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

A non-woven fabric and liquid technology, applied in the direction of non-woven fabrics, textiles and papermaking, etc., can solve problems such as the influence of human body comfort, the surface cannot be kept dry, and the liquid seepage speed is slow, so as to achieve flexible adjustment and prevent back seepage , the effect of inhibiting rewet

Active Publication Date: 2020-01-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, it is the non-woven fabric of this embodiment that can make the liquid permeate quickly and inhibit the rewetting. It is composed of the upper layer non-woven fabric 1 and the lower layer non-woven fabric 2. The non-woven fabric is prepared by carding and cross-lapping. The upper non-woven fabric 1 has a high degree of randomness, and the liquid can infiltrate in all directions along the surface of the non-woven fabric, and the infiltration speed is fast. The lower non-woven fabric 2 is prepared by ES polyphilic fibers through a non-woven direct laying process, and then stretched by a stretching machine to obtain the lower non-woven fabric 2, wherein the fibers are oriented and arranged along the machine direction to form a fixed Guide the water, the liquid reaches the lower layer and flows along the direction of the machine on the horizontal plane, which helps to guide and disperse better.

[0022] The preparation method of the above-mention...

Embodiment 2

[0028] A method for preparing a non-woven fabric that can quickly infiltrate liquid and inhibit rewetting:

[0029] Step 1: Prepare ES monophilic fibers, weigh ES monophilic fibers of the required quality, and make them with an area density of 40g / m through non-woven carding and cross-lapping processes 2 fiber web A;

[0030] Step 2: Prepare ES multiphile fibers, weigh the ES multiphile fibers of the required quality, and then stretch the fiber web B under the condition of a pressure of 5N through the non-woven direct laying process to improve the fiber in the machine direction. Degree of orientation; after stretching, the fiber web is elongated to 1.3 times the original length; the surface density is 30g / m 2 fiber web B;

[0031] Step 3: Composite fiber web A and fiber web B by parallel laying, and place fiber web A above fiber web B to obtain a composite fiber web;

[0032] Step 4: Carry out hot rolling bonding and strengthening of the composite fiber web, feed the compos...

Embodiment 3

[0034] A preparation method of a non-woven fabric that can make liquid permeate quickly and inhibit rewetting:

[0035] Step 1: Prepare ES monophilic fibers, weigh ES monophilic fibers of the required quality, and make them with an area density of 40g / m through non-woven carding and cross-lapping processes 2 fiber web A;

[0036] The second step: prepare the ES multiphile fiber, weigh the ES multiphile fiber of the required quality, through the non-woven direct laying process, and then stretch the fiber web B under the condition of a pressure of 5N, and improve the machine The degree of fiber orientation in the direction; after stretching, the fiber web is elongated to 1.3 times the original length; the surface density is 30g / m 2 fiber web B;

[0037] Step 3: Acupuncture and reinforce the fiber web A to endow the fiber web A with a certain strength, and adopt one pre-acupuncture, one front acupuncture and one reverse acupuncture to obtain the upper non-woven fabric 1;

[00...

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 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...

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): D04H1/4374D04H1/4382D04H1/492D04H1/541D04H1/559
CPCD04H1/4382D04H1/492D04H1/4374D04H1/559D04H1/541
Inventor 黄晨邱雪宁邓霁霞靳向煜吴海波
Owner DONGHUA UNIV
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