Daio Paper‘s patented absorbent article features a cellulose nanofiber layer that enhances contact efficiency between a deodorant substance and odor. The design includes an absorber, liquid impervious resin film, and exterior nonwoven fabric, offering improved odor control. GlobalData’s report on Daio Paper 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 Daio Paper, Incontinence monitoring sensors was a key innovation area identified from patents. Daio Paper's grant share as of March 2024 was 76%. Grant share is based on the ratio of number of grants to total number of patents.

Absorbent article with cellulose nanofiber layer for odor control

Source: United States Patent and Trademark Office (USPTO). Credit: Daio Paper Corp

A recently granted patent (Publication Number: US11963857B2) discloses an innovative absorbent article designed to enhance odor control. The article comprises an absorber, a liquid impervious resin film covering the absorber, and an exterior nonwoven fabric. A key feature of this invention is the inclusion of a cellulose nanofiber layer between the resin film and the nonwoven fabric at specific intervals. This cellulose nanofiber layer, capable of interacting with odors in the surrounding environment, is directly attached to the resin film. Additionally, the resin film is bonded to the nonwoven fabric using a hot melt adhesive, excluding the areas where the cellulose nanofiber layer is present.

Furthermore, the patent details the specific characteristics of the exterior nonwoven fabric, including fiber fineness, basis weight, and thickness. The cellulose nanofiber layer is strategically placed in certain portions of the absorbent article, such as the dorsal side, to optimize its odor-controlling properties. The average fiber width of the cellulose nanofibers and the quantity of cellulose nanofibers in the layer are also specified in the claims. Overall, this patented absorbent article aims to provide improved odor management through the strategic integration of cellulose nanofibers within its structure, offering a potential solution for enhanced user comfort and hygiene in various applications.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.