公开(公告)号：US10414105B2

公开(公告)日：2019-09-17

申请号：US15113608

申请日：2015-01-22

Applicant: Stora Enso OYJ

Inventor： Jari Räsänen ,  Outi Kylliäinen ,  Kimmo Nevalainen ,  Ville Ribu ,  Ari Rosling ,  Mohammad Khajeheian ,  Ella Lindström

IPC: B29C65/00 ,  B29C71/04 ,  B32B27/10 ,  B29C35/08 ,  B32B27/20 ,  B32B27/36 ,  D21H25/06 ,  D21H27/10 ,  D21H19/28 ,  D21H19/62 ,  B29C65/02 ,  B29C35/10 ,  B29K67/00 ,  B29L31/00

Abstract: The invention relates to use of polylactide (PLA) as an extruded polymer coating on paper or board intended for the production of containers and packages, which are heated in a stove or microwave oven. According to the invention a polyfunctional cross-linking agent, such as trialkyl isocyanurate (TAIC), is blended with PLA, and the extruded coating layer is subjected to cross-linking electron beam (EB) radiation. PLA may be used as such or blended with another biodegradable polyester such as polybutylene succinate (PBS). EB radiation has been found to improve adhesion of the coating to the paper or board substrate, heat-scalability of the coating, and heat-resistance of the finished containers and packages.

公开(公告)号：US20170008227A1

公开(公告)日：2017-01-12

申请号：US15113608

申请日：2015-01-22

Applicant: STORA ENSO OYJ

Inventor： Jari Räsänen ,  Outi Kylliäinen ,  Kimmo Nevalainen ,  Ville Ribu ,  Ari Rosling ,  Mohammad Khajeheian ,  Ella Lindström

IPC: B29C65/00 ,  B29C35/08 ,  B29C71/04

CPC classification number: B29C66/73121 ,  B29C35/0805 ,  B29C35/0866 ,  B29C35/10 ,  B29C65/02 ,  B29C66/028 ,  B29C66/4322 ,  B29C66/71 ,  B29C66/72328 ,  B29C66/851 ,  B29C71/04 ,  B29C2035/0827 ,  B29C2035/0877 ,  B29K2067/00 ,  B29K2067/003 ,  B29K2067/046 ,  B29L2031/7132 ,  B32B27/10 ,  B32B27/20 ,  B32B27/36 ,  B32B2270/00 ,  B32B2307/31 ,  B32B2307/7163 ,  B32B2439/70 ,  D21H19/28 ,  D21H19/62 ,  D21H25/06 ,  D21H27/10

Abstract: The invention relates to use of polylactide (PLA) as an extruded polymer coating on paper or board intended for the production of containers and packages, which are heated in a stove or microwave oven. According to the invention a polyfunctional cross-linking agent, such as trialkyl isocyanureate (TAIC), is blended with PLA, and the extruded coating layer is subjected to cross-linking electron beam (EB) radiation. PLA may be used as such or blended with another biodegradable polyester such as polybutylene succinate (PBS). EB radiation has been found to improve adhesion of the coating to the paper or board substrate, heat-scalability of the coating, and heat-resistance of the finished containers and packages.

Abstract translation: 本发明涉及聚丙交酯（PLA）作为挤出聚合物涂层在纸或板上的用途，用于生产容器和包装，其在炉子或微波炉中加热。 根据本发明，将多官能交联剂如三烷基异氰脲酸酯（TAIC）与PLA混合，并将挤出的涂层进行交联电子束（EB）辐射。 PLA可以原样使用或与另一种可生物降解的聚酯如聚丁二酸丁二醇酯（PBS）混合使用。 已经发现EB辐射改善了涂层对纸或基板的粘附性，涂层的热可伸缩性以及成品容器和包装的耐热性。

公开(公告)号：US20170008226A1

公开(公告)日：2017-01-12

申请号：US15113560

申请日：2015-01-22

Applicant: STORA ENSO OYJ

Inventor： Kimmo Nevalainen ,  Ville Ribu ,  Jari Räsänen ,  Outi Kylliainen ,  Ari Rosling ,  Mohammad Khajeheian ,  Jurkka Kuusipalo ,  Sami Kotkamo ,  Mikko Touminen

IPC: B29C65/00 ,  B29C35/08 ,  B29C71/04

CPC classification number: B29C66/73121 ,  B29C35/0805 ,  B29C65/02 ,  B29C66/028 ,  B29C66/4322 ,  B29C66/71 ,  B29C66/72328 ,  B29C66/851 ,  B29C71/04 ,  B29C2035/0827 ,  B29C2035/0877 ,  B29K2067/00 ,  B29K2067/003 ,  B29K2067/046 ,  B29L2031/7132 ,  B32B27/10 ,  B32B27/36 ,  B32B2270/00 ,  B32B2307/31 ,  B32B2307/7163 ,  B32B2307/7244 ,  B32B2307/7246 ,  B32B2439/70 ,  D21H19/28 ,  D21H25/04 ,  D21H27/10

Abstract: The invention relates to methods for lowering the melt viscosity and thereby improving heat-sealability of a polyester. The invention also relates to a method for manufacturing a heat-sealed container or package from fibrous- based, polyester-coated packaging material, and a method for heat-sealing polyester. The solution according to the invention is subjecting polyester to electron beam (EB) radiation. The lowered melt viscosity allows a lower heat-sealing temperature, and permits sealing of polyester to an uncoated fibrous surface. The preferred polyester for the invention is polylactide, as such or as blended with another polyester.

Abstract translation: 本发明涉及降低熔体粘度并提高聚酯热封性的方法。 本发明还涉及一种由基于纤维的聚酯涂覆的包装材料制造热密封容器或包装的方法，以及一种热封聚酯的方法。 根据本发明的溶液是对聚酯进行电子束（EB）辐射。 降低的熔融粘度允许较低的热封温度，并且允许将聚酯密封到未涂覆的纤维表面。 本发明优选的聚酯是聚丙交酯，或与另一种聚酯共混。