A method for producing an absorbent structure which includes...

A - Human Necessities – 61 – F

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A61F 13/534 (2006.01) A61F 13/15 (2006.01) A61F 13/47 (2006.01) A61F 13/49 (2006.01)

Patent

CA 2189442

A method for producing an absorbent structure intended for use in an absorbent article, such as a sanitary napkin, incontinence guard, diaper, wherein the absorbent structure in produced by laying a layer of essentially superabsorbent material between two layers of defibered and moisturized cellulose pulp or tissue, whereafter the composite structure is calendared between one or more pairs of heated rolls, wherewith the layer of superabsorbent material binds in itself and forms a stable layer, which binds to the surrounding cellulose pulp layers or tissue layers. The absorbent structure exhibits excellent absorption properties and can be made very thin. The structure can be manufactured without superabsorbent material being spread around the manufacturing machine during the production process, or escaping from the finished absorbent article when packaging, transporting or using the article.

Procédé de production d'une structure absorbante destinée à être utilisée dans un article absorbant, tel qu'une serviette hygiénique, une couche d'incontinence ou une couche-culotte, selon lequel on produit ladite structure absorbante en plaçant une couche de matériau superabsorbant entre deux couches humidifiées de pulpe de cellulose défibrée ou de papier mousseline. Ladite structure composite est ensuite satinée entre une ou plusieurs paires de cylindres chauffés, ce qui entraîne la couche de matériau superabsorbant à se lier en elle-même et à former une couche stable qui se lie aux couches de pulpe de cellulose ou de papier mousseline qui l'entourent. La structure absorbante présente d'excellentes propriétés d'absorption et peut être très mince. Elle peut être produite sans dissémination de matériau superabsorbant autour de la machine de fabrication pendant le processus de production, ou sans que ledit matériau s'échappe de l'article absorbant fini lors de l'emballage, du transport ou de l'utilisation de l'article.

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