Retail has been granted a patent for a refining member designed for a pulp refiner. The device features refiner bars and teeth on a disc-shaped refining body, with the bars refining wood fibers and the teeth breaking up fiber bundles. The unique design enhances the refining process. GlobalData’s report on Retail 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 Retail, Fiber-reinforced material joining techniques was a key innovation area identified from patents. Retail's grant share as of February 2024 was 83%. Grant share is based on the ratio of number of grants to total number of patents.

Refining member for pulp refiner with refiner bars and teeth

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

A recently granted patent (Publication Number: US11905658B2) discloses a refining member for a pulp refiner that includes a disc-shaped refining body with refiner bars and teeth on a planar refining surface. The refiner bars refine wood fibers, while the teeth break up fiber bundles. The refiner bars have specific dimensions, with a height ranging from about 4 mm to 10 mm and a width between 2 mm to 8 mm. Additionally, the refining member features dams in some refiner grooves and a continuous floor in each refiner groove and bar, ensuring efficient refining and separation of wood fibers.

Furthermore, the patent describes a pulp refiner comprising a frame and refining members with coaxial planar refining surfaces that define a refining space. A rotor facilitates relative movement between the refining members, refining wood pulp slurry and separating fiber bundles. The teeth on the refining members are arranged in annular rows, with intermeshing teeth enhancing the refining process. The patent also details the configuration of non-rotating stator and rotating rotor members, ensuring optimal refining efficiency. Each refiner bar and groove extends continuously on the planar refining surface, with the teeth projecting to a greater height than the refiner bars, emphasizing their role in breaking up fiber bundles for improved pulp refining.

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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.