Sca Hygiene Products Ab

Essity Hygiene and Health Aktiebolag

Fredrik Mellbin

Mattias Bosaeus

Allan Elfström

Allan ELFSTRÖM

A method for detecting a liquid discharge event in an absorbent article including a sensor adapted to generate an electrical output signal representative of a degree of wetness of the absorbent article, wherein the electrical output signal is received by a processing unit. The method including the steps of providing reference data over time representative of a liquid discharge; acquiring liquid discharge data over time in form of the electrical output signal; analyzing the liquid discharge data over time in relation to the reference data over time by the processing unit; and detecting a liquid discharge event based on the analysis. Also disclosed is a system for detecting liquid discharge event in an absorbent article including an absorbent article including a sensor being arranged to generate an output signal representative of an electrical property, and a processing unit adapted to process the output signal generated by the sensor of the absorbent article.

Method for detecting a liquid discharge to an absorbent article

An absorbent article for absorbing liquid discharge of a wearer includes conductive loops each in an open loop shape having terminal ends for electrically communicating with opposing poles of an electric potential generator such that current flows around the full conductive loop between the terminal ends when a space defined within the open loop shape is dry and such that liquid discharge in the space defined within the open loop shape is able to cause a short circuit in the conductive loop so that the current flows around a reduced impedance path. The impedance change is measurable to determine a location relative to the terminal ends where the liquid discharge has caused the short circuit. The conductive loops are oriented such that the direction in which the current travels up an outward leg of the respective conductive loop is in substantially the opposite direction for a first conductive loop as for a second conductive loop.

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Kållered, Sweden

Fredrik Mellbin