公开(公告)号：US20100206498A1

公开(公告)日：2010-08-19

申请号：US12531968

申请日：2008-03-21

申请人： Chie Yuzawa ,  Hisashi Iwabuchi ,  Yasuyuki Kamijo ,  Shisei Goto ,  Takeshi Imori

发明人： Chie Yuzawa ,  Hisashi Iwabuchi ,  Yasuyuki Kamijo ,  Shisei Goto ,  Takeshi Imori

IPC分类号： D21C5/02

CPC分类号： D21C5/025 ,  Y02W30/648

摘要： The object of the present invention is to provide a process for producing deinked pulp from recovered paper containing stickies while preventing excessive reduction in the size of stickies, lowering the COD of effluents, and producing deinked pulp with a smaller residual ink content.In the ink detachment stage of the process for producing deinked pulp from recovered paper containing stickies, an anhydride of crystalline layered silicate is added, preferably in an amount of 0.1-1.5 weight % of absolute-dry pulp, and a deinking treatment is performed at a pH of 7.0-9.9. In the present invention, the deinking treatment is performed in a weakly alkaline to neutral region which is generally said to be effective in reducing the amount of stickies but less effective in ink detachment and, yet, deinked pulp having a smaller amount of residual ink can be produced.

摘要翻译： 本发明的目的是提供一种从含有回收纸的粘合剂生产脱墨纸的方法，同时防止粘性物质的过度减少，污水的COD降低，并且生产具有较小残留油墨含量的脱墨纸浆。 在从含有回收纸的糊状物生产脱墨纸的方法的油墨分离阶段中，加入结晶层状硅酸盐的酸酐，优选为绝对干纸浆的0.1-1.5重量％，脱墨处理 pH值为7.0-9.9。 在本发明中，脱墨处理在弱碱性至中性区域进行，通常认为在降低粘合剂量方面有效，但是在墨水分离中效果较差，但是具有较少残留墨水量的脱墨纸浆可以 生产。

公开(公告)号：US08043473B2

公开(公告)日：2011-10-25

申请号：US12531968

申请日：2008-03-21

申请人： Chie Yuzawa ,  Hisashi Iwabuchi ,  Yasuyuki Kamijo ,  Shisei Goto ,  Takeshi Iimori

发明人： Chie Yuzawa ,  Hisashi Iwabuchi ,  Yasuyuki Kamijo ,  Shisei Goto ,  Takeshi Iimori

IPC分类号： D21B1/32

CPC分类号： D21C5/025 ,  Y02W30/648

摘要： The object of the present invention is to provide a process for producing deinked pulp from recovered paper containing stickies while preventing excessive reduction in the size of stickies, lowering the COD of effluents, and producing deinked pulp with a smaller residual ink content.In the ink detachment stage of the process for producing deinked pulp from recovered paper containing stickies, an anhydride of crystalline layered silicate is added, preferably in an amount of 0.1-1.5 weight % of absolute-dry pulp, and a deinking treatment is performed at a pH of 7.0-9.9. In the present invention, the deinking treatment is performed in a weakly alkaline to neutral region which is generally said to be effective in reducing the amount of stickies but less effective in ink detachment and, yet, deinked pulp having a smaller amount of residual ink can be produced.

摘要翻译： 本发明的目的是提供一种从含有回收纸的粘合剂生产脱墨纸的方法，同时防止粘性物质的过度减少，污水的COD降低，并且生产具有较小残留油墨含量的脱墨纸浆。 在从含有回收纸的糊状物生产脱墨纸的方法的油墨分离阶段中，加入结晶层状硅酸盐的酸酐，优选为绝对干纸浆的0.1-1.5重量％，脱墨处理 pH值为7.0-9.9。 在本发明中，脱墨处理在弱碱性至中性区域进行，通常认为在降低粘合剂量方面有效，但是在墨水分离中效果较差，但是具有较少残留墨水量的脱墨纸浆可以 生产。

公开(公告)号：US07384502B2

公开(公告)日：2008-06-10

申请号：US10730006

申请日：2003-12-09

申请人： Yasuyuki Kamijo ,  Isao Onodera ,  Keigo Watanabe ,  Takanori Miyanishi

发明人： Yasuyuki Kamijo ,  Isao Onodera ,  Keigo Watanabe ,  Takanori Miyanishi

IPC分类号： D21B1/16 ,  D21C9/10 ,  D21C9/02 ,  D21C1/06

CPC分类号： D21B1/16 ,  D21C9/10 ,  D21C9/1005

摘要： Wood chips having low bleachability are impregnated with a chemical liquor at a pH range of 7-12 in aqueous solution and the chemical liquor from the impregnated chips is drained, whereby extractives contained in the chips and consuming bleaching agents can be removed to improve the effect of bleaching agents in a subsequent bleaching step. Bleached mechanical pulp is prepared by defibration by primary refining—bleaching—beating by secondary refining wherein pulp fibers are washed after defibrating wood chips having low bleachability and before bleaching the pulp fibers, whereby the amount of bleaching agents used can be reduced and bleached mechanical pulp having a Hunter brightness of 45-65% after secondary refining can be obtained.

摘要翻译： 具有低漂白性的木片用水溶液中pH为7-12的化学液浸渍，并且排出来自浸渍的碎片的化学液体，由此可以除去包含在碎片中并且消耗漂白剂的提取物以改善效果 的漂白剂。 漂白的机械纸浆是通过二次精炼进行的一次精炼 - 漂白 - 脱色来进行的，其中纸浆纤维在去纤维中具有低漂白性和漂白纸浆纤维之​​前被洗涤，从而可以减少使用的漂白剂的量和漂白的机械纸浆 可以获得二次精炼后的亨特亮度为45-65％。