Absorbent articles with barrier leg cuffs

Abstract

An absorbent article (20) for personal hygiene having a body-facing surface and an opposed garment-facing surface, the article having a front region (Z1), a back region (Z3) and an intermediate crotch region (Z2). The absorbent article comprises on each longitudinal side a gasketing cuff (32) and a barrier leg cuff (34) formed from the same web of nonwoven barrier material (110). The web of nonwoven barrier material is attached at least in the crotch region (Z2) to the topsheet by a plurality of mechanical and / or heat bonds (70), the plurality of mechanical and / or heat bonds defining in the crotch region a longitudinally extending bonding area (71) having a width W1. An adhesive (75) attaches in the crotch region the topsheet to the backsheet so that the adhesive covers at least 20% of the bonding area, this being also the case when the adhesive is notionally shifted laterally by any distance up to 4 mm.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is a continuation of application Ser. No. 14 / 247,402, filed Apr. 8, 2014, which claims the benefit of U.S. Provisional Application No. 61 / 809,519, filed Apr. 8, 2013 the substance of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The invention relates to personal hygiene absorbent articles for wearing in the lower torso, such as but not limited to baby diapers, training pants, adult incontinence products or sanitary napkins, comprising barrier leg cuffs. More particularly, the invention relates to improved attachment of the barrier leg cuffs to the rest of the article.BACKGROUND OF THE INVENTION[0003]Absorbent articles for personal hygiene, such as disposable diapers for infants, training pants for toddlers or adult incontinence undergarments are designed to absorb and contain body exudates, in particular large quantity of urine. These absorbent articles comprise several layers providing different fu...

AI Technical Summary

Benefits of technology

This solution provides a cost-effective and environmentally friendly method to attach barrier leg cuffs, effectively preventing side leakage by ensuring the adhesive covers the necessary area, even with manufacturing tolerances, thus maintaining the barrier function and reducing the occurrence of holes during bonding.

Problems solved by technology

The use of adhesive to attach the barrier leg cuffs to the rest of the article may however increase costs, be less environmentally friendly, and adhesive can come in contact with the wearer's skin.

Although this has the advantage of not requiring the use of adhesive, it has however the drawback that undesired holes may be pierced through the bonded materials while joining them.

The unwanted holes thus formed may compromise the liquid restraining function of the barrier leg cuffs.

The inventors have found that this is especially a problem for materials having a relatively low combined basis weight of less than 60 gsm and / or having a large basis weight variation.

However this material may be more complex and costly to manufacture than conventional nonwoven barrier material, and while reducing the number and size of holes, it does not completely eliminate their occurrence.

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