Silgan. has filed a patent for a closure design that remains attached to a container even after opening. The closure features an attachment channel with frangible connections and linear openings, providing a visual indication of tampering. The design includes hinge bridges that remain intact when the closure is opened. GlobalData’s report on Silgan 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 Silgan, Magnetic lids was a key innovation area identified from patents. Silgan's grant share as of January 2024 was 70%. Grant share is based on the ratio of number of grants to total number of patents.

Closure with frangible connections and attachment band for containers

Source: United States Patent and Trademark Office (USPTO). Credit: Silgan Holdings Inc

The patent application (Publication Number: US20240025608A1) describes a closure for a container that includes an end wall with a sidewall extending downward, an indicator section with frangible connections for visual indication of opening, and an attachment band that remains connected to the container after opening. The closure features an attachment channel with top and bottom channels, with the bottom channel including hinge bridges wider than the frangible connections to remain unbroken when the closure is opened. The frangible connections are spaced approximately every 20 degrees around the axis of the closure.

Furthermore, the closure includes an indicator section that can be in an open or closed configuration based on the status of the frangible connections, providing a clear visual indication of whether the closure has been opened. The attachment channel may include raised ribs along the sidewall for added structural support, and the indicator section maintains the connection between the attachment band and the sidewall even after the majority of frangible connections are broken. Additionally, the attachment channel may have a helical profile extending more than 360 degrees around the indicator section, enhancing the security and tamper-evident features of the closure design.

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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.