Non-woven fabric capable of enabling liquid to quickly underflow and inhibiting backflow and preparation method of non-woven fabric

Abstract

The invention discloses a non-woven fabric capable of enabling liquid to quickly underflow and inhibiting backflow. The non-woven fabric capable of enabling the liquid to quickly underflow and inhibiting backflow is characterized by comprising an upper-layer non-woven fabric and a lower-layer non-woven fabric, wherein the areal density of the upper-layer non-woven fabric is not less than 35 g/m <2>, and the areal density of the lower-layer non-woven fabric ranges from 20 g/m<2> to 40 g/m<2>. The preparation method comprises the following steps: preparing a fiber web A from ES single hydrophilic fibers is through a non-woven carding net-forming and cross-lapping process; preparing a fiber web B from ES multi-hydrophilic fibers through a non-woven direct lapping process; placing the fiber web A over the fiber web B and carrying out reinforced compounding through a needle punching or hot rolling bonding process. in an initial state, the non-woven fabric is hydrophilic, quick underflow ofliquid can be ensured, when the liquid penetrates through the non-woven fabric, the hydrophilic oil agent of the single hydrophilic fiber is washed and separated by the liquid, the fiber web of the layer is changed from hydrophilic to hydrophobic, the hydrophilic state of the multi-hydrophilic fibers is maintained, at the moment, by the upper hydrophobic layer, backflow of the liquid under the condition of compression can be prevented effectively, and dryness of an upper layer is ensured.

Description

technical field [0001] The invention relates to a non-woven fabric that can make liquid permeate quickly and inhibit back seepage and its preparation method. ES monophilic fibers and ES polyphilic fibers are directly used for preparation without any chemical finishing process, and the preparation process is safe and pollution-free. The non-woven fabric produced can make the liquid seep quickly and inhibit the back seepage. The liquid seepage speed is fast, the anti-rewet effect is good, and the surface is dry and comfortable after the liquid penetrates. It can be applied to disposable sanitary products such as diapers and sanitary napkins. middle. Background technique [0002] Existing disposable sanitary products such as paper diapers and sanitary napkins, when meeting the conditions of good water absorption and allowing liquid to seep quickly, are prone to cause back seepage; The problems of poor performance and slow liquid infiltration speed, the existing products on the...

AI Technical Summary

Problems solved by technology

[0002] Existing disposable sanitary products such as paper diapers and sanitary napkins, when meeting the conditions of good water absorption and allowing liquid to seep quickly, are prone to cause back seepage; The problems of poor performance and slow liquid infiltration speed, the existing products on the market cannot meet the two conditions of rapid liquid infiltration and anti-rewetting at the same time, and the surface cannot be kept dry during use, which has a certain impact on the comfort of the human body. influences

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