SIG Combibloc Group has been granted a patent for a bag designed for bag-in-box packaging. The bag features a dual-layer film structure, combining oriented polyethylene and a five-layer coextrusion with EVOH, ensuring compatibility for polyethylene recycling and branding as PE recyclable. GlobalData’s report on SIG Combibloc 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 SIG Combibloc Group, was a key innovation area identified from patents. SIG Combibloc Group's grant share as of July 2024 was 61%. Grant share is based on the ratio of number of grants to total number of patents.
Recyclable bag for flowable materials in bag-in-box packaging
The granted patent US12043012B2 describes a specialized bag designed for use in a bag-in-box packaging system. The bag features a front panel and a back panel that are sealed together to create a cavity for holding flowable materials. Each panel is constructed from a film that consists of two laminated portions: a first portion made of oriented polyethylene and a second portion formed from a five-layer coextrusion. This coextrusion includes a core layer of ethylene vinyl alcohol (EVOH) with a specific ethylene content, along with multiple layers of linear low-density polyethylene (LLDPE) and maleic anhydride modified LLDPE. Notably, the entire film structure is compatible with polyethylene recycling, allowing it to be branded as recyclable with a single PE symbol.
In addition to the primary claims, the patent outlines various specifications regarding the film's thickness and the composition of its layers. The film thickness ranges from 43 µm to 180 µm, with the core thickness between 2.5 µm and 13 µm. The design also allows for the inclusion of inner ply panels, enhancing the bag's structural integrity. Furthermore, the patent describes a complete bag-in-box package that incorporates the bag within a rigid outer container, which may also feature a spout for easy dispensing of the contents. This innovative design aims to improve the functionality and recyclability of packaging solutions for liquid products.
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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.
