公开(公告)号：US09708772B2

公开(公告)日：2017-07-18

申请号：US14786124

申请日：2014-04-25

Applicant: WETEND TECHNOLOGIES OY ,  STORA ENSO OYJ

Inventor： Isto Heiskanen ,  Olavi Imppola ,  Jouni Matula ,  Jussi Matula ,  Jari Rasanen ,  Karri Tahkola ,  Matti Vakevainen

IPC: D21H21/18 ,  D21H17/63 ,  D21H17/70 ,  D21H17/67 ,  D21H17/00 ,  D21H21/10 ,  D21H23/04 ,  C01F11/18 ,  D21H17/37

CPC classification number: D21H21/18 ,  C01F11/181 ,  C01F11/182 ,  C01P2004/03 ,  C01P2004/62 ,  D21H17/375 ,  D21H17/63 ,  D21H17/675 ,  D21H17/70 ,  D21H17/73 ,  D21H17/74 ,  D21H21/10 ,  D21H23/04

Abstract: The present invention relates to a method of producing precipitated calcium carbonate (PCC) where a retention/strength enhancing chemical is added to milk of lime to form a mixture thereof prior to adding the mixture of the retention/strength enhancing chemical and milk of lime to paper making stock in a pipeline leading to a headbox of a paper making machine, whereafter carbon dioxide is introduced to the paper making stock, and the carbonation reaction between milk of lime and carbon dioxide is allowed to proceed in the presence of both fibers and the retention/strength enhancing chemical.

公开(公告)号：US10711403B2

公开(公告)日：2020-07-14

申请号：US15737000

申请日：2016-06-29

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Jari Rasanen

IPC: D21H27/38 ,  D21H21/56 ,  D21F11/00 ,  D21H11/02 ,  D21H11/14 ,  D21H27/30 ,  B65D1/34 ,  D21J3/12 ,  D21J7/00

Abstract: The invention relates to a method of manufacturing a shaped tray or plate of fibrous material. The method comprises the steps of (i) providing a fibrous pulp, in which the fibres substantially consist of at least 85 wt-% of softwood fibres having an average fibre length of at least 2.0 mm and at most 15 wt-% of broke having a fibre length of about 0.05 mm to 1.0 mm, (ii) turning the pulp into a foamed suspension, (iii) supplying the foamed suspension from a headbox to a forming fabric of a board machine to form a fibrous web, (iv) drying the web to obtain a dried web having a compressibility in the thickness direction of at least 20%, and (v) including the web as a layer in a board, which is turned to said tray or plate by thermopressing or deep-drawing. The invention even covers shaped trays and plates produced by use of the method.

公开(公告)号：US20180171560A1

公开(公告)日：2018-06-21

申请号：US15737000

申请日：2016-06-29

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Jari Rasanen

IPC: D21H27/38 ,  D21F11/00 ,  D21H21/56

Abstract: The invention relates to a method of manufacturing a shaped tray or plate of fibrous material. The method comprises the steps of (i) providing a fibrous pulp, in which the fibres substantially consist of at least 85 wt-% of softwood fibres having an average fibre length of at least 2.0 mm and at most 15 wt-% of broke having a fibre length of about 0.05 mm to 1.0 mm, (ii) turning the pulp into a foamed suspension, (iii) supplying the foamed suspension from a headbox to a forming fabric of a board machine to form a fibrous web, (iv) drying the web to obtain a dried web having a compressibility in the thickness direction of at least 20%, and (v) including the web as a layer in a board, which is turned to said tray or plate by thermopressing or deep-drawing. The invention even covers shaped trays and plates produced by use of the method.

公开(公告)号：US09863093B2

公开(公告)日：2018-01-09

申请号：US14441257

申请日：2013-11-06

Applicant: Stora Enso Oyj ,  Wetend Technologies Ltd.

Inventor： Olavi Imppola ,  Jouni Matula ,  Jussi Matula ,  Karri Tahkola ,  Matti Vakevainen ,  Isto Heiskanen ,  Jari Rasanen

IPC: D21H17/67 ,  D21H11/18 ,  D21H17/25 ,  D21H17/70

CPC classification number: D21H17/675 ,  D21H11/18 ,  D21H17/25 ,  D21H17/67 ,  D21H17/70

Abstract: A ply for a paper and paperboard made from a ply substrate material, wherein the ply comprises a hybrid material, in an amount of 1-25 wt-% of the ply, wherein the hybrid material is introduced into a target suspension of the short circulation of a fibrous web forming process of a fibrous web machine, in an in-line process, wherein said target suspension forms the ply substrate material, and the hybrid material comprises an alkaline earth carbonate precipitated onto or into fibers or fibrils of a nanofibrillated polysaccharide.

公开(公告)号：US09453305B2

公开(公告)日：2016-09-27

申请号：US14441249

申请日：2013-11-06

Applicant: Stora Enso Oyj ,  Wetend Technologies Ltd.

Inventor： Olavi Imppola ,  Jouni Matula ,  Jussi Matula ,  Karri Tahkola ,  Isto Heiskanen ,  Matti Vakevainen ,  Jari Rasanen

IPC: D21H17/00 ,  D21H11/18 ,  D21H17/25 ,  D21H17/67 ,  D21H17/70 ,  D21H17/28

CPC classification number: D21H17/74 ,  D21H11/18 ,  D21H17/25 ,  D21H17/28 ,  D21H17/67 ,  D21H17/675 ,  D21H17/70

Abstract: An in-line production method for providing a liquid flow of at least one additive in the short circulation and into the liquid flow of a paper making stock of a fiber web machine by feeding, the liquid flow of the at least one additive to the liquid flow of the short circulation, wherein a suitable amount of a microfibrillated cellulose or nanofibrillated polysaccharide is provided substantially simultaneously with the feeding of liquid flow of the at least one additive.

Abstract translation: 一种线内生产方法，用于通过将所述至少一种添加剂的液体流供给到液体中来提供在短循环中的至少一种添加剂的液体流动并进入纤维网机器的造纸原料的液体流中 短循环的流动，其中与所述至少一种添加剂的液体流的供给基本上同时提供适量的微纤化纤维素或纳米纤维化多糖。