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Patents

Absorbent Article and Related Methods:

U.S. Patent No. 9,895,273

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By: Karen McIntyre

Editor, Nonwovens Industry

Fei Xu, Hong Kong; and Sun Hoi Wong, Hong Kong.
Assigned to Little Nobleman Technology Limited, Hong Kong.

Filed: 12/22/16
Issued: 2/20/18

An electronic wetness-sensing absorbent article, comprising: a flexible waterproof thin film; at least two mutually separated and insulated flexible electrodes disposed on one surface of the flexible waterproof thin film; a water-permeable braided fabric layer; and an absorbent layer disposed on the other surface of the flexible waterproof thin film, located between the flexible waterproof thin film and the water-permeable braided fabric layer, and adapted to absorb a liquid entering from the water-permeable braided fabric layer, wherein: the flexible electrodes and the absorbent layer are located on the two surfaces of the flexible waterproof thin film respectively and are mutually separated and insulated from each other; and the flexible waterproof thin film, the flexible electrodes, and the liquid contained in the absorbent layer form a non-polar variable electrolytic capacitor, in which the flexible electrodes serve as electrodes of the electrolytic capacitor, the flexible waterproof thin film serves as a dielectric of the electrolytic capacitor, the liquid serves as an electrolyte of the electrolytic capacitor, and the wetness state of the electronic wetness-sensing absorbent article is obtained by detecting the capacitance value of the variable electrolytic capacitor and change thereof.

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