Rengo has patented a method for manufacturing dimensionally variable lids for boxes of different sizes. The method involves cutting lid sheets along specific scorelines and perforated lines to create lids that fit the corresponding box sizes. The cut-off widths are adjusted based on the box size. GlobalData’s report on Rengo 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 Rengo, Antibacterial waterproof packaging paper was a key innovation area identified from patents. Rengo's grant share as of January 2024 was 20%. Grant share is based on the ratio of number of grants to total number of patents.

Dimensionally variable lid manufacturing method for boxes of different sizes

Source: United States Patent and Trademark Office (USPTO). Credit: Rengo Co Ltd

A recently granted patent (Publication Number: US11833774B2) discloses a dimensionally variable lid manufacturing method and device for creating lids that fit various sizes of boxes. The method involves preparing rectangular lid sheets with scorelines and perforated lines, cutting off portions of the lid sheets along adjustment sides, and forming additional scorelines for bending the lids along different sides of the box openings. The cut-off width of the portions is adjusted based on the box size, ensuring a precise fit for each lid. Additionally, the lid sheets include dimension adjustment areas and reference areas for printing, allowing for customization and identification of the lids.

Furthermore, the patent details a manufacturing device that automates the process by cutting the lid sheets, forming scorelines, and adjusting the cut-off width according to the box size. The device includes cutters, a scoreline roller, and a mechanism for adjusting the cut-off width. It also features a lid sheet conveying system and a cutter moving device for precise cutting along the adjustment sides. The device streamlines the manufacturing process by efficiently producing lids of varying sizes for individual boxes, enhancing productivity and customization in lid production.

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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.