Ontex Group has patented a method using a thermal imaging camera to measure airflow through channels in absorbent article cores. By loading the core with warm liquid and spraying cold fluid on the channels, the airflow can be visually recorded. GlobalData’s report on Ontex Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Ontex Group, Incontinence monitoring sensors was a key innovation area identified from patents. Ontex Group's grant share as of January 2024 was 44%. Grant share is based on the ratio of number of grants to total number of patents.

Method for measuring airflow through absorbent article core

Source: United States Patent and Trademark Office (USPTO). Credit: Ontex Group NV

A recently granted patent (Publication Number: US11883270B2) discloses a method for measuring airflow through a channel in an absorbent article core. The method involves loading the absorbent core with warm liquid, visually recording it with a thermal imaging camera, and spraying the channel with a cold fluid while recording the process. The patent also includes steps for preconditioning the absorbent core, using specific temperature ranges for the warm liquid and cold fluid, and incorporating a distance measuring scale to measure the speed of airflow through the channel.

Furthermore, the patent describes an absorbent article with channels designed to have a speed of airflow greater than 200 mm/s. It also details a method for comparing liquid distribution between different absorbent article cores using thermal imaging and image analysis techniques. The patent covers various aspects of the method, including the temperature ranges of the warm liquid and cold fluid, the use of liquefied gas as the cold fluid, and the specific characteristics of the absorbent cores. Overall, the patent aims to provide a comprehensive and innovative approach to measuring airflow and liquid distribution in absorbent articles, particularly in personal hygiene products like disposable diapers and sanitary napkins.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.