Kimmo Nevalainen;Jurkka Kuusipalo;Sami Kotkamo;Tapani Penttinen;Tapio Koskinen
发明人:
Tapani Penttinen,Kimmo Nevalainen,Jurkka Kuusipalo,Tapio Koskinen,Sami Kotkamo
申请号：
US13695496
公开号：
US09937681B2
申请日:
2011.04.27
申请国别(地区):
US
年份:
2018
代理人:
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.
