公开(公告)号：US10857753B2

公开(公告)日：2020-12-08

申请号：US15889250

申请日：2018-02-06

Applicant: STORA ENSO OYJ

Inventor： Tapani Penttinen ,  Kimmo Nevalainen ,  Jurkka Kuusipalo ,  Tapio Koskinen ,  Sami Kotkamo

IPC: A61F13/15 ,  B05D3/00 ,  B29C53/00 ,  B29C65/00 ,  B31C11/04 ,  B31C7/00 ,  B32B37/00 ,  B32B27/00 ,  B65C9/25 ,  C08J5/00 ,  C08J7/18 ,  G21H5/00 ,  B31B50/64 ,  B29C65/02 ,  B29C71/04 ,  B32B9/02 ,  B32B27/12 ,  C08J5/12 ,  C08J7/12 ,  C09J5/06 ,  B32B7/12 ,  B32B27/08 ,  B32B27/10 ,  B32B27/36 ,  B31B50/74 ,  B29C65/10 ,  B29C65/18 ,  B29C35/08 ,  B29K67/00

Abstract: 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.

公开(公告)号：US10214316B2

公开(公告)日：2019-02-26

申请号：US14438180

申请日：2013-10-23

Applicant: STORA ENSO OYJ

Inventor： Kimmo Nevalainen ,  Ville Ribu ,  Jurkka Kuusipalo ,  Sami Kotkamo

IPC: B65D5/56 ,  B05D1/26 ,  B05D7/00 ,  B32B27/36 ,  D21H19/28 ,  D21H19/80 ,  B29C47/02 ,  B29C47/06 ,  B29C47/92 ,  B32B7/02 ,  B32B27/08 ,  B32B27/12 ,  B32B27/30 ,  B29C47/00 ,  C08L101/16

Abstract: A biodegradable packaging material, a method of manufacturing the same, as well as products made of the material wherein a multilayer coating coextruded onto a fibrous substrate the multilayer coating comprising innermost and outermost layers of a blend comprising 20-95 wt-% of a higher melt index polylactide and 5-80 wt-% of another biodegradable polymer such as polybutylene succinate, and a middle layer containing a lower melt index polylactide alone. The goal is to increase machine speed in coextrusion while maintaining good adhesiveness to the substrate and good heat-sealability of the coating. The products include disposable drinking cups and board trays, as well as sealed carton packages for solids and liquids.

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。

公开(公告)号：US20150284133A1

公开(公告)日：2015-10-08

申请号：US14438180

申请日：2013-10-23

Applicant: STORA ENSO OYJ

Inventor： Kimmo Nevalainen ,  Ville Ribu ,  Jurkka Kuusipalo ,  Sami Kotkamo

IPC: B65D5/56 ,  B05D7/00 ,  B05D1/26

CPC classification number: B65D5/563 ,  B05D1/265 ,  B05D7/58 ,  B29C47/0004 ,  B29C47/025 ,  B29C47/065 ,  B29C47/92 ,  B32B7/02 ,  B32B27/08 ,  B32B27/12 ,  B32B27/308 ,  B32B27/36 ,  B32B2270/00 ,  B32B2307/7163 ,  B32B2307/726 ,  B32B2439/02 ,  B32B2439/70 ,  C08L101/16 ,  D21H19/28 ,  D21H19/80 ,  Y10T428/24942

Abstract: A biodegradable packaging material, a method of manufacturing the same, as well as products made of the material wherein a multilayer coating coextruded onto a fibrous substrate the multilayer coating comprising innermost and outermost layers of a blend comprising 20-95 wt-% of a higher melt index polylactide and 5-80 wt-% of another biodegradable polymer such as polybutylene succinate, and a middle layer containing a lower melt index polylactide alone. The goal is to increase machine speed in coextrusion while maintaining good adhesiveness to the substrate and good heat-sealability of the coating. The products include disposable drinking cups and board trays, as well as sealed carton packages for solids and liquids.

Abstract translation: 可生物降解的包装材料，其制造方法以及由该材料制成的产品，其中将多层涂层共挤出到纤维基材上，该多层涂层包含包含20-95wt％更高的共混物的最内层和最外层 熔融指数聚丙交酯和5-80重量％的另一种可生物降解的聚合物如聚丁二酸丁二醇酯，以及仅含有较低熔体指数的聚丙交酯的中间层。 目的是提高共挤出机的机器速度，同时保持对基材的良好的粘附性和涂层的良好的热封性。 产品包括一次性饮用杯子和纸盘，以及用于固体和液体的密封纸箱包装。