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公开(公告)号：EP4134235A1
公开(公告)日：2023-02-15
申请号：EP21190813.2
申请日：2021-08-11
摘要： There is provided a multi-layered paperboard (200, 300) comprising a first cellulose fibre-based layer (201, 301) and a second cellulose fibre-based layer (202, 302), which second layer (202, 302) has an inner surface facing in the direction of the first layer (201, 301) and an outer surface facing in the opposite direction, wherein the density of the second layer (202, 302) is below 550 kg/m3 and lower than the density of the first layer (201, 301) and wherein an additive (204, 304) selected from the group consisting of starch, fines, MFC, CMC and PVOH is added to the outer surface of the second layer (202, 302), with the proviso that no further cellulose fibre-based layer is provided on the outer surface of the second layer (202, 302).
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公开(公告)号：EP4384394A1
公开(公告)日：2024-06-19
申请号：EP22764740.1
申请日：2022-08-11
CPC分类号： D21H27/30 , D21H27/38 , D21H11/08 , D21H11/02 , B32B29/005
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公开(公告)号：EP4357522A1
公开(公告)日：2024-04-24
申请号：EP22202547.0
申请日：2022-10-19
摘要： The present disclosure provides a method of producing a paperboard comprising a top layer, a back layer and a middle layer, said method comprising the steps of:
- providing a first fraction of a pulp of recycled bleached fibers, which first fraction has a Schopper-Riegler value measured according to ISO 5267-1:1999 of below 24;
- forming a middle layer furnish comprising a chemithermomechanical pulp (CTMP) and the first fraction; and
- forming said middle layer from said middle layer furnish.-
公开(公告)号：EP4353901A1
公开(公告)日：2024-04-17
申请号：EP22201159.5
申请日：2022-10-12
发明人： NORDSTRÖM, Fredrik , NYMAN, Ulf , ALDÉN, Mats , MARKBO, Olivia , KRIECHBAUM, Konstantin , SAXENA, Amit
摘要： A paper having:
- a density measured according to ISO 534:2011 above 1000 kg/m3;
- a strain at break measured according to ISO 1924-3:2005 in the machine direction above 3%;
- a basis weight measured according to ISO 536:2012 below 100 g/m2, such as below 70 g/m2; and
- a Bendtsen surface roughness on at least one side below 150 ml/min when measured according to ISO 8791-2:2013.-
公开(公告)号：EP4261346A1
公开(公告)日：2023-10-18
申请号：EP22168616.5
申请日：2022-04-14
发明人： NORDSTRÖM, Fredrik
IPC分类号： D21H11/04 , B32B29/00 , D21F3/02 , D21H11/08 , D21H11/10 , D21H11/14 , D21H27/10 , D21H27/38
摘要： There is provided a method of producing a paper- or linerboard having a grammage measured according to ISO 536:2019 of 170-310 g/m 2 and comprising a print layer, a middle layer and a back layer, wherein the middle layer is formed from a middle layer furnish comprising at least 25% by dry weight CTMP and the back layer is formed from a back layer furnish comprising an unbleached pulp, such as an unbleached kraft pulp, said method comprising the step of subjecting a multi-layered web at a speed of at least 600 m/min to pressing in a press section comprising a first and a second double-felted shoe press nip arranged in series, wherein the total press impulse of the double-felted shoe press nips is at least 95 kPa ∗ s, preferably at least 100 kPa ∗ s.
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公开(公告)号：EP4134236A1
公开(公告)日：2023-02-15
申请号：EP21190815.7
申请日：2021-08-11
摘要： There is provided a multi-layered paperboard comprising a first outer layer, a second outer layer and at least one middle layer arranged between the first and the second outer layer, wherein the grammage of the first outer layer is at least 2.0 times higher than the grammage of the second outer layer. A method of producing the multi-layered paperboard is also provided.
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公开(公告)号：EP4384395A1
公开(公告)日：2024-06-19
申请号：EP22764741.9
申请日：2022-08-11
CPC分类号： D21H27/30 , B32B29/005 , D21H11/02 , D21H11/08
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公开(公告)号：EP4357520A1
公开(公告)日：2024-04-24
申请号：EP22202546.2
申请日：2022-10-19
摘要： There is provided a method of producing a paperboard comprising a top layer, a back layer and a middle layer, said method comprising the steps of:
- forming a middle layer furnish comprising an OCC pulp, a CTMP and broke pulp; and
- forming said middle layer from said middle layer furnish,
wherein, in the middle layer furnish, the amount of OCC pulp is higher than the amount of CTMP, which is higher than the amount of broke pulp as per dry weight and wherein the combined amount of OCC pulp, CTMP and broke pulp constitutes at least 88% as per dry weight of the middle layer furnish.-
公开(公告)号：EP4323584A1
公开(公告)日：2024-02-21
申请号：EP22722738.6
申请日：2022-04-13
发明人： MARKBO, Olivia , ALDÉN, Mats , NYMAN, Ulf , NORDSTRÖM, Fredrik
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