Angelini has filed a patent for a method and apparatus to produce fluff-free absorbent cores for sanitary articles. Loose fibers and superabsorbent granular material are deposited on a movable surface, mixed, and bound together to form an absorbent structure. The binding process can be done thermally or mechanically. GlobalData’s report on Angelini 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 Angelini, Peptide pharmacophores was a key innovation area identified from patents. Angelini's grant share as of September 2023 was 58%. Grant share is based on the ratio of number of grants to total number of patents.

Method and apparatus for producing fluff-free absorbent cores

Source: United States Patent and Trademark Office (USPTO). Credit: Angelini Spa

A recently filed patent (Publication Number: US20230301841A1) describes a method and apparatus for producing fluff-free absorbent cores for absorbent sanitary articles. The method involves depositing loose unbound fibers and superabsorbent granular material on a movable surface, mixing them together, and then binding the fibers to form an absorbent structure. The binding can be done through thermal or mechanical processes.

The patent claims that the binding of the loose unbound fibers can be achieved through various methods. This includes welding the fibers together using Air Through Bonding, passing the fibers between heated calendar rollers, or mechanically binding and anchoring the fibers.

The mixing of the loose unbound fibers and superabsorbent granular material is carried out using a mixing device that can include rotating brushes, gears, or electrostatic devices.

According to the patent, the superabsorbent granular material is deposited on the loose unbound fibers after they have been deposited onto the movable surface.

The movable surface in the apparatus includes a movable suction surface, and the loose unbound fibers are deposited onto it by projecting them with pressurized air jets. The suction surface is connected to a suction source.

The patent also mentions that the loose unbound fibers can be deposited onto the movable surface in a way that forms an array of discrete absorbent cores.

Overall, this patent describes a method and apparatus for producing fluff-free absorbent cores for absorbent sanitary articles. The method involves depositing and mixing loose unbound fibers and superabsorbent granular material, and then binding the fibers together. The apparatus includes a fiber deposition unit, a dispensing device for the superabsorbent granular material, a mixing unit, and a fixing unit for binding the fibers. Various binding methods and mixing devices are mentioned in the patent.

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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