公开(公告)号：WO2022107007A1

公开(公告)日：2022-05-27

申请号：PCT/IB2021/060639

申请日：2021-11-17

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  LYYTIKÄINEN, Katja ,  KANKKUNEN, Jukka

IPC: D21H19/08 ,  B32B7/02 ,  B32B29/00 ,  D21H19/82 ,  B32B15/04 ,  B32B15/20 ,  C08J5/18 ,  C08L1/02 ,  D21H19/00

Abstract: The present invention relates to a barrier film for a paper or paperboard-based packaging material, said barrier film comprising: a substrate; a vacuum coating layer having a thickness in the range of 1-500 nm disposed on the substrate; and a protective coating layer comprising a crosslinked water-soluble polymer disposed on the vacuum coating layer. The present invention further relates to a paper or paperboard based packaging material and containers comprising the barrier film, and to a method for manufacturing the barrier film.

公开(公告)号：WO2021209917A1

公开(公告)日：2021-10-21

申请号：PCT/IB2021/053071

申请日：2021-04-14

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  KAUPPI, Anna ,  KANKKUNEN, Jukka

IPC: C08J5/18 ,  B32B29/02 ,  B82Y30/00 ,  C08L1/02 ,  D21F1/00 ,  D21F11/04 ,  D21H11/18 ,  D21H27/30

Abstract: The present invention relates to a method for manufacturing a multilayer film comprising highly refined cellulose fibers, the method comprising the steps of: a) forming a first wet web by applying a first pulp suspension comprising highly refined cellulose fibers on a first wire; b) partially dewatering the first wet web to obtain a first partially dewatered web; c) forming a second wet web by applying a second pulp suspension comprising highly refined cellulose fibers on a second wire; d) partially dewatering the second wet web to obtain a second partially dewatered web; e) joining the first and second partially dewatered web to obtain a multilayer web; and f) further dewatering, and optionally drying, the multilayer web to obtain a multilayer film comprising highly refined cellulose fibers.

公开(公告)号：WO2019123290A1

公开(公告)日：2019-06-27

申请号：PCT/IB2018/060302

申请日：2018-12-19

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK, Kaj ,  HEISKANEN, Isto ,  SAUKKONEN, Esa ,  KANKKUNEN, Jukka

IPC: B32B27/12 ,  B29C65/02 ,  B32B27/08 ,  B32B27/32 ,  C08J5/18 ,  D21H11/18

Abstract: The present invention is directed to a packaging material free from aluminium in the form of a continuous foil or film, comprising a layer of microfibrillated cellulose (MFC), wherein the layer comprising MFC has been laminated or coated on at least one side with a heat-sealable material. The MFC layer contains at least 60% by weight of microfibrillated cellulose. The present invention is also directed to a method for induction sealing, wherein a packaging material to be heat-sealed by induction is placed against an induction heating surface.

公开(公告)号：WO2017163176A1

公开(公告)日：2017-09-28

申请号：PCT/IB2017/051623

申请日：2017-03-21

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  LAMPAINEN, Seppo ,  KANKKUNEN, Jukka

IPC: D21H27/40 ,  B32B29/08 ,  D21H11/18 ,  D21H17/25 ,  D21H21/16 ,  D21H21/18 ,  D21H27/10 ,  D21H27/38

Abstract: A corrugated fiberboard comprising cellulosic fibers, wherein said corrugated fiberboard has at least one of a geometrical tensile index in the range of from 32 to 65 Nm/g, a fracture toughness index in the range of from 4 to 24 Jm/kg, and a ring crush index in the range of from 5 to 10 Nm/g5 measured at relative humidity of 85% RH; wherein the cellulosic fibers comprises a mixture of less refined fibers having a Schopper-Riegler (SR) value in the range of 15 to 28 and microfibrillated cellulose fibers, wherein mixture comprises said microfibrillated cellulose in a range of from 1% to 5% by weight of the dry content of the cellulosic fibers.

Abstract translation: 包含纤维素纤维的瓦楞纤维板，其中所述瓦楞纤维板具有32-65Nm / g范围内的几何拉伸指数，4的断裂韧度指数 至24Jm / kg，并且在85％RH的相对湿度下测得的环破碎指数在5至10Nm / g5的范围内; 其中所述纤维素纤维包含Schopper-Riegler（SR）值为15至28的较少精制纤维与微纤化纤维素纤维的混合物，其中所述微纤化纤维素的混合物包含1重量％至5重量％ 的纤维素纤维的干含量。

公开(公告)号：WO2023047216A1

公开(公告)日：2023-03-30

申请号：PCT/IB2022/058163

申请日：2022-08-31

Applicant: STORA ENSO OYJ

Inventor： NYLÉN, Otto ,  HEISKANEN, Isto ,  KANKKUNEN, Jukka ,  BACKFOLK, Kaj

IPC: C08J5/18 ,  B82Y30/00 ,  C08L1/02 ,  D21F3/02 ,  D21H11/18

Abstract: The present invention relates to a method for producing a film comprising microfibrillated cellulose, which comprises: providing a suspension comprising 30-100 weight-% microfibrillated cellulose based on total dry weight; forming a wet web of said suspension by casting on a support being a non-porous support, paper or paperboard; wet-pressing said wet web to form a dewatered web, which comprises applying a press fabric into direct contact with said wet web and conducting said wet web, arranged between said press fabric and said non-porous support, through a pressing equipment; smoothening said dewatered web by applying at least one smoothing press to said dewatered web arranged on said non-porous support so as to form a smoothened web, wherein a pressure of 0.1-25 MPa is applied in each smoothing press, wherein said dewatered web has a dry content of 20-60% by weight when applying said smoothing press(es), and drying said smoothened web to form said film. The invention further relates to a film.

公开(公告)号：WO2022189958A1

公开(公告)日：2022-09-15

申请号：PCT/IB2022/052037

申请日：2022-03-08

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  LYYTIKÄINEN, Katja ,  MOBERG, Anders ,  KANKKUNEN, Jukka

IPC: D21H11/18 ,  C08J5/18 ,  C09D101/02 ,  D21H11/00 ,  D21H23/28 ,  B32B29/00 ,  D21F1/66

Abstract: The present invention relates to a method for manufacturing a barrier film comprising highly refined cellulose, said method comprising: a) providing a highly refined cellulose pulp suspension comprising highly refined cellulose pulp having a Schopper-Riegler (SR) number in the range of 40-98 as determined by standard ISO 5267-1 and a content of fibers having a length >0.2 mm of at least 7 million fibers per gram based on dry weight, at a consistency in the range of 0.1-1.5 wt%; b) forming a web of the highly refined cellulose pulp suspension and dewatering the web in a paper machine former on a wire to a consistency of at least 5 wt% to obtain a substrate web, wherein the white water removed from the pulp contains 2-25 wt%, preferably 5-20 wt% and more preferably at least 5-15 wt% of the solids of the highly refined cellulose pulp suspension provided in step a); c) optionally further dewatering and optionally drying the substrate web; d) coating the optionally further dewatered and optionally dried substrate web with a coating suspension comprising cellulose fines or microfibrillated cellulose to obtain a coated web; and e) dewatering and/or drying the coated web to obtain a barrier film comprising highly refined cellulose.

公开(公告)号：WO2022049482A1

公开(公告)日：2022-03-10

申请号：PCT/IB2021/057940

申请日：2021-08-31

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  KAUPPI, Anna ,  LYYTIKÄINEN, Katja ,  KANKKUNEN, Jukka ,  KORVENNIEMI, Juha

IPC: D21H11/18 ,  B32B29/02 ,  D21F11/08 ,  D21H27/30

Abstract: The present invention relates to a method for manufacturing a multilayer film comprising microfibrillated cellulose (MFC) in a paper-making machine, the method comprising the steps of: a) forming a bottom web layer by applying a first pulp suspension comprising at least 50% by dry weight of cellulose based fibrous material having an SR (Schopper-Riegler) value in the range of 18-75 on a bottom web wire; b) forming or applying an intermediate web layer formed from a second pulp suspension comprising at least 50% by dry weight of MFC having an SR value in the range of 80-100 on the bottom web layer; c) applying a top web layer formed from a third pulp suspension comprising at least 50% by dry weight of cellulose based fibrous material having an SR (Schopper-Riegler) value in the range of 18-75 on the intermediate web layer to form a multilayer web; and d) dewatering, and optionally drying, the formed multilayer web to obtain a multilayer film comprising MFC.

公开(公告)号：WO2021260608A1

公开(公告)日：2021-12-30

申请号：PCT/IB2021/055592

申请日：2021-06-24

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  KANKKUNEN, Jukka ,  KAUPPI, Anna ,  HJERPE, Mikael ,  KORVENNIEMI, Juha

IPC: D21H11/18 ,  B82Y30/00 ,  C08J5/18 ,  D21F3/02

Abstract: The present invention relates to a method for dewatering a web comprising microfibrillated cellulose, wherein the method comprises the steps of: providing a suspension comprising between 50 wt-% to 100 wt-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension on a support wherein said web has a dry content of 1-25% by weight, applying a dewatering felt into direct contact with the fibrous web, conducting said fibrous web, arranged between said dewatering felt and said support, through at least one shoe press equipment, drying the dewatered web to form a film which film has an Oxygen Transmission Rate (OTR) value (23°C, 50% RH) below 100 cc/m2/24h according to ASTM D-3985.

公开(公告)号：WO2018185611A1

公开(公告)日：2018-10-11

申请号：PCT/IB2018/052132

申请日：2018-03-28

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK, Kaj ,  HEISKANEN, Isto ,  SAUKKONEN, Esa ,  KANKKUNEN, Jukka ,  RIBU, Ville ,  NEVALAINEN, Kimmo

IPC: D21H11/18 ,  B32B15/04 ,  B32B27/10 ,  B32B27/32 ,  B32B29/00 ,  C08J5/18 ,  D21H19/02

Abstract: The present invention is directed to a packaging material comprising a layer of microfibrillated cellulose (MFC) and an aluminium layer having a thickness of 0.1-20 µm, wherein the layer comprising MFC and/or the aluminium layer has been laminated or extrusion coated on at least one side with a thermoplastic polymer and wherein the amount of aluminium is sufficient to make the packaging material heat sealable by induction. The MFC layer contains at least 60% by weight of microfibrillated cellulose.

公开(公告)号：WO2017187350A2

公开(公告)日：2017-11-02

申请号：PCT/IB2017/052390

申请日：2017-04-26

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK, Kaj ,  HEISKANEN, Isto ,  SAUKKONEN, Esa ,  KANKKUNEN, Jukka

IPC: D21H19/10

Abstract: The present invention is directed to a film comprising a base film which has been coated on at least one side with a coating that enhances gas and/or moisture barrier properties, wherein the base film comprises a fiber material and at least 60% by weight of said fiber material is microfibrillated cellulose, and the thickness of the coating is from 0.05 to 20 µm. The invention is also directed to products using said film. Such products are in particular packages suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The film is also useful for other purposes, such as in the manufacture of balloons.

Abstract translation: 本发明涉及一种包含基膜的膜，所述基膜在至少一侧上涂覆有增强气体和/或湿气阻隔性的涂层，其中所述基膜包含纤维材料 并且所述纤维材料的至少60重量％为微纤化纤维素，并且所述涂层的厚度为0.05至20微米。 本发明还涉及使用所述膜的产品。 这些产品特别适用于需要在受控或修改的气氛中包装的敏感物体的包装。 这种薄膜也可用于其他用途，例如制造气球。