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公开(公告)号：EP3177769A1
公开(公告)日：2017-06-14
申请号：EP15819737.6
申请日：2015-07-07
申请人： Stora Enso Oyj
发明人： HÅKANSSON, Philip
IPC分类号： D21H17/69 , C09C1/02 , D21H17/67 , D21H17/68 , D21H23/76 , D21H17/65 , D21H17/66 , D21H23/04
CPC分类号： D21H17/68 , C09C1/0081 , C09C1/021 , C09C1/28 , C09C1/30 , D21H17/29 , D21H17/44 , D21H17/65 , D21H17/66 , D21H17/675 , D21H21/10 , D21H23/04
摘要： The invention relates to a method of making paper or paperboard comprising the steps of; a. providing a stock suspension; b. adding a mixture of alkali-metal silicate and precipitated calcium carbonate to said stock suspension; c. adding an acidic media to said stock suspension substantially directly before and/or after step (b) d. forming a web of the stock suspension obtained in step (d) e. drying said web. The addition of a mixture of alkali-metal silicate and PCC and of an acidic media to the stock suspension in accordance with the invention improves the bonding between the fibers and the filler (PCC), whereby problems related to dusting is decreased. Moreover, the method enables the addition of a higher amount of fillers to the paper without substantially affecting the strength.
摘要翻译： 本发明涉及一种制造纸或纸板的方法，包括以下步骤： 一个。 提供股票暂停; 湾 向所述原料悬浮液中加入碱金属硅酸盐和沉淀碳酸钙的混合物; C。 基本上直接在步骤（b）d之前和/或之后向所述原料悬浮液中加入酸性介质。 形成步骤（d）中获得的原料悬浮液的网。 干燥所述网。 根据本发明将碱金属硅酸盐和PCC和酸性介质的混合物加入到原料悬浮液中改善了纤维和填料（PCC）之间的粘合，从而降低了与除尘有关的问题。 此外，该方法能够在不显着影响强度的情况下向纸中添加更多量的填料。
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2.发明公开IN-LINE PRODUCTION OF SILICA FOR RETENTION PURPOSE 审中-公开INTEL-HERSTELLUNG VON SILICIUMDIOXIDFÜRHALTEZWECKE
公开(公告)号：EP2961885A4
公开(公告)日：2016-09-07
申请号：EP14756607
申请日：2014-02-28
申请人： STORA ENSO OYJ
发明人： HAKANSSON PHILIP
IPC分类号： D21H21/10 , C01B33/143 , C02F1/52 , D21H17/13 , D21H17/66 , D21H17/68 , D21H17/70 , D21H23/18
CPC分类号： D21H23/18 , C02F1/5236 , C02F2103/28 , D21H17/65 , D21H17/68 , D21H21/10
摘要： The present invention discloses an in-line production method for providing a retention agent into a liquid flow of a stock suspension and into the short circulation of a paper making machine, wherein the method comprises the steps of: (i) providing a liquid flow of a stock suspension; and (ii) feeding at least one additive into said liquid flow of the stock suspension, wherein said retention agent is formed directly in said stock suspension. The at least one additive may be added to the stock suspension e.g. as a liquid flow. The retention agent provided by the method of the invention may further improve the control of the dewatering rate and subsequently the strength properties of the paper. By this method there is provided a way of forming a retention agent directly into the stock suspension. The need of transporting, e.g. a readymade solution of a retention agent is thereby abolished, and thus the retention aid may be formed in a very cost-efficient way. Further as the retention agent is formed directly into the stock suspension it may very quickly and efficiently adhere to the fine particles, or the filler in the stock suspension and thus a more efficient effect may be achieved.
摘要翻译： 本发明公开了一种在线制造方法，用于将保留剂提供到原料悬浮液的液体流中并进入造纸机的短循环中，其中所述方法包括以下步骤：（i）提供液体流 股票暂停; 和（ii）将至少一种添加剂进料到所述原料悬浮液的液体流中，其中所述保留剂直接形成在所述原料悬浮液中。 可以将至少一种添加剂加入到原料悬浮液中。 作为液体流动。 通过本发明的方法提供的保留剂可进一步改善脱水速率的控制以及随后的纸的强度性能。 通过该方法，提供了将保留剂直接形成到原料悬浮液中的方法。 运输的需要，例如 从而废弃了保留剂的现成溶液，因此可以以非常经济高效的方式形成助留剂。 此外，由于保留剂直接形成在原料悬浮液中，所以可以非常快速且有效地粘附到细颗粒或原料悬浮液中的填料，从而可以获得更有效的效果。
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3.发明授权
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公开(公告)号：EP1735238A2
公开(公告)日：2006-12-27
申请号：EP05730052.7
申请日：2005-03-24
申请人： U.S. BORAX INC.
发明人： SCHUBERT, David, M.
IPC分类号： C01B35/00
CPC分类号： C09K21/02 , D21H17/65 , D21H21/34 , D21H21/36 , Y10T428/31989
摘要： A method for inhibiting the crystallization of boric acid is provided. Boric acid is dissolved in water and a vitrifying agent, such as an amino alcohol or amino acid, to form an aqueous mixture which is then dried to form a vitreous boric acid-containing residue. This mixture, when applied to a surface and allowed to dry on the surface, forms a vitreous boric acid-containing coating which is readily adherent to the surface, or if allowed to penetrate into a porous substrate, deposits a vitreous boric acid-containing residue within the substrate upon drying. The vitreous boric acid-containing residue provides beneficial properties, including for example improved fire retardancy and biocidal protection, to a variety of materials such as cotton batting, cellulose, and wood and paper products and gypsum wallboard.
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公开(公告)号：EP0954512B1
公开(公告)日：2004-04-28
申请号：EP97954983.9
申请日：1997-12-05
CPC分类号： C01F11/18 , C01F11/185 , C01P2006/22 , C01P2006/60 , C09C1/021 , D21H17/07 , D21H17/65 , D21H17/66 , D21H17/67 , D21H17/675 , D21H17/71
摘要： The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak acid, a chelating agent, a weak acid capable of chelating calcium ion, or a mixture thereof. The acid-stabilizer is present in an amount sufficient to provide an aqueous calcium carbonate slurry having an increased calcium ion concentration and an acidic pH. In a typical acid-stabilized calcium carbonate slurry of the invention, the acid-stabilizer is present in an amount sufficient to provide a calcium ion concentration of about 1 millimolar to about 5 molar, preferably from about 1 to about 120 millimolar. The invention also relates to a method of making the acid-stabilized calcium carbonate slurry of the invention, to a method of forming a filled paper, that includes the step of adding the acid-stabilized calcium carbonate slurry of the invention to a papermaking pulp in a process for making acid paper, and to a filled paper produced according to the method of the invention.
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公开(公告)号：EP1396474A2
公开(公告)日：2004-03-10
申请号：EP03078021.7
申请日：1997-12-05
CPC分类号： C01F11/18 , C01F11/185 , C01P2006/22 , C01P2006/60 , C09C1/021 , D21H17/07 , D21H17/65 , D21H17/66 , D21H17/67 , D21H17/675 , D21H17/71
摘要： The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak acid, a chelating agent, a weak acid capable of chelating calcium ion, or a mixture thereof. The acid-stabilizer is present in an amount sufficient to provide an aqueous calcium carbonate slurry having an increased calcium ion concentration and an acidic pH. In a typical acid-stabilized calcium carbonate slurry of the invention, the acid-stabilizer is present in an amount sufficient to provide a calcium ion concentration of about 1 millimolar to about 5 molar, preferably from about 1 to about 120 millimolar. The invention also relates to a method of making the acid-stabilized calcium carbonate slurry of the invention, to a method of forming a filled paper, that includes the step of adding the acid-stabilized calcium carbonate slurry of the invention to a papermaking pulp in a process for making acid paper, and to a filled paper produced according to the method of the invention
摘要翻译： 本发明涉及pH值小于7，优选介于约6和约7之间的酸稳定碳酸钙浆料，其含有水，碳酸钙，优选沉淀碳酸钙和水溶性钙盐的酸稳定剂 ，弱酸，螯合剂，能够螯合钙离子的弱酸，或其混合物。 酸稳定剂的存在量足以提供具有增加的钙离子浓度和酸性pH的碳酸钙水浆。 在本发明的典型酸稳定化碳酸钙浆料中，酸稳定剂的存在量足以提供约1毫摩尔至约5摩尔，优选约1至约120毫摩尔的钙离子浓度。 本发明还涉及制备本发明的酸稳定化碳酸钙浆料的方法，涉及形成填充纸的方法，该方法包括将本发明的酸稳定化碳酸钙浆料添加到造纸纸浆中的步骤 制造酸纸的方法，以及根据本发明的方法生产的填充纸
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公开(公告)号：EP0981665B1
公开(公告)日：2001-12-19
申请号：EP98929465.7
申请日：1998-06-25
CPC分类号： D21H23/10 , D21C9/004 , D21H17/65 , D21H17/675
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公开(公告)号：EP1114219A1
公开(公告)日：2001-07-11
申请号：EP99903781.5
申请日：1999-02-18
发明人： RICHARD, Christian
CPC分类号： D21C9/004 , C01F11/18 , D21C5/025 , D21H17/01 , D21H17/64 , D21H17/65 , D21H17/66 , D21H17/675 , D21H17/70 , Y02W30/648
摘要： The invention concerns a method for obtaining fibres integral with calcium carbonate particles which consists in contacting the fibres to be treated with carbon dioxide generators and with at least a composition containing Ca++ ions capable of reacting with the carbon dioxide so as to obtain 'in fine' a calcium carbonate precipitate 'in situ' on the fibres. Preferably, calcium bicarbonate is used as carbon dioxide generator. The invention also concerns a method for eliminating calcium carbonate from other insoluble substances contained in various aqueous media, and derived in particular from papers to be recycled, and de-inking sludge which consists in injecting CO¿2? in the medium to be treated, solubilizing the calcium carbonate into calcium bicarbonate, separating the calcium bicarbonate formed by filtering the medium after reaction.
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公开(公告)号：EP0954512A2
公开(公告)日：1999-11-10
申请号：EP97954983.0
申请日：1997-12-05
CPC分类号： C01F11/18 , C01F11/185 , C01P2006/22 , C01P2006/60 , C09C1/021 , D21H17/07 , D21H17/65 , D21H17/66 , D21H17/67 , D21H17/675 , D21H17/71
摘要： The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak acid, a chelating agent, a weak acid capable of chelating calcium ion, or a mixture thereof. The acid-stabilizer is present in an amount sufficient to provide an aqueous calcium carbonate slurry having an increased calcium ion concentration and an acidic pH. In a typical acid-stabilized calcium carbonate slurry of the invention, the acid-stabilizer is present in an amount sufficient to provide a calcium ion concentration of about 1 millimolar to about 5 molar, preferably from about 1 to about 120 millimolar. The invention also relates to a method of making the acid-stabilized calcium carbonate slurry of the invention, to a method of forming a filled paper, that includes the step of adding the acid-stabilized calcium carbonate slurry of the invention to a papermaking pulp in a process for making acid paper, and to a filled paper produced according to the method of the invention.
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