公开(公告)号：US11214927B2

公开(公告)日：2022-01-04

申请号：US16610101

申请日：2018-06-13

Applicant: Kemira Oyj

Inventor： Mikko Virtanen ,  Kimmo Strengell ,  Juan Cecchini ,  Matti Hietaniemi

IPC: D21F1/02 ,  D21H21/20 ,  D21F9/00 ,  D21F11/04 ,  D21H11/14 ,  D21H17/25 ,  D21H17/28 ,  D21H17/42 ,  D21H17/45 ,  D21H27/38

Abstract: A method is disclosed for increasing strength properties, preferably burst strength and SCT strength, of a paper or board product. The paper or board product is manufactured from a fibrous web produced by a multilayer headbox, where an aqueous layer is formed between at least a first and a second fibre layer formed from fibrous stock suspension(s), and where feed water for the aqueous layer includes at least one cationic polymer. The method of the invention includes adding an anionic additive selected from a group comprising anionic synthetic organic polymers, anionic polysaccharides, and any of their combinations to the feed water before formation of the aqueous layer.

公开(公告)号：US20150041092A1

公开(公告)日：2015-02-12

申请号：US14380323

申请日：2013-02-22

Applicant: KEMIRA OYJ

Inventor： Matti Hietaniemi ,  Kimmo Strengell ,  Asko Karppi ,  Marko Kolari ,  Jaakko Ekman

IPC: D21H17/66 ,  D21H17/63 ,  D21H17/55

CPC classification number: D21H17/66 ,  D21H11/14 ,  D21H17/28 ,  D21H17/37 ,  D21H17/55 ,  D21H17/63 ,  D21H27/002

Abstract: The invention relates to a method for making of paper, tissue, board or the like by using recycled fibre material as a raw material. The method comprises following steps: pulping recycled paper, board or the like in a pulper and obtaining a pulp flow comprising (i) an aqueous phase and (ii) at least recycled fibres and starch having low molecular weight, which are dispersed in the aqueous phase; adding a coagulant agent to the pulp flow or to an aqueous process flow comprising starch having low molecular weight; allowing the coagulant agent to interact with the starch having low molecular weight and optionally forming aggregates; and adding at least one flocculating agent, after the addition of the coagulant agent, to any flow, which comprises interacted coagulant agent, and forming a treated flow with starch comprising agglomerate(s); retaining at least part of the said aggregates and/or the said agglomerates to the fibres or to a web, which is formed.

Abstract translation: 本发明涉及通过使用再生纤维材料作为原料来制造纸，纸板，纸板等的方法。 该方法包括以下步骤：在碎浆机中制浆再循环的纸，板等，并获得纸浆流，其包含（i）水相和（ii）至少回收的纤维和低分子量的淀粉，其分散在水性 相; 向纸浆流中加入凝结剂或包含低分子量淀粉的含水工艺流程; 使凝结剂与低分子量的淀粉相互作用并任选地形成聚集体; 在加入凝结剂之后，将至少一种絮凝剂加入到包含相互作用的凝结剂的任何流动中，并用包含附聚物的淀粉形成经处理的流体; 将所述聚集体和/或所述附聚物的至少一部分保留在所形成的纤维或纤维网上。

公开(公告)号：US10590604B2

公开(公告)日：2020-03-17

申请号：US15546069

申请日：2016-01-26

Applicant: Kemira Oyj

Inventor： Asko Karppi ,  Matti Hietaniemi ,  Anneli Lepo ,  Kimmo Strengell

IPC: D21H17/45 ,  D21H21/18 ,  D21H17/37 ,  D21H21/10 ,  D21H17/42 ,  D21H17/44 ,  C08F220/56

Abstract: The invention relates to a water-soluble polymer product in particle form, comprising amphoteric polyacrylamide, which is obtained by gel polymerisation of acrylamide together with anionic and cationic monomers. The amphoteric polyacrylamide has a mass average molecular weight MW of 1 500 000-6 000 000 g/mol, and a total ionicity of 4-15 mol-%, whereby the polymer product has a polymer content of at least 60 weight-%. The invention relates also to uses of the polymer product in paper and board making.

公开(公告)号：US20180016746A1

公开(公告)日：2018-01-18

申请号：US15546069

申请日：2016-01-26

Applicant: Kemira Oyj

Inventor： Asko Karppi ,  Matti Hietaniemi ,  Anneli Lepo ,  Kimmo Strengell

IPC: D21H17/45 ,  D21H21/18 ,  C08F220/56

Abstract: The invention relates to a water-soluble polymer product in particle form, comprising amphoteric polyacrylamide, which is obtained by gel polymerisation of acrylamide together with anionic and cationic monomers. The amphoteric polyacrylamide has a mass average molecular weight MW of 1500000-6000000 g/mol, and a total ionicity of 4-15 mol-%, whereby the polymer product has a polymer content of at least 60 weight-%. The invention relates also to uses of the polymer product in paper and board making.

公开(公告)号：US20230122111A1

公开(公告)日：2023-04-20

申请号：US17905406

申请日：2021-03-04

Applicant: Kemira Oyj

Inventor： Kimmo Strengell ,  Asko KARPPI

IPC: D21H17/55 ,  D21H17/37 ,  D21H17/42 ,  D21H17/44 ,  D21H23/04 ,  D21H21/20

Abstract: The invention relates to a composition and method for manufacture of paper, board, tissue or the like. The composition comprises an amphoteric polymer component, which has a weight average molecular weight of at least 600 000 g/mol, preferably at least 1 000 000 g/mol, more preferably at least 2 000 000 g/mol, and at least one synthetic cationic polymer component, which is a copolymer of a polyamidoamine and has a weight average molecular weight ≤550 000 g/mol, preferably ≤500 000 g/mol, more preferably ≤400 000 g/mol and dispersity index more than 15, preferably more than 20, more preferably more than 25.

公开(公告)号：US10787768B2

公开(公告)日：2020-09-29

申请号：US16317590

申请日：2017-09-04

Applicant: Kemira Oyj

Inventor： Matti Hietaniemi ,  Jaakko Ekman ,  Asko Karppi ,  Kimmo Strengell

IPC: D21H17/37 ,  D21H17/45 ,  D21H17/14 ,  D21H17/42 ,  D21H21/10 ,  D21H21/36 ,  D21H23/18 ,  D21H21/18 ,  D21H17/15 ,  D21H11/04 ,  D21H11/14

Abstract: A method for manufacture of paper, board or the like, comprising the step of dissolving a composition into aqueous solution, whereby an aqueous treatment solution is obtained for adding the obtained treatment solution to the pulp. The composition comprising a copolymer of acrylamide and at least one cationic monomer, the copolymer comprising cationic monomers at least 15 mol-%, calculated from total amount of monomers, and an ionic crosslinker agent comprising at least two carboxyl groups, wherein the equivalent ratio of carboxyl groups:cationic monomer is between 1:20 and 1:0.5.

公开(公告)号：US09279217B2

公开(公告)日：2016-03-08

申请号：US14380323

申请日：2013-02-22

Applicant: KEMIRA OYJ

Inventor： Matti Hietaniemi ,  Kimmo Strengell ,  Asko Karppi ,  Marko Kolari ,  Jaakko Ekman

IPC: D21H17/66 ,  D21H17/28 ,  D21H11/14 ,  D21H27/00 ,  D21H17/37 ,  D21H17/55 ,  D21H17/63

CPC classification number: D21H17/66 ,  D21H11/14 ,  D21H17/28 ,  D21H17/37 ,  D21H17/55 ,  D21H17/63 ,  D21H27/002

Abstract: The invention relates to a method for making of paper, tissue, board or the like by using recycled fiber material as a raw material. The method comprises following steps: pulping recycled paper, board or the like in a pulper and obtaining a pulp flow comprising (i) an aqueous phase and (ii) at least recycled fibers and starch having low molecular weight, which are dispersed in the aqueous phase; adding a coagulant agent to the pulp flow or to an aqueous process flow comprising starch having low molecular weight; allowing the coagulant agent to interact with the starch having low molecular weight and optionally forming aggregates; and adding at least one flocculating agent, after the addition of the coagulant agent, to any flow, which comprises interacted coagulant agent, and forming a treated flow with starch comprising agglomerate(s); retaining at least part of the said aggregates and/or the said agglomerates to the fibers or to a web, which is formed.

Abstract translation: 本发明涉及通过使用再生纤维材料作为原料来制造纸，纸板，纸板等的方法。 该方法包括以下步骤：在碎浆机中制浆再循环的纸，板等，并获得纸浆流，其包含（i）水相和（ii）至少回收的纤维和低分子量的淀粉，其分散在水性 相; 向纸浆流中加入凝结剂或包含低分子量淀粉的含水工艺流程; 使凝结剂与低分子量的淀粉相互作用并任选地形成聚集体; 在加入凝结剂之后，将至少一种絮凝剂加入到包含相互作用的凝结剂的任何流动中，并用包含附聚物的淀粉形成经处理的流体; 将所述聚集体和/或所述附聚物的至少一部分保留在所形成的纤维或纤维网上。