公开(公告)号：WO2020003129A1

公开(公告)日：2020-01-02

申请号：PCT/IB2019/055350

申请日：2019-06-25

Applicant: STORA ENSO OYJ

Inventor： LAMPAINEN, Seppo ,  PENG, Frank ,  LAAKSO, Atso ,  MÄÄTTÄNEN, Ari-Pekka

IPC: B32B29/08 ,  B65D65/40 ,  D21H11/02 ,  D21H11/08 ,  D21H11/10 ,  D21H27/10 ,  D21H27/30 ,  D21H27/40 ,  D21H11/18 ,  D21H17/28 ,  D21H17/42 ,  D21H17/44 ,  D21H21/18

Abstract: 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/m 3 , preferably of below 650 kg/m 3.

公开(公告)号：WO2004007834A1

公开(公告)日：2004-01-22

申请号：PCT/FI2003/000564

申请日：2003-07-14

Applicant: STORA ENSO OYJ ,  MÄÄTTÄNEN, Ari-Pekka ,  SONNI, Hannu

Inventor： MÄÄTTÄNEN, Ari-Pekka ,  SONNI, Hannu

IPC: D21C3/24

CPC classification number: D21C7/14 ,  D21C3/24 ,  D21C7/08 ,  D21C9/02

Abstract: The invention relates to a continuous method for cooking cellulose-based pulp and to a pulp digester suitable for the method. In continuously operating cooking, the fi­brous pulp moves downwards in a vertical cooking vessel (1), whose upper part forms a cooking zone (2) and lower part forms a pulp counter-current washing zone (3) for cooked pulp, and is removed as cooked pulp from the lower end of the vessel to an exhaust pipe (9). In the invention, the liquid phase in the washing zone of the cooking vessel is separated and transferred as wash liquor to a location higher than the separation point (10) and also to the lower part of the cooking vessel to form di­luting liquor reducing pulp consistency. The invention has the special purpose of reducing fibre agglomeration and scuffing, which damages fibres and deteriorates the strength properties of cooked pulp removed from the vessel.

Abstract translation: 本发明涉及一种用于烹饪纤维素基纸浆和适用于该方法的纸浆蒸煮器的连续方法。 在连续操作烹饪中，纤维纸浆在垂直烹饪容器（1）中向下运动，其上部形成烹饪区（2），下部形成用于熟浆的纸浆逆流洗涤区（3），并且被去除 作为从容器的下端到排气管（9）的煮熟的纸浆。 在本发明中，烹饪容器的洗涤区中的液相被分离并作为洗涤液转移到高于分离点（10）的位置，并且还到烹饪容器的下部以形成稀释液，从而降低纸浆浓度 。 本发明具有减少纤维聚集和磨损的特殊目的，其损害纤维并且降低从容器中去除的熟浆的强度性能。

公开(公告)号：WO2020003128A1

公开(公告)日：2020-01-02

申请号：PCT/IB2019/055349

申请日：2019-06-25

Applicant: STORA ENSO OYJ

Inventor： LAMPAINEN, Seppo ,  PENG, Frank ,  LAAKSO, Atso ,  MÄÄTTÄNEN, Ari-Pekka

IPC: B23B29/08 ,  B65D65/40 ,  D21H11/02 ,  D21H11/08 ,  D21H11/10 ,  D21H27/10 ,  D21H27/30 ,  D21H27/40 ,  D21H11/18 ,  D21H17/28 ,  D21H17/42 ,  D21H17/44 ,  D21H21/18

Abstract: 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 cm 3 /g.