Absorbent article with colour changing properties
AssigneeSCA Hygiene Products AB
InventorsMorgan Hansson, Robert Torstensson
Life of this patent
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Abstract
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.
Claims16
An absorbent article comprising an absorbent structure, a liquid impervious outer coversheet and a nonwoven layer arranged between the outer coversheet and the absorbent structure, wherein said layer comprises thermochromic fibres, in which a thermochromic pigment is blended with a resin from which the fibers are produced.
An absorbent article comprising a liquid pervious inner coversheet, an absorbent structure, a liquid impervious outer coversheet and a liquid acquisition layer placed between the inner coversheet and the absorbent structure, wherein said absorbent structure contains a fibrous nonwoven layer containing thermochromic fibres as the sole fibrous component.
A method of indicating wetness in an absorbent article, the method comprising:
- blending a thermochromic pigment with a resin to produce a plurality of thermochromic fibers;
- and
- including the thermochromic fibers in the absorbent article,
- wherein:
- (i) the absorbent article comprises an absorbent structure, a liquid impervious outer coversheet and a nonwoven layer arranged between the outer coversheet and the absorbent structure, wherein said layer comprises the thermochromic fibres;
- or (ii) the absorbent article comprises a liquid pervious inner coversheet, an absorbent structure, a liquid impervious outer coversheet and a liquid acquisition layer placed between the inner coversheet and the absorbent structure, wherein said absorbent structure comprises the thermochromic fibres.
A method of indicating a fever in a wearer of an absorbent article, the method comprising:
- blending a thermochromic pigment with a resin to produce a plurality of thermochromic fibers;
- and
- including the thermochromic fibers in the absorbent article,
- wherein:
- (i) the absorbent article comprises an absorbent structure, a liquid impervious outer coversheet and a nonwoven layer arranged between the outer coversheet and the absorbent structure, wherein said layer comprises the thermochromic fibres;
- or (ii) the absorbent article comprises a liquid pervious inner coversheet, an absorbent structure, a liquid impervious outer coversheet and a liquid acquisition layer placed between the inner coversheet and the absorbent structure, wherein said absorbent structure comprises the thermochromic fibres.
A method of controlling microorganisms in an absorbent article, the method comprising:
- blending a thermochromic pigment with a resin to produce a plurality of thermochromic fibers;
- and
- including the thermochromic fibers in the absorbent article,
- wherein:
- (i) the absorbent article comprises an absorbent structure, a liquid impervious outer coversheet and a nonwoven layer arranged between the outer coversheet and the absorbent structure, wherein said layer comprises the thermochromic fibres;
- or (ii) the absorbent article comprises a liquid pervious inner coversheet, an absorbent structure, a liquid impervious outer coversheet and a liquid acquisition layer placed between the inner coversheet and the absorbent structure, wherein said absorbent structure comprises the thermochromic fibres.
A method of indicating de-elastification of a portion of an absorbent article, the method comprising:
- blending a thermochromic pigment with a resin to produce a plurality of thermochromic fibers;
- and
- including the thermochromic fibers in the absorbent article,
- wherein:
- (i) the absorbent article comprises an absorbent structure, a liquid impervious outer coversheet and a nonwoven layer arranged between the outer coversheet and the absorbent structure, wherein said layer comprises the thermochromic fibres;
- or (ii) the absorbent article comprises a liquid pervious inner coversheet, an absorbent structure, a liquid impervious outer coversheet and a liquid acquisition layer placed between the inner coversheet and the absorbent structure, wherein said absorbent structure comprises the thermochromic fibres.
Dependencies are inferred from the claim text.