Fluid permeance surface layer of body fluid absorption article, and method of producing same

Abstract

The present invention provides a topsheet capable of shielding the dirt of the absorbent core a body fluid absorbent article. A topsheet (1) for a body fluid absorbent article includes a first plastic film layer (2), a second plastic film layer (5) and a fibrous assembly layer (3) disposed between these two film layers (2, 5). The first plastic film layer (2) includes a plurality of first plane regions (8) spaced from one another and extending in parallel to one another in one direction and the second plastic film layer (5) includes a plurality of second plane regions (58) spaced from one another and extending in parallel to one another in the one direction. Of the first and second plane regions (8, 58), at least the first plane regions (8) are formed with bridge-like regions (10) and first rising regions (12).

Description

technical field [0001] The present invention relates to a liquid-permeable surface layer used in body fluid-absorbent articles such as disposable diapers and sanitary napkins, and a method for producing the same. Background technique [0002] The liquid-permeable surface layer of the disposable sanitary napkin disclosed in Japanese Patent Application Laid-Open No. 7-328061 is formed of non-woven fabric and plastic film. The plastic film is in the form of a strip, wherein a plurality of films are bonded to the top surface of the nonwoven fabric at desired intervals in parallel to each other. The non-woven fabric is formed with a higher density area covered by the film and a lower density exposed area between the films. In the above surface layer, menses excreted onto the top surface of the nonwoven fabric is absorbed into the core below the surface layer through the exposed low density areas. The core is partly covered with a plastic film by means of a nonwoven, so that eve...

AI Technical Summary

Problems solved by technology

[0003] However, the surface layer of the above-mentioned known sanitary napkins has the disadvantage that, in the low-density area between the films, soiling of the underlying core can be seen through the non-woven fabric in the surface layer

[0004] In addition, when the surface layer rubs against the skin, if the rubbing direction intersects with the strip-shaped film, the edge of the strip-shaped film may irritate the skin like a knife edge, which is also a shortcoming of the surface layer.

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