- 专利标题: Recyclable paper packaging with high barrier to water vapor and oxygen
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申请号: US17904591申请日: 2020-11-27
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公开(公告)号: US20230114239A1公开(公告)日: 2023-04-13
- 发明人: Achim Grefenstein , Dudley Jones , Stefan Büttner
- 申请人: Constantia Pirk GmbH & Co. KG
- 申请人地址: DE Pirk
- 专利权人: Constantia Pirk GmbH & Co. KG
- 当前专利权人: Constantia Pirk GmbH & Co. KG
- 当前专利权人地址: DE Pirk
- 优先权: ATA50116/2020 20200218
- 国际申请: PCT/EP2020/083727 WO 20201127
- 主分类号: B65D65/40
- IPC分类号: B65D65/40 ; B32B27/10 ; B32B27/32 ; B32B7/12 ; B32B27/08 ; B32B27/34 ; B32B27/30
摘要:
A recycling-friendly, easily producible paper packaging laminate with a high barrier against water vapor, oxygen and/or aromas, wherein a barrier film includes at least one substrate layer, a joining layer, and a barrier layer, wherein the joining layer is arranged between the substrate layer and the barrier layer, in that the substrate layer consists predominantly of polyethylene or polypropylene with a polyethylene content or a polypropylene content of at least 60 wt. % of the substrate layer, in that at least the at least one substrate layer of the barrier film is stretched, in that the content of the paper layer is between 50 wt. % and 90 wt. % of the paper packaging laminate, and in that the barrier film is joined to the paper layer by a hydrophilic adhesive layer, wherein the side of the paper layer facing the barrier film is uncoated.
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