Invention Grant
- Patent Title: Re-pulpable packaging material
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Application No.: US17251363Application Date: 2019-06-12
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Publication No.: US11247443B2Publication Date: 2022-02-15
- Inventor: Åsa Nyflött , Chris Bonnerup , Magnus Ekberg
- Applicant: Stora Enso OYJ
- Applicant Address: FI Helsinki
- Assignee: Stora Enso OYJ
- Current Assignee: Stora Enso OYJ
- Current Assignee Address: FI Helsinki
- Agency: Greer, Burns & Crain, Ltd.
- Priority: SE1850719-4 20180612
- International Application: PCT/IB2019/054893 WO 20190612
- International Announcement: WO2019/239334 WO 20191219
- Main IPC: B32B27/10
- IPC: B32B27/10 ; B32B27/32 ; B65D65/38 ; B32B29/00 ; D21H19/52 ; D21H19/54

Abstract:
The invention relates to a packaging material comprising: a paperboard substrate comprising a first and a second side, at least one barrier layer applied on the first side of the substrate, the barrier layer comprising a water-soluble polymer selected from the group of polyvinyl alcohol, a copolymer of ethylene and polyvinyl alcohol, starch, carboxymethylcellulose and combinations thereof in an amount of at least 50 weight %, based on the dry weight of the barrier layer, an extrusion coated layer of a polyolefin on the barrier layer, and at least one dispersion barrier layer applied on the second side of the substrate, which at least one dispersion barrier layer forms a printing surface of the packaging material. The invention further relates to a method of manufacturing a respective packaging material.
Public/Granted literature
- US20210245481A1 RE-PULPABLE PACKAGING MATERIAL Public/Granted day:2021-08-12
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