Perforated non-woven fabric

Abstract

The invention provides perforated non-woven fabric, consisting of at least two fibrous layers, wherein a surface layer is such a fibrous layer, with a more than 70 degree contact angle with water and having the gram weight of 3 to 30 grams per square meters; and a bottom layer is such a fibrous layer, with a less than 90 degree contact angle with water and having the gram weight of 3 to 30 grams per square meters. The non-woven fabric has through apertures from the surface layer to the bottom layer, with the aperture ratio of 5 to 50% and the stereo thickness of 0.1 to 1.5mm. On a contact face between the two fibrous layers of the perforated non-woven fabric, the fibrous layers with mutually intersected fiber are usefully wetted by body fluid in use, so that the body fluid rapidly reaches the fibrous layer with the less than 90 degree contact angle with the water under the action of capillary tubes and energy level differences; the fibrous layer with the more than 70 degree contact angle with the water is a face contacting a user; and therefore, after being absorbed, the body fluid is difficultly adsorbed around the fiber due to the more than 70 degree contact angle between the fiber and the water, as well as is prevented from returning to the surface of the perforated non-woven fabric under the action of the capillary tubes, thereby achieving a dry and comfortable effect.

Description

technical field [0001] The invention relates to a surface layer material applied to medical mattresses, women's sanitary napkins, panty liners, diapers and other disposable sanitary products, in particular to a perforated non-woven fabric. Background technique [0002] In disposable hygienic absorbent products such as medical mattresses, women's sanitary napkins, panty liners and diapers, non-woven fabrics and perforated non-woven fabrics are widely used as surface layer materials for the purpose of comfort and rapid penetration. However, existing non-woven fabrics and perforated non-woven fabrics generally use hydrophilic fibers as the raw material of non-woven fabrics. Hydrophilic fibers are conducive to rapid wetting and penetration of body fluids when they reach the surface of absorbent products. However, due to the hydrophilic surface of the fibers, It is easy to make body fluids adsorb between fibers, and at the same time, the capillary phenomenon of fibers can also re...

AI Technical Summary

Problems solved by technology

However, existing non-woven fabrics and perforated non-woven fabrics generally use hydrophilic fibers as the raw material of non-woven fabrics. Hydrophilic fibers are conducive to rapid wetting and penetration of body fluids when they reach the surface of absorbent products. However, due to the hydrophilic surface of the fibers, It is easy to make body fluids adsorb between fibers, and at the same time, the capillary phenomenon of fibers can also return body fluids after penetration to the surface of non-woven fabrics and perforated non-woven fabrics, making it feel wet, sticky to the skin, and not comfortable when used. dry

In particular, when this hydrophilic non-woven fabric is applied to the surface layer of baby diapers, it is easy to cause allergic phenomena such as redness of the baby's skin and eczema due to its poor dryness.

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