公开(公告)号：US20170008264A1

公开(公告)日：2017-01-12

申请号：US15119482

申请日：2015-02-19

Applicant: STORA ENSO OYJ

Inventor： Kimmo Nevalainen ,  Jari Räsänen ,  Ville Ribu

IPC: B32B27/32 ,  B29C47/06 ,  B65D1/26 ,  B32B27/10 ,  B32B37/15 ,  B65D65/40 ,  B29C47/02 ,  B32B7/12

CPC classification number: B32B27/32 ,  B29C47/0021 ,  B29C47/0047 ,  B29C47/0064 ,  B29C47/025 ,  B29C47/065 ,  B29K2023/0625 ,  B29K2023/0633 ,  B29K2023/065 ,  B29K2995/0017 ,  B29L2009/005 ,  B29L2031/7132 ,  B32B7/12 ,  B32B27/10 ,  B32B37/15 ,  B32B2255/12 ,  B32B2255/26 ,  B32B2270/00 ,  B32B2307/31 ,  B32B2307/7244 ,  B32B2307/7246 ,  B32B2323/043 ,  B32B2323/046 ,  B32B2439/00 ,  B32B2439/40 ,  B65D1/265 ,  B65D65/40 ,  C08L23/06

Abstract: The invention relates to a polymer-coated packaging material, a method of manufacturing the same, and products, such as a disposable drinking cup, made from the material. The packaging material comprises a fibrous base (1) of paper or board and an extruded polymer layer (2) containing a blend of (i) 0 to 25 wt-% of a branched low-density polyethylene (LDPE)with a lower melt viscosity and (ii) 75 to 90 wt-% of a linear low-density polyethylene (LLDPE) with a higher melt viscosity. The packaging material of the invention comprises multilayer coatings, e.g. an adhesive innermost and a heat-sealable outermost layer (2, 4) of said blend and a vapour barrier middle layer (3) of at most 90 wt-% of high density polyethylene (HDPE). The layers (2, 3, 4) are brought and adhered to the fibrous base (1) by coextrusion. To maximize renewability of the materials HDPE and LLDPE as used for the structure are of biologic origin.

Abstract translation: 本发明涉及一种聚合物涂覆的包装材料，其制造方法以及由该材料制成的产品，例如一次性饮用杯。 包装材料包括纸或纸板的纤维基材（1）和挤出的聚合物层（2），其包含（i）0至25重量％的具有较低熔体粘度的支化低密度聚乙烯（LDPE）的共混物 和（ii）75至90重量％的具有较高熔体粘度的线性低密度聚乙烯（LLDPE）。 本发明的包装材料包括多层涂层，例如 所述共混物的最内层和最热可密封的最外层（2,4）和至少90重量％的高密度聚乙烯（HDPE）的阻气中间层（3）。 层（2,3,4）通过共挤出而附着在纤维基体（1）上。 为了最大化材料的可再生性，用于结构的HDPE和LLDPE具有生物来源。

公开(公告)号：US11459432B2

公开(公告)日：2022-10-04

申请号：US16461897

申请日：2017-11-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Esa Saukkonen ,  Ville Ribu ,  Katja Lyytikäinen

IPC: C08J5/18 ,  D21H11/18 ,  D21H25/04 ,  D21H19/34 ,  D21H13/00 ,  D21H21/18 ,  D21H19/52 ,  D21H21/16 ,  D21H17/28

Abstract: Method for making a film that comprises microfibrillated cellulose, wherein the film has low OTR values and especially suitable for a tropical environment. The method comprising the steps of providing a suspension comprising microfibrillated cellulose (MFC), forming a film from said suspension, wherein the film having a solid content above 40%, preferably above 50%, treating the film with flame or plasma treatment, such that a surface activation takes place on the film, and cooling the film, wherein the surface of the film having a decreased OTR value and a high moisture resistance.

公开(公告)号：US20220298264A1

公开(公告)日：2022-09-22

申请号：US17299986

申请日：2019-12-04

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Mari Hiltunen ,  Nina Ruohoniemi ,  Titta Lammi ,  Ville Ribu ,  Tim Lindfors ,  Jari Räsänen

IPC: C08B1/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08B31/00 ,  C08B30/10 ,  B29C64/118

Abstract: The present invention relates to a web of fibrous cellulosic material derived from wood pulp, said web being suitable for three-dimensional moulding to form a packaging product, wherein the web comprises >40 wt % of soft wood chemical pulp and at least one strength enhancement agent, wherein the web has a grammage less than 400 g/m2, and wherein the cellulose fibers of said soft wood chemical pulp comprise a fiber curl of >9%.

公开(公告)号：US11084261B2

公开(公告)日：2021-08-10

申请号：US16087207

申请日：2017-03-20

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Esa Saukkonen ,  Ville Ribu

IPC: B32B29/00 ,  B32B27/32 ,  B32B27/08 ,  B32B5/02 ,  B32B7/12 ,  B32B29/08 ,  B32B27/12 ,  B32B27/34 ,  B32B27/10 ,  B32B37/15 ,  D21H11/18 ,  D21H21/16 ,  C08J5/18 ,  B65D65/40 ,  B29C48/21 ,  B29C48/22 ,  B29C48/08 ,  B32B27/30 ,  B29C48/00 ,  B29C48/154 ,  B29K23/00

Abstract: The invention concerns a fibrous-based oxygen barrier film, which comprises (i) a microfibrillated cellulose (MFC) film, (ii) an oxygen barrier polymer layer, (iii) an optional tie layer, and (iv) an outermost polyolefin layer. The invention even concerns a laminate, in which said multilayer film is combined with a fibrous paper or board base by means of an intermediate polyethylene layer. The oxygen barrier polymerlayer, which preferably is EVOH, and the polyolefin layer are brought by coextrusion onto the MFC film. The film and the laminate according to the invention aim at an improved oxygen barrier in high humidity conditions and have use in oxygen-sensitive food packaging.

公开(公告)号：US20190276621A1

公开(公告)日：2019-09-12

申请号：US16461897

申请日：2017-11-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Esa Saukkonen ,  Ville Ribu ,  Katja Lyytikäinen

IPC: C08J5/18 ,  D21H11/18 ,  D21H25/04

Abstract: Method for making a film that comprises microfibrillated cellulose, wherein the film has low OTR values and especially suitable for a tropical environment. The method comprising the steps of providing a suspension comprising microfibrillated cellulose (MFC), forming a film from said suspension, wherein the film having a solid content above 40%, preferably above 50%, treating the film with flame or plasma treatment, such that a surface activation takes place on the film, and cooling the film, wherein the surface of the film having a decreased OTR value and a high moisture resistance.

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：US20170028701A1

公开(公告)日：2017-02-02

申请号：US15304172

申请日：2015-04-14

Applicant: STORA ENSO OYJ

Inventor： Kimmo Nevalainen ,  Ville Ribu

IPC: B32B37/15 ,  B32B27/08 ,  B32B7/02 ,  B65D81/34 ,  B32B27/36 ,  B32B37/20 ,  B32B27/10 ,  B32B7/12 ,  B32B27/34

CPC classification number: B32B37/153 ,  B29C48/0021 ,  B29C48/156 ,  B29C48/21 ,  B29C48/914 ,  B29K2077/00 ,  B29K2105/0097 ,  B29K2667/003 ,  B29L2007/008 ,  B29L2009/00 ,  B29L2009/005 ,  B29L2031/712 ,  B32B7/02 ,  B32B7/12 ,  B32B27/08 ,  B32B27/10 ,  B32B27/34 ,  B32B27/36 ,  B32B37/14 ,  B32B37/203 ,  B32B2270/00 ,  B32B2307/306 ,  B32B2307/718 ,  B32B2307/7242 ,  B32B2307/7244 ,  B32B2317/12 ,  B32B2367/00 ,  B32B2377/00 ,  B32B2439/70 ,  B65D81/343 ,  B65D81/3453

Abstract: The invention covers a method of producing a heat-resistant polymer-coated oven board, the resulting oven board, a food tray and a food package, which comprise such board and withstand heating in a range or microwave oven. According to the invention the coated oven board (1) is made by adhering a premade heat-resisting film (4) comprising polyethylene terephthalate (PET) or its derivate, such as glycol-modified PET known as PETG, to a board base (2) by extrusion lamination, in which an adhesive layer (3) comprising polyamide (PA) is extruded between the heat-resisting film and the board base. To improve the strength and barrier properties, the film (4) may be an extruded multilayer film and/or the film may be stretch-orientated to bring about crystallization in PET.

Abstract translation: 本发明涵盖了一种制造耐热聚合物涂覆的烘烤板，所得到的烤箱板，食品托盘和食品包装件的方法，其包括这种板材并且在一定范围或微波炉中耐受加热。 根据本发明，涂覆的烘烤板（1）通过将包含聚对苯二甲酸乙二醇酯（PET）或其衍生物（例如称为PETG的二醇改性的PET）的预制耐热膜（4）粘合到板基材（2） ），其中将包含聚酰胺（PA）的粘合剂层（3）挤出在耐热膜和基板之间。 为了提高强度和阻隔性能，膜（4）可以是挤出的多层膜，和/或可以将膜拉伸取向以在PET中进行结晶。

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。

公开(公告)号：US20230339646A1

公开(公告)日：2023-10-26

申请号：US17997842

申请日：2021-05-04

Applicant: Stora Enso OYJ

Inventor： Ville Ribu ,  Nina Miikki ,  Mari Hiltunen ,  Juha Varis ,  Panu Tanninen ,  Mika Kainusalmi

IPC: B65D1/44 ,  B65D1/34 ,  B65D81/34 ,  B31B50/59 ,  B31B50/88

CPC classification number: B65D1/44 ,  B65D1/34 ,  B65D81/3453 ,  B31B50/592 ,  B31B50/88 ,  B31B2110/35

Abstract: The present invention relates to a container for liquid containing food products, manufactured by press forming of a polymer coated fiber based substrate, said container comprising a bottom portion, a sidewall portion and a top flange portion, wherein said press forming has resulted in the formation a plurality of creases extending in a direction from the bottom portion to the top flange portion and further across the top flange portion. The container comprises an indentation pattern (130, 140, 150, 160, 170, 180, 190a, 190b, 200) formed at a creased inner surface of said sidewall portion and/or at a creased top surface of said top flange portion, said indentation pattern preventing migration of liquid from a liquid containing food product in the container along said creases. The invention relates also to a method for manufacturing such container.