven fabric is prepared from following raw material: styrene-ethylene-butylene-styrene block copolymer (SEBS), PP, erucamide , the above raw materials are mixed to form a mixture. Among them, the percentage of styrene-ethylene-butylene-styrene block copolymer (SEBS) and PP is 100:0, and the addition of erucamide accounts for 5% of the mixture; the melt index of the control mixture is 100g / 10min (at 230°C, under the condition of 2.16kg), the grammage of the prepared nonwoven fabric is 89.5g / m 2 , fiber fineness is 1.38-8.74um, MD elongation is between 731-868%, CD elongation is between 723-761%, when stretched 100%, MD elastic recovery is 90-94% , CD elastic recovery rate of 90-92%.

[0031] A method for preparing highly elastic recovery melt-blown nonwovens, comprising the steps of:

[0032] (1) Put the mixture into the feed hopper of the mixer in proportion, heat...

Embodiment 2

[0036] A kind of high elastic recovery meltblown nonwoven fabric, this nonwoven fabric is prepared from following raw material: styrene-ethylene-butylene-styrene block copolymer (SEBS), PP, erucamide, above-mentioned raw material is carried out Mix to form a mix. Among them, the percentage of styrene-ethylene-butylene-styrene block copolymer (SEBS) and PP is 95:5, and the addition amount of erucamide accounts for 5% of the mixture; the melt index of the control mixture is 300g / 10min (at 230°C, under the condition of 2.16kg), the grammage of the prepared nonwoven fabric is 67g / m 2 , the fiber fineness is 1.23-9.12um, the MD elongation is between 705-834%, the CD elongation is between 653-722%, and when stretched 100%, the MD elastic recovery is 85-90% , CD elastic recovery rate of 83-89%.

[0037] A method for preparing highly elastic recovery melt-blown nonwovens, comprising the steps of:

[0038] (1) Put the mixture into the feed hopper of the mixer in proportion, heat and...

Embodiment 3

[0042] A kind of high elastic recovery meltblown nonwoven fabric, this nonwoven fabric is prepared from following raw material: styrene-ethylene-butylene-styrene block copolymer (SEBS), PP, erucamide, above-mentioned raw material is carried out Mix to form a mix. Among them, the percentage of styrene-ethylene-butylene-styrene block copolymer (SEBS) and PP is 70:30, and the addition of erucamide accounts for 3% of the mixture; the melt index of the control mixture is 800g / 10min (at 230°C, under the condition of 2.16kg), the grammage of the prepared nonwoven fabric is 72.5g / m 2 , the fiber fineness is 0.78-10.13um, the MD elongation is between 378-523%, the CD elongation is between 310-477%, and when stretched 100%, the MD elastic recovery is 69-76% , CD elastic recovery rate of 66-71%.

[0043] A method for preparing highly elastic recovery melt-blown nonwovens, comprising the steps of:

[0044] (1) Put the mixture into the feed hopper of the mixer in proportion, heat and me...

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Abstract

The invention relates to the technical field of production of non-woven fabrics, in particular to a high-elasticity recovery melt-blown non-woven fabric and a preparation method thereof. The non-wovenfabric is prepared from the following raw materials in percentage by weight of 0-50% of polypropylene; 0-10% of a slipping agent; and the balance of thermoplastic elastomer. The preparation method comprises the steps of mixing the raw materials to form a mixture, and controlling the melt index of the mixture to be 55-1500g / 10min, the gram weight of the non-woven fabric to be 10-200g / m <2>, the fiber diameter to be 0.5-20mu m, the elongation to be 50-900% and the elastic recovery rate to be 55-95%. The invention further discloses a preparation method of the high-elasticity recovery melt-blownnon-woven fabric. The prepared non-woven fabric can be applied to the fields of medical treatment and public health and clothes, and the prepared non-woven fabric is good in elasticity, stability andbreathability, low in preparation cost, environmentally friendly and worthy of wide application and popularization.

Description

technical field [0001] The invention relates to the technical field of nonwoven fabric production, in particular to a highly elastic recovery melt-blown nonwoven fabric and a preparation method thereof. Background technique [0002] As we all know, melt-blown non-woven fabrics are composed of ultra-fine short fibers arranged in disorder, with large specific surface area, small pores and large porosity, fluffy structure, good isotropy, soft hand feeling, filterability, Good air permeability and heat insulation performance. In addition to the above common characteristics, melt-blown elastic non-woven fabrics also have excellent properties such as elasticity, stretchability and flexibility. These properties have been widely demanded and applied in aspects such as medical use and taking. Articles supported by melt-blown elastic non-woven fabrics can fit closely with the wearer's body or other articles, increasing the comfort of wearing and using. If it is used as a medical ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/4282D04H1/558D04H1/56
CPCD04H1/4282D04H1/4382D04H1/558D04H1/56
Inventor 常丽陈韶娟江亮蓝鹏飞
Owner QINGDAO UNIV