Sonoco Products has patented a core for winding sheet material, featuring a cylindrical tube with a slot containing a strip of soft material. The design allows for a softer central region to embed the leading edge of the sheet material, transitioning to a firmer outer edge for stability. GlobalData’s report on Sonoco Products 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 Sonoco Products, Magnetic lids was a key innovation area identified from patents. Sonoco Products's grant share as of March 2024 was 60%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for a core for winding sheet material

Source: United States Patent and Trademark Office (USPTO). Credit: Sonoco Products Co

A recently granted patent (Publication Number: US11970361B2) discloses a unique core design for winding sheet material, such as paper or fabric. The core consists of a cylindrical hollow tube with a slot running along its length, allowing for the insertion of a strip of material. The slot features a centrally disposed dip and the strip has varying compression levels along its length, with a softer central region compared to the leading and trailing edges. Additionally, the core design includes specific features such as parallel sidewalls, inward tapering, and a dovetail shape for optimal performance.

Furthermore, the patent claims detail variations in the slot depth, strip material composition (soft foam or rubber), and density distribution along the strip. The core design aims to provide improved winding capabilities for sheet material, ensuring a secure and efficient process. With features like varying slot width and depth, as well as specific curvature radii for the outer facing surface and bottom wall, the core design offers a novel approach to sheet material winding technology. These innovative features set this core design apart from traditional methods, potentially offering enhanced performance and efficiency in various industries utilizing sheet material winding processes.

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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.