Stora Enso has patented a heat-sealable packaging material with specific coating and barrier layers on a paperboard substrate. The layers contain pigments, latex, or water-soluble polymers in defined amounts and grammage. The invention aims to improve packaging performance and manufacturing efficiency. GlobalData’s report on Stora Enso 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 Stora Enso, Sustainable packaging paper coating was a key innovation area identified from patents. Stora Enso's grant share as of March 2024 was 57%. Grant share is based on the ratio of number of grants to total number of patents.
Heat-sealable packaging material with barrier coating layers comprising pigments
A recently granted patent (Publication Number: US11952720B2) discloses a heat-sealable packaging material designed for efficient packaging applications. The material comprises a paperboard substrate with specific coating and barrier layers on each side. The first and second coating layers, made of latex or water-soluble polymer, are free of pigments, while the first and second barrier coating layers contain pigments in a specific range. The grammage of each layer falls within a defined range to ensure optimal performance.
Furthermore, the packaging material exhibits specific bending resistance indexes in both machine and cross directions, along with a low water absorption rate. The material's coating and barrier layers have precise grammage specifications, and the combined coat weight of the layers is also controlled within a specific range. The composition of the coating layers includes latex and a co-binder like polyvinyl alcohol, while the pigments in the barrier layers are selected from materials like clay, talc, and calcium carbonate. The packaging material is suitable for various packaging applications and can be used to create efficient and reliable packaging solutions.
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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.
