Sca Hygiene Products Ab

Robert Torstensson

Morgan Hansson

Henrik Carlén

An absorbent article such as a diaper, a pant diaper, a sanitary napkin, an incontinence guard etc., which includes thermochromic fibers. The thermochromic fibers may be incorporated in one or more of the following components of the absorbent article: the inner coversheet, the acquisition layer, the absorbent structure, the outer coversheet or a layer arranged between the outer coversheet and the absorbent structure. The article may alternatively contain a fibrous layer which mainly or entirely contains thermochromic fibers. The thermochromic fibers may be used as wetness indicator, as a fever indicator, as a function control for microorganisms that have been incorporated in the article or for amusement purposes, such as creating color imprints of hands etc.

Absorbent article with colour changing properties

An absorbent article, such as a diaper, a pant diaper, a sanitary napkin, an incontinence guard etc., includes components that are joined together by a bonding pattern. The bonding pattern has color-changing properties triggered by heat and/or pressure exerted during the bonding process, the color-changing properties being either irreversible or reversible. The color-changing properties may be accomplished by thermochromic pigments, thermochromic fibers and/or pressure-sensitive pigments. A laminate is formed from two or more web material layers joined together by a bonding pattern having color-changing.

Absorbent articles and laminates containing a bonding pattern

A method for manufacturing an absorbent hygiene article having a plurality of components that are joined together during the manufacturing process. Thermochromic fibres are incorporated in a component web, component or a selected area thereof, said thermochromic fibres being adapted to change colour between a contrasting colour to a less contrasting colour. A colour change of said thermochromic fibres is induced during one step of the manufacturing process and the presence of the thermochromic fibres being in their contrasting state is detected by a detection means. A measure in the process control is actuated in response to the detected presence of thermochromic fibres in their contrasting state.

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Göteborg, Sweden

Robert Torstensson