Three-dimensional pored non-woven fabric

Abstract

The present invention discloses a three-dimensional pored non-woven fabric, which is provided with four planes, wherein the first plane is formed by the tops of convex portions; the second plane is the plane where concave portions are located, and the concave portions are distributed around the convex portions; the bottoms of the convex portions and the bottoms of the concave portions form the continuous third plane; the second plane is provided with funnel-shaped three-dimensional pores extending from the second plane to the third plane; the bottoms of the funnel-shaped three-dimensional pores form the fourth plane. The third plane is a continuous plane and is located at the bottoms of the convex portions and at the bottoms of the concave portions, so that the third plane can provide effective support for the convex portions, and the contact area between the third plane and a lower diversion layer or an absorbent can be increased during the processing of the absorbent article so as to increase the bonding strength and to prevent the surface layer from falling off or shifting during use.

Description

technical field [0001] The invention relates to the field of non-woven fabrics, in particular to an open-hole three-dimensional non-woven fabric which maintains a three-dimensional shape and increases bonding strength during use. Background technique [0002] With the improvement of living standards, non-woven fabrics are widely used in hygienic absorbent products such as sanitary napkins or diapers. In order to improve the comfort of non-woven fabrics in contact with the skin, effectively reduce the contact area with the wearer's skin, increase the penetration rate of body fluids, and reduce the sense of moisture stickiness, therefore, it is necessary to open holes in the non-woven fabrics to form infiltration channels to increase non-woven fabrics. The concave-convex structure of the woven fabric reduces the contact area, so that non-woven fabrics and perforated non-woven fabrics with concave-convex structures appear. The nonwoven fabric is embossed or perforated on the s...

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No. CN103908376A, the publication date is July 9, 2014. The name of the invention is a three-dimensional non-woven fabric with an open-pore structure. The application discloses a three-dimensional non-woven fabric with raised areas and Concave area and open pore structure, each of the protruding areas to the concave area has a fiber density gradient, through the compressive performance of the high-density fiber area, the obvious concave-convex effect of the three-dimensional non-woven fabric is maintained, and the disadvantage is that the protruding The area is only supported by the high-density fibers on the side edges of the raised area, and it is difficult to maintain the 3D effect of the three-dimensional non-woven fabric under a certain pressure, and when the finished product is made, the edge of the bottom of the raised area is in the same position as the concave area. On the plane, when bonding with the diversion layer or the absorption layer, due to the small bonding area, it is not easy to bond, and it is easy to fall off and shift during use, thus affecting the absorption effect

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