发明公开
EP3708514A1 A HEAT-SEALABLE BIODEGRADABLE PACKAGING MATERIAL, A PACKAGE OR A CONTAINER MADE THEREOF, AND USE OF A RESIN IN EXTRUSION COATING
有权
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基本信息:
- 专利标题： A HEAT-SEALABLE BIODEGRADABLE PACKAGING MATERIAL, A PACKAGE OR A CONTAINER MADE THEREOF, AND USE OF A RESIN IN EXTRUSION COATING
- 申请号：EP20162939.1 申请日：2012-06-20
- 公开(公告)号：EP3708514A1 公开(公告)日：2020-09-16
- 发明人： Nevalainen, Kimmo , Ribu, Ville
- 申请人： Stora Enso Oyj
- 申请人地址： PL 309 (Kanavaranta 1) 00101 Helsinki FI
- 专利权人： Stora Enso Oyj
- 当前专利权人： STORA ENSO OYJ
- 当前专利权人地址： STORA ENSO OYJ
- 代理机构： Berggren Oy, Helsinki & Oulu
- 优先权： FI20115745 20110712
- 主分类号： B65D65/46
- IPC分类号： B65D65/46 ; B32B29/00 ; C08L67/04 ; D21H19/28 ; B65D65/40 ; B29C41/30 ; B32B27/08 ; B32B27/10 ; B32B27/30 ; B32B27/36 ; B32B1/02 ; C09D167/04 ; D21H27/10 ; D21H19/82
摘要：
The invention concerns a heat-sealable biodegradable packaging material, which comprises a fibrous substrate (1) and one or more polymer coating layers (2) extruded onto said substrate. According to the invention the packaging material includes at least one polymer coating layer (2) containing at least 70 weight-% of polylactide (PLA) and at least 5 weight-% of polybutylene succinate (PBS) or its derivate blended therewith. Optionally an acryl copolymer such as ethylene butyl acrylate glycidyl methacrylate terpolymer (EBAGMA) may be included in the polymer blend. The invention further concerns a heat-sealed container, such as a disposable drinking cup, and a heat-sealed product package made from the packaging material, as well as uses of PBS or its derivates as blends with PLA in extrusion coating, for improving adhesivity of the coating to the fibrous substrate and reduced raw edge penetration to the packaging material, especially penetration of hot coffee held in the drinking cup.
公开/授权文献:
- EP3708514B1 A HEAT-SEALED LIQUID CONTAINER 公开/授权日：2022-03-23