Liquid-activated formulation with hot melt binding matrix

a technology of hot melt and liquid activation formulation, applied in the direction of inks, bands, transportation and packaging, etc., can solve the problems of limited color options, unreliable ph-based wetness indicators,
US20140087181A1Inactive Publication Date: 2014-03-27THE PROCTER & GAMBLE COMPANY
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
THE PROCTER & GAMBLE COMPANY
Publication Date
2014-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

A liquid-activated formulation is provided, comprising a liquid-activated colorant, a hydrochromic ionic compound, an opacifier, and a hot melt binding matrix.
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Description

FIELD OF INVENTION

[0001] Disclosed are liquid-activated formulations in a hot melt binding matrix, for use as wetness / fluid indicators in absorbent articles.BACKGROUND OF THE INVENTION

[0002] Many disposable absorbent articles comprise a wetness indicator. Wetness indicator compositions may comprise a colorant adapted to change in appearance, i.e., appear, disappear, change color, etc., upon contact with liquids such as urine, runny bowel movements, menses, etc., in the article. The color changing active used in many wetness indicator compositions are pH indicators such as bromocresol green or the like, which changes color from yellow to blue in the pH range of 3.8 to 5.4. Upon contact with a liquid, such as urine, the pH indicator will change colors to indicate the presence of the liquid, due to the higher pH of the urine.

[0003] However, current pH-based wetness indicators may be unreliable, having issues such as premature triggering and / or leaching, plus there are limits as to the var...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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