公开(公告)号：WO2021124040A1

公开(公告)日：2021-06-24

申请号：PCT/IB2020/061801

申请日：2020-12-11

Applicant: STORA ENSO OYJ

Inventor： LAMPAINEN, Seppo ,  MYLLYKANGAS, Janne ,  PAAKKANEN, Petri ,  LAAKSO, Atso ,  BACKFOLK, Kaj

IPC: D21F11/04 ,  B32B29/08 ,  D21F1/02 ,  D21H27/38 ,  D21H27/40

Abstract: The invention relates to a method to produce a linerboard exhibiting a high bending resistance and a high compression strength, which in turn provides high resistance to interflute buckling and sagging in a thereof formed corrugated board. This is achieved by the inventive combination of an optimized fiber refining level of the furnish in each layer of the linerboard, the separate formation of the top layer and the use of a multi-layer headbox to form the two-layered ply. In addition, the linerboard made according to the invention provides good printing properties in a thereof produced corrugated board, especially in flexographic printing, without the fluting structure being negatively affected.

公开(公告)号：WO2009125068A1

公开(公告)日：2009-10-15

申请号：PCT/FI2009/050269

申请日：2009-04-08

Applicant: STORA ENSO OYJ ,  HEISKANEN, Isto ,  MYLLYKANGAS, Janne ,  RÄISÄNEN, Timo

Inventor： HEISKANEN, Isto ,  MYLLYKANGAS, Janne ,  RÄISÄNEN, Timo

IPC: D21H27/10 ,  B65D3/06 ,  B65D65/40 ,  D21H17/17 ,  D21H21/20 ,  B32B29/00

CPC classification number: D21H21/16 ,  B32B27/08 ,  B32B27/10 ,  B32B27/32 ,  B32B27/36 ,  B32B27/40 ,  B32B2307/31 ,  B32B2307/714 ,  B32B2307/718 ,  B32B2307/72 ,  B32B2307/7265 ,  B32B2307/73 ,  B32B2439/00 ,  B32B2439/70 ,  B65D65/42 ,  D21H17/17 ,  D21H17/56 ,  D21H19/22 ,  D21H21/20 ,  D21H27/10 ,  Y10T428/1303

Abstract: The invention relates to a polymer-coated, heat-sealable liquid packaging board that resists solvents, such as strong alcoholic drinks, to a method of manufacturing the same and to a drinking cup made of the same. In the invention, resistance to solvents is achieved by lowering the raw edge penetration to the board. For this, the fibre base of the board contains at least 1.3 kg of hydrophobic size containing alkyl ketene dimer (AKD) per 1 tonne of dry matter, and at least 1.0 kg of wet- strength size per 1 tonne of dry matter, the density of the fibre base is 630-800 kg/m3 and the amount of heat-sealable polymer in the top layer is higher than the Bristow wheel roughness volume of the uncoated fibre base and/or at least 14 g/m2. When manufacturing the board, the AKD size, the length of the carbon chain of which is preferably at least C18, and the wet-strength size, such as polyamidoamine epichlorohydrin resin (PAAE), are added into the stock on the wire of the paper or board machine or before the same. At the same time, the pH of the tail water is adjusted so as to be alkaline, preferably to a value of over 9, whereby the pH of the water extract of the obtained board is in the order of about 7 or more. The drinking cup made of the board resists an ethanol solution of 30% by weight at 23°C for at least 1 h.

Abstract translation: 本发明涉及一种聚合物涂覆的，可热封的液体包装板，其抵抗诸如强酒精饮料的溶剂，其制造方法和由其制成的饮杯。 在本发明中，通过降低对板的原始边缘渗透来实现对溶剂的耐受性。 为此，板的纤维基含有每1吨干物质至少1.3公斤含有烷基烯酮二聚体（AKD）的疏水尺寸，每1吨干物质含有至少1.0公斤湿强度，密度 的纤维基数为630-800kg / m 3，顶层中的可热封聚合物的量高于未涂布的纤维基材的Bristow轮粗糙度体积和/或至少14g / m 2。 当制造板时，将AKD尺寸，其碳链长度优选至少为C18，以及湿强度尺寸（例如聚酰胺胺表氯醇树脂（PAAE））加入到纸上的原料中 或板机或之前。 同时，将尾水的pH调节为碱性，优选为9以上，由此所得板的水提取物的pH为约7以上。 由该板制成的饮用杯子抵抗在23℃下30重量％的乙醇溶液至少1小时。

公开(公告)号：EP2262950B1

公开(公告)日：2015-07-08

申请号：EP09729894.7

申请日：2009-04-08

Applicant: Stora Enso Oyj

Inventor： HEISKANEN, Isto ,  MYLLYKANGAS, Janne ,  RÄISÄNEN, Timo

IPC: D21H27/10 ,  B65D3/06 ,  B65D65/40 ,  D21H17/17 ,  D21H21/20 ,  B32B29/00 ,  B65D65/42 ,  D21H21/16

CPC classification number: D21H21/16 ,  B32B27/08 ,  B32B27/10 ,  B32B27/32 ,  B32B27/36 ,  B32B27/40 ,  B32B2307/31 ,  B32B2307/714 ,  B32B2307/718 ,  B32B2307/72 ,  B32B2307/7265 ,  B32B2307/73 ,  B32B2439/00 ,  B32B2439/70 ,  B65D65/42 ,  D21H17/17 ,  D21H17/56 ,  D21H19/22 ,  D21H21/20 ,  D21H27/10 ,  Y10T428/1303

公开(公告)号：EP2262950A1

公开(公告)日：2010-12-22

申请号：EP09729894.7

申请日：2009-04-08

Applicant: Stora Enso Oyj

Inventor： HEISKANEN, Isto ,  MYLLYKANGAS, Janne ,  RÄISÄNEN, Timo

IPC: D21H27/10 ,  B65D3/06 ,  B65D65/40 ,  D21H17/17 ,  D21H21/20 ,  B32B29/00

CPC classification number: D21H21/16 ,  B32B27/08 ,  B32B27/10 ,  B32B27/32 ,  B32B27/36 ,  B32B27/40 ,  B32B2307/31 ,  B32B2307/714 ,  B32B2307/718 ,  B32B2307/72 ,  B32B2307/7265 ,  B32B2307/73 ,  B32B2439/00 ,  B32B2439/70 ,  B65D65/42 ,  D21H17/17 ,  D21H17/56 ,  D21H19/22 ,  D21H21/20 ,  D21H27/10 ,  Y10T428/1303

Abstract: The invention relates to a polymer-coated, heat-sealable liquid packaging board that resists solvents, such as strong alcoholic drinks, to a method of manufacturing the same and to a drinking cup made of the same. In the invention, resistance to solvents is achieved by lowering the raw edge penetration to the board. For this, the fibre base of the board contains at least 1.3 kg of hydrophobic size containing alkyl ketene dimer (AKD) per 1 tonne of dry matter, and at least 1.0 kg of wet- strength size per 1 tonne of dry matter, the density of the fibre base is 630-800 kg/m3 and the amount of heat-sealable polymer in the top layer is higher than the Bristow wheel roughness volume of the uncoated fibre base and/or at least 14 g/m2. When manufacturing the board, the AKD size, the length of the carbon chain of which is preferably at least C18, and the wet-strength size, such as polyamidoamine epichlorohydrin resin (PAAE), are added into the stock on the wire of the paper or board machine or before the same. At the same time, the pH of the tail water is adjusted so as to be alkaline, preferably to a value of over 9, whereby the pH of the water extract of the obtained board is in the order of about 7 or more. The drinking cup made of the board resists an ethanol solution of 30% by weight at 23°C for at least 1 h.