201040354 六、發明說明： 【發明所屬之技術領域】 本發明係關於紙之製造方法。本發明特別是關於適於 供給平版印刷、照相凹版印刷等的各種印刷方式之紙之製 造方法。 【先前技術】 0 印刷用紙所要求之重要品質之一，是防止可從背面看 見印刷，亦即所謂「透現」現象。印·刷用紙當中，特別是 報紙，由於基重低且重量輕，且大多是藉由使用滲透乾燥 型墨水而不經由熱乾燥過程之冷固化型平版印刷機來進行 印刷，因此防止透現的技術是越來越困難。 一般而言，爲了抑制透現，提高紙的不透明度最具效 果。作爲提高紙的不透明度之方法，將塡料（比散射係數 高，不透明度的提昇效果大）配合於紙中以提高灰分是有 〇 效的。 然而，近年來，在紙的製造方面，隨著紙中廢紙配合 率的增加、紙的製造之高速化、中性化、抄紙網區（wire part )之夾網（twin wire )化等的進展，這些技術動向， 會使紙料中的紙漿原料及塡料（或灰分）的良率降低，而 使紙的高灰分化技術變得越來越困難。 根據如此般製紙技術近年來的動向，如何開發出能以 高良率來製造出紙中的灰分高之印刷用紙是重要的。一般 而言’爲了提昇紙漿和塡料等的良率是使用良率提昇劑（ -5- 201040354 良率劑），關於良率劑的添加方法，迄今爲止有以下的技 術被提出。 在專利文獻1 (日本特表2007-508129號公報）記載 著，在將保持化學物質供應給液體流之前，事先將保持化 學物質與清水或循環液混合，然後將該保持化學物質溶液 供應給液體流，藉此讓少量的化學物質效率良好地混合於 液體流中。 在專利文獻2(日本特開2002 - 227〇90號公報）記載 著，在喂料箱、扇泵的前方、或是篩網的入口添加聚合系 陽離子性高分子及/或聚縮合系陽離子性物質，在篩網入 口或出口添加聚合系陽離子性水溶性高分子，藉此提昇良 率。 在專利文獻3 (日本特開2004-176184號公報）記載 著，在使用模組噴射型抄紙機進行抄紙的情況，在製紙原 料及返回高位調漿槽（head box )的白水中添加良率提昇 劑，藉此來提昇良率。 〔專利文獻1〕日本特表2007-508129號公報 〔專利文獻2〕日本特開2002-227090號公報 〔專利文獻3〕日本特開2004- 1 76 1 84號公報 【發明內容】 一般而言，在製紙時爲了提昇良率，是將稱爲良率劑 之藥品添加於紙料中。添加於紙料之良率劑，在紙料中會 與紙漿纖維、塡料等形成較弱的凝集，藉此提昇抄紙時的 -6- 201040354 良率。另一方面’在良率劑的添加量過多的情況等，若良 率劑使紙料產生過強的凝集，紙的質地會變差，而使紙發 生不均一。 爲了以不致讓紙的質地變差的方式來提昇良率，如何 讓良率劑充分混合於紙料中而使紙料的凝集狀態形成均一 是重要的。作爲其方法之一，可考慮在比紙料往抄紙網噴 射的時點早非常多的階段將良率劑添加於紙料，而讓良率 〇 劑充分地分散於紙料中。然而，保有充裕的時間來將良率 劑添加於紙料中雖可改善混合狀態，但當紙料通過篩網等 時受到機械的剪切負荷會使良率劑的效果變差，或良率劑 的效果會隨著時間經過而衰減，因此必須添加多量的良率 劑。 於是’可考慮在紙料即將往抄紙網噴射之前，亦即在 紙料即將送入高位調漿槽之前才添加良率劑。依據此方法 ’雖可避免良率劑效果隨著時間經過而衰減或受到機械的 Ο 剪切力而造成良率劑的效果降低，但良率劑分散於紙料的 時間極短，又由於紙料的流動成爲層流，良率劑與紙料無 法充分地混合而使紙料的凝集變得不均一。因此，紙的質 地變差，在極端的情況會發生斷紙等的問題。 如此般，良率的提昇與質地存在著取捨的關係，而期 望能開發出不致讓質地變差且能充分發揮良率劑的效果之 技術。特別是在配合有多量塡料的印刷用紙，能維持灰分 的高良率而以良好的作業性來製造紙的技術是必要的。有 鑑於上述的狀況，本發明的課題是爲了提供：不致讓紙的 201040354 質地和作業性變差而能以高良率來製造高灰分的紙之方法 0 本發明人等，爲了解決上述課題而進行深入探討的結 果發現，對於從高位調漿槽將紙料噴射至抄紙網前的紙料 濃度爲2重量％以下的紙料’將製紙用藥品和其他液體一 起噴射而進行合流，特別是使用具有同心狀構造的多流體 噴嘴之噴射裝置來將製紙用藥品和其他液體一起噴射而進 行合流，藉此可將製紙用藥品迅速地混合於紙料，而能讓 製紙用藥an的效果發揮到最大限度，如此到達本發明的完 成。 本發明並不限定於此，是包含以下的發明。 (1 ) 一種灰分8重量％以上的紙之製造方法，係包含 :對於濃度2重量％以下的紙料，將一種以上的製紙用藥 品和其他液體一起噴射而進行混合。 (2 )在（1 )記載的方法中，藉由具有同心狀構造的 多流體噴嘴之噴射裝置，將一種以上的製紙用藥品和其他 液體一起朝紙料噴射。 (3)在（1)或（2)記載的方法中，前述製紙用藥 品包含良率劑。 (4 )在（3 )記載的方法中，前述良率劑爲陽離子性 良率劑，依據極限黏度法之重量平均分子量爲1000萬以 上，陽離子電荷密度爲〇.5meq/g以上。 (5)在（3)或（4)記載的方法中，前述良率劑之 0.3重量％水溶液的B型黏度，在溫度2 5 °C爲2 0 0 m P a · s 201040354 以下。 此外，使用同心狀構造的多流體噴嘴將製紙用藥品流 和其他液體流一邊混合一邊噴射的情況，在多流體噴嘴運 轉時，起因於紙料所含的纖維之纏絡、堆積、製紙用藥品 等而會產生沉渣（沉澱物、沉積物等），該沉渣可能誘發 抄紙機之斷紙、紙的紙面缺陷。沉渣容易形成於多流體噴 嘴內部、流體合流的場所，又在多流體噴嘴具有將流體加 〇 壓供應的泵的情況，是容易形成於其內部、與泵連接之配 管內部等。 於是，本發明人，針對可保留使用多流體噴嘴來添加 製紙用藥品的優點且能控制多流體噴嘴之沉渣發生的技術 ’進行深入探討的結果發現：藉由控制流過多流體噴嘴之 最外側的噴嘴之液體濃度、壓力，可抑制使用多流體噴嘴 時之沉渣發生，且能將製紙用藥品高效率地混合於紙料。 亦即，在本發明，可使從多流體噴嘴之最外側的噴嘴 Ο 所噴射的液體濃度爲〇 . 1〜2.0重量％，且使從多流體噴嘴 之最內側的噴嘴所噴射之液體濃度比從最外側的噴嘴所噴 射的液體濃度低0.1重量％以上。 再者，在本發明，能使從多流體噴嘴之最外側的噴嘴 所噴射的液體噴射壓比紙料流的壓力高3 .1 bar以上。此外 ’能使從多流體噴嘴之最外側的噴嘴所噴射的液體噴射壓 比從最內側的噴嘴所噴射的液體噴射壓高2 · 2b ar以上。 因此，本發明不限定於此，但進一步包含以下的發明 -9 - 201040354 (6 )在（2 )〜（5 )任一項記載的方法中’使從多流 體噴嘴之最外側的噴嘴所噴射的液體濃度爲〇.1〜2.0重量 %，且使從多流體噴嘴之最內側的噴嘴所噴射之液體丨農€ 比從最外側的噴嘴所噴射的液體濃度低〇·1重量％以上。 (7 )在（2 )〜（6 )任一項記載的方法中，從多流體 噴嘴之最外側的噴嘴所噴射的液體噴射壓比紙料流的M力 高3 _ 1 bar以上。 (8 )在（7 )記載的方法中，從多流體噴嘴之最外側 的噴嘴所噴射的液體噴射壓比從最內側的噴嘴所噴射的液 體噴射壓高2.2bar以上。 (9 )在（1 )〜（8 )任一項記載的方法中，其他液體 是選自紙料、白水、澄清白水、清水之一種以上。 (1 〇 )在（1 )〜（9 )任一項記載的方法中，前述紙 料流是通過篩網後之紙料流。 依據本發明，可讓包含良率劑之製紙用藥品迅速且均 一地混合於紙料。此外，依據本發明，可讓製紙用藥品的 效果充分發揮，因此可減少藥品的添加量。而且，不致讓 紙的質地和作業性變差，能以高良率製造出高灰分的紙。 【實施方式】 1.紙 本發明之灰分8重量％以上的紙之製造方法，係包含 :$率劑等的製紙用藥品和其他液體一起朝濃度2重量 T的紙料噴射而進行混合。藉由本發明製造的紙，由 -10- 201040354 於可將添加於紙之塡料增多，其不透明度高’可適用於各 種印刷用途。又本發明的紙並不包含紙板。藉由本發明獲 得的紙，例如能藉由冷平版印刷、熱平版印刷等的平版印 刷，照相凹版印刷等的凹版印刷，凸版印刷等的印刷方式 來進行印刷。因此，依據本發明所製造的紙’例如可作爲 上質印刷用紙、中質印刷用紙、報紙用紙、書籍用紙、各 種塗布紙用的原料、資訊記錄用紙等來使用。 ¢) 本發明之抄紙系統並沒有特別的限制’是中性紙或酸 性紙皆可，當本發明的紙含有較多碳酸鈣的情況，宜爲中 性紙。具體而言，在本發明，紙面pH宜爲6.0〜9.0 ’更佳 爲 7.0 〜8 · 0 〇 本發明的紙之灰分爲8重量％以上，依據本發明可有 效地提昇高灰分的紙之良率，因此灰分宜爲1 0重量％以上 ’更佳爲1 2重量。/。以上，特佳爲1 5重量％以上。在製造 這麼高灰分的紙時，可充分享受本發明的效果。灰分的上 〇 限沒有限制，若考慮到紙的強度和作業性，宜爲4〇重量％ 以下。 一般而言，灰分是代表紙所含的無機物量’基本上是 反映紙中所含的塡料量。紙的灰分是包含：來自添加於紙 料之全新的塡料，以及從D IP (廢紙紙漿、脫墨紙漿）等 的紙漿原料帶進來的。從DIP帶進來的灰分，雖含有較多 的碳酸鈣，但也含有碳酸鈣以外的無機成分，碳酸鈣和其 他無機成分的比例是依廢報紙、廢雜誌等的廢紙種類及回 收狀況而異。本發明之灰分，是依據ns P 825 1所規定的 -11 - 201040354 紙及紙板之灰分試驗方法，而使用燃燒溫度設定成525±25 °c的方法來進行測定。 本發明的紙所使用的塡料，只要添加成使灰分成爲8 重量％以上即可，並沒有特別的限制，例如可使用：重質 碳酸鈣、輕質碳酸鈣等的碳酸鈣；氧化鈦、黏土、二氧化 矽、滑石、筒嶺土、燒成高嶺土、剝層高嶺土、碳酸鎂、 酸鋇、氧化鲜、氧化砂、非晶質二氧化砂、氫氧化銘、 氫氧化鈣、氫氧化鎂、氫氧化鋅、氧化鈦、膨潤土等的無 機塡料；尿素一甲醛樹脂、聚苯乙烯樹脂、三聚氰胺樹脂 、酸樹脂、微小中空粒子等的有機塡料；可將其等單獨或 適當地組合二種以上來使用。此外，也能使用以製紙污泥 或脫墨泡沫爲原料之再生塡料。在本發明，基於價廉且光 學特性優異的觀點’較佳爲使用碳酸鈣作爲塡料。此外， 也能使用：碳酸鈣-二氧化矽複合物（例如日本特開 2003-212539號公報或日本特開2005-219945號公報等所 記載的輕質碳酸鈣-二氧化矽複合物）等的複合塡料。在 酸性抄紙，係使用前述中性抄紙所使用的塡料當中除了酸 溶解性以外的塡料，其可單獨或適當地組合二種以上來使 用。 在本發明’由於能以較低成本來提昇紙的不透明度及 白色度，較佳爲將碳酸鈣以內添塡料的形式配合。基於提 昇不透明度及白色度的觀點，本發明的紙，在非塗布紙的 情況，碳酸鈣含量宜爲5重量。以上，更佳爲6重量％以 上，特佳爲7重量％以上。在塗布紙的情況，原紙的碳酸 -12- 201040354 鈣含量宜爲5重量。/。以上，更佳爲6重量％以上，特佳爲7 重量％以上。 本發明所使用的紙漿沒有特別的限制，可使用一般的 紙篥’具體而言，除了 一般的木材紙漿以外，還能使用： 棉絨紙漿、麻、蔗渣、洋麻、針茅草、稻草等的非木材紙 漿；嫘縈、醋酸酯等的半合成纖維；聚烯烴、聚醯胺、聚 酯等的合成纖維等。具體而言，可適當地使用一般作爲紙 〇 的抄紙原料用之機械紙漿（MP )、脫墨紙漿（DIP，也稱 爲廢紙紙漿）、闊葉樹牛皮紙漿（LKP )、針葉樹牛皮紙 發（NKP)等’可適當地配合其中一種或二種以上來使用 。作爲機械紙漿可列舉：碎木紙漿（G P )、精煉碎木紙漿 (RGP )、熱機械紙漿（TMP )、化學熱機械紙漿（CTMP )、化學硏磨紙漿（CGP )、半化學紙漿（SCP )等. 一般若廢紙配合率提高，墨水成分等的帶負電的微細 粒子會大量地流入抄紙系統，這些帶負電的粒子互相排斥 〇 ’且不容易與同樣是帶負電的紙漿纖維結合，因此電負電 的膠體粒子會蓄積在抄紙系統內，而使陽離子性的良率劑 的效果顯著降低。關於這點，若將本發明運用於多量配合 DIP (容易降低良率）的情況，可讓良率劑等的效果充分 發揮故特別有利。因此，在本發明的一態樣，紙漿中的 DIP比例宜爲1 0重量％以上，更佳爲1 5重量％以上，特佳 爲20重量％以上。作爲DIP的原料可適當地使用：上質 紙、中質紙、下級紙、報紙 '廣告單 '雜誌等的分類廢紙 ，混合有該等之未分類廢紙，包含複寫紙、感熱紙、非碳 -13- 201040354 紙等的辦公室廢紙。 本發明的紙的基重，可按照用途來設定而沒有特別的 限制，大多爲225g/m2以下，作爲印刷用紙通常爲 30〜150g/m2，較佳爲 30〜12〇g/m2。 2 ·製紙用藥品對紙料的混合 (紙料濃度） 本發明的紙之製造方法，是包含讓良率劑等的製紙用 藥品和其他液體一起朝濃度2重量％以下的紙料噴射而進 行混合。因此，在本發明，良率劑等的製紙用藥品，是添 加於2重量％以下之較低濃度的紙料。—般而言，包含紙 漿、塡料、各種藥品等的紙料，是在混合槽（mixing chest)、抄紙機儲娥槽（machine chest) '喂料箱等進行 混合’逐漸稀釋而送往高位調漿槽’從高位調漿槽噴射到 抄紙網而形成紙。在喂料箱等中，紙料的固體成分濃度大 多爲3重量％以上，然後，紙料經由白水等稀釋而成爲2 重量％以下，在本發明，是對於稀釋至2重量％以下後的 紙料添加良率劑及其他的製紙用藥品。添加製紙用藥品時 較佳的紙料濃度爲1.8重量％以下，更佳爲1 6重量％以下 。此外，其理由雖不甚清楚，在紙料所含的纖維中超過 1 mm的纖維比例多的情況，纖維彼此容易纏絡，如此所產 生的纖維塊和沉渣會構成紙發生缺陷和製紙過程的斷紙的 原因之一，因此在本發明’相對於高位調漿槽中的全體紙 漿纖維’纖維長1 mm以上的纖維量宜爲長度加權（length -14- 201040354 w e i g h t e d ) 5 0 %以下，更佳爲長度加權4 〇 %以下。 (液體濃度） 在本發明的較佳態樣，本發明之紙之製造方法，是藉 由具有同心狀構造的多流體噴嘴之噴射裝置，來將良率劑 等的製紙用藥品和其他液體一起朝紙料流噴射而進行混合 ，且從多流體噴嘴之最外側的噴嘴所噴射的液體濃度宜爲 0 〇 · 1〜2 · 0重量％。從多流體噴嘴之最外側的噴嘴所噴射的液 體濃度更佳爲〇 · 3重量％以上，特佳爲0.5重量％以上。此 外，從多流體噴嘴之最外側的噴嘴所噴射的液體濃度更佳 爲1 . 8重量％以下，特佳爲1.6重量％以下。 再者，在本發明，從多流體噴嘴之最內側的噴嘴所噴 射之液體濃度比從最外側的噴嘴所噴射的液體濃度低〇. 1 重量％以上，更佳爲低0.3重量％以上的情況，能使本發明 的效果增大。 〇 如此般將從多流體噴嘴之最外側的噴嘴所噴射的液體 濃度降低，且使多流體噴嘴之最內側的噴嘴所噴射之液體 濃度比從最外側的噴嘴所噴射的液體濃度更低’藉此能使 液體流互相捲入，而讓製紙用藥品迅速地與紙料進行合流 、混合。再者，可抑制使用多流體噴嘴時之沉澄（沉源物 、沉積物等）的發生，而能防止抄紙機之斷紙及紙的紙面 缺陷發生。 依據本發明，可抑制使用多流體噴嘴時之沉淹發生的 詳細理由雖不甚清楚，本發明雖不限定於此’但據推測： -15- 201040354 藉由降低從多流體噴嘴所噴射之液體濃度，在多流體噴嘴 內部及其原料配管內可減少包含纖維之固體成分的堆積、 附著，又藉由降低液體濃度能讓藥品的效果有效地發揮， 結果可抑制沉渣的形成。 (噴射壓） 在本發明的較佳態樣，本發明之紙之製造方法，是藉 由具有同心狀構造的多流體噴嘴之噴射裝置，來將良率劑 等的製紙用藥品和其他液體一起朝紙料流噴射而進行混合 ，且從多流體噴嘴之最外側的噴嘴所噴射的液體噴射壓， 宜比所合流之紙料流的壓力（內壓）高3 · 1 b ar以上。從多 流體噴嘴之最外側的噴嘴所噴射的液體噴射壓’更佳比所 合流之紙料流的壓力（內壓）局3.5bar以上’特佳爲筒 4. Ob ar以上。此外，若從多流體噴嘴之最外側的噴嘴所噴 射的液體噴射壓成爲過度極端的高壓’液體和紙料無法以 均一混合的方式從高位調漿槽噴射出而可能造成質地變差 ，因此從多流體噴嘴之最外側的噴嘴所噴射的液體噴射壓 ，不宜比所合流之紙料流的壓力（內壓）高超過4.5bar ° 如此般使從多流體噴嘴之最外側的噴嘴所噴射的液體 噴射壓比一般範圍更高’可抑制多流體噴嘴之沉澄（沉殿 物、沉積物等）的發生，可防止抄紙機之斷紙和紙的紙面 缺陷發生。附帶一提的，例如後述We tend technologies公 司之具有三流體噴嘴之噴射裝置（TrumpJ et ) ’從多流體 噴嘴之最外側的噴嘴所噴射的液體噴射壓宜比所合流之流 -16- 201040354 體的壓力（內壓）高2. Obar左右，一般是在這種程度的壓 力下進行作業。 依據本發明，可抑制多流體噴嘴之沉渣發生的詳細理 由雖不甚清楚，本發明雖不限定於此，但據推測：藉由將 從多流體噴嘴之最外側的噴嘴所噴射的液體噴射壓增高， 來自紙料流之紙料變得不容易流入多流體噴嘴之噴射部前 端、噴射部內部，可物理性地防止紙料所含的纖維等纏絡 0 堆積在局部，結果可抑制沉渣的形成。 此外，在本發明的較佳態樣，從多流體噴嘴之最外側 的噴嘴所噴射的液體噴射壓，宜比從最內側的噴嘴所噴射 的液體噴射壓高2.2bar以上。藉由如此般噴射液體，能使 液體流互相捲入，而讓製紙用藥品迅速地與紙料進行合流 、混合。此外，在從最內側的噴嘴所噴射的液體噴射壓極 低的情況，或外側的噴射壓與內側的噴射壓之壓力差極低 的情況，藉由壓力差可能使從最外側的噴嘴所噴射之液體 〇 等混入從內側進行噴射之噴射口，而使從最內側的噴嘴所 噴射的液體無法充分地從噴嘴噴射出，基於此觀點，從多 流體噴嘴之最外側的噴嘴所噴射的液體噴射壓，不宜比從 最內側的噴嘴所噴射的液體噴射壓高超過3 _5bar。 (添加場所和時點） 在本發明的較佳態樣，添加良率劑等的製紙用藥品的 場所，是在喂料箱和高位調漿槽之間。一般而言，在喂料 箱等混合後的紙料，是藉由扇泵等經由白水等稀釋後，進 -17- 201040354 一步藉由清潔器（cleaner)、篩網等除去異物之後，送往 高位調槳槽並朝抄紙網噴射。在本發明，添加良率劑等的 製紙用藥品的場所，較佳爲在喂料箱之後，更佳爲在通過 師網後的紙料添加製紙用藥品。以住，爲了讓良率劑與紙 料充分地混合’是在通過篩網之前的紙料添加良率劑，但 在本發明’藉由在通過舗網後的紙料添加製紙用藥品，可 避免通過篩網時所承受之機械剪切力，而讓良率劑等的製 紙用藥品的效果能不受影響地充分發揮。亦即，若在通過 篩網之前的紙料添加良率劑等，雖能讓良率劑等的製紙用 藥品均一地分散’但良率劑等的製紙用藥品和紙漿、塡料 之凝集在通過篩網時會被破壞’而可能造成良率提昇效果 降低。 異物除去用的篩網’並沒有特別的限制，可採用一般 所使用的’例如’可使用具有圓孔或狹縫狀等的開口部之 篩框（screen basket )。具體而言，也能組合開口部等不 同的複數個篩網來使用。在一個態樣下，可從紙料除去比 篩網的開口部更大的異物，紙料是藉由旋轉葉片加速，利 用此離心力來將異物朝外推出。此外，在本發明，除了舖 網以外’也能組合清潔器等其他的異物除去裝置來使用。 在此’從紙料除去異物的裝置，大致上區分成兩個，亦即 除去大的異物之篩網、除去重的異物之（真空）清潔器， 通常是將其等適當地組合來從紙料除去異物。 在本發明’添加製紙用藥品的時點沒有特別的限制， 但較佳爲是在從高位調漿槽噴射紙料前的5秒以內。藉由 -18- 201040354 如此般在即將從高位調漿槽噴射紙料之前的階段添加良率 劑等，可避免良率劑等的藥品的效果隨著時間經過而衰減 ，而能讓藥品的效果發揮到最大限度。本發明之添加製紙 用藥品的時點，更佳爲是在從高位調漿槽噴射紙料前的4 秒以內，最佳爲是在從高位調槳槽噴射紙料前的2秒左右 的時點。另一方面，爲了充分地確保良率劑等的藥品之混 合，較佳爲是在從高位調漿槽噴射紙料的0.5秒以上之前 0 添加製紙用藥品。 (製紙用藥品） 本發明之添加於紙料的製紙用藥品，沒有特別的限制 ’可將各種藥品單獨或組合使用。具體而言，作爲本發明 的製紙用藥品，例如可使用：良率劑、濾水性提昇劑、凝 結劑、硫酸鋁、膨潤土、二氧化矽、上膠劑、乾燥紙力增 強劑、溼潤紙力增強劑、增積劑、塡料、染料、消泡劑、 〇 紫外線防止劑、退色防止劑、黑渣（picth )抑制劑、殘渣 (slime )抑制劑等的製紙用藥品。其中，基於可在短時間 與紙料混合而充分享受本發明效果的觀點，作爲製紙用藥 品最佳爲添加良率劑。除了良率劑以外，作爲本發明的製 紙用藥品可適當使用者，例如可列舉：聚丙烯醯胺系高分 子、聚乙烯醇系高分子、陽離子性澱粉、各種變性澱粉、 尿素甲醛樹脂、三聚氰胺甲醛樹脂等的內添乾燥紙力增強 劑；聚醯胺聚胺環氧氯丙烷樹脂等的內添溼潤紙力增強劑 :松香系上膠劑、AKD系上膠劑、ASA系上膠劑、石油 -19- 201040354 系上膠劑、中性松香上膠劑等的內添上膠劑等等。 (良率劑） 依據本發明，在添加良率劑的情況，良率劑的種類沒 有特別的限制，可使用有機良率劑、無機良率劑、或是複 數種良率劑的混合系統。本發明所指的良率劑，是用來提 昇紙漿和塡料的良率之製紙用藥品，即使是以瀘水性提昇 劑、凝結劑等的名稱來販賣者’只要具有良率提昇效果就 屬於本發明的良率劑。本發明由於能在極短時間將製紙用 藥品混合於紙料，即使是其效果會隨時間經過而改變之精 細的良率劑也能適當地使用，在本發明宜使用聚合物系良 率劑。此外，良率劑的添加量’相對於紙漿固體成分宜爲 400ppm以下，更佳爲3 00ppm以下，特佳爲200ppm以下 。若良率劑的添加量過多’凝集力變得過強，可能使質地 變差。另一方面，爲了讓良率劑的效果發揮，宜添加 1 0 p p m以上的良率劑。 本發明所使用的良率劑，例如可列舉：陽離子性聚合 物、陰離子性聚合物、兩性聚合物、非離子性聚合物等。 此外也能倂用複數種藥劑，例如··倂用聚乙烯氧化物和酚 樹脂（磺化酚甲醛樹脂等）、陽離子性聚合物和陽離子性 聚合物 '除陽離子性聚合物以外還倂用無機微粒子（陰離 子性膨潤土、膠體二氧化矽等）或有機系微粒子（丙烯醯 胺經由父聯聚合而形成的微聚合物）之良率劑系統。此外 ’基於提高良率的目的’也能倂用：硫酸鋁、聚氯化鋁等 -20 - 201040354 的無機凝結劑；聚胺、聚乙烯亞胺、薄 DADMAC (二甲基二烯丙基氯化銨聚合物） 和丙烯醯胺的共聚物等的有機凝結劑。凝結 進行配合前的紙漿、塡料、藥品等的一種以 多段添加。 作爲良率劑使用之陽離子性聚合物，例 性單體和非離子性單體共聚合而獲得；作爲 0 ，例如可列舉：陽離子性乙烯基單體之（甲 甲胺乙酯、二甲胺丙基（甲基）丙烯醯胺等 。此外，作爲非離子性單體的例子，可列舉 烯醯胺、N，N-二甲基丙烯醯胺、醋酸乙烯、 酸甲酯、（甲基）丙烯酸2-羥乙酯、二丙酮 乙烯基吡咯酮、N-乙烯基甲醯胺、N-乙烯基 嗎琳、丙燃醯哌嗓（piperazine)等。其中 胺。此外，聚合物化之後進行水解等而製造 Q 也能使用。 作爲良率劑使用之兩性聚合物，例如可 烯基單體和陽離子性單體共聚合而獲得，作 烯基單體，可列舉：丙烯醯胺2-甲基丙磺酸 、（甲基）烯丙基磺酸、乙烯基磺酸、（甲 順丁烯二酸或亞甲基丁二酸等。 作爲良率劑是使用陰離子性聚合物、非 的情況，其種類也沒有特別的限制，可使用 〖乙烯胺、聚 、聚 DADMAC 劑，可添加於 上，也能實施 如可將陽離子 陽離子性單體 基）丙烯酸二 的丙烯醯胺等 :(甲基）丙 丙烯腈、丙烯 丙烯醯胺、N-乙醯胺丙烯醯 最佳爲丙烯醯 的聚乙烯胺等 將陰離子性乙 爲陰離子性乙 、苯乙烯磺酸 基）丙烯酸、 離子性聚合物 公知的聚合物 -21 - 201040354 本發明的較佳態樣所使用之良率劑， 直鏈狀或支鏈狀聚合物，作爲其製品形態 或分散型聚合物。作爲其種類，宜爲陽離 胺（PAM )系物質。在乳化液型的情況， 陽離子性的聚丙烯醯胺物質：在分散型的 鏈狀的陽離子性的聚丙烯醯胺物質。 本發明所使用的良率劑，可從市售物 擇。陽離子性聚丙烯醯胺物質的情況，能 行乳化聚合，較佳爲以油中水型的逆相乳 作爲其具體組成，只要在該物質中含有丙 作爲構造單位即可，並沒有特別的限定， 烯酸酯的四級銨鹽和丙烯醯胺的共聚物、 和丙烯酸酯共聚合後經四級化而得之銨鹽 此外，在本發明，基於提昇良率且具 點，良率劑的分子量，依極限黏度法宜爲 1000萬以上，更佳爲1500萬以上，重量 爲2000萬以上。 此外，基於提高良率的觀點，陽離子 好，具體而言宜爲〇.5meq/g以上，更佳；! 特佳爲1.5meq/g以上，最佳爲2meq/g以 用紙的情況，由於紙料的陽離子要求量極 密度越高越好。陽離子電荷密度的上限雖 ，但考慮到在高電荷密度下要將物質高分 難、製造成本變高，其上限爲5.0meq/g左 宜爲陽離子性的 ，宜爲乳化液型 子性的聚丙烯醯 更佳爲直鏈狀的 情況，更佳爲直 質當中適當地選 以公知的方法進 化法進行合成。 烯醯胺單體單元 例如可列舉：丙 或是將丙烯醯胺 〇 有良好質地的觀 重量平均分子量 平均分子量特佳 電荷密度越高越 ;1 m e q / g 以上， 上。在抄造報紙 高，陽離子電荷 沒有特別的限定 子化的技術變困 右。 -22- 201040354 此外，本發明發現，藉由使用低黏度的良率劑，亦即 溫度25°C之0.3重量％水溶液的b型黏度爲200mPa . 8以 下，較佳爲150mPa · s以下者，可抑制沉渣的產生並讓製 紙用藥品筒效率地混合於紙料。在此所指之〇 . 3重量％的 水溶液’在通常的製紙廠是將良率劑的原液稀釋成一定濃 度來貯藏，當使用時進一步稀釋成一定濃度，而在貯藏時 的水溶液濃度爲大槪0 · 3重量％。 〇 再者’良率劑的粒徑越小擴散性越佳，藉由增加藥品 與紙料的接觸機會容易進行均一混合，而不容易形成不均 一的凝集塊’因此基於抑制沉渣產生的觀點，依據光子相 關法的平均粒徑宜爲1 OOOnm以下，更佳爲500nm以下， 最佳爲2〇〇nm以下。 (其他液體） 在本發明，是將包含良率劑之製紙用藥品和其他液體 〇 一起朝紙料噴射。本發明所使用的其他液體沒有特別的限 制，可適當地使用工業用水等的通常的清水、白水、澄清 白水、從主流取出之含有紙料和製紙用藥品之水溶液等。 其等的液體’可單獨或混合二種以上來使用。此外，該等 液體的溫度沒有特別的限制，宜爲5〜5 0 左右。 本發明的白水’是來自抄紙機的抄紙網區及壓水區（ press part )之瀝水；澄清白水，是從包含白水之在整個抄 紙過程所回收的製造過程水除去一定程度的固體成分而獲 得的。作爲獲得澄清白水的手段，一般是使用盤濾機、克 -23- 201040354 羅夫特（加壓上浮裝置）等，例如在使用盤濾機的情況’ 可將含有長纖維之紙漿和白水混合後’經由盤濾機將固體 成分予以回收分離而獲得澄清白水；在使用克羅夫特的情 況，是在白水導入空氣之後，藉由連通大氣時所產生的氣 泡將塡料、纖維等的固體成分予以回收分離而獲得澄清白 水。一般白水濃度爲0.2〜1.5重量％左右，澄清白水濃度 爲0.001〜0.2重量％左右。 如上述般，在本發明的較佳態樣，基於抑制沉渣產生 的觀點，宜使從多流體噴嘴之最外側的噴嘴所噴射之液體 濃度爲一定以下’而且使從多流體噴嘴之最內側的噴嘴所 噴射之液體濃度比從最外側的噴嘴所噴射之液體濃度低一 定程度以上。從最外側的噴嘴所噴射之液體和從最內側的 噴嘴所噴射之液體的組合，例如可列舉：最外側/最內側 =紙料/清水、紙料/紙料+清水、紙料/紙料+白水、紙 料/澄清白水、白水/清水、白水/澄清白水、白水/白 水+清水 '澄清白水/清水等’但並不限定於此。 (作用） 在本發明，是將包含良率劑之製紙用藥品和其他液體 起朝紙料噴射，藉此相對於紙料能讓製紙用藥品迅速且 均地混合。依據本發明可迅速且均一地混合的詳細理由 雖尙未兀全明_ ’又本發明雖不受此拘帛，但藉由將包含 數紙用樂的液體朝紙料噴射，能使製紙用藥品均一地遍 及容易在配管中形成層流之低濃度紙肖，又藉由將包含製 -24- 201040354 紙用藥品的液體和其他液體一起噴射，能 品的液體流瞬間捲入其他液體流而迅速混 本發明，能讓製紙用藥品在紙料中高效率 紙用藥品的效果充分發揮，因此相較於以 藥品的使用量，從降低成本的觀點來看也 (噴射） 0 本發明之將液體朝紙料噴射，不是單 料合流，而是以一定以上的壓力將液體導 而言，是以比紙料流的內壓高〇.2bar以上 入。壓力的調整，例如可藉由調整輸送流 進行。又所噴射的液體流量，是根據抄紙 等來決定。 在本發明，是將一種以上的製紙用藥 起朝紙料噴射，因此是將包含製紙用藥品 〇 體、亦即至少二種液體朝紙料流噴射。本 以上的製紙用藥品和其他液體一起噴射而 況，可將一種以上的製紙用藥品和其他液 紙料流進行混合，也能將一種以上的製紙 體混合而使兩者以一體的形式噴射而與紙 在本發明，包含製紙用藥品的液體可爲複 體亦可爲複數種。如後述般透過多流體噴 料噴射的情況，液體可爲三種以上。例如 品之液體流爲一個，其他液體構成的液體 讓包含製紙用藥 合。此外，依據 地混合，而讓製 往可抑制製紙用 是有利的。 純地讓液體和紙 入紙料流。具體 的壓力將液體導 體之泵的輸出來 速度和配管大小 品和其他液體一 的液體和其他液 發明之「將一種 進行混合」的情 體一起噴射而與 用藥品和其他液 料流進行混合。 數種，又其他液 嘴來將液體朝紙 ，包含製紙用藥 流爲二個的情況 -25- 201040354 ，是使用同心狀的三流體噴嘴，將其他液體構成的第1流 體從最外側噴射，將其他液體構成的第2流體從最內側噴 射，將包含製紙用藥品之液體流從其他液體構成的第1及 第2流體之間噴射，藉由如此般噴射液體，可讓液體流互 相捲入而迅速地進行混合。在此情況，宜讓最外側的噴射 壓和最內側的噴射壓不同以迅速地進行混合，例如將前者 設定成比紙料流的內壓高2.4〜4.0b ar的壓力，將後者設定 成比紙料流的內壓高0.4〜2.4 b ar的壓力。此外，讓內側的 噴射壓比外側的噴射壓更高也是可能的。外側的噴射壓與 內側的噴射壓之壓力差大小沒有特別的限制，宜爲1 b ar 以上俾使流體迅速地混合。 如上述般，在本發明的較佳態樣，基於抑制沉渣產生 的觀點，宜使最外側的噴射壓比紙料流的內壓高3 · 1 bar以 上。最內側的噴射壓宜比紙料流的內壓高0.5 b ar以上。外 側的噴射壓與內側的噴射壓之壓力差大小，如上述般宜爲 2.2bar〜3.5bar，更佳爲mar以上俾使流體能相當迅速地 進行混合。 同樣的，在使用上述三流體噴嘴的情況，可對從最外 側噴射的第1流體和從最內側噴射的第2流體進行流量管 理。例如，宜將外側的第1流體設定成每一台44 6 L/秒， 更佳爲6〜1 2 L/秒。對應於此，宜將最內側的第2流體設定 成每一台〇.5~3 .OL/秒，更佳爲1.0〜2.0 L/秒。在此情況， 最外側流體的流量和最內側流體的流量差並沒有特別的限 制’藉由將其等的流量與前述壓力差之壓力管理予以組合 -26- 201040354 ，可高效率地進行液體的混合。 此外，在本發明，包含製紙用藥品的液體可爲二種以 上，例如可使用包含良率劑之液體和包含上膠鄙之液體， 如此可將二種以上的製紙用藥品一次就混合於紙料中。例 如，在含有良率劑的液體爲一個，含有上膠劑的液體爲一 個，白水等的其他液體爲二個的情況，合計有四個液體流 ，在此情況，例如是使用四流體噴嘴，分別在內外設置二 q 個白水等的其他液體之噴射流，在其間導入良率劑的噴射 流和上膠劑的噴射流。 此外，在本發明，如上述般可使用複數個含有製紙用 藥品之液體，而讓複數個製紙用藥品混合於紙料中，但在 一個液體中含有複數個製紙用藥品而將該液體朝紙料噴射 亦可。例如，可將良率劑和上膠劑混合於一個液體中，再 和其他液體一起朝紙料中噴射。又本發明之含有製紙用藥 品之液體的情況，除了含有一定比例的製紙用藥品之液體 Q 以外，也包含製紙用藥品整體之液體’又不僅是水溶性藥 品的水溶液，也包含塡料的分散液等，也能使用從製造過 程取出之紙料的一部分。 在本發明，是將包含良率劑之製紙用藥品和其他液體 一起朝紙料噴射，其噴射處可爲—處或二處以上。此外’ 在同一個添加場所設置複數個噴射裝置而構成一組的情況 ，亦可在不同的部位設置單獨的噴射裝置或是設置其他的 噴射裝置組。例如，讓紙料流過筒狀的配管中的情況’若 在配管上設置複數個噴射裝置（將包含良率劑之製紙用藥 -27- 201040354 品和其他液體一起朝紙料噴射），可將製紙用藥品對紙料 的混合點分散成複數個’而能更高效率地進行混合。在設 置複數個多流體噴嘴等的噴射裝置的情況，各個所使用的 製紙用藥品、其他流體及壓力、流量等的條件，可各個都 相同或各自不同。 本發明的多流體噴嘴，是指可噴射複數個流體之噴嘴 ’其具體構造沒有特別的限定。此外，爲了噴射複數個流 體可使用泵。泵是用來將液體輸送給多流體噴嘴，可以是 多流體噴嘴專用的’也能利用其他製造過程的液體輸送手 段的一部分。在本發明’爲了抑制沉渣的產生，泵和多流 體噴嘴內面之表面粗糙度宜爲4μηι以下，更佳爲2μιη以 下。表面粗糖度是依據JIS Β0601來測定，例如可使用 SurfteSt301 (三豐公司製）來進行。 本發明之多流體噴嘴’可將複數個流體朝紙料噴射而 進行混合’或將複數個流體噴射及混合之後導入紙料。具 體的多流體噴嘴，雖不限定於此，但可適當地使用： TrumpJet ( Wetend Technologies 公司）等的三流體噴嘴， TrumpJet CHORD (Wetend Technologies 公司）等的多流 體噴嘴等。多流體噴嘴的例子，是記載於專利文獻1 (曰 本特表2 007-5 〇8129號公報）等，按照需要可參考其內容 。本發明的噴射裝置，也能使用在裝置內部將製紙用藥品 和其他流體混合成一體後進行噴射的裝置，具體而言例如 爲PARETO(Nalco公司製）等。 •28- 201040354 3 .抄紙步驟、精加工步驟 如上述般混合製紙用藥品後的紙料，被送往高位調漿 槽，從高位調漿槽朝抄紙網噴射而進行抄紙。本發明可適 用於各種的抄紙機和抄紙法。作爲抄紙機，例如能使用長 網抄紙機、夾網抄紙機、夾網成形（gap f0rmer )抄紙機 、楊基（Yankee )抄紙機等適當地進行抄紙，其中即使是 質地容易變差的夾網抄紙機，也能有效地發揮本發明的效 Q 果。作爲夾網抄紙機，可列舉夾網成形機、疊網成形機（ on top former)等 ° 本發明之抄紙速度沒有特別的限制，宜爲高速。亦即 ，在高速抄紙時篩網的剪切力變大，若在筛網後添加良率 劑’更容易享受本發明的效果，此外，在高速抄紙時，高 位調漿槽內之紙料和稀釋水的合流變激烈，即使在飾網後 添加良率劑也能讓紙料均一地混合，因此能以高良率製造 出質地良好的紙。本發明之高速抄紙，是指7 0 0m/分鐘以 Q 上的抄紙’由於運用本發明可獲得良好的效果，本發明的 抄紙速度更佳爲800m /分鐘以上，特佳爲丨〇〇〇m /分鐘以上 ，再佳爲1 200m/分鐘以上，最佳爲1 5 00m/分鐘以上。又 ，可預見抄紙機往後會變得更加高速化，只要可獲得本發 明的效果，抄紙速度的上限是沒有限制的。 再者’在本發明，可對抄造的紙實施各種的表面處理 。作爲表面處理，可實施顏料塗布、透明塗料塗布等的表 面塗布，也能實施軋光處理。 在本發明，在紙表面塗布表面處理劑的情況，例如可 -29- 201040354 利用設置在預乾燥器和後乾燥器之間的表面塗布裝置。塗 布裝置，可採用一般使用的，例如報紙用紙用的抄紙機， 一般是使用閘輥施膠塗布機等的塗膜轉印型的施膠塗布機 (size press)，在本發明也能適當地使用。在本發明，使 用這種表面塗布裝置來進行透明塗料塗布的情況，可將澱 粉、聚丙烯醯胺、聚乙烯醇等的表面塗布劑塗布於紙。當 然，在本發明，不實施這種透明塗料塗布亦可。 實施透明塗料塗布之表面塗布劑的種類和組成沒有特 別的限定，作爲用來強化表面強度之水溶性高分子物質， 可單獨或倂用：粗澱粉、氧化澱粉、酯化澱粉、陽離子化 澱粉、氧變性澱粉、醛化澱粉、羥乙基化澱粉、羥丙基化 澱粉等的澱粉；羧甲基纖維素、羥乙基纖維素、甲基纖維 素等的纖維素衍生物；聚乙烯醇、羧基變性聚乙烯醇等的 變性醇；苯乙烯丁二烯共聚物、聚醋酸乙烯、氯乙烯一醋 酸乙烯共聚物 '聚氯乙烯、聚偏氯乙烯、聚丙烯酸酯、聚 丙烯醯胺等。其中，最佳爲塗布表面強度提昇效果優異之 羥乙基化澱粉或羥丙基化澱粉。此外，爲了對紙賦予抗吸 水性，除了前述水溶性高分子物質以外，也能倂用塗布·· 苯乙烯丙烯酸、苯乙烯順丁烯二酸、烯烴系化合物、烷基 (甲基）丙烯酸酯系化合物等的一般的表面上膠劑，在進 行中性抄紙的情況，較佳爲塗布上膠劑的離子性爲陽離子 性的。 在塗布水溶性高分子物質和表面上膠劑所構成的表面 處理劑的情況’水溶性高分子物質和表面上膠劑的混合比 -30- 201040354 例在公知的範圍內進行即可，並沒有特 水溶性高分子物質及/或表面上膠劑的 圍內進行即可，沒有特別的限定。 此外，在塗布顏料的情況，作爲顏 高嶺土、黏土、滑石、二氧化欽、硫酸 鋅、矽酸、矽酸鹽、膠體二氧化矽、緞 )等的無機顏料；塑膠色料等的有機顏 Q 可適當地選擇使用：苯乙烯丁二烯系乳 合成黏著劑；澱粉類、纖維素衍生物等 比例在公知的範圍內進行即可，沒有特 布裝置可使用：刮塗機、棒塗機、氣刀 塗布機、幕式塗布機、計量桿式（rod 布機、閘輥塗布機等。當然，在本發明 布亦可。在實施顏料塗布的情況，紙的 層所含的無機物而增高，在本發明的態; Q 〜50重量％，更佳爲20重量％〜45重量％ 在本發明，可對紙表面實施軋光處 類和處理條件沒有特別的限定，可適當 成之通常的軋光機、軟輥壓（soft nip 輥壓軋光機等的公知裝置，只要按照品 制該等裝置的範圍內設定條件即可。 (質地） 依據本發明的製造方法，能以高良 別的限定。此外， 塗布量在公知的範 料可適當地選擇： 鋇、硫酸鈣、氧化 光白（satin white 料。作爲黏著劑， 膠、聚乙烯醇等的 。顏料和黏著劑的 別的限定。作爲塗 塗布機、逆轉輥式 metering )施膠塗 不實施這種顏料塗 灰分會因顏料塗布 樣，宜爲1 〇重量％ 〇 理，軋光裝置的種 地選擇：金屬輥構 )軋光機、高溫軟 質目標値而在可控 率獲得質地良好的 -31 - 201040354 紙。質地，可根據雷射光透過光變動法之質地指數（參照 紙漿技術時報，28 ( 5 )，1 9 8 5，第3 0-3 5頁）進行評價 。例如，在報紙用紙的情況，質地指數宜爲1 0.0以下， 更佳爲8 ·0以下。在此的質地指數，指數越小代表紙的質 地越良好，質地指數差0.5時可由肉眼判斷質地的差異。 態樣 爲了更詳細地說明本發明的內容，按照本發明的一態 樣而將本發明的內容記載如下。 第1圖係顯示本發明的一態樣之示意圖。在第1圖所 示的實施態樣’製紙用原料（紙料）是進行以下的處理。 亦即，將紙漿、塡料及其他製紙用藥品等在第〗槽（1 2 ) 、第2槽（1 3 )、喂料箱（1 4 )等合流而形成紙料。喂料 箱之紙料濃度約3 %左右。然後，從喂料箱排出的紙料在 第1扇泵（1 5 )和白水合流’而使紙料濃度稀釋成2 %以 下。稀釋後的紙料’使用篩網（】7 )除去異物。離開篩網 的紙料送往高位調漿槽（1 9 )’從高位調漿槽將紙料朝抄 紙網噴射而形成紙網（web )，進—步經由乾燥而製造出 紙。在第1圖所示的態樣，對於經由篩網處理而除去異物 後的紙料，使用噴射裝置（1 8 )噴射良率劑和其他的液體 ’以在紙料中讓良率劑均一地混合。 第2圖所不的態樣，是賴由本發明的多流體噴嘴將良 率劑和從製造過程取出之一部分的紙料等的液體一起噴射 ，而在紙料中讓良率劑混合。在第2圖所示的態樣，是使 -32- 201040354 用问心狀的一· & 體噴嘴（TrumpJet，Wetend Technologies 公司等製）’將紙料和白水、或澄清白水、清水等朝外側 (2 1 )和內價1 ( 23 )噴射，在其間噴射包含良率劑等的製 紙用藥品之液體（22 )。藉由如此般將含有良率劑的液體 朝紙料噴射’可讓良率劑等的製紙用藥品流（22 ) —邊捲 入其他液體流（2 1 )、（ 2 3 )—邊與紙料合流，因此能非 常迅速地讓良率劑均一地遍及紙料中。 Q 第3圖所示的態樣，是從製造過程將紙料的一部分取 出，和良率劑一起從噴射裝置噴射而讓良率劑混合於紙料 中。在第3圖所示的態樣’在紙料通過篩網（3丨）而除去 異物後，將紙料的〜部分取出，分成外側流和內側流，和 良率劑一起使用泵（3 2 )供應給噴射裝置（3 3 )，朝紙料 流噴射。之後’紙料與白水合流後送往高位調漿槽（3 4 ) ’從高位調漿槽將紙料噴射至抄紙網上而形成紙網（web )° 〇 爲了更詳細地說明說明本發明的內容而顯示以下的實 施例’但以下的實施例並非用來限定本發明的範圍。 非有特別的說明’在本說明書中，份' %、ppm分別代表 重量份、重量％及重量ppm。 〔實施例〕 1·紙製造的評價試驗 本發明的評價試驗方法如下所述。 -33- 201040354 <良率的測定方法> 對於高位調漿槽原料、落到抄紙網下的白水（抄紙網 下白水），分別測定固體成分濃度和灰分濃度°依據下式 (1 )測定紙料良率，依據下式（2 )測定灰分（塡料）良 率。灰分的測定，對於高位調漿槽原料和抄紙網下白水， 分別取其固體成分於525 °C灰化而測定其重量° 〔式I〕 紙料良率= l〇〇x ( A-B ) /A ( 1 ) A :高位調漿槽原料的固體成分濃度（g/1 ) B :抄紙網下白水的固體成分濃度（g/1 ) 〔式2〕 灰分良率=100x ( C-D ) /C ( 2 ) C :高位調漿槽原料的灰分濃度（g/1 ) D :抄紙網下白水的灰分濃度（g/1 ) <質地的測定方法> 藉由野村商事製的FMT-MIII (光透過光變動法）來 測定質地指數。所使用的CCD攝影機的光圈（感度）爲 12 ° <紙質等的測定方法> 基重：依據 JIS P 8124: 1998 (ISO 536: 1995) 灰分：依據 JIS P 8251 : 2003。 -34- 201040354 碳酸耗含量：依據JIS P 825 1及JIS P 82 52，算出於 525 °C和900C燃燒時的灰分，依下式（3)算出碳酸與量 〔式3〕 碳酸鈣（％ ) = ( E-F ) xG/H ( 3 ) E :於5 2 5 °C燃燒時的灰分（％ ) F :於900°C燃燒時的灰分（％ ) 0 G : 100 =碳酸鈣的分子量 Η : 44 =二氧化碳的分子量 <紙面缺陷的評價> 在抄紙機製造紙的過程中產生的缺陷當中，藉由設置 於抄紙機之缺陷檢測機所檢測的缺陷（大小爲縱4mmx橫 4mm以上），從單位時間產生的數目用下式（4 )算出每 天的紙面缺陷數。 〇 〔式4〕 每天產生的缺陷數（個/天）=I/JxK (4) I :缺陷檢測器所檢測出的缺陷數（個） J:單位時間（小時） K : 24 (換算成天） <斷紙的評價> 計算抄紙機運轉中每天（2 4小時作業）的斷紙次數。 -35- 201040354 <纖維分布> 藉由纖維分析裝置（Lorentzen&Wettre製的 FiberTester)測定纖維分布’而求出紙料土 甲以上纖維 所占的比例。 2 .製紙用藥品的評價試驗 <使用藥品> 本實施例是使用以下的藥品。 •藥品1 :乳化液型聚丙烯醯胺系良 SOMAR公司製） •藥品2 :乳化液型聚丙烯醯胺系良 SOMAR公司製） .藥品3 :乳化液型聚丙烯醯胺系良 SOMAR公司製） 率劑（R-3 00， 率劑（R-22 0， 率劑（R -1 0 1， .藥品4:分散型聚丙燒酸胺系良 •藥品5 :分散型聚丙烯醯胺系良 HYMO公司製） •藥品6:分散型聚丙燦酸胺系良 HYMO公司製） HYMO公司製） ND3 00 率 齊!1 ( DR5 700 率劑（SC924 ， <測定方法> •分子星.依據極限黏度法之雷& 恿平％分子量。 • 36 - 201040354 •陽離子電荷密度：取〇_lg/L的樣品水溶液，使用 1/1 000當量的聚乙儲擴酸鉀（PVSK)藉由自動滴定裝置 (BTG製’ MUTEK PCD-04)來測定陰離子要求量，依據 下式（5)算出陽離子電荷密度。 〔式5〕 陽離子電荷密度（meq/g) =L/MxN (5) 0 L:陰離子要求量（peq/L ) Μ ··樣品溶液濃度（g/L) N : 1000 ' •黏度··對於樣品之〇·3重量％水溶液，使用B型黏 度計（東京計器製的BL型黏度計）以25°C、6〇rpm的條 件進行測定。 •粒徑··使用經由氯化鈉將導電度調整成1 〇〇mS/m的 水，將樣品稀釋成250mg/L ’使用粒徑Zeta電位測定裝置 G (Malvern 製的 ZETASIZER3000HSA )來進行測定。 •最大凝集値：使用下述的試驗用試料’設藥品1的 最大凝集値爲1 00 ’評價各藥品的最大凝集値。數値越大 ，代表藥品的凝集力越高。 (試驗用試料） 將DIP 8 0份、τ Μ P 1 5份、針葉樹漂白牛皮紙發（ ΝΒΚΡ ) 5份混合解離而調製成紙槳糊’在該紙發糊中’添 加相對於紙漿固體成分爲40%之輕質碳酸銘作爲塡料’經 -37- 201040354 由自來水將紙料濃度稀釋成0.5重量％之後，添加氯化鈉 而使導電度成爲l〇〇mS/m，如此調製出。 將 200網目的抄紙網裝設在動態濾水罐（DDJ : D y n a m i c D r a i n a g e J a r )，將依上述方法調製的試驗用試 料以700rpm攪拌並將濾液循環，將濃度0.03重量％水溶 液的樣品，以添加率成爲〇 . 〇 3重量％的方式投入紙料，在 添加樣品後立刻，藉由光分散分析裝置（RANK BROTHERS製的PDA2000 )來測定液體的透過光強度（表 示凝集程度），根據其透過光強度的變化來評價凝集程度 最大時的凝集程度。 〔表1〕 表1 藥品 形態 構造 分子量 g/mol 陽離子電荷密度 meq/g 黏度 mPa · S 粒徑 nm 最大 凝集値 樂品1 乳化液 直鏈 2000萬 1.7 600 1000 300 樂品2 乳化液 直鏈 2000萬以上 2.3 750 800 105 藥品3 乳化液 支鏈 2000萬以上 2.1 800 750 125 藥品4 分散 直鏈 1500萬 2.1 120 120 115 樂品5 分散 直鏈 700萬 2.2 100 100 50 藥品6 分散 支鏈 50萬 9.8 40 80 55 表1顯示藥品的評價試驗結果，根據此結果得知以下 的事情。 從藥品1〜4和藥品5、6的比較得知，若分子量爲 1 000萬以下，凝集力弱，亦即良率效果低。從藥品4和藥 品5的比較得知，即使在相同形態及構造下，也是分子量 越高凝集力越強。又從藥品1 ~ 5和藥品6的比較得知，即 -38- 201040354 使電荷密度高，若分子量低則凝集力小。從藥品1〜3和藥 品4的比較得知，在分散型的形態的情況，即使分子量稍 低，仍具有與乳化液型同等級的凝集力。 3 .平版印刷用報紙用紙的製造 〔實施例1〕 將DIP (游離度200ml) 80份、TMP (游離度100ml 〇 )15份、針葉樹漂白牛皮紙漿（NBKP，游離度600ml) 5 份混合解離而調製成紙漿糊，在該紙漿糊中，添加相對於 紙漿固體成分爲20%之輕質碳酸鈣作爲塡料，添加相對於 紙漿固體成分爲〇 . 5 %之陽離子變性澱粉作爲內添紙力增 強劑，添加相對於紙漿固體成分爲2 %的硫酸鋁而調製成 紙料。游離度是表示加拿大標準游離度（CSF )，紙料中 1 mm以上纖維所占比例爲長度加權約3 3 %。 接著，將該紙料通過篩網而除去異物後，在5秒內可 Ο 到達高位調漿槽的場所將良率劑朝紙料噴射（第1圖）。 良率劑的噴射，是使用具有第2圖所示的三流體噴嘴之噴 射裝置（TrumpJet，Wetend Technologies 公司製）來進行 ，由紙料流取出的紙料是從三流體噴嘴的外側和內側噴射 ，包含藥品1 (REALIZER R-300，SOMAR公司製）的液 體是從紙料的噴射流之間噴射（第3圖）。良率劑的添加 量，相對於紙料爲0.020重量％。從三流體噴嘴的外側噴 射的流體（噴射流）的壓力是比紙料的內壓高3 . Ob ar，從 三流體噴嘴的內側噴射的流體（混合流）壓力是比紙料的 -39- 201040354 內壓高1 _ 0 b ar。良率劑添加時的紙料濃度爲1 .丨重量％。 將該紙料送往模組噴射型的高位調漿槽，從高位調漿 槽朝夾網型的抄紙網上噴射紙料，以抄紙速度1 2 5 Om/分 鐘、基重43 g/m2的條件藉由中性抄紙製造出報紙用紙原 紙。 在該原紙上’使用閘輥塗布機，將羥乙基化澱粉及陽 離子性表面上膠劑（苯乙烯/丙烯酸酯共聚物）所構成的 表面塗布劑（羥乙基化澱粉的固體成分濃度爲6 · 0 %，表 面上膠劑的固體成分濃度爲〇·3〇%)均等地塗布於毛酕面 、抄紙網面這兩面’藉此獲得平版印刷用報紙用紙。羥乙 基化澱粉及陽離子性表面上膠劑的塗布量分別爲〇 . 7 g/m 2 (兩面合計）及0.04g/m2 (兩面合計）。 〔實施例2〕 除將實施例1的良率劑添加率改爲0 · 〇 1 8重量％以外 ’與貫施例1同樣地獲得平版印刷用報紙用紙。紙料中 1 mm以上的纖維所占比例及良率劑添加時的紙料濃度如表 2所示（以下的實施例及比較例是同樣的）。 〔實施例3〕 除將實施例1的良率劑添加率改爲0.015重量。/。以外 ’與實施例1同樣地獲得平版印刷用報紙用紙。 〔實施例4〕 -40 * 201040354 除將實施例1的良率劑變更爲藥品2 (R-22〇, S OMAR公司製）、良率劑添加率改爲0.018重量％以外， 與實施例1同樣地獲得平版印刷用報紙用紙。 〔實施例5〕 除將實施例1的良率劑變更爲藥品3 ( R-1 01， S Ο M A R公司製）、良率劑添加率改爲〇 · 〇 1 8重量％以外， 0 與實施例1同樣地獲得平版印刷用報紙用紙。 〔實施例6〕 除將實施例1的良率劑變更爲藥品4 ( ND3 00，HYMO 公司製）、良率劑添加率改爲0.018重量％以外，與實施 例1同樣地獲得平版印刷用報紙用紙。 〔實施例7〕 Q 除將實施例1的良率劑變更爲藥品5 ( DR5 700 ’ Η Υ Μ Ο公司製）、良率劑添加率改爲0 · 〇 1 8重量％以外’ 與實施例1同樣地獲得平版印刷用報紙用紙。 〔實施例8〕 除了使用 DIΡ (游離度 2 0 0 m 1 ) 1 0 0份所調製成之紙 漿糊以外，與實施例1同樣地獲得平版印刷用報紙用紙。 又1 m m以上的纖維占紙料比例約2 5 %。 201040354 〔實施例9〕 除了使用DIP (游離度200ml ) 45份、TMP (游 100ml ) 35份、針葉樹漂白牛皮紙漿（NBKp，游 6 0 0 m 1 ) 2 0份混合解離而調製成的紙漿糊以外，與實 1同樣地獲得平版印刷用報紙用紙。又1 mm以上的纖 紙料比例爲長度加權約50%。 〔比較例1〕 對於以與實施例1同樣的方式調製成的紙料，不 噴射裝置，在藉由篩網處理紙料前之扇栗出口側（第 所示的第2扇杲的出口側）添加藥品1 ( REALIZER I ’ SOMAR公司製）0.030重量％以外，與實施例丨同 獲得平版印刷用報紙用紙。 〔比較例2〕 除將良率劑添加率改爲0.0 3 5重量％以上，比 1同樣地獲得平版印刷用報紙用紙。 〔比較例3〕 對於以與實施例1同樣的方式調製成的紙料，不 噴射裝置’朝經由篩網處理後的紙料（第1圖所示的 後）添加藥品 1 ( REALIZER R-3 00，SOMAR 公司 〇 ‘ 〇 2 3重量％以外，與實施例1同樣地獲得平版印刷 紙用紙。 離度 離度 施例 維占 使用 1圖 -300 樣地 較例 使用 篩網 製） 用報 -42- 201040354 〔表 2-1 〕 表2 良率劑 良率劑 添加場所 噴射裝置 良率劑添加 時的紙料濃 度 (%) lmm以上的 纖維占紙料 的比例 (%) 形態 構造 分子量 實施例1 藥品1 乳化液 直鏈 2000萬 高位調漿槽前 三流體噴嘴 1.1 33 實施例2 藥品1 乳化液 直鏈 2000萬 高位調槳槽前 三流體噴嘴 1.3 33 實施例3 藥品1 乳化液 直鏈 2000萬 高位調漿槽前 三流體噴嘴 1.4 33 實施例4 藥品2 乳化液 直鏈 2000萬以上 高位調漿槽前 三流體噴嘴 1.3 35 實施例5 藥品3 乳化液 支鏈 2000萬以上 高位調漿槽前 三流體噴嘴 1.2 33 實施例6 藥品4 分散 直鏈 1500萬 高位調漿槽前 三流體噴嘴 1.2 32 實施例7 藥品5 分散 直鏈 700萬 高位調漿槽前 三流體噴嘴 1.5 34 實施例8 藥品1 乳化液 直鏈 2000萬 高位調漿槽前 三流體噴嘴 1.1 26 實施例9 藥品1 乳化液 直鏈 2000萬 高位調漿槽前 三流體噴嘴 1.1 48 比較例1 藥品1 乳化液 直鏈 2000萬 第2扇泵出口 ml· >>、、 1.5 33 比較例2 藥品1 乳化液 直鏈 2000萬 第2扇泵出口 無 1.1 33 比較例3 藥品1 乳化液 直鏈 2000萬 篩網後 -ήγρ 1.2 34201040354 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a method of manufacturing paper. More particularly, the present invention relates to a method of producing paper suitable for supplying various printing methods such as lithography, gravure printing and the like. [Prior Art] 0 One of the important qualities required for printing paper is to prevent printing from the back, which is called "transparent" phenomenon. Among the printing and brushing papers, especially newspapers, since the basis weight is low and the weight is light, and most of them are printed by using a permeation-drying type ink without a cold-drying type lithographic printing machine through a thermal drying process, it is prevented from being transparent. Technology is getting harder and harder. In general, in order to suppress the transparency, it is most effective to increase the opacity of the paper. As a method of increasing the opacity of the paper, it is effective to blend the dip material (higher specific scattering coefficient and greater opacity enhancement effect) in the paper to increase the ash. However, in recent years, in the manufacture of paper, with the increase in the rate of distribution of waste paper in paper, the speed of paper production, neutralization, and the wire part of the wire part. Progress, these technological trends, will reduce the yield of pulp raw materials and dips (or ash) in paper stock, making paper high-ash differentiation technology more and more difficult. According to recent trends in papermaking technology in this way, it is important to develop a printing paper that can produce high ash in paper with high yield. In general, in order to increase the yield of pulp and dip, it is the use of a yield enhancer (-5-201040354 yield agent), and the following techniques have been proposed for the addition of a yield agent. Patent Document 1 (Japanese Laid-Open Patent Publication No. 2007-508129) discloses that a holding chemical substance is mixed with fresh water or a circulating liquid before supplying a holding chemical substance to a liquid flow, and then the holding chemical substance solution is supplied to the liquid. The flow allows a small amount of chemical to be efficiently mixed into the liquid stream. Patent Document 2 (JP-A-2002-227-90) discloses that a cationic cationic polymer and/or a polycondensation cationicity are added to the inlet of the feed tank or the fan pump or at the inlet of the screen. A substance is added to the inlet or outlet of the screen to add a cationic cationic water-soluble polymer, thereby increasing the yield. In the case of papermaking using a module jet type paper machine, it is described in the patent document 3 (JP-A-2004-176184) that the yield increase is increased in the papermaking raw material and the white water returning to the high head box. To increase the yield. [Patent Document 1] Japanese Patent Laid-Open Publication No. JP-A No. Hei. No. 2002-227090 (Patent Document No.). In order to improve the yield during paper making, a medicine called a yielding agent is added to the paper stock. The yield agent added to the paper stock forms a weak agglomeration with the pulp fibers and the dip in the paper stock, thereby improving the yield of -6-201040354 at the time of papermaking. On the other hand, when the amount of the yield agent added is too large, if the yield agent causes excessive agglomeration of the paper stock, the texture of the paper is deteriorated, and the paper is uneven. In order to improve the yield in such a manner that the texture of the paper is not deteriorated, it is important to make the formation of the agglomerated state of the paper uniform by sufficiently mixing the yield agent in the paper stock. As one of the methods, it is conceivable to add a yield agent to the paper stock at a very early stage than when the paper stock is sprayed onto the papermaking net, and to sufficiently disperse the yield agent in the paper stock. However, there is ample time to add the yield agent to the paper stock to improve the mixing state, but when the paper material passes through the screen or the like, the mechanical shear load causes the yield agent to be inferior, or the yield is good. The effect of the agent will decay over time, so a large amount of yield agent must be added. Thus, it may be considered to add the yield agent just before the paper material is ejected to the papermaking web, i.e., before the paper stock is about to be fed into the high level pulping tank. According to this method, although the effect of the yield agent is attenuated over time or subjected to mechanical shearing force, the effect of the yield agent is lowered, but the time for the yield agent to be dispersed in the paper material is extremely short, and The flow of the material becomes a laminar flow, and the yield agent and the paper material are not sufficiently mixed to make the agglomeration of the paper material non-uniform. Therefore, the texture of the paper is deteriorated, and in an extreme case, problems such as paper breakage may occur. In this way, there is a trade-off between the improvement in yield and the texture, and it is expected to develop a technology that does not deteriorate the texture and can fully exert the effect of the yield agent. In particular, in the case of printing paper in which a large amount of enamel is blended, it is necessary to maintain the high yield of ash and to manufacture paper with good workability. In view of the above-described problems, the inventors of the present invention have been made to solve the above problems in order to provide a method for producing high-ash paper at a high yield without deteriorating the texture and workability of the paper 201040354. As a result of intensive investigation, it was found that the paper stock having a paper concentration of 2% by weight or less before ejecting the paper stock from the high-position slurry tank to the papermaking net is sprayed together with other liquids for co-production, in particular, The multi-fluid nozzle spraying device of the concentric structure jets the paper-making medicine together with other liquids to join together, whereby the paper-making medicine can be quickly mixed with the paper stock, and the effect of the paper-making medicine can be maximized. Thus, the completion of the present invention is reached. The present invention is not limited to this and includes the following inventions. (1) A method for producing paper having an ash content of 8% by weight or more, comprising: mixing one or more paper-making drugs together with other liquids for a paper material having a concentration of 2% by weight or less. (2) In the method according to (1), one or more types of papermaking chemicals are ejected together with other liquids toward the paper stock by an injection device having a multi-fluid nozzle having a concentric structure. (3) The method according to (1) or (2), wherein the papermaking drug comprises a yielding agent. (4) The method according to (3), wherein the yield agent is a cationic yield agent, and the weight average molecular weight according to the ultimate viscosity method is 10,000,000 or more, and the cationic charge density is 〇. 5meq/g or more. (5) The method according to (3) or (4), wherein the yield agent is 0. The B-type viscosity of the 3 wt% aqueous solution is 2,000 m P a · s 201040354 or less at a temperature of 25 ° C. In addition, when a multi-fluid nozzle having a concentric structure is used, the paper-making drug flow and the other liquid flow are mixed and sprayed, and when the multi-fluid nozzle is operated, the fibers contained in the paper material are entangled, deposited, and used for papermaking. Sediment (precipitates, sediments, etc.) may be generated, which may cause paper breaks in the paper machine and paper defects in the paper. The sediment is easily formed in the interior of the multi-fluid nozzle and at the place where the fluid merges, and in the case where the multi-fluid nozzle has a pump that supplies the fluid with pressure, it is easily formed inside the pipe connected to the pump, and the like. Thus, the inventors of the present invention have intensively studied the technique of retaining the advantages of using a multi-fluid nozzle to add a medicine for papermaking and controlling the occurrence of sedimentation of a multi-fluid nozzle, and found that the outermost side of the fluid nozzle is controlled by the flow of excess fluid. The liquid concentration and pressure of the nozzle can suppress the occurrence of sediment when the multi-fluid nozzle is used, and can efficiently mix the paper-making medicine with the paper stock. That is, in the present invention, the concentration of the liquid ejected from the outermost nozzle Ο of the multi-fluid nozzle can be made 〇. 1~2. 0% by weight, and the liquid concentration ejected from the innermost nozzle of the multi-fluid nozzle is lower than the liquid concentration ejected from the outermost nozzle. 1% by weight or more. Further, in the present invention, the liquid ejection pressure ejected from the outermost nozzle of the multi-fluid nozzle can be made higher than the pressure of the paper stream by three. More than 1 bar. Further, the liquid ejecting pressure ejected from the outermost nozzle of the multi-fluid nozzle can be made higher than the liquid ejecting pressure ejected from the innermost nozzle by 2 · 2b ar or more. Therefore, the present invention is not limited thereto, and further includes the following invention: -201040354 (6) In the method according to any one of (2) to (5), the injection from the outermost nozzle of the multi-fluid nozzle is performed The liquid concentration is 〇. 1~2. 0% by weight, and the concentration of the liquid ejected from the nozzle on the innermost side of the multi-fluid nozzle is less than 1% by weight or more than the liquid ejected from the outermost nozzle. (7) The method according to any one of (2) to (6), wherein the liquid ejection pressure ejected from the outermost nozzle of the multi-fluid nozzle is higher than the M force of the paper stream by 3 _ 1 bar or more. (8) The method according to (7), wherein the liquid ejection pressure ejected from the outermost nozzle of the multi-fluid nozzle is higher than the liquid ejection pressure ejected from the innermost nozzle. More than 2bar. (9) The method according to any one of (1) to (8), wherein the other liquid is one or more selected from the group consisting of paper stock, white water, clarified white water, and clean water. (1) In the method according to any one of (1) to (9), the paper stream is a paper stream which passes through the screen. According to the present invention, the paper-making medicine containing the yield agent can be quickly and uniformly mixed with the paper stock. Further, according to the present invention, the effect of the medicine for papermaking can be sufficiently exerted, so that the amount of the medicine to be added can be reduced. Moreover, high-yield paper can be produced at a high yield without deteriorating the texture and workability of the paper. [Embodiment] 1. Paper The method for producing paper having an ash content of 8% by weight or more according to the present invention comprises: a paper-making drug such as a rate agent and other liquids are sprayed together with a paper having a concentration of 2% by weight. The paper produced by the present invention is increased in the amount of paper added to paper by -10-201040354, and its high opacity is suitable for various printing purposes. Further, the paper of the present invention does not contain paperboard. The paper obtained by the present invention can be printed by, for example, lithographic printing such as cold lithography or hot lithography, gravure printing such as gravure printing, or printing by letterpress printing. Therefore, the paper produced by the present invention can be used, for example, as an upper-quality printing paper, a medium-sized printing paper, a newspaper paper, a book paper, a raw material for various coated papers, an information recording paper, or the like. ¢) The papermaking system of the present invention is not particularly limited. It is a neutral paper or an acid paper. When the paper of the present invention contains a large amount of calcium carbonate, it is preferably a neutral paper. Specifically, in the present invention, the pH of the paper surface is preferably 6. 0~9. 0 ’better is 7. 0 to 8 · 0 〇 The ash of the paper of the present invention is 8% by weight or more, and according to the present invention, the yield of high ash paper can be effectively improved, so the ash content is preferably 10% by weight or more and more preferably 12% by weight. /. The above is particularly preferably 15% by weight or more. The effect of the present invention can be fully enjoyed when manufacturing such a high ash paper. The upper limit of the ash content is not limited. If the strength and workability of the paper are taken into consideration, it is preferably 4% by weight or less. In general, ash is representative of the amount of inorganic matter contained in the paper' which essentially reflects the amount of dip in the paper. The paper's ash is contained in: from the new dip added to the paper, and from the pulp raw materials such as D IP (waste paper pulp, deinked pulp). The ash brought in from DIP contains a large amount of calcium carbonate, but it also contains inorganic components other than calcium carbonate. The ratio of calcium carbonate to other inorganic components varies depending on the type of waste paper and the recycling status of waste newspapers and waste magazines. . The ash of the present invention is determined by the method of setting the combustion temperature to 525 ± 25 ° C according to the ash test method of -11 - 201040354 paper and paperboard specified in ns P 825 1. The material to be used in the paper of the present invention is not particularly limited as long as it is added so that the ash content is 8 wt% or more, and for example, calcium carbonate such as heavy calcium carbonate or light calcium carbonate; titanium oxide; Clay, cerium oxide, talc, crucible soil, calcined kaolin, delaminated kaolin, magnesium carbonate, strontium sulphate, oxidized fresh, oxidized sand, amorphous silica sand, hydrazine, calcium hydroxide, magnesium hydroxide , inorganic materials such as zinc hydroxide, titanium oxide, and bentonite; organic materials such as urea-formaldehyde resin, polystyrene resin, melamine resin, acid resin, and fine hollow particles; they may be separately or appropriately combined. More than one kind to use. In addition, recycled materials made from paper sludge or deinked foam can also be used. In the present invention, it is preferred to use calcium carbonate as a dip because of the viewpoint of being inexpensive and having excellent optical characteristics. In addition, a calcium carbonate-cerium oxide composite (for example, a light calcium carbonate-ceria composite described in JP-A-2003-212539, JP-A-2005-219945, etc.) can be used. Compound dip. In the acid papermaking, the tanning materials used in the above-mentioned neutral papermaking are used in addition to the acid solubility, and they may be used alone or in combination of two or more. In the present invention, since the opacity and whiteness of the paper can be improved at a low cost, it is preferred to mix the calcium carbonate in the form of a dip. The paper of the present invention preferably has a calcium carbonate content of 5 parts in the case of non-coated paper based on the viewpoint of improving opacity and whiteness. The above is more preferably 6% by weight or more, particularly preferably 7% by weight or more. In the case of coated paper, the carbon content of the base paper of carbonic acid -12-201040354 is preferably 5 parts by weight. /. The above is more preferably 6% by weight or more, and particularly preferably 7% by weight or more. The pulp used in the present invention is not particularly limited, and a general paper sheet can be used. Specifically, in addition to general wood pulp, it can also be used: cotton linters, hemp, bagasse, kenaf, needle grass, straw, and the like. Non-wood pulp; semi-synthetic fibers such as hydrazine and acetate; synthetic fibers such as polyolefin, polyamide, polyester, and the like. Specifically, mechanical pulp (MP), deinked pulp (DIP, also referred to as waste paper pulp), hardwood kraft pulp (LKP), and conifer kraft (NKP), which are generally used as papermaking materials for paper pulp, can be suitably used. The 'may be used in combination with one or more of them. As the mechanical pulp, wood pulp (GP), refined wood pulp (RGP), thermomechanical pulp (TMP), chemical thermomechanical pulp (CTMP), chemical honing pulp (CGP), semi-chemical pulp (SCP) can be cited. Wait. Generally, if the blending ratio of waste paper is increased, negatively charged fine particles such as ink components flow into the papermaking system in a large amount, and these negatively charged particles repel each other 且' and are not easily combined with the same negatively charged pulp fibers, so that the negatively charged The colloidal particles accumulate in the papermaking system, and the effect of the cationic yield agent is significantly reduced. In this regard, when the present invention is applied to a large amount of DIP (it is easy to reduce the yield), it is particularly advantageous to sufficiently exert the effect of the yield agent or the like. Therefore, in one aspect of the invention, the DIP ratio in the pulp is preferably 10% by weight or more, more preferably 15% by weight or more, and particularly preferably 20% by weight or more. As the raw material of DIP, it can be suitably used: classified waste paper such as top quality paper, medium quality paper, lower grade paper, newspaper 'advertising list' magazine, etc., mixed with such unclassified waste paper, including carbon paper, thermal paper, non-carbon- 13- 201040354 Office waste paper such as paper. The basis weight of the paper of the present invention can be set according to the use without particular limitation, and is usually 225 g/m2 or less, and is usually 30 to 150 g/m2, preferably 30 to 12 g/m2, as the printing paper. (2) The papermaking method of the present invention is a method of producing a paper according to the present invention, which comprises spraying a papermaking product such as a yielding agent together with another liquid to a paper having a concentration of 2% by weight or less. mixing. Therefore, in the present invention, a papermaking drug such as a yielding agent is a paper material which is added to a lower concentration of 2% by weight or less. In general, paper stocks including pulp, dips, various medicines, etc. are mixed in a mixing chest, a paper chest, a machine chest, a feed tank, etc., and are gradually diluted to a high level. The slurry tank is sprayed from the high-position slurry tank to the papermaking net to form paper. In the feed box or the like, the solid content concentration of the paper stock is usually 3% by weight or more, and then the paper material is diluted to 2% by weight or less by white water or the like. In the present invention, the paper is diluted to 2% by weight or less. Add a yield agent and other paper-making drugs. When adding a papermaking drug, the preferred paper stock concentration is 1. 8 wt% or less, more preferably 16 wt% or less. In addition, although the reason is not clear, when the proportion of fibers exceeding 1 mm in the fibers contained in the paper stock is large, the fibers are easily entangled with each other, and the resulting fiber lump and sediment may constitute paper defects and papermaking processes. One of the reasons for the paper breakage, therefore, in the present invention, the fiber amount of the entire pulp fiber relative to the high-level pulping tank is preferably 1 mm or more in length, and is preferably length-weighted (length -14 - 201040354 weighted) by 50% or less. Good length is less than 4 〇%. (Liquid concentration) In a preferred embodiment of the present invention, the paper manufacturing method of the present invention is to use a multi-fluid nozzle spray device having a concentric structure to form a paper-making medicine such as a yield agent together with other liquids. The mixture is sprayed toward the paper stream to be mixed, and the liquid concentration ejected from the outermost nozzle of the multi-fluid nozzle is preferably 0 〇·1 to 2 · 0% by weight. The liquid concentration ejected from the outermost nozzle of the multi-fluid nozzle is preferably 〇·3 wt% or more, particularly preferably 0. More than 5 wt%. Further, the concentration of the liquid ejected from the outermost nozzle of the multi-fluid nozzle is preferably 1 . 8 wt% or less, especially preferably 1. 6 wt% or less. Furthermore, in the present invention, the concentration of the liquid ejected from the innermost nozzle of the multi-fluid nozzle is lower than the concentration of the liquid ejected from the outermost nozzle. 1% by weight or more, more preferably 0%. When the amount is 3% by weight or more, the effect of the present invention can be increased. In this way, the concentration of the liquid ejected from the outermost nozzle of the multi-fluid nozzle is lowered, and the concentration of the liquid ejected by the innermost nozzle of the multi-fluid nozzle is lower than the concentration of the liquid ejected from the outermost nozzle. This enables the liquid streams to be entangled with each other, and allows the paper-making medicine to be quickly combined and mixed with the paper stock. Further, it is possible to suppress the occurrence of sedimentation (submerged matter, deposits, etc.) when the multi-fluid nozzle is used, and it is possible to prevent paper breakage of the paper machine and occurrence of paper surface defects. According to the present invention, the detailed reason for suppressing the occurrence of sinking when using a multi-fluid nozzle is not clear, but the present invention is not limited thereto. However, it is presumed that: -15- 201040354 by reducing the liquid ejected from the multi-fluid nozzle The concentration can reduce the accumulation and adhesion of solid components containing fibers in the inside of the multi-fluid nozzle and the raw material piping, and the effect of the medicine can be effectively exerted by lowering the liquid concentration, and as a result, the formation of sediment can be suppressed. (Spray Pressure) In a preferred embodiment of the present invention, the paper manufacturing method of the present invention is to use a multi-fluid nozzle spray device having a concentric structure to form a paper-making medicine such as a yield agent together with other liquids. The liquid ejecting pressure is ejected toward the paper stream, and the liquid ejecting pressure ejected from the outermost nozzle of the multi-fluid nozzle is preferably higher than the pressure (internal pressure) of the confluent paper stream by more than 3 · 1 b ar. The liquid injection pressure 'ejected from the outermost nozzle of the multi-fluid nozzle is better than the pressure (internal pressure) of the confluent paper stream. More than 5bar' is especially good for the tube 4. Ob ar above. In addition, if the liquid injection pressure ejected from the outermost nozzle of the multi-fluid nozzle becomes an excessively extreme high pressure, the liquid and the paper material cannot be ejected from the high-position slurry tank in a uniformly mixed manner, which may cause deterioration in texture, and thus The liquid injection pressure of the nozzle on the outermost side of the fluid nozzle is not higher than the pressure (internal pressure) of the paper stream to be combined. 5bar ° so that the liquid jet pressure ejected from the outermost nozzle of the multi-fluid nozzle is higher than the general range' can suppress the occurrence of the multi-fluid nozzle (sink, sediment, etc.), and prevent the paper machine Paper breaks in paper breaks and paper occur. Incidentally, for example, a spray device having a three-fluid nozzle (TrumpJ et), which will be described later, 'the liquid injection pressure ejected from the outermost nozzle of the multi-fluid nozzle is better than the confluent flow-16-201040354 The pressure (internal pressure) is high 2. Around Obar, it is generally done under such pressure. According to the present invention, although the detailed reason for suppressing the occurrence of sedimentation of the multi-fluid nozzle is not clear, the present invention is not limited thereto, but it is presumed that the liquid is ejected by the liquid ejected from the outermost nozzle of the multi-fluid nozzle. When the paper stock from the paper stream is not easily flown into the front end of the injection portion of the multi-fluid nozzle and the inside of the injection portion, it is possible to physically prevent the entanglement of the fibers contained in the paper material from being deposited locally, and as a result, the sediment can be suppressed. form. Further, in a preferred aspect of the invention, the liquid ejection pressure ejected from the outermost nozzle of the multi-fluid nozzle is preferably higher than the liquid ejection pressure ejected from the innermost nozzle. More than 2bar. By ejecting the liquid in this manner, the liquid streams can be entangled with each other, and the paper-making medicine can be quickly joined and mixed with the paper stock. Further, when the liquid injection pressure injected from the innermost nozzle is extremely low, or the pressure difference between the outer injection pressure and the inner injection pressure is extremely low, the pressure difference may cause the injection from the outermost nozzle. The liquid enthalpy or the like is mixed into the ejection port that is ejected from the inside, and the liquid ejected from the innermost nozzle cannot be sufficiently ejected from the nozzle. From this point of view, the liquid ejection from the outermost nozzle of the multi-fluid nozzle is ejected. The pressure should not be higher than the liquid injection pressure of more than 3 _5bar from the innermost nozzle. (Additional place and time point) In a preferred aspect of the present invention, a place for adding a medicine for papermaking such as a yield agent is between the feed box and the high-level slurry tank. In general, the paper stock which has been mixed in a feeding tank or the like is diluted by white water or the like by a fan pump, etc., and then removed by a cleaner, a screen, etc., and then sent to the -17-201040354. The high position paddle is sprayed toward the paper net. In the present invention, it is preferable to add a medicine for papermaking to a paper stock which has passed through the teacher's net, in the place where the medicine for papermaking such as a yielding agent is added. In order to allow the yield agent to be thoroughly mixed with the paper stock, the yield agent is added to the paper stock before passing through the screen, but in the present invention, by adding the papermaking medicine to the paper stock after the laying of the net, By avoiding the mechanical shearing force that is received when passing through the screen, the effect of the paper-making medicine such as the yield agent can be sufficiently exerted without being affected. In other words, if a yielding agent or the like is added to the paper stock before passing through the screen, the paper-making medicine such as the yielding agent can be uniformly dispersed, but the paper-making medicine such as the yielding agent and the pulp and the mash are aggregated. It will be destroyed when passing through the screen' and may result in a decrease in yield improvement. The screen for removing foreign matter ' is not particularly limited, and a screen basket which can be generally used, for example, can use an opening having a circular hole or a slit shape. Specifically, it is also possible to use a plurality of different screens such as openings. In one aspect, foreign matter larger than the opening of the screen can be removed from the stock, and the stock is accelerated by the rotating blades, and the centrifugal force is used to push the foreign matter outward. Further, in the present invention, other foreign matter removing means such as a cleaner can be used in addition to the laying of the net. Here, the apparatus for removing foreign matter from the paper stock is roughly divided into two, that is, a screen for removing large foreign matter, and a (vacuum) cleaner for removing heavy foreign matter, usually by appropriately combining them from paper. Remove foreign matter. In the present invention, the time of adding the medicine for papermaking is not particularly limited, but it is preferably within 5 seconds before the paper is ejected from the high-position pulping tank. By adding a yield agent or the like at a stage immediately before the paper is ejected from the high-level slurry tank by -18-201040354, the effect of the medicine such as the yield agent can be prevented from attenuating with the passage of time, and the effect of the medicine can be made. Play to the maximum. The time of adding the medicine for papermaking of the present invention is more preferably within 4 seconds before the paper material is ejected from the high level pulping tank, and is preferably about 2 seconds before the paper material is ejected from the high level mixing tank. On the other hand, in order to sufficiently ensure the mixing of the medicines such as the yield agent, it is preferable to eject the paper stock from the high-position pulping tank. 5 seconds or more before 0 Adding paper-making drugs. (Drug for Papermaking) The papermaking drug to be added to the paper stock of the present invention is not particularly limited. Various chemicals can be used singly or in combination. Specifically, as the medicine for papermaking of the present invention, for example, a yield agent, a water filter enhancer, a coagulant, aluminum sulfate, bentonite, cerium oxide, a sizing agent, a dry paper strength enhancer, and a wet paper force can be used. A paper-making drug such as a reinforcing agent, a bulking agent, a tanning agent, a dye, an antifoaming agent, a bismuth ultraviolet ray preventing agent, a fading preventing agent, a picth inhibitor, and a slime inhibitor. Among them, based on the viewpoint that the effect of the present invention can be sufficiently enjoyed by mixing with a paper material in a short period of time, it is preferable to add a yield agent as a medicine for papermaking. In addition to the yield agent, the papermaking drug of the present invention can be suitably used, and examples thereof include a polypropylene phthalamide polymer, a polyvinyl alcohol polymer, a cationic starch, various modified starches, a urea formaldehyde resin, and melamine. A dry paper strength enhancer such as formaldehyde resin; an internal moistening paper strength enhancer such as polyamidamine polyamine epichlorohydrin resin: rosin-based sizing agent, AKD-based sizing agent, ASA-based sizing agent, Petroleum-19- 201040354 is a sizing agent, a neutral rosin sizing agent, etc. (Beet Rate Agent) According to the present invention, in the case where a yield agent is added, the type of the yield agent is not particularly limited, and a mixed system of an organic yield agent, an inorganic yield agent, or a plurality of yield agents may be used. The yield agent referred to in the present invention is a paper-making medicine for improving the yield of pulp and dip, and even if it is sold under the name of a water-repellent enhancer or a coagulant, as long as it has a yield improvement effect, it belongs to The yield agent of the present invention. In the present invention, since the paper-making drug can be mixed with the paper material in a very short time, even a fine yield agent whose effect changes over time can be suitably used, and in the present invention, a polymer-based yield agent should be used. . Further, the amount of addition of the yield agent is preferably 400 ppm or less, more preferably 30,000 ppm or less, and particularly preferably 200 ppm or less, based on the solid content of the pulp. If the amount of the yield agent added is too large, the cohesive force becomes too strong, which may deteriorate the texture. On the other hand, in order to exert the effect of the yield agent, it is preferable to add a yield agent of 10 p p or more. The yield agent used in the present invention may, for example, be a cationic polymer, an anionic polymer, an amphoteric polymer or a nonionic polymer. In addition, a plurality of kinds of chemicals can be used, for example, polyethylene oxide and phenol resin (sulfonated phenol formaldehyde resin, etc.), cationic polymer and cationic polymer. A yielding agent system for microparticles (anionic bentonite, colloidal cerium oxide, etc.) or organic microparticles (micropolymer formed by polymerization of acrylamide via a parental link). In addition, 'based on the purpose of improving yield' can also be used: aluminum sulfate, polyaluminium chloride, etc. -20 - 201040354 inorganic coagulant; polyamine, polyethyleneimine, thin DADMAC (dimethyldiallyl chloride An organic coagulant such as a copolymer of ammonium phosphate polymer and acrylamide. Condensation One type of pulp, sputum, medicine, etc. before mixing is added in multiple stages. The cationic polymer used as the yield agent is obtained by copolymerizing an exemplary monomer and a nonionic monomer; as 0, for example, a cationic vinyl monomer (methylammonium ethyl ester, dimethylamine) Examples of the nonionic monomer include anilide, N,N-dimethyl acrylamide, vinyl acetate, methyl acid, and (methyl). 2-hydroxyethyl acrylate, diacetone vinylpyrrolidone, N-vinylformamide, N-vinylmorphine, piperazine, etc. Among them, an amine, in addition, hydrolysis after polymerization It can also be used for the production of Q. The amphoteric polymer used as a yield agent, for example, can be obtained by copolymerizing an ethylenic monomer and a cationic monomer, and examples of the ethylenic monomer include acrylamide 2-methylpropane. Sulfonic acid, (meth)allylsulfonic acid, vinylsulfonic acid, (methacrylic acid or methylene succinic acid, etc.. As a yielding agent, an anionic polymer is used, and it is not There are no special restrictions on the type, and vinylamine, poly, poly DADMAC agents can be used. It may be added to the above, and it is also possible to carry out acrylamide such as cationic cationic monomer-based acrylic acid: (meth)propacrylonitrile, propylene acrylamide, and N-acetamide propylene oxime are preferably propylene. Polyethyleneamine or the like, anionic B is an anionic B, styrenesulfonate) acrylic acid, an ionic polymer known as a polymer-21 - 201040354 A preferred agent for use in a preferred embodiment of the present invention, straight A chain or branched polymer as its product form or dispersion type polymer. As its kind, it is preferably a cation amine (PAM) substance. In the case of an emulsion type, a cationic polypropylene amide material: a cationic cationic polypropylene amide material in a dispersed form. The yield agent used in the present invention can be selected from commercially available materials. In the case of the cationic polypropylene guanamine substance, emulsion polymerization can be carried out, and it is preferable to use the water phase type reverse phase emulsion as the specific composition, and it is not particularly limited as long as the substance contains C as a structural unit. a copolymer of a quaternary ammonium salt of an enoate and a acrylamide, and an ammonium salt obtained by copolymerization of an acrylate, and further, in the present invention, based on an improvement in yield and a point, a yield agent The molecular weight, according to the limit viscosity method, should be more than 10 million, more preferably 15 million or more, and the weight is 20 million or more. In addition, based on the idea of improving yield, the cation is good, specifically it is 〇. 5meq/g or more, better;! Excellent is 1. 5meq/g or more, preferably 2meq/g for paper, because the cation requirement of the paper material is extremely high, the better. Although the upper limit of the cationic charge density is high, it is considered to be high in the high charge density and the manufacturing cost is high, and the upper limit is 5. The 0meq/g left should be cationic, and it is preferable that the emulsion type polypropylene ruthenium is more linear, and it is more preferable to carry out the synthesis by a well-known method. The decylamine monomer unit may, for example, be C or propylene amide amine having a good texture weight average molecular weight. The average molecular weight is particularly good. The higher the charge density is, the higher the charge density is 1 m e q / g or more. In the papermaking of high newspapers, the cationic charge is not particularly limited. -22- 201040354 Furthermore, the present inventors have found that by using a low viscosity yield agent, that is, a temperature of 25 ° C. The b-type viscosity of the 3 wt% aqueous solution is 200 mPa. 8 or less, preferably 150 mPa·s or less, suppresses the generation of sediment and allows the paper product cartridge to be efficiently mixed with the paper stock. Here is the point. In the usual paper making factory, the stock solution of the yield agent is diluted to a certain concentration to be stored, and further diluted to a certain concentration when used, and the aqueous solution concentration at the time of storage is greater than 0.3% by weight. Furthermore, the smaller the particle size of the yield agent, the better the diffusibility, and it is easy to perform uniform mixing by increasing the contact chance of the drug with the paper material, and it is not easy to form a non-uniform aggregate block. Therefore, based on the viewpoint of suppressing the generation of sediment, The average particle diameter according to the photon correlation method is preferably 10,000 nm or less, more preferably 500 nm or less, and most preferably 2 Å or less. (Other liquids) In the present invention, the paper-making medicine containing the yield agent is sprayed toward the paper stock together with the other liquid mash. The other liquid to be used in the present invention is not particularly limited, and ordinary water such as industrial water, white water, clarified white water, an aqueous solution containing paper stock and a paper-making medicine taken out from the main stream, and the like can be suitably used. The liquids may be used singly or in combination of two or more. Further, the temperature of the liquids is not particularly limited and is preferably about 5 to 50. The white water of the present invention is a draining water from a papermaking section and a press part of a paper machine; the clarified white water is obtained by removing a certain amount of solid components from the water of the manufacturing process containing white water which is recovered throughout the papermaking process. of. As a means for obtaining clarified white water, generally, a disk filter, a gram -23-201040354 rovft (pressurized floating device), or the like is used, for example, in the case of using a disk filter, a pulp containing long fibers can be mixed with white water. 'The solid component is recovered and separated by a disk filter to obtain clarified white water; in the case of using Croft, the solid component of the material, fiber, etc. is formed by the bubbles generated when the air is introduced into the atmosphere after the air is introduced into the atmosphere. It is recovered and separated to obtain clarified white water. Generally, the white water concentration is 0. 2~1. About 5 wt%, the clarified white water concentration is 0. 001~0. 2% by weight or so. As described above, in the preferred aspect of the present invention, based on the viewpoint of suppressing the generation of sediment, it is preferable that the concentration of the liquid ejected from the outermost nozzle of the multi-fluid nozzle is equal to or lower than the innermost side of the multi-fluid nozzle. The concentration of the liquid ejected from the nozzle is lower than the concentration of the liquid ejected from the outermost nozzle by a certain level or more. The combination of the liquid ejected from the outermost nozzle and the liquid ejected from the innermost nozzle may, for example, be the outermost/innermost side = paper stock/clear water, paper stock/paper stock, clean water, paper stock/paper stock + white water, paper stock/clarified white water, white water/clear water, white water/clarified white water, white water/white water + clear water 'clear white water/clear water, etc.' but is not limited thereto. (Operation) In the present invention, the paper-making medicine containing the yield agent and the other liquid are ejected toward the paper stock, whereby the paper-making medicine can be quickly and uniformly mixed with respect to the paper stock. The detailed reason why the present invention can be quickly and uniformly mixed is not limited to this. However, the present invention is not limited thereto, but it can be used for papermaking by ejecting a liquid containing a plurality of papers into a paper stock. The medicine uniformly spreads the low-concentration paper which is easy to form a laminar flow in the piping, and by ejecting the liquid containing the pharmaceutical product of the -24-201040354 paper together with other liquids, the liquid flow of the energy product is instantaneously caught in the other liquid flow. By quickly mixing the present invention, the effect of the paper-making medicine on the high-efficiency paper medicine in the paper material can be fully exerted, and therefore, the liquid of the present invention is also (injected) from the viewpoint of cost reduction compared with the amount of the medicine used. To the paper material injection, not the single material confluence, but the liquid is guided by a certain pressure or more, which is higher than the internal pressure of the paper stream. More than 2bar. The adjustment of the pressure can be performed, for example, by adjusting the transport flow. The flow rate of the liquid to be ejected is determined based on papermaking or the like. In the present invention, since one or more kinds of paper-making medications are ejected toward the paper stock, at least two kinds of liquids, i.e., at least two kinds of liquids, are ejected toward the paper stream. When the above-mentioned papermaking drug is sprayed together with other liquids, one or more papermaking chemicals and other liquid paper streams may be mixed, or one or more papermaking bodies may be mixed and the two may be sprayed integrally. Paper In the present invention, the liquid containing the drug for papermaking may be plural or plural. When the multi-fluid spray is used as described later, the liquid may be three or more. For example, the liquid flow of the product is one, and the liquid composed of other liquids is used to contain the paper. Further, it is advantageous to allow the production to be suppressed by mixing according to the ground. Purely let liquid and paper flow into the paper stream. The specific pressure is used to mix the output of the pump of the liquid conductor with the size of the pipe and other liquids and other liquids. The invention "sprays one type of mixing" together with the drug and other liquid streams. Several kinds of other liquid nozzles are used to direct the liquid toward the paper, including the case where the paper flow is two -25-201040354. The concentric three-fluid nozzle is used to spray the first fluid composed of other liquids from the outermost side. The second fluid composed of the other liquid is ejected from the innermost side, and the liquid stream containing the medicine for papermaking is ejected between the first and second fluids composed of the other liquid, and by ejecting the liquid in this manner, the liquid flow can be caused to be drawn into each other. Mix quickly. In this case, it is preferable that the outermost injection pressure and the innermost injection pressure are different to rapidly mix, for example, the former is set to be higher than the internal pressure of the paper stream. 4~4. The pressure of 0b ar sets the latter to be higher than the internal pressure of the paper stream. 4~2. 4 b ar pressure. Further, it is also possible to make the injection pressure on the inner side higher than the injection pressure on the outer side. The magnitude of the pressure difference between the outer spray pressure and the inner spray pressure is not particularly limited, and is preferably 1 b ar or more to allow the fluid to rapidly mix. As described above, in the preferred aspect of the invention, it is preferable that the outermost injection pressure is higher than the internal pressure of the paper stream by more than 3 · 1 bar based on the viewpoint of suppressing the generation of sediment. The innermost jet pressure is preferably higher than the inner pressure of the paper stream. 5 b ar or more. The pressure difference between the injection pressure on the outer side and the injection pressure on the inner side is preferably as described above. 2bar~3. 5 bar, more preferably above mar, allows the fluid to mix fairly quickly. Similarly, in the case of using the above-described three-fluid nozzle, the first fluid injected from the outermost side and the second fluid injected from the innermost side can be subjected to flow rate management. For example, it is preferable to set the outer first fluid to 44 6 L/sec, more preferably 6 to 1 2 L/sec. Corresponding to this, it is advisable to set the innermost second fluid to each one. 5~3. OL / sec, more preferably 1. 0~2. 0 L/sec. In this case, the difference between the flow rate of the outermost fluid and the flow rate of the innermost fluid is not particularly limited 'by combining the flow rate of the flow and the pressure of the aforementioned pressure difference -26-201040354, the liquid can be efficiently performed mixing. Further, in the present invention, the liquid containing the drug for papermaking may be two or more. For example, a liquid containing a yield agent and a liquid containing a gum can be used, so that two or more kinds of paper-making drugs can be mixed into the paper at one time. In the material. For example, in the case where the liquid containing the yield agent is one, the liquid containing the sizing agent is one, and the other liquids such as white water are two, a total of four liquid flows are used, in which case, for example, a four-fluid nozzle is used. A jet of another liquid such as two white waters is provided inside and outside, and a jet of the yield agent and a jet of the sizing agent are introduced therebetween. Further, in the present invention, as described above, a plurality of liquids containing a paper-making medicine may be used, and a plurality of paper-making medicines may be mixed in the paper stock, but a plurality of paper-making medicines are contained in one liquid and the liquid is directed toward the paper. Material injection is also possible. For example, a yielding agent and a sizing agent may be mixed in one liquid and then sprayed together with other liquids into the stock. Further, in the case of the liquid containing the pharmaceutical product for papermaking of the present invention, in addition to the liquid Q containing a certain proportion of the paper-making medicine, the liquid containing the entire paper-making medicine is not only an aqueous solution of the water-soluble medicine but also a dispersion of the medicine. A liquid, etc., can also use a part of the paper stock taken out from the manufacturing process. In the present invention, the paper-making medicine containing the yield agent is sprayed toward the paper stock together with the other liquid, and the spray portion may be at - or more than two places. Further, in the case where a plurality of injection devices are provided in the same addition place to form one set, a separate injection device or a different injection device group may be provided at different locations. For example, when the paper stock is allowed to flow through the tubular pipe, 'If a plurality of spraying devices are provided on the pipe (the paper-making drug containing the yield agent -27-201040354 is sprayed together with the other liquid), The papermaking drug is dispersed in a plurality of 'mixing points of the paper stock' and can be mixed more efficiently. When an injection device such as a plurality of multi-fluid nozzles is provided, the conditions of the respective paper-making drugs, other fluids, pressure, flow rate, and the like may be the same or different. The multi-fluid nozzle of the present invention refers to a nozzle which can eject a plurality of fluids. The specific configuration thereof is not particularly limited. In addition, a pump can be used to inject a plurality of fluids. The pump is used to deliver liquid to a multi-fluid nozzle, which can be dedicated to multi-fluid nozzles. It can also utilize a portion of the liquid delivery means of other manufacturing processes. In the present invention, in order to suppress the generation of sediment, the surface roughness of the inner surface of the pump and the multi-fluid nozzle is preferably 4 μm or less, more preferably 2 μm or less. The surface roughness is measured in accordance with JIS Β0601, and can be carried out, for example, using Surfte St301 (manufactured by Mitutoyo Corporation). The multi-fluid nozzle ' of the present invention can mix a plurality of fluids to be sprayed into the stock material' or introduce a plurality of fluids into the stock material after being sprayed and mixed. The specific multi-fluid nozzle is not limited thereto, and a three-fluid nozzle such as TrumpJet (Wetend Technologies), a multi-fluid nozzle such as TrumpJet CHORD (Wetend Technologies), or the like can be suitably used. An example of the multi-fluid nozzle is described in Patent Document 1 (Japanese Patent Publication No. 2 007-5 〇 8129), and the like can be referred to as needed. In the injection device of the present invention, it is also possible to use a device in which the papermaking drug and other fluids are integrated into the device and then ejected, and specifically, for example, PARETO (manufactured by Nalco Co., Ltd.). •28- 201040354 3 . Papermaking step and finishing step The paper stock after mixing the paper-making medicine as described above is sent to a high-level slurry tank, and is ejected from the high-position pulping tank toward the paper-making net to perform papermaking. The present invention is applicable to various paper machines and papermaking methods. For example, a paper machine can be suitably used for papermaking using a long net paper machine, a net paper machine, a net forming machine, a Yankee paper machine, or the like, and even a texture which is easily deteriorated. The paper machine can also effectively exert the effect of the present invention. Examples of the wire mesh paper machine include a net forming machine, a top former molding machine, and the like. The papermaking speed of the present invention is not particularly limited, and is preferably high speed. That is, the shearing force of the screen becomes large at the time of high-speed papermaking, and the effect of the present invention is more easily obtained by adding a yield agent after the screen, and in addition, in the case of high-speed papermaking, the paper material in the high-level slurry tank and The combined flow of the dilution water is fierce, and even if the yield agent is added after the decorative net, the paper stock can be uniformly mixed, so that a good quality paper can be produced at a high yield. The high-speed papermaking of the present invention means that the papermaking on Q is 700 mm/min. A good effect can be obtained by applying the present invention, and the papermaking speed of the present invention is more preferably 800 m/min or more, and particularly preferably 丨〇〇〇m. More than /min, more preferably 1 200 m / min or more, and most preferably 1 500 m / min or more. Further, it is expected that the paper machine will become higher speed in the future, and as long as the effect of the present invention can be obtained, the upper limit of the papermaking speed is not limited. Further, in the present invention, various surface treatments can be applied to the paper to be produced. As the surface treatment, surface coating such as pigment coating or clear coating can be applied, and calendering treatment can also be carried out. In the present invention, in the case where a surface treatment agent is applied to the surface of the paper, for example, a surface coating device provided between the pre-dryer and the post-dryer can be utilized, for example, -29-201040354. The coating device can be generally used, for example, a paper machine for newspaper paper, and is generally a size transfer film using a film transfer type such as a gate roll size coater, and can be suitably used in the present invention. use. In the present invention, when the surface coating device is used for the application of the clear coating material, a surface coating agent such as starch, polypropylene decylamine or polyvinyl alcohol can be applied to the paper. Of course, in the present invention, such a clear coating can be applied. The type and composition of the surface coating agent for applying the clear coating material are not particularly limited, and the water-soluble polymer material for strengthening the surface strength may be used alone or in combination: coarse starch, oxidized starch, esterified starch, cationized starch, Starch of oxygen-modified starch, hydroformylated starch, hydroxyethylated starch, hydroxypropylated starch, etc.; cellulose derivative of carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, etc.; polyvinyl alcohol, A modified alcohol such as a carboxyl group-denatured polyvinyl alcohol; a styrene butadiene copolymer, a polyvinyl acetate, a vinyl chloride-vinyl acetate copolymer 'polyvinyl chloride, a polyvinylidene chloride, a polyacrylate, a polypropylene decylamine, or the like. Among them, hydroxyethylated starch or hydroxypropylated starch which is excellent in coating surface strength improvement effect is preferable. Further, in order to impart water repellency to the paper, in addition to the water-soluble polymer material, coating, styrene acrylic acid, styrene maleic acid, olefin compound, or alkyl (meth) acrylate can be used. A general surface sizing agent such as a compound, and in the case of performing neutral papermaking, it is preferred that the ionic property of the coating sizing agent is cationic. In the case where the surface treatment agent composed of the water-soluble polymer material and the surface sizing agent is applied, the mixing ratio of the water-soluble polymer material and the surface sizing agent is -30-201040354, and it is not known that it is carried out within a known range. The special water-soluble polymer substance and/or the surface sizing agent may be carried out in the periphery, and is not particularly limited. In addition, in the case of coating pigments, inorganic pigments such as metakaolin, clay, talc, dioxins, zinc sulfate, citric acid, silicate, colloidal cerium oxide, satin, etc.; organic pigments such as plastic pigments The styrene butadiene-based milk synthetic adhesive can be appropriately selected and used; the ratio of starch, cellulose derivative, etc. can be carried out within a known range, and there is no special cloth device: a coater, a bar coater, Air knife coater, curtain coater, metering rod type (rod cloth machine, gate roll coater, etc. Of course, it is also possible to use the cloth of the present invention. In the case of performing pigment coating, the inorganic substances contained in the layer of the paper are increased, In the state of the present invention, Q to 50% by weight, more preferably 20% by weight to 45% by weight. In the present invention, the calendering condition and the treatment conditions of the paper surface are not particularly limited, and may be suitably rolled. A well-known device such as a light machine or a soft roll press (soft nip roll calender) may be set in accordance with the conditions in which the devices are manufactured. (Quality) According to the manufacturing method of the present invention, it is possible to be highly qualified. In addition, The amount of cloth can be appropriately selected in the well-known specifications: bismuth, calcium sulfate, oxidized white (satin white), as an adhesive, glue, polyvinyl alcohol, etc. Other definitions of pigments and adhesives. As a coating machine , reverse roll metering ) sizing coating does not implement this pigment ash will be pigment coating sample, should be 1 〇 weight% 〇, the choice of the rolling device: metal roll structure) calender, high temperature soft target - 获得 在 在 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31 31 - - 31 - 31 31 31 31 - 5 pages) for evaluation. For example, in the case of newspaper paper, the texture index should be 1 0. 0 or less, more preferably 8 or less. In this texture index, the smaller the index, the better the texture of the paper, and the texture index difference is 0. At 5 o'clock, the difference in texture can be judged by the naked eye. DESCRIPTION OF THE INVENTION In order to explain the contents of the present invention in more detail, the contents of the present invention are described below in accordance with one aspect of the present invention. Figure 1 is a schematic view showing an aspect of the present invention. In the embodiment shown in Fig. 1, the raw material (paper stock) for papermaking is subjected to the following treatment. In other words, the pulp, the dip material, and other papermaking chemicals are combined in the first tank (1 2 ), the second tank (13), the feed tank (14), and the like to form a paper stock. The paper stock concentration of the feeding box is about 3%. Then, the stock discharged from the feed tank was mixed with the first pump (15) and the white water to dilute the stock concentration to 2% or less. The diluted paper stock was removed using a sieve (7). The paper leaving the screen is sent to the high level sizing tank (1 9 ). From the high level sizing tank, the paper is sprayed toward the paper web to form a web, and the paper is produced by drying. In the aspect shown in Fig. 1, for the paper stock after the foreign matter is removed by the screen processing, the spraying agent (18) is used to spray the yield agent and other liquids to uniformly make the yield agent in the paper stock. mixing. The aspect shown in Fig. 2 is based on the fact that the multi-fluid nozzle of the present invention sprays the yield agent together with a liquid such as a paper material which is taken out from the manufacturing process, and the yield agent is mixed in the paper stock. In the aspect shown in Fig. 2, the -32-201040354 is used as a heart-shaped one & body nozzle (TrumpJet, Wetend Technologies, etc.) to put paper and white water, or clarified white water, water, etc. to the outside. (2 1 ) and the inner price 1 (23) are ejected, and a liquid (22) containing a medicine for a papermaking agent such as a yield agent is ejected therebetween. By ejecting the liquid containing the yield agent toward the paper stock as described above, the paper-making medicine flow (22) such as the yield agent can be wound into the other liquid streams (2 1 ), ( 2 3 ), and the paper. The materials are combined so that the yield agent can be uniformly distributed throughout the stock. Q The pattern shown in Fig. 3 is to take a part of the stock from the manufacturing process and spray it together with the yield agent from the spray device to mix the yield agent in the stock. In the aspect shown in Fig. 3, after the paper material passes through the screen (3 丨) to remove the foreign matter, the ~ part of the paper material is taken out, divided into the outer flow and the inner flow, and the pump is used together with the yield agent (3 2 ) It is supplied to the spraying device (3 3 ) and is sprayed toward the paper stream. After that, the paper material and the white water are combined and sent to the high-level slurry tank (3 4 ). The paper material is sprayed from the high-level slurry tank to the papermaking web to form a paper web (web). 〇 In order to explain the present invention in more detail. The following examples are shown for the content 'but the following examples are not intended to limit the scope of the invention. Unless otherwise specified, in the present specification, parts '% and ppm represent parts by weight, % by weight and ppm by weight, respectively. [Examples] 1. Evaluation test for paper production The evaluation test method of the present invention is as follows. -33- 201040354 <Measurement method of yield> For the high-level slurry tank raw material and white water falling under the papermaking net (white water under the papermaking net), the solid content concentration and the ash concentration are respectively measured. The paper yield is determined according to the following formula (1) The ash (draft) yield is determined according to the following formula (2). For the determination of ash, for the high-level slurry tank raw material and the white water under the paper-making net, the solid content is determined by ashing at 525 °C to determine the weight. [Formula I] Paper yield = l〇〇x ( AB ) /A (1) A: Solid content concentration of raw material in high-level slurry tank (g/1) B: Solid content concentration of white water under papermaking net (g/1) [Equation 2] Ash yield = 100x (CD) / C ( 2 C: Ash concentration of raw material in high-level slurry tank (g/1) D: Ash concentration of white water under paper-making net (g/1) <Measurement method of texture> The texture index was measured by FMT-MIII (light transmission light fluctuation method) manufactured by Nomura Corporation. The aperture (sensitivity) of the CCD camera used is 12 ° <Measurement method of paper etc.> Basis weight: According to JIS P 8124: 1998 (ISO 536: 1995) Ash: According to JIS P 8251: 2003. -34- 201040354 Carbonic acid consumption content: According to JIS P 825 1 and JIS P 82 52, the ash content at 525 °C and 900C is calculated, and the carbonic acid and amount are calculated according to the following formula (3) [Formula 3] Calcium carbonate (%) = ( EF ) xG/H ( 3 ) E : ash at combustion at 5 2 5 °C (%) F : ash at combustion at 900 °C (%) 0 G : 100 = molecular weight of calcium carbonate Η : 44 = molecular weight of carbon dioxide <Evaluation of paper surface defects> Among the defects generated in the papermaking process, the defects detected by the defect detector installed in the paper machine (the size is 4 mm in length and 4 mm in width) are generated from the unit time. The number of paper defects per day is calculated by the following formula (4). 〇[Formula 4] Number of defects per day (number/day) = I/JxK (4) I : Number of defects detected by the defect detector (s) J: Unit time (hours) K : 24 (converted into days) <Evaluation of paper break> The number of paper breaks per day (24 hours of operation) during paper machine operation was calculated. -35- 201040354 <Fiber distribution> The fiber distribution was measured by a fiber analyzer (a fiber tester manufactured by Lorentzen & Wettre) to determine the ratio of fibers to paper fibers. 2. Evaluation test of papermaking drugs <Use of Drugs> This embodiment uses the following drugs. • Drug 1 : Emulsion-based polypropylene amide-based SOMAR company) • Drug 2: Emulsion-based polyacrylamide-based SOMAR company.) Drug 3: Emulsion-based polypropylene amide-based SOMAR company Rate agent (R-3 00, rate agent (R-22 0, rate agent (R -1 0 1, . drug 4: dispersible polyacrylic acid amine good) drug 5: dispersed polypropylene amide HYMO company) • Drug 6: Dispersed polyacrylic acid amine system made by HYMO Co., Ltd.) HYMO company) ND3 00 rate Qi! 1 (DR5 700 rate agent (SC924, <Measurement method> • Molecular star. Ray according to the ultimate viscosity method & • 36 - 201040354 • Cationic charge density: Take 〇_lg/L of aqueous sample solution using 1/1 000 equivalent of polyethyl sulphate potassium hydroxide (PVSK) by automatic titrator (BTG system 'MUTEK PCD-04) The anion required amount was measured, and the cationic charge density was calculated according to the following formula (5). [Equation 5] Cationic charge density (meq/g) = L/MxN (5) 0 L: Anion requirement (peq/L) Μ · Sample solution concentration (g/L) N : 1000 ' • Viscosity · · For The 〇3 wt% aqueous solution of the sample was measured at 25 ° C and 6 rpm using a B-type viscometer (BL type viscometer manufactured by Tokyo Keiki Co., Ltd.). • Particle size • The sample was diluted to 250 mg/L by using water adjusted to a conductivity of 1 〇〇 mS/m via sodium chloride. The measurement was carried out using a particle size Zeta potential measuring device G (ZETASIZER 3000HSA manufactured by Malvern). • Maximum agglutination 値: The maximum agglutination enthalpy of each drug was evaluated using the test sample described below, where the maximum agglutination enthalpy of the drug 1 was set to 100 Å. The larger the number, the higher the agglutination power of the drug. (Test sample) 10 parts of DIP, τ Μ P 1 5 parts, and 5 parts of conifer bleached kraft paper (ΝΒΚΡ) were mixed and dissociated to prepare a paper pulp paste, which was added to the solid content of the pulp. 40% of light carbonic acid was used as a dip material. - 37-201040354 After diluting the paper stock concentration to 0.5% by weight with tap water, sodium chloride was added to make the conductivity become l〇〇mS/m, which was prepared. A paper net of 200 mesh was installed in a dynamic water filter tank (DDJ: Dynamic D rainage Jar), and the test sample prepared according to the above method was stirred at 700 rpm and the filtrate was circulated to obtain a sample having a concentration of 0.03 wt% aqueous solution. The paper was fed in such a manner that the addition rate was 〇 重量 3% by weight, and immediately after the sample was added, the transmitted light intensity (indicated degree of aggregation) of the liquid was measured by a light dispersion analyzer (PDA2000 manufactured by RANK BROTHERS). The degree of agglutination at the time of maximum aggregation was evaluated by the change in light intensity. [Table 1] Table 1 Drug Morphology Structure Molecular Weight g/mol Cationic Charge Density meq/g Viscosity mPa · S Particle Size nm Maximum Aggregation 値 品品 1 Emulsifier Linear 20 Million 1.7 600 1000 300 Music 2 Emulsifier Linear 2000 More than 10,000 2.3 750 800 105 Pharmaceuticals 3 Emulsifier branches more than 20 million 2.1 800 750 125 Drugs 4 Dispersed linear 15 million 2.1 120 120 115 Music 5 Dispersed linear 7 million 2.2 100 100 50 Drugs 6 Dispersed branches 500,000 9.8 40 80 55 Table 1 shows the results of the evaluation test of the drug, and based on this result, the following things were known. From the comparison of the drugs 1 to 4 and the drugs 5 and 6, it is found that if the molecular weight is 10,000,000 or less, the cohesive force is weak, that is, the yield effect is low. From the comparison of the drug 4 and the drug 5, even in the same form and structure, the higher the molecular weight, the stronger the cohesive force. From the comparison of the drugs 1 to 5 and the drug 6, it is known that -38 to 201040354 has a high charge density, and if the molecular weight is low, the cohesive force is small. From the comparison of the drugs 1 to 3 and the drug 4, it was found that in the case of the dispersion type, even if the molecular weight is slightly lower, the cohesive force of the same level as the emulsion type is obtained. 3. Production of newspaper paper for lithographic printing [Example 1] Dissolve 80 parts of DIP (freeness 200 ml), 15 parts of TMP (freeness 100 ml 〇), and 5 parts of conifer bleached kraft pulp (NBKP, freeness 600 ml). The pulp paste is prepared, and a light calcium carbonate of 20% relative to the solid content of the pulp is added as a dip in the pulp paste, and a cationic modified starch is added as an internal paper reinforcing force with respect to the solid content of the pulp. The agent was added to a paper stock by adding aluminum sulfate of 2% based on the solid content of the pulp. Freeness is the Canadian Standard Freeness (CSF), and the proportion of fibers above 1 mm in the stock is weighted by about 33%. Next, after the paper stock passes through the screen to remove foreign matter, the yield agent is sprayed toward the paper stock in a place where the high-level slurry tank can be reached within 5 seconds (Fig. 1). The injection of the yield agent was carried out using an injection device (TrumpJet, manufactured by Wetend Technologies, Inc.) having the three-fluid nozzle shown in Fig. 2, and the paper material taken out from the paper stream was ejected from the outside and the inside of the three-fluid nozzle. The liquid containing the drug 1 (REALIZER R-300, manufactured by SOMAR) was sprayed between the jets of the stock (Fig. 3). The amount of the yield agent added was 0.020% by weight based on the paper stock. The pressure of the fluid (jet stream) ejected from the outside of the three-fluid nozzle is higher than the internal pressure of the stock material. Ob ar, the fluid (mixed stream) pressure ejected from the inside of the three-fluid nozzle is -39- than the stock 201040354 Internal pressure is 1 _ 0 b ar. The concentration of the paper stock when the yield agent is added is 1. 丨% by weight. The paper material is sent to the high-level slurry tank of the module spray type, and the paper material is sprayed from the high-position pulping tank toward the net-type papermaking net at a papermaking speed of 1 2 5 Om/min and a basis weight of 43 g/m2. The condition is to produce newspaper paper base paper by neutral papermaking. On the base paper, a surface coating agent composed of hydroxyethylated starch and a cationic surface sizing agent (styrene/acrylate copolymer) using a gate roll coater (the solid concentration of the hydroxyethylated starch is 6 · 0 %, the solid content concentration of the surface sizing agent is 〇·3〇%) is uniformly applied to both the top surface of the edging surface and the surface of the papermaking sheet, thereby obtaining newspaper paper for lithographic printing. The coating amounts of the hydroxyethylated starch and the cationic surface sizing agent were respectively 〇7 g/m 2 (total of both sides) and 0.04 g/m 2 (total of both sides). [Example 2] A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that the rate of addition of the yield agent of Example 1 was changed to 0. 〇 18% by weight. The proportion of the fibers having a diameter of 1 mm or more in the paper stock and the concentration of the paper stock at the time of the addition of the yield agent are shown in Table 2 (the same applies to the following examples and comparative examples). [Example 3] The rate of addition of the yield agent of Example 1 was changed to 0.015 by weight. /. In the same manner as in Example 1, a newspaper paper for lithographic printing was obtained. [Example 4] -40 * 201040354 Except that the yield agent of Example 1 was changed to the drug 2 (R-22〇, manufactured by S OMAR), and the yield of the yield agent was changed to 0.018% by weight, and Example 1 Paper for lithographic printing is obtained in the same manner. [Example 5] Except that the yield agent of Example 1 was changed to the drug 3 (R-1 01, manufactured by S Ο MAR Co., Ltd.), and the rate of addition of the yield agent was changed to 〇·〇 18% by weight, 0 and implementation In the same manner as in Example 1, a newspaper paper for lithography was obtained. [Example 6] A lithographic newspaper was obtained in the same manner as in Example 1 except that the yield agent of Example 1 was changed to the drug 4 (ND3 00, manufactured by HYMO Co., Ltd.) and the yield of the yield agent was changed to 0.018% by weight. Use paper. [Example 7] Q In addition to changing the yield agent of Example 1 to drug 5 (DR5 700 'Η Υ Μ Ο )), the rate of addition of the yield agent was changed to 0 · 〇18% by weight' and examples 1 A newspaper paper for lithography is obtained in the same manner. [Example 8] A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that a paper paste prepared by using DIΡ (freeness 2 0 0 m 1 ) was used. The fiber of 1 m m or more accounts for about 25 % of the paper stock. 201040354 [Example 9] A pulp paste prepared by using 45 parts of DIP (freeness 200 ml), 35 parts of TMP (100 ml of swimming), and 20 parts of conifer bleached kraft pulp (NBKp, swimming 6 0 m 1 ) were mixed and dissociated. In the same manner as in the case of the real one, the newspaper paper for lithography was obtained. The ratio of the fiber material of 1 mm or more is about 50% by weight. [Comparative Example 1] The paper stock prepared in the same manner as in Example 1 was not sprayed, and the outlet side of the second fan was shown before the paper stock was processed by the screen. The lithographic newspaper paper was obtained in the same manner as in the examples except that the drug 1 (manufactured by REALIZER I 'SOMAR Co., Ltd.) was added in an amount of 0.030% by weight. [Comparative Example 2] A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that the rate of addition of the yield agent was changed to 0.035% by weight or more. [Comparative Example 3] For the paper stock prepared in the same manner as in Example 1, the non-spraying device 'added medicine 1 to the paper material processed after the screen (the rear shown in Fig. 1) (REALIZER R-3) 00, SOMAR company 〇 3 3 3 3 3 3 3 3 3 获得 获得 平 平 平 平 平 平 平 平 平 平 平 平 平 平 平 平 平 平 平 平 平 。 。 。 。 。 。 。 。 。 。 。 。 。 离 离 离 离 离 离 离42- 201040354 [Table 2-1] Table 2 Yield agent yielding place Add-on site Spraying device Yield of paper stock (%) Ratio of fiber of lmm or more to paper stock (%) Morphological structure molecular weight Example 1 Drug 1 emulsion linear 20 million high-position slurry tank front three-fluid nozzle 1.1 33 Example 2 Drug 1 emulsion linear 20 million high-position paddle front three-fluid nozzle 1.3 33 Example 3 Drug 1 emulsion straight chain 2000 Million high-position slurry tank front three-fluid nozzle 1.4 33 Example 4 Drug 2 emulsion straight chain 20 million or more high-position slurry tank front three-fluid nozzle 1.3 35 Example 5 Drug 3 emulsion branch before 20 million high-position slurry tank Three fluid Mouth 1.2 33 Example 6 Drug 4 Disperse linear 15 million high-position slurry tank front three-fluid nozzle 1.2 32 Example 7 Drug 5 Disperse linear 7 million high-position slurry tank front three-fluid nozzle 1.5 34 Example 8 Drug 1 Emulsion Straight chain 20 million high-position slurry tank front three-fluid nozzle 1.1 26 Example 9 Drug 1 emulsion linear 20 million high-position slurry tank front three-fluid nozzle 1.1 48 Comparative example 1 Pharmaceutical 1 emulsion linear 20 million second pump Export ml·>>,, 1.5 33 Comparative Example 2 Drug 1 Emulsifier Straight Chain 20 Million 2nd Pump Outlet No 1.1 33 Comparative Example 3 Drug 1 Emulsion Straight Chain 20 Million Screen - ήγρ 1.2 34
〔表 2-2〕 良率劑 添加率 (%) 紙料 良率 (%) 灰分 良率 (%) 質地 紙面缺陷 個沃 基重 (g/ra2) 灰分 (%) 碳酸鈣 含量 (%) 實施例1 0.020% 63.2 29.7 5.3 63 43.2 12,1 7.5 實施例2 0.018% 50.1 18.2 5.1 65 43.0 12.0 7.2 實施例3 0.015% 47.8 15.5 4.8 58 43.2 12.0 7.4 實施例4 0.018¾ 50.9 20.4 5.1 75 43.0 12.0 7.4 實施例5 0.018% 51.8 22.6 5.2 69 43.0 12.0 7.4 實施例6 0.018% 52.2 22.7 4.9 31 43.0 12.2 7.5 實施例7 0.018% 44.4 12.5 4.6 34 43.0 11.5 7.1 實施例8 0.020% 62.5 28.2 5.4 77 43.1 12.1 7.6 實施例9 0.020% 63.5 29.5 5.3 91 43.0 12.0 7.4 比較例1 0.030% 48.0 15.2 4.7 72 43.0. 11.9 7.7 比較例2 0.035% 61.7 24.8 5,7 108 43.3 12.3 7.4 比較例3 0.023% 51.8 20.0 5.4 137 43.2 12.1 7.2 表2顯示上述實施例及比較例的結果。 實施例1、2和比較例1的結果顯示，若根據本發明 -43- 201040354 使用噴射裝置而在高位調漿槽之前添加良率劑’即使添加 量比在篩網前添加良率劑的情況更少’仍能提高紙料及灰 分的良率。再者，從實施例3和比較例1的結果得知，藉 由使用噴射裝置將良率劑和其他液體一起朝紙料噴射，即 使將良率劑的添加率減少5成左右’仍能以同等級的紙料 及灰分的良率製造出同等級質地的紙。 此外，從實施例1和比較例2的結果得知’在篩網前 添加多量良率劑的情況可獲得高良率’其紙料良率與使用 噴射裝置進行噴射的情況同等級，但質地變差。 此外，從實施例2和比較例3的結果得知，雖然紙料 及灰分的良率爲同等級，但相較於在筛網後添加良率劑的 情況，使用噴射裝置進行噴射的情況質地良好，且在更少 的良率劑添加量下可獲得同程度的良率，又紙面缺陷少。 從實施例1 ~6及8 ' 9和實施例7的比較得知，若良 率劑分子量爲1〇〇〇萬以上’使用多流體噴嘴時的良率效 果顯著提昇。此外’從實施例6及7得知，若使用多流體 噴嘴來將分散型的良率劑導入紙料’可有效減少紙面缺陷 〇 從實施例1、8和實施例9的比較得知，若1 m m以上 的纖維占紙料的比例變多’紙面缺陷有增加的傾向，藉由 使其比例在長度加權50%以下’有助於更加減少缺陷。 4 ·平版印刷用報紙用紙的製造（液體濃度的影響） 〔實施例1〕 -44- 201040354 將DIP (游離度200ml ) 80份、TMP (游離度1 00ml )1 5份、針葉樹漂白牛皮紙漿（NBKP，游離度600ml ) 5 份混合解離而調製成紙漿糊，在該紙漿糊中，添加相對於 紙漿固體成分爲20%之輕質碳酸鈣作爲塡料，添加相對於 紙漿固體成分爲0.5%之陽離子變性澱粉作爲內添紙力增 強劑，添加相對於紙漿固體成分爲2 %的硫酸鋁而調製出 紙料。游離度是表示加拿大標準游離度（C S F )，紙料中 Q 1 mm以上纖維所占比例爲長度加權約3 3 %。 接著，將該紙料通過篩網而除去異物後，在5秒內可 到達高位調漿槽的場所將良率劑朝紙料噴射（第1圖）。 良率劑的噴射，是使用具有第2圖所示的三流體噴嘴之噴 射裝置（TrumpJet，Wetend Technologies 公司製）來進行 ，由紙料流取出的紙料（固體成分濃度2.0 % )是從三流 體噴嘴之最外側供應並噴射，最內側是供應並噴射白水（ 固體成分濃度1.2%)，包含分散型直鏈狀的陽離子性聚 〇 丙烯醯胺系良率劑（ND300，重量平均分子量約1 5 00萬 ，陽離子電荷密度2.1meq/g，黏度120mPa. s，平均粒徑 120nm，HYMO公司製）的液體是從紙料和白水的噴射流 之間噴射（第3圖）。良率劑的添加量，相對於紙料爲 0·0 1 5重量％。從三流體噴嘴的外側噴射的流體（噴射流 )的壓力是比紙料的內壓高3 .Obar，從三流體噴嘴的內側 噴射的流體（混合流）壓力是比紙料的內壓高1 .Obar。良 率劑添加時的紙料流之紙料濃度爲1 · 1重量％。 將該紙料送往模組噴射型的高位調漿槽，從高位調漿 -45- 201040354 槽朝夾網型的抄紙網上噴射紙料’以抄紙速度1 250m/分 鐘、基重43 g/m2的條件藉由中性抄紙製造出報紙用紙原 紙。 在該原紙上，使用閘輥塗布機，將羥乙基化澱粉及陽 離子性表面上膠劑（苯乙烯/丙烯酸酯共聚物）所構成的 表面塗布劑（羥乙基化澱粉的固體成分濃度爲6.0 %，表 面上膠劑的固體成分濃度爲0.30% )均等地塗布於毛氈面 、抄紙網面這兩面，藉此獲得平版印刷用報紙用紙。羥乙 基化澱粉及陽離子性表面上膠劑的塗布量分別爲〇.7g/m2 (兩面合計）及〇.〇4g/m2 (雨面合計）。 〔實施例2〕 在實施例1中，除了從三流體噴嘴之最內側噴射的液 體是使用澄清白水（固體成分濃度〇· 1 % )以外，與實施 例1同樣地獲得平版印刷用報紙用紙。 〔實施例3〕 在實施例1中，除了從三流體噴嘴之最內側噴射的液 體是使用清水（固體成分濃度〇% )以外，與實施例1同 樣地獲得平版印刷用報紙用紙。 〔實施例4〕 在實施例1中，除了從三流體噴嘴之最外側噴射的液 體是使用澄清白水（固體成分濃度0.1 % )、從三流體噴 -46- 201040354 嘴之最內側噴射的液體是使用清水（固體成分濃度0% ) 以外’與實施例1同樣地獲得平版印刷用報紙用紙。 〔實施例5〕 在實施例1中’除了從三流體噴嘴之最外側噴射的液 體是使用從紙料流取出的紙料（固體成分濃度1.2%)、 從三流體噴嘴之最內側噴射的液體是使用清水（固體成分 0 濃度0% )以外，與實施例1同樣地獲得平版印刷用報紙 用紙。 〔實施例6〕 在實施例5中，作爲良率劑是使用液化液型直鏈狀的 陽離子性聚丙烯醯胺系良率劑（REALIZER R-300 ’重量 平均分子量約2000萬，陽離子電荷密度l.7meq/g’黏度 600mPa. s，平均粒徑lOOOnm，SORMA公司製），除此 Q 外是實施例1同樣地獲得平版印刷用報紙用紙。 〔實施例7〕 在實施例1中，除了從三流體噴嘴之最外側噴射的液 體是使用澄清白水（固體成分濃度0.3 %)、從三流體噴 嘴之最內側噴射的液體是使用清水（固體成分濃度0%) 以外，與實施例1同樣地獲得平版印刷用報紙用紙。 〔實施例8〕 -47- 201040354 在實施例1中，除了從三流體噴嘴之最外側噴射的液 體是使用從紙料流取出的紙料（固體成分濃度2.0% )、 從三流體噴嘴之最內側噴射的液體是使用從紙料流取出的 紙料（固體成分濃度2 ·0%)以外，與實施例1同樣地獲 得平版印刷用報紙用紙。 〔實施例9〕 在實施例1中’除了從三流體噴嘴之最外側噴射的液 體是使用從紙料流取出的紙料（固體成分濃度1.2%)、 從三流體噴嘴之最內側噴射的液體是使用從紙料流取出的 紙料（固體成分濃度1 · 2 % )以外，與實施例1同樣地獲 得平版印刷用報紙用紙。 〔實施例1 〇〕 在實施例1中’除了從三流體噴嘴之最外側噴射的液 體是使用從紙料流取出的紙料（固體成分濃度2 · 2 % )、 從三流體噴嘴之最內側噴射的液體是使用將從紙料流取出 的紙料經由清水（固體成分濃度〇 % )稀釋的紙料（固體 成分濃度2.0% )以外’與實施例1同樣地獲得平版印刷 用報紙用紙。 〔實施例1 1〕 在實施例1中，除了從三流體噴嘴之最外側噴射的液 體是使用從紙料流取出的紙料（固體成分濃度2 2%)、 -48- 201040354 從三流體噴嘴之最內側噴射的液體是使用清水（固體成分 濃度〇%)以外，與實施例1同樣地獲得平版印刷用報紙 用紙。 〔表3〕 表3 流镫① 流體③ 濃度差 ①-③ 良率劑 紙料良率 % 灰分良率 % 質地 紙面缺陷 個 斷紙 次厌 基重 £/m3 灰分 % 碳酸鈣 含量 % 實施例1 紙料 2.05ί 白水 1.2* 0.8% ND300 48.5 19.7 5.4 90 0.8 43.4 7.3 實施例2 紙料 2.0% 澄清白水 ο.】χ 1.9% ND300 46.7 192 5.3 68 0.6 43.2 122 12 實施例3 紙料 2.0% 清水 ΟΧ 2.0% NO 300 433 185 4S 48 05 433 12.1 12 實施例4 澄清白水 0.1% 清水 ΟΧ 0.1Χ ND300 53.β 2CU 52 25 0.4 43.2 12,3 7_5 實施例5 紙料 1.2S 清水 ΟΧ 1.2% ND300 50.6 18·θ 4.9 36 0.4 43.2 12.2 7.4 實施例6 紙料 1.2% 清水 οχ R300 48.5 16<8 5.1 55 0.6 43.1 12.0 7.3 實施例7 澄清白水 0,3% 清水 0% 0.3% ND300 54.3 21.0 5.1 22 0.4 43.2 12.3 7.6 實施例8 紙料 2.0% 紙料 2.0% οχ ND300 45.3 20.3 5.9 161 1.9 43.7 11.9 Ί2 實施例9 紙料 1.2% 紙料 1_2Χ 0% ND300 53.6 \9£ 4.9 120 1.3 43.2 12.2 7.5 實施例10 紙料 2.2% 紙料 2.0% 0.2% ND300 43.1 19.2 6.2 173 1.S 44.2 Π.8 7.1 實施例11 紙料 22% 清水 0% 22% ND300 45.4 20.3 5.7 138 12 44.0 Π.9 7.2[Table 2-2] Yield rate of yield agent (%) Paper yield (%) Ash yield (%) Texture of paper surface defect weight (g/ra2) Ash (%) Calcium carbonate content (%) Implementation Example 1 0.020% 63.2 29.7 5.3 63 43.2 12,1 7.5 Example 2 0.018% 50.1 18.2 5.1 65 43.0 12.0 7.2 Example 3 0.015% 47.8 15.5 4.8 58 43.2 12.0 7.4 Example 4 0.0183⁄4 50.9 20.4 5.1 75 43.0 12.0 7.4 Implementation Example 5 0.018% 51.8 22.6 5.2 69 43.0 12.0 7.4 Example 6 0.018% 52.2 22.7 4.9 31 43.0 12.2 7.5 Example 7 0.018% 44.4 12.5 4.6 34 43.0 11.5 7.1 Example 8 0.020% 62.5 28.2 5.4 77 43.1 12.1 7.6 Example 9 0.020% 63.5 29.5 5.3 91 43.0 12.0 7.4 Comparative Example 1 0.030% 48.0 15.2 4.7 72 43.0. 11.9 7.7 Comparative Example 2 0.035% 61.7 24.8 5,7 108 43.3 12.3 7.4 Comparative Example 3 0.023% 51.8 20.0 5.4 137 43.2 12.1 7.2 Table 2 The results of the above examples and comparative examples are shown. The results of Examples 1, 2 and Comparative Example 1 show that if the injection device is used according to the invention -43-201040354, the yield agent is added before the high-position slurry tank' even if the addition amount is higher than the addition of the yield agent in front of the sieve. Less' still improves the yield of paper and ash. Further, from the results of Example 3 and Comparative Example 1, it is known that by using the ejection device to eject the yield agent together with other liquids toward the paper stock, even if the addition rate of the yield agent is reduced by about 50%, The same grade of paper and ash yields produce paper of the same grade texture. Further, from the results of Example 1 and Comparative Example 2, it was found that 'the high yield can be obtained by adding a large amount of the yield agent before the screen', and the paper yield is the same as that of the injection device, but the texture is changed. difference. Further, from the results of Example 2 and Comparative Example 3, although the yields of the paper stock and the ash were the same, the quality of the injection using the injection device was good compared to the case where the yield agent was added after the screen. And the same degree of yield can be obtained with less yield agent addition, and paper defects are less. From the comparison of Examples 1 to 6 and 8' 9 and Example 7, it is found that if the yield of the yield agent is 100,000 or more, the yield effect when the multi-fluid nozzle is used is remarkably improved. Further, from the examples 6 and 7, it is known that the use of a multi-fluid nozzle to introduce a dispersion-type yield agent into the paper stock can effectively reduce paper defects, and it is known from the comparison of Examples 1, 8 and 9. The ratio of fibers of 1 mm or more to paper stock increases, and the tendency of paper defects increases, and the ratio is weighted by 50% or less in length, which contributes to further reduction of defects. 4) Manufacture of newspaper paper for lithography (effect of liquid concentration) [Example 1] -44- 201040354 80 parts of DIP (freeness 200 ml), 15 parts of TMP (freeness 100 ml), conifer bleached kraft pulp ( NBKP, freeness 600ml) 5 parts were mixed and dissociated to prepare a pulp paste, and 20% of the light calcium carbonate relative to the solid content of the pulp was added as a dip in the pulp paste, and 0.5% of the solid content of the pulp was added. The cationic modified starch was used as an internal paper strength enhancer, and a paper stock was prepared by adding aluminum sulfate of 2% with respect to the solid content of the pulp. Freeness is the Canadian standard freeness (C S F ), and the proportion of fibers above Q 1 mm in the stock is weighted by about 33%. Next, after the paper stock was passed through a screen to remove foreign matter, the yield agent was sprayed toward the paper stock in a place where the high-level slurry tank was reached within 5 seconds (Fig. 1). The injection of the yield agent was carried out using an injection device (TrumpJet, manufactured by Wetend Technologies, Inc.) having the three-fluid nozzle shown in Fig. 2, and the paper stock (solid content concentration: 2.0%) taken out from the paper stream was from three. The outermost side of the fluid nozzle is supplied and sprayed, and the innermost side is supplied and sprayed with white water (solid content concentration: 1.2%), and contains a dispersed linear cationic polyacrylamide amide amine yielding agent (ND300, weight average molecular weight of about 1). The liquid of 50 million, a cationic charge density of 2.1 meq/g, a viscosity of 120 mPa·s, an average particle diameter of 120 nm, manufactured by HYMO Co., Ltd. was ejected from a jet of paper stock and white water (Fig. 3). The amount of the yield agent added was 0.15% by weight based on the paper stock. The pressure of the fluid (jet stream) ejected from the outside of the three-fluid nozzle is 3. Obar higher than the internal pressure of the stock, and the pressure of the fluid (mixed stream) ejected from the inside of the three-fluid nozzle is higher than the internal pressure of the stock 1 .Obar. The paper stock concentration of the paper stream when the yield agent was added was 1:1% by weight. The paper material is sent to the high-level slurry tank of the module spray type, and the paper material is sprayed from the high-grade pulp-45-201040354 groove toward the net type paper-making paper at a papermaking speed of 1 250 m/min and a basis weight of 43 g/ The condition of m2 is to produce newspaper paper base paper by neutral papermaking. On the base paper, a surface coating agent composed of hydroxyethylated starch and a cationic surface sizing agent (styrene/acrylate copolymer) using a gate roll coater (the solid concentration of the hydroxyethylated starch is 6.0%, the solid content concentration of the surface sizing agent was 0.30%) was uniformly applied to both the felt surface and the paper surface, thereby obtaining newspaper paper for lithographic printing. The coating amounts of the hydroxyethylated starch and the cationic surface sizing agent were respectively 〇7 g/m2 (total of both sides) and 〇.〇4 g/m2 (total of rain). [Example 2] A lithographic newspaper paper was obtained in the same manner as in Example 1 except that clarified white water (solid content concentration 〇·1 %) was used for the liquid ejected from the innermost side of the three-fluid nozzle. [Example 3] In the first embodiment, a newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that the liquid ejected from the innermost side of the three-fluid nozzle was made of clean water (solid content concentration 〇%). [Embodiment 4] In the embodiment 1, except that the liquid ejected from the outermost side of the three-fluid nozzle is a liquid which is ejected from the innermost side of the mouth of the three-fluid spray-46-201040354 using clarified white water (solid content concentration: 0.1%) A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that fresh water (solid content concentration: 0%) was used. [Embodiment 5] In Embodiment 1, 'the liquid ejected from the outermost side of the three-fluid nozzle is a liquid which is ejected from the innermost side of the three-fluid nozzle using the paper stock (solid content concentration: 1.2%) taken out from the paper stream. A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that fresh water (solid content 0 concentration: 0%) was used. [Example 6] In Example 5, a liquefied liquid type linear cationic guanamine-based yielding agent (REALIZER R-300' weight average molecular weight of about 20 million, cationic charge density was used as a yielding agent. In the same manner as in Example 1, a paper for lithographic printing paper was obtained in the same manner as in Example Q except that the viscosity was 600 mPa·s, the average particle diameter was 100 nm, and it was produced by SORMA. [Example 7] In Example 1, except that the liquid ejected from the outermost side of the three-fluid nozzle was clarified white water (solid content concentration: 0.3%), the liquid ejected from the innermost side of the three-fluid nozzle was made of clean water (solid content). A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that the concentration was 0%. [Embodiment 8] -47- 201040354 In Example 1, except that the liquid ejected from the outermost side of the three-fluid nozzle was a paper material (solid content concentration: 2.0%) taken out from the paper stream, and the most from the three-fluid nozzle The paper for lithographic printing was obtained in the same manner as in Example 1 except that the paper was taken out from the paper stream (solid content concentration: 2.0%). [Embodiment 9] In Example 1, 'the liquid ejected from the outermost side of the three-fluid nozzle was a liquid which was ejected from the innermost side of the three-fluid nozzle using the paper stock (solid content concentration: 1.2%) taken out from the paper stream. A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that the paper stock (solid content concentration: 1.2%) taken out from the paper stream was used. [Example 1 〇] In Example 1, 'except for the liquid ejected from the outermost side of the three-fluid nozzle, the paper stock taken out from the paper stream (solid content concentration 2 · 2 %), from the innermost side of the three-fluid nozzle In the same manner as in Example 1, except that the paper material (the solid content concentration: 2.0%) diluted with the water (solid content concentration 〇%) of the paper material taken out from the paper stream was used, the paper for lithographic printing was obtained. [Embodiment 1 1] In Example 1, except that the liquid ejected from the outermost side of the three-fluid nozzle was a paper material (solid content concentration 2 2%) taken from the paper stream, -48-201040354 from the three-fluid nozzle A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that the liquid sprayed on the innermost side was water (solid content concentration 〇%). [Table 3] Table 3 Flow 1 Fluid 3 Concentration difference 1-3 Yield rate paper yield % ash yield % texture paper defect paper break anaphysical basis weight / m3 ash % calcium carbonate content % Example 1 Paper stock 2.05 ί White water 1.2* 0.8% ND300 48.5 19.7 5.4 90 0.8 43.4 7.3 Example 2 Paper stock 2.0% clarified white water ο.] χ 1.9% ND300 46.7 192 5.3 68 0.6 43.2 122 12 Example 3 Paper stock 2.0% Clear water ΟΧ 2.0% NO 300 433 185 4S 48 05 433 12.1 12 Example 4 Clarified white water 0.1% clear water ΟΧ 0.1Χ ND300 53.β 2CU 52 25 0.4 43.2 12,3 7_5 Example 5 Paper stock 1.2S Clear water ΟΧ 1.2% ND300 50.6 18 · θ 4.9 36 0.4 43.2 12.2 7.4 Example 6 Paper stock 1.2% Clear water οχ R300 48.5 16<8 5.1 55 0.6 43.1 12.0 7.3 Example 7 Clear white water 0,3% Clear water 0% 0.3% ND300 54.3 21.0 5.1 22 0.4 43.2 12.3 7.6 Example 8 Paper stock 2.0% Paper stock 2.0% οχ ND300 45.3 20.3 5.9 161 1.9 43.7 11.9 Ί2 Example 9 Paper stock 1.2% Paper stock 1_2 Χ 0% ND300 53.6 \9£ 4.9 120 1.3 43.2 12.2 7.5 Example 10 Paper stock 2.2% paper stock 2.0% 0.2% ND300 43.1 19.2 6.2 173 1.S 44.2 Π. 8 7.1 Example 11 Paper stock 22% clean water 0% 22% ND300 45.4 20.3 5.7 138 12 44.0 Π.9 7.2
表3顯示上述實施例的結果。 從實施例1〜7和實施例8〜1 1的結果得知，依據本發 Q 明，使從多流體噴嘴之最外側的噴嘴所噴射之液體濃度爲 2 · 0重量％以下，從三流體噴嘴之最內側的噴嘴所噴射之 液體濃度比從最外側的噴嘴所噴射之液體濃度低0.1重量 %以上，可獲得更良好的質地，紙料及灰分的良率提高， 且紙面缺陷及斷紙的發生減少。特別是從實施例1〜3和實 施例1 〇、1 1的比較得知，藉由使從三流體噴嘴之最外側 所噴射的液體濃度爲2.0重量％以下，可獲得良好的質地 ，且減少紙面缺陷和斷紙的發生。 此外，從實施例5和實施例6的比較得知，在使用分 散型的良率劑時，可獲得更良好的質地，紙料及灰分的良 -49 - 201040354 率提昇，且紙面缺陷和斷紙的發生減少。 5 .平版印刷用報紙用紙的製造（噴射壓的影響） 〔實施例1〕 將DIP (游離度200ml ) 80份、TMP (游離度100ml )15份、針葉樹漂白牛皮紙槳（NBKP，游離度600ml ) 5 份混合解離而調製成紙漿糊，在該紙漿糊中，添加相對於 紙漿固體成分爲2 0 %之輕質碳酸鈣作爲塡料，添加相對於 紙漿固體成分爲〇·5 %之陽離子變性澱粉作爲內添紙力增 強劑，添加相對於紙漿固體成分爲2 %的硫酸鋁而調製出 紙料。游離度是表示加拿大標準游離度（C S F )，紙料中 1 mm以上纖維所占比例爲長度加權約3 3 %。 接著，將該紙料通過篩網而除去異物後，在5秒內可 到達高位調漿槽的場所將良率劑朝紙料噴射（第1圖）。 良率劑的噴射，是使用具有第2圖所示的三流體噴嘴之噴 射裝置（TrumpJet，Wetend Technologies 公司製）來進行 ’由紙料流取出的紙料是從三流體噴嘴的內側及外側噴射 ’將包含乳化液型直鏈狀的陽離子性聚丙烯醯胺系良率劑 (REALIZER R-300’重量平均分子量約2〇〇〇萬，陽離子 電何密度1.7meq/g’黏度600mPa· s，平均粒徑l〇〇〇nm ，SORMA公司製）的液體是從紙料的噴射流之間噴射（ 第3圖）。良率劑的添加量’相對於紙料爲〇.〇1 5重量％ 。從二流體噴嘴的外側噴射的流體（噴射流）的壓力是比 紙料的內壓局3.2 b a r ’從三流體噴嘴的內側噴射的流體（ -50- 201040354 混合流）壓力是比紙料的內壓高1 . 〇b ar。良率劑添加時的 紙料濃度爲1 · 1重量％。 將該紙料送往模組噴射型的高位調漿槽，從高位調漿 槽朝夾網型的抄紙網上噴射紙料，以抄紙速度125〇m/* 鐘、基重43 g/m2的條件藉由中性抄紙製造出報紙用紙原 紙。 在該原紙上，使用閘輥塗布機，將羥乙基化澱粉及陽 〇 離子性表面上膠劑（苯乙烯/丙烯酸酯共聚物）所構成的 表面塗布劑（羥乙基化澱粉的固體成分濃度爲6.0%，表 面上膠劑的固體成分濃度爲0.30%)均等地塗布於毛氈面 、抄紙網面這兩面，藉此獲得平版印刷用報紙用紙。羥乙 基化澱粉及陽離子性表面上膠劑的塗布量分別爲〇.7g/m2 (兩面合計）及0.04g/m2 (兩面合計）。 〔實施例2〕 〇 除了使實施例1之從外側噴射的流體壓力比內壓高 3.5 b ar以外，與實施例1同樣地獲得平版印刷用報紙用紙 〔實施例3〕 除了使實施例1之從內側噴射的流體壓力比內壓筒 0.5 b ar以外，與實施例1同樣地獲得平版印刷用報紙用紙 -51 - 201040354 〔實施例4〕 除了使實施例1之從外側噴射的流體壓力比內壓高 4. Ob ar以外，與實施例1同樣地獲得平版印刷用報紙用紙 〔實施例5〕 在實施例3 ’將良率劑取代成分散型直鏈狀的陽離子 性聚丙烯醯胺系良率劑（ND 3 00 ’重量平均分子量約1 500 萬，陽離子電荷密度2.1meq/g，黏度120mPa· s，平均粒 徑120nm，HYMO公司製），除此外是與實施例1同樣地 獲得平版印刷用報紙用紙。 〔實施例6〕 除了使實施例1之從外側噴射的流體壓力比內壓高 3 . Ob ar以外，與實施例1同樣地獲得平版印刷用報紙用紙 〔實施例7〕 除了使實施例1之從外側噴射的流體壓力比內壓高 2.5bar以外，與實施例1同樣地獲得平版印刷用報紙用紙 -52- 201040354Table 3 shows the results of the above examples. From the results of Examples 1 to 7 and Examples 8 to 1 1 , according to the present invention, the concentration of the liquid ejected from the outermost nozzle of the multi-fluid nozzle is 2.0% by weight or less from the three fluids. The concentration of the liquid ejected from the nozzle on the innermost side of the nozzle is 0.1% by weight or more lower than the concentration of the liquid ejected from the outermost nozzle, so that a better texture can be obtained, the yield of the paper stock and ash can be improved, and the paper surface defect and the paper break can be obtained. A decrease has occurred. In particular, from the comparison of Examples 1 to 3 and Examples 1 and 11, it is found that a good texture can be obtained by reducing the concentration of the liquid ejected from the outermost side of the three-fluid nozzle to 2.0% by weight or less. Paper defects and broken papers occur. Further, from the comparison between Example 5 and Example 6, it is found that when a dispersion type yield agent is used, a better texture can be obtained, the paper and ash are improved, and paper defects and paper breaks are obtained. The occurrence has decreased. 5. Production of newspaper paper for lithography (effect of jet pressure) [Example 1] 80 parts of DIP (freeness 200 ml), 15 parts of TMP (freeness 100 ml), and conifer bleached kraft paddle (NBKP, freeness 600 ml) 5 parts of the mixture were dissociated to prepare a pulp paste, and 80% of the light calcium carbonate relative to the solid content of the pulp was added as a dip in the pulp paste, and a cationic modified starch of 〇·5 % based on the solid content of the pulp was added. As an internal paper strength enhancer, a paper stock was prepared by adding aluminum sulfate of 2% based on the solid content of the pulp. Freeness is the Canadian standard freeness (C S F ), and the proportion of fibers above 1 mm in the stock is weighted by about 33%. Next, after the paper stock was passed through a screen to remove foreign matter, the yield agent was sprayed toward the paper stock in a place where the high-level slurry tank was reached within 5 seconds (Fig. 1). The injection of the yield agent was carried out using an injection device (TrumpJet, manufactured by Wetend Technologies, Inc.) having the three-fluid nozzle shown in Fig. 2, and the paper material taken out from the paper stream was ejected from the inside and the outside of the three-fluid nozzle. 'The emulsion-type linear polyacrylamide-based yielding agent (REALIZER R-300' weight average molecular weight about 20 million, cationic electricity density 1.7meq/g' viscosity 600mPa·s, The liquid having an average particle diameter of 10 nm and manufactured by SORMA Co., Ltd. was sprayed between jets of paper stock (Fig. 3). The amount of the yield agent added was 〇1.5% by weight relative to the paper stock. The pressure of the fluid (jet stream) ejected from the outside of the two-fluid nozzle is 3.2 bar 'injected from the inside of the three-fluid nozzle (the mixed flow of -50-201040354) than the internal pressure of the stock is higher than the inside of the stock The pressure is 1. 〇b ar. The stock concentration at the time of the addition of the yield agent was 1:1% by weight. The paper material is sent to the high-level slurry mixing tank of the module spraying type, and the paper material is sprayed from the high-position adjusting tank toward the net-type papermaking net, and the papermaking speed is 125〇m/* clock and the basis weight is 43 g/m2. The condition is to produce newspaper paper base paper by neutral papermaking. A surface coating agent (solid content of hydroxyethylated starch) composed of hydroxyethylated starch and an cation-ionic ionic sizing agent (styrene/acrylate copolymer) on the base paper using a gate roll coater The concentration of 6.0% and a solid content of the surface sizing agent of 0.30% were uniformly applied to both the felt surface and the paper surface, thereby obtaining newspaper paper for lithography. The coating amounts of the hydroxyethylated starch and the cationic surface sizing agent were respectively 〇7 g/m2 (total of both sides) and 0.04 g/m2 (total of both sides). [Example 2] A lithographic newspaper paper was obtained in the same manner as in Example 1 except that the fluid pressure ejected from the outside in Example 1 was 3.5 b higher than the internal pressure. [Example 3] In the same manner as in the first embodiment, a newspaper paper for lithographic printing was obtained in the same manner as in the first embodiment except that the pressure of the fluid injected from the inside was 0.5 b ar. [Example 4] In addition to the fluid pressure of the first embodiment, the fluid pressure was injected from the outside. A paper for lithographic printing paper was obtained in the same manner as in Example 1 except that the pressure was 4. Ob ar. [Example 5] In Example 3, the yield agent was replaced by a cationic linear polypropylene amide which was dispersed in a linear form. A lithographic printing agent (ND 3 00 'weight average molecular weight: about 15 million, a cationic charge density of 2.1 meq/g, a viscosity of 120 mPa·s, an average particle diameter of 120 nm, manufactured by HYMO Co., Ltd.) was obtained in the same manner as in Example 1. Use newspaper paper. [Example 6] A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that the fluid pressure ejected from the outside in Example 1 was higher than the internal pressure by 3 Å [Example 7]. A newspaper paper for lithographic printing was obtained in the same manner as in Example 1 except that the fluid pressure ejected from the outside was 2.5 bar higher than the internal pressure. -52 - 201040354
表4 具有三流體噴嘴之噴射裝置 的應力 壓力差 自率劑 抄紙 紙料 良率 % 灰分 良率 % 質地 紙面 缺陷 個 斷紙 基重 灰分 碳酸鈣 含量 % 噴射流外側(a) 混合流內側(b) (a)·⑻ m/奋鐘 紙 g/m2 % 實施例1 +3«2bar +1.0bar 2.2bar R300 1283 48.4 16.6 4.9 64 0.5 43.1 12.1 7.2 實施例2 +3.5bar +].0bar 2.5bar R300 1290 48.9 16.9 4.8 60 0.4 432 12.2 7.4 實施例3 +3.5bar +0.5bar 3.0bar R300 1287 A92 17.0 4.7 53 0.5 432 122 7.4 實施例4 +4.0bar +1.0bar 3.0bar R3O0 1284 48.5 16.3 5*2 66 0.6 43.1 12.1 7.3 實施例5 +3.5bar +0.5bar 3.0bar ND300 1282 50.1 17.5 4.5 40 0.4 43.3 12.3 7.5 寊施例6 +3.0bar +1.0bar 2.0bar R300 1285 48.9 16.7 5.3 121 1.0 43·2 12.2 12 實施例7 +2.5bar +l,0bar I.5bar R300 1286 49.0 17.0 5,8 190 1.4 432 12.2 72 Ο 表4顯示上述實施例的結果。 從實施例1〜5和實施例6、7的結果得知，依據本發 明使從外側噴射的流體（噴射流）的壓力比紙料流的壓力 高3 · 1 b ar以上，藉此在同等級的紙料及灰分的良率下，可 獲得更良好的質地’並減少紙面缺陷和斷紙的發生。特別 是從實施例1和實施例7的比較得知，在從內側噴射的流 體（混合流）的壓力相同的情況，從外側噴射的流體（噴 〇 ㈣> 之壓力越高’質地越良好而越能減少紙面缺陷和斷 紙的發生。 此外’從實施例3和實施例5的比較得知，在使用分 散型的良率劑時’可獲得更良好的質地，紙料及灰分的良 率提高’且紙面缺陷和斷紙的發生減少。 【圖式簡單說明】 第1圖係顯7K本發明的一態樣之製紙用藥品的添加位 置之示意圖。 第2圖係顯示本發明的一態樣之從多流體噴嘴所噴射 -53 - ' 201040354 的流體流之示意圖。 第3圖係顯示本發明的一態樣之液體流的示意圖。 【主要元件符號說明】 1 1 :原料 12 :第1槽 13 :第2槽 1 4 :喂料箱 1 5 :第1扇泵 1 6 :第2扇栗 1 7 :篩網 1 8 :噴射裝置 1 9 :高位調漿槽 2 1 :外側流 22 :製紙用藥品流 2 3 :內側流 24 :紙料流 3 1 :篩網 32 :泵 3 3 :噴射裝置 3 4 :高位調漿槽 54-Table 4 Stress pressure difference of the spray device with three-fluid nozzles Self-rate agent paper stock yield % ash yield % texture paper defect paper break base ash calcium carbonate content % outside of the jet (a) inside the mixed stream (b ) (a)·(8) m/奋钟纸g/m2 % Example 1 +3«2bar +1.0bar 2.2bar R300 1283 48.4 16.6 4.9 64 0.5 43.1 12.1 7.2 Example 2 +3.5bar +].0bar 2.5bar R300 1290 48.9 16.9 4.8 60 0.4 432 12.2 7.4 Example 3 +3.5 bar +0.5 bar 3.0 bar R300 1287 A92 17.0 4.7 53 0.5 432 122 7.4 Example 4 +4.0 bar +1.0 bar 3.0 bar R3O0 1284 48.5 16.3 5*2 66 0.6 43.1 12.1 7.3 Example 5 +3.5bar +0.5bar 3.0bar ND300 1282 50.1 17.5 4.5 40 0.4 43.3 12.3 7.5 寊Example 6 +3.0bar +1.0bar 2.0bar R300 1285 48.9 16.7 5.3 121 1.0 43·2 12.2 12 Example 7 + 2.5 bar + l, 0 bar I. 5 bar R300 1286 49.0 17.0 5, 8 190 1.4 432 12.2 72 Ο Table 4 shows the results of the above examples. From the results of Examples 1 to 5 and Examples 6 and 7, it is understood that according to the present invention, the pressure of the fluid (jet stream) ejected from the outside is higher than the pressure of the paper stream by more than 3 · 1 b ar, thereby Under the grade of paper and ash yield, a better texture can be obtained' and paper defects and paper breaks can be reduced. In particular, from the comparison between the first embodiment and the seventh embodiment, when the pressure of the fluid (mixed flow) injected from the inside is the same, the higher the pressure of the fluid (the sneeze (4)> injected from the outside is, the better the texture is. The more the paper surface defects and the occurrence of paper breaks can be reduced. Further, from the comparison of Example 3 and Example 5, it is found that a better texture can be obtained when a dispersion type yield agent is used, and the yield of paper stock and ash is improved. 'And the occurrence of paper defects and paper breaks is reduced. [Simplified description of the drawings] Fig. 1 is a schematic view showing the position of addition of a drug for papermaking according to an aspect of the present invention. Fig. 2 is a view showing an aspect of the present invention. Schematic diagram of fluid flow ejected from a multi-fluid nozzle -53 - '201040354. Fig. 3 is a schematic view showing a liquid flow of an aspect of the present invention. [Explanation of main components] 1 1 : Raw material 12: 1st groove 13 : 2nd slot 1 4 : Feeding box 1 5 : 1st fan 1 6 : 2nd fan 1 7 : Screen 1 8 : Spraying device 1 9 : High-level slurry tank 2 1 : Outer flow 22 : Paper making Flow of medicine 2 3 : inside flow 24 : paper stream 3 1 : screen 32 : pump 3 3 : spray Device 3 4 : High position slurry tank 54-