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1. 发明专利

JP2007126770A Method for making paper 审中-公开
标题翻译：制作纸的方法
公开(公告)号：JP2007126770A
公开(公告)日：2007-05-24
申请号：JP2005319268
申请日：2005-11-02
申请人： Arakawa Chem Ind Co Ltd , Oji Paper Co Ltd , 王子製紙株式会社 , 荒川化学工業株式会社
发明人： SHIMAMOTO KATSUHIRO , SAKAEMURA TAKUSHI , KANEHAMA MAKOTO , HIROSE KUNIHIRO , ABE KENICHI , ASHITACHI HIROAKI , YAMAGISHI YOSHIO
IPC分类号： D21H17/44 , D21H21/18 , D21H23/10
摘要： PROBLEM TO BE SOLVED: To provide a method for making paper by which a formation and freeness can be easily balanced to improve paper strength thereby and to reduce the amount of a paper strength improver used in the production of the paper as the result, and the drainage properties at the papermaking is improved to improve the operability.
SOLUTION: The method for making the paper involves carrying out the papermaking by using (A) a cationic polyacrylamide-based paper strength improver and (B) an anionic polyacrylamide-based paper strength improver having a larger difference in freenesses measured before and after the addition of the paper strength improver based on JIS P 8121 than that of the cationic polyacrylamide-based paper strength improver (A).
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种制造纸的方法，通过该方法可以容易地平衡形成和游离度，从而提高纸张强度，并减少纸张生产中使用的纸强度改进剂的量，结果，并且提高了造纸时的排水性能以提高可操作性。解决方案：制造纸的方法包括使用（A）基于阳离子聚丙烯酰胺的纸强度改进剂和（B）基于以前测定的游离度差异的阴离子聚丙烯酰胺类纸强度改进剂进行造纸在添加基于JIS P 8121的纸张强度改进剂比基于阳离子聚丙烯酰胺的纸强度改进剂（A）的纸强度改进剂之后。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2008266819A Low density book paper 审中-公开
标题翻译：低密度书籍纸
公开(公告)号：JP2008266819A
公开(公告)日：2008-11-06
申请号：JP2007109906
申请日：2007-04-18
申请人： Oji Paper Co Ltd , 王子製紙株式会社
发明人： ASHITACHI HIROAKI , SHIMATANI KEIJI , YAMAGISHI YOSHIO
IPC分类号： D21H21/22 , D21H17/67 , D21H17/68 , D21H19/38 , D21H19/54 , D21H19/58
摘要： PROBLEM TO BE SOLVED: To provide low density book paper which has a low density, has excellent ink receptivity (ink adhesion), opacity, surface smoothness, and surface strength, and is flexible.
SOLUTION: This low density book paper is obtained by coating base paper mainly containing chemical pulp and 1.0-5.0 mass% of hydrated silica having an oil absorption of 360-500 ml/100g, light calcium carbonate, and talc in material pulp, with a surface-treating agent containing a pigment containing ≥60 mass% of calcium carbonate within the range of ≤1.5 g/m
2 per one side, and has an ash content of 18-28%, a density of ≤0.60 g/m
3 , a brightness of ≥77.0%, and an opacity of ≥92.0%.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供低密度低密度书纸，具有优异的油墨接受性（油墨粘附性），不透明度，表面光滑度和表面强度，并且是柔性的。
解决方案：这种低密度书纸是通过以主要含化学纸浆的原纸和1.0-5.0质量％吸油量为360-500ml / 100g的水合二氧化硅，轻质碳酸钙和滑石粉在原料纸浆中，含有含有≥60质量％碳酸钙的颜料的表面处理剂在每一面≤1.5g/ m 2 SPF范围内，灰分含量为18-28％，密度≤0.60g/ m 2，亮度≥77.0％，不透明度≥92.0％。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2008266818A Low density book paper 有权
标题翻译：低密度书籍纸
公开(公告)号：JP2008266818A
公开(公告)日：2008-11-06
申请号：JP2007109826
申请日：2007-04-18
申请人： Oji Paper Co Ltd , 王子製紙株式会社
发明人： ASHITACHI HIROAKI , SHIMATANI KEIJI , YAMAGISHI YOSHIO
IPC分类号： D21H17/68
摘要： PROBLEM TO BE SOLVED: To provide low density book paper which has a low density, has excellent opacity, surface smoothness, and surface strength, and is flexible. SOLUTION: This low density book paper having a density of ≤0.60 g/m 2 and an opacity of ≥92% is prepared by coating base paper containing 18-27% of ashes and consisting mainly of chemical pulp with a surface-treating agent containing starch and a styrene-butadiene copolymer latex in a ratio of 50/50 to 90/10 in an amount of 0.5-1.5 g/m 2 per one side. Preferably, the base paper has an oil absorption of 360 to 500 ml/100g, an average particle diameter of 15-30 μm by laser method, and a standard deviation particle volume distribution to particle diameters of 0.3-0.4, when particle diameters (μm) are expressed by logarithm, and contains hydrated silica in an amount of 1.0-5.0 mass%. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供具有低密度，优异的不透明性，表面光滑度和表面强度的低密度书本纸，并且是柔性的。
解决方案：通过涂覆含有18-27％的灰分的原纸并主要组成，制备密度为≤0.60g/ m 2，SP <2和<92％的低密度书纸的化学纸浆与含有淀粉的表面处理剂和比率为50/50至90/10的苯乙烯 - 丁二烯共聚物胶乳的量为0.5-1.5g / m 2 / SP / 。优选地，原纸的吸油量为360〜500ml / 100g，通过激光法的平均粒径为15〜30μm，粒径为0.3〜0.4的标准偏差粒子体积分布，当粒径（μm））由对数表示，含有1.0〜5.0质量％的水合二氧化硅。版权所有（C）2009，JPO＆INPIT

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