公开(公告)号：US20210268783A1

公开(公告)日：2021-09-02

申请号：US17256058

申请日：2019-06-25

申请人： Stora Enso OYJ

发明人： Seppo Lampainen ,  Frank Peng ,  Atso Laakso ,  Ari-Pekka Määttänen

IPC分类号： B32B29/08 ,  D21H11/02 ,  B32B29/00 ,  B32B7/05 ,  D21H27/30 ,  D21H11/08 ,  D21H11/10 ,  D21H11/18 ,  D21H17/28 ,  D21H17/42 ,  D21H17/44 ,  D21H27/40

摘要： The invention relates to a lightweight linerboard for corrugated board with good strength properties and which reduces problems with washboarding in the thereof produced corrugated board. The linerboard of the invention comprises at least one ply comprising 20-80 wt % CTMP from wood fibers and 20-80 wt % chemical pulp, all percentages calculated on the total fiber weight of said first ply, wherein the CTMP exhibits a bulk of at least 2.5 cm3/g.

公开(公告)号：US20210221114A1

公开(公告)日：2021-07-22

申请号：US17256060

申请日：2019-06-25

申请人： Stora Enso OYJ

发明人： Seppo Lampainen ,  Frank Peng ,  Atso Laakso ,  Ari-Pekka Määttänen

IPC分类号： B32B29/00 ,  B32B7/12 ,  B32B29/08 ,  B65D65/40 ,  D21H11/02 ,  D21H11/18 ,  D21H11/10 ,  D21H21/18 ,  D21H17/28 ,  D21H17/45 ,  D21H17/68 ,  D21H17/00 ,  D21H27/40 ,  D21H27/10

摘要： The invention relates to a ply of a linerboard for corrugated board, which ply exhibits high strength properties and which enables the production of lightweight linerboards. The ply of the invention comprises 20-80 wt % CTMP from wood fibers and 80-20 wt % chemical pulp, calculated on the total fiber weight of said ply and strength additives chosen from the group of microfibrillated cellulose (MFC), anionic or cationic polymers and starchor combinations thereof. The ply exhibits a geometric SCT index of above 22 Nm/g and a density of below 680 kg/m3, preferably of below 650 kg/m3.

公开(公告)号：US20220074144A1

公开(公告)日：2022-03-10

申请号：US17417882

申请日：2020-01-23

申请人： Stora Enso OYJ

发明人： Frank Peng ,  Kaj Backfolk ,  Isto Heiskanen ,  Teija Laukala

IPC分类号： D21H11/18 ,  D21H17/67 ,  D21H19/52 ,  D21H23/28 ,  D21H23/48 ,  D21H23/50 ,  D21H27/10 ,  D21H27/32 ,  D21H27/38 ,  D21H27/40

摘要： The invention discloses a paperboard comprising a base ply, a top ply, and an intermediate layer disposed in-between the at least one base ply and the top ply. The intermediate layer comprises pigment and microfibrillated cellulose (MFC). The application of an intermediate layer comprising pigment and MFC in-between the base ply and the top ply gives rise to improved optical properties of the paperboard, even when using an uncoated top ply having a low grammage. This makes it possible to reduce the grammage of top ply and still obtain good optical properties.

公开(公告)号：US10145068B2

公开(公告)日：2018-12-04

申请号：US15307485

申请日：2015-04-29

申请人： Stora Enso OYJ

发明人： Hallgren Hans ,  Frank Peng ,  Anders Moberg ,  Hans Höglund ,  Gunilla Pettersson ,  Sven Norgren

IPC分类号： D21F3/02 ,  D21H11/08 ,  D21H11/10 ,  D21H17/26 ,  D21H17/29 ,  D21H21/18

摘要： The present invention relates to a process for producing at least one ply of a paper or board product wherein a web comprising mechanical and/or chemimechanical pulp and at least one dry strength additive is dried in a press drying process by subjecting the web to heat and an overpressure of above 40 kPa. The present invention also relates to a paper product, a paperboard product and a ply produced according to the process.

公开(公告)号：US11952718B2

公开(公告)日：2024-04-09

申请号：US17417882

申请日：2020-01-23

申请人： Stora Enso OYJ

发明人： Frank Peng ,  Kaj Backfolk ,  Isto Heiskanen ,  Teija Laukala

IPC分类号： D21H11/18 ,  D21H17/67 ,  D21H19/52 ,  D21H23/28 ,  D21H23/48 ,  D21H23/50 ,  D21H27/10 ,  D21H27/32 ,  D21H27/38 ,  D21H27/40

CPC分类号： D21H11/18 ,  D21H17/67 ,  D21H19/52 ,  D21H23/28 ,  D21H23/48 ,  D21H23/50 ,  D21H27/10 ,  D21H27/32 ,  D21H27/38 ,  D21H27/40

摘要： The invention discloses a paperboard comprising a base ply, a top ply, and an intermediate layer disposed in-between the at least one base ply and the top ply. The intermediate layer comprises pigment and microfibrillated cellulose (MFC). The application of an intermediate layer comprising pigment and MFC in-between the base ply and the top ply gives rise to improved optical properties of the paperboard, even when using an uncoated top ply having a low grammage This makes it possible to reduce the grammage of the top ply and still obtain good optical properties.

公开(公告)号：US11926128B2

公开(公告)日：2024-03-12

申请号：US17256058

申请日：2019-06-25

申请人： Stora Enso OYJ

发明人： Seppo Lampainen ,  Frank Peng ,  Atso Laakso ,  Ari-Pekka Määttänen

IPC分类号： B32B29/08 ,  B32B7/05 ,  B32B29/00 ,  D21H11/02 ,  D21H11/04 ,  D21H11/08 ,  D21H11/10 ,  D21H11/18 ,  D21H17/28 ,  D21H17/42 ,  D21H17/44 ,  D21H27/30 ,  D21H27/40

CPC分类号： B32B29/08 ,  B32B7/05 ,  B32B29/005 ,  D21H1/02 ,  D21H11/02 ,  D21H11/04 ,  D21H11/08 ,  D21H11/10 ,  D21H11/18 ,  D21H17/28 ,  D21H17/42 ,  D21H17/44 ,  D21H27/40 ,  B32B2250/26 ,  B32B2307/546 ,  B32B2307/718 ,  B32B2307/72

摘要： The invention relates to a lightweight linerboard for corrugated board with good strength properties and which reduces problems with washboarding in the thereof produced corrugated board. The linerboard of the invention comprises at least one ply comprising 20-80 wt % CTMP from wood fibers and 20-80 wt % chemical pulp, all percentages calculated on the total fiber weight of said first ply, wherein the CTMP exhibits a bulk of at least 2.5 cm3/g.

公开(公告)号：US12053964B2

公开(公告)日：2024-08-06

申请号：US17256060

申请日：2019-06-25

申请人： Stora Enso OYJ

发明人： Seppo Lampainen ,  Frank Peng ,  Atso Laakso ,  Ari-Pekka Määttänen

IPC分类号： B32B29/00 ,  B32B7/12 ,  B32B29/08 ,  B65D65/40 ,  D21H11/02 ,  D21H11/10 ,  D21H11/18 ,  D21H17/00 ,  D21H17/28 ,  D21H17/45 ,  D21H17/68 ,  D21H21/18 ,  D21H27/10 ,  D21H27/40

CPC分类号： B32B29/005 ,  B32B7/12 ,  B32B29/08 ,  B65D65/403 ,  D21H11/02 ,  D21H11/10 ,  D21H11/18 ,  D21H17/28 ,  D21H17/45 ,  D21H17/68 ,  D21H17/74 ,  D21H21/18 ,  D21H27/10 ,  D21H27/40 ,  B32B2250/03 ,  B32B2250/26 ,  B32B2307/546 ,  B32B2307/718 ,  B32B2307/72 ,  B32B2553/00

摘要： The invention relates to a ply of a linerboard for corrugated board, which ply exhibits high strength properties and which enables the production of lightweight linerboards. The ply of the invention comprises 20-80 wt % CTMP from wood fibers and 80-20 wt % chemical pulp, calculated on the total fiber weight of said ply and strength additives chosen from the group of microfibrillated cellulose (MFC), anionic or cationic polymers and starch or combinations thereof. The ply exhibits a geometric SCT index of above 22 Nm/g and a density of below 680 kg/m3, preferably of below 650 kg/m3.

公开(公告)号：US20220178082A1

公开(公告)日：2022-06-09

申请号：US17429987

申请日：2020-02-12

申请人： Stora Enso OYJ

发明人： Sohrab Kazemahvazi ,  Ulla Jansson ,  Irene Wedin ,  Frank Peng

IPC分类号： D21J3/00 ,  D21H11/08 ,  D21H11/12 ,  D21H11/20 ,  D21J1/16 ,  B65D65/38

摘要： The invention discloses a method for producing a three dimensional molded product from cellulose fibers, comprising the steps of: providing a cellulose fiber composition comprising 1-30 wt % lignin, said cellulose fiber composition further having a solid content between 0.1-95%; providing a forming tool having a three dimensional shape including a forming surface, and bringing said forming surface into contact with the cellulose fiber composition; and press drying the cellulose fiber composition contacted by the forming tool at temperatures>200° C. to a dry content of at least 70%. The invention also relates to a three dimensional fiber based product obtainable by means of said method.