Sealed Air has patented a recyclable bag for flowable materials, featuring a co-extruded multi-layer film with a metallized barrier core layer of ethylene-vinyl alcohol. The design offers heat retention, flex-crack resistance, toughness, and barrier properties while allowing for recycling. GlobalData’s report on Sealed Air 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 Sealed Air, Fiber-reinforced material joining techniques was a key innovation area identified from patents. Sealed Air's grant share as of March 2024 was 61%. Grant share is based on the ratio of number of grants to total number of patents.

Recyclable bag with metallized barrier film for flowable materials

Source: United States Patent and Trademark Office (USPTO). Credit: Sealed Air Corp

A recently granted patent (Publication Number: US11952188B1) discloses a recyclable bag designed for packaging flowable materials. The bag features a unique construction comprising a recyclable metallized barrier co-extruded multi-layer polymeric film and a non-barrier co-extruded multi-layer polymeric film. The metallized barrier film includes specific layers such as an inner sealant layer, a core barrier layer with ethylene-vinyl alcohol (EVOH), and an outer metallized sealant layer. The composition of these layers, including the types of polymers used and their densities, is carefully defined to ensure optimal performance and recyclability of the bag.

Furthermore, the patent details various embodiments of the recyclable bag, including variations in the composition and arrangement of the layers within the metallized barrier film. The inclusion of adhesive or tie resins in certain layers enhances adhesion, while the use of specific ethylene/a-olefin interpolymer fractions contributes to the overall properties of the bag. Additionally, the patent specifies the thickness range of the film, the potential use of machine direction oriented (MDO) film, and the presence of aluminum in the metallized sealant layer. By outlining these specific features and configurations, the patent aims to provide a sustainable packaging solution for flowable materials while maintaining performance and recyclability standards.

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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.