Toyo Seikan Group has patented a score die with a uniform cross-section cutting blade. The method involves forming, heat treating, machining, and finishing the blade to ensure consistent dimensions and angles. Each cutting portion maintains specific measurements for optimal performance. 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 March 2024 was 48%. Grant share is based on the ratio of number of grants to total number of patents.
Method of forming a score die with uniform cutting portions
A recently granted patent (Publication Number: US11958205B2) discloses a method for forming a score die, which involves several steps such as providing blanks, forming soft finished score blades, heat treating them to become hard finished score blades, machining them to the desired shape, and performing finishing operations. The substantially finished score blades have cutting portions with specific characteristics, including a flat vertex, consistent thickness, height, and angle along the length of the cutting portion. The method aims to create uniform and precise score blades for efficient scoring operations.
Furthermore, the method includes additional steps such as machine smoothing the surface of the score blades, applying a thin coating with specific thickness, and ensuring a smoothness of 8.0 Ra(µm) or less on the surface. The finishing operations involve minimal polishing and focus on maintaining the precise dimensions of the cutting portions. The method emphasizes the importance of consistency in the dimensions of the cutting portions, with strict tolerances for changes in thickness, height, and angle. By adhering to these specifications, the method aims to produce high-quality score blades that are uniform relative to each other, ensuring reliable performance in scoring operations.
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