Absorbent articles

Abstract

An absorbent article to solve such problem that side leakage of the excretion liquid can be prevented so that dry touch and flexibility can be always kept. This absorptive article has a density gradient such that the relationship of fiber densities of the respective parts of the sanitary napkin 1 is expressed as a groove part 4 > the leakage preventing wall 6A > a main absorbing area S, whereby excretion received by the leakage preventing wall 6A is smoothly transferred to the groove part 4 provided in a lower position of the leakage preventing wall 6A. The excretion liquid flowing out to the groove part 4 is kept from flowing backward to a surface sheet 5 of the main absorbing area S and the leakage preventing wall 6A.

Description

technical field [0001] The present invention relates to a liquid-absorbent article such as a sanitary napkin and a panty liner, and more particularly, to a liquid-absorbent article which hardly leaks excretion and has excellent flexibility and cushioning properties. Background technique [0002] In sanitary napkins, it is necessary to prevent so-called lateral leakage, in which excreted liquid such as menstrual blood during use moves in the width direction and leaks from side edges. Therefore, in the conventional sanitary napkins of this type, the measures for preventing horizontal leakage shown below are taken. [0003] For example, the two sides in the width direction of the surface layer of the sanitary napkin directly contacting the genitals (vaginal opening) are provided with anti-leakage walls along the length direction, so that the excretion is not easy to cross the anti-leakage wall, thereby preventing the excretion from leaking. The leak. [0004] Alternatively, a...

AI Technical Summary

Problems solved by technology

[0006] That is, although the horizontal leakage of excretion can be prevented only by providing the leakage prevention wall, since the absorption rate of excretion tends to decrease, the humidity between the skin and the sanitary napkin becomes high, and there is a problem that a comfortable dry feeling cannot be obtained.

[0007] In a liquid-absorbent article with only a leak-proof wall, the excretion received by the leak-proof wall cannot be smoothly transferred to the absorbent core located in the lower layer of the surface layer, and the excretion is easily kept in the leak-proof wall, and the leak-proof The wall itself has a lower allowable capacity for absorbing liquids than the absorbent core and, therefore, tends to exceed its allowable capacity immediately

Moreover, when the excretion exceeds the allowable capacity in the above-mentioned leak-proof wall, there will be a problem of reverse return and staining of the skin or underwear.

[0008] Moreover, the leakproof wall is easily deformed due to the volume expansion of the entire leakproof wall due to the absorption of the excretion fluid or the weight of the absorbed excretion fluid.

Therefore, because the desired shape of the above-mentioned leak-proof wall is easily broken, there is a decrease in flexibility (soft feeling or cushioning), and sometimes folds or steps are generated on the leak-proof wall, which may cause pain and discomfort caused by pressure on the user. sense problem

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