Toyo Seikan Group has patented a method for manufacturing rectangular can bodies. This method enhances the angle between the step surface and the inner wall of the can, utilizing a die, mandrel, and punch to achieve precise step formation through multiple pressing operations. GlobalData’s report on Toyo Seikan 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 Toyo Seikan Group, Fuel cell powered drones was a key innovation area identified from patents. Toyo Seikan Group's grant share as of July 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.
Method for manufacturing rectangular can bodies with precise steps
The patent US12070788B2 outlines a method for manufacturing a rectangular can body, which includes a rectangular tube and a bottom. The process begins with the formation of an intermediate molded article that features the rectangular tube and bottom. A key aspect of the method involves creating steps on the inner wall surfaces of the rectangular tube. This is achieved by utilizing a die positioned on the outer wall surface and a mandrel that sandwiches the sidewall. A punch is then employed to perform multiple pressing operations, compressing the sidewall to form the desired steps. The claims detail various configurations for the inner wall surfaces, including parallel surfaces and connection surfaces, which facilitate the step formation.
Further claims elaborate on the specifics of the pressing operation, including variations in the movement amount of the punch during the pressing cycles. The method also encompasses a drawing and ironing step to mold the rectangular tube, ensuring that the step surfaces are level with the corners of the tube. Additionally, the process includes a step for removing a portion of the intermediate molded article after the steps have been formed. The patent emphasizes the versatility of the pressing operation, allowing for incremental or consistent movement of the punch, which can be adjusted based on the manufacturing requirements. Overall, the claims provide a comprehensive framework for producing a structurally sound rectangular can body with defined inner wall features.
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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.
