Method for improving the heat sealability of packaging material and method for manufacturing heat-sealed container or package |
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| 申请号 | US13695496 | 申请日 | 2011-04-27 | 公开(公告)号 | US09937681B2 | 公开(公告)日 | 2018-04-10 |
| 申请人 | Tapani Penttinen; Kimmo Nevalainen; Jurkka Kuusipalo; Tapio Koskinen; Sami Kotkamo; | 发明人 | Tapani Penttinen; Kimmo Nevalainen; Jurkka Kuusipalo; Tapio Koskinen; Sami Kotkamo; | ||||
| 摘要 | A method for improving the heat sealability of a packaging material and a method for manufacturing a heat-sealed container or package are described. The material can be polymer-coated packaging paper or cardboard, or a polymeric packaging film. The material includes a polymer layer that contains polyester, particularly polylactide, the heat sealability of which is improved by ultraviolet radiation. Polylactide is useful as such or when blended, for example, with other biodegradable polyester. The containers and packages thus manufactured include disposable drinking cups and cardboard carton and box packages. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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