JP2008297663A - 多層抄き板紙 - Google Patents
多層抄き板紙 Download PDFInfo
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- JP2008297663A JP2008297663A JP2007145236A JP2007145236A JP2008297663A JP 2008297663 A JP2008297663 A JP 2008297663A JP 2007145236 A JP2007145236 A JP 2007145236A JP 2007145236 A JP2007145236 A JP 2007145236A JP 2008297663 A JP2008297663 A JP 2008297663A
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Abstract
【解決手段】基紙の少なくとも片面に、少なくとも平均粒子径が2〜90μmの中空無機粒子と防湿剤とバオンダとを含有する塗工液を塗布して塗工層を設ける。また、塗工層中に有機中空粒子及び/又はシリカ粒子を含有する。
【選択図】図1
Description
上述した塗工液の塗工量は、片面当り固形重量で2g/m2以上60g/m2以下であることが好ましい。これにより、本板紙の印刷適性を向上させることができるとともに、表面強度を向上させることができるので罫線割れの発生を少なくすることができる。
<1>表層
針葉樹晒クラフトパルプ(NBKP)30質量%と、広葉樹晒クラフトパルプ(LBKP)30質量%と、上質古紙パルプ40質量%とを配合した後に、離解フリーネスを380ccに調整した原料パルプに、硫酸バンド4質量%、サイズ剤(近代化学工業株式会社製R50)を固形分として0.3質量%添加して表層用の原料スラリーを調整した。なお、「離解フリーネス(cc)」は、各試料を約3cm2の大きさに裁断して約25gの重さの試験片とし、この試験片を1リットルの水に24時間浸漬した後、JIS−P8220に準拠して標準離解機で15分間離解処理し、試験片が完全に離解していることを目視で確認した後、JIS−P8121に準拠してカナダ標準濾水度試験機にて測定した濾水度の値である(以下、同様)。
<2>中層(1)
ケント古紙パルプ60質量%と上質古紙パルプ40質量%とを配合した後に、離解フリーネスを350ccに調整した原料パルプに、硫酸バンド4質量%、サイズ剤(近代化学工業株式会社製R50)を固形分として0.3質量%添加して原料スラリーを調整した。
<3>中層(2)、(3)及び裏層
地券古紙パルプ100質量%を、離解フリーネス280ccに調整し、硫酸バンド4質量%、サイズ剤(R50)を固形分として0.3質量%添加して原料スラリーを調整した。
このように形成された基紙の少なくとも表層の表面に塗布して塗工層を形成する塗工液について説明する。すなわち、表1に示すように、本発明に係る24種類の塗工液と、本発明を比較検討するために5種類の塗工液を作製した。なお、表中の「%」は全て固形重量%を示す。
[中空無機粒子]
(A)平均粒子径1.5μm(東海工業株式会社製)
(B)平均粒子径2.0μm(東海工業株式会社製)
(C)平均粒子径90μm(東海工業株式会社製)
(D)平均粒子径92μm(東海工業株式会社製)
(a)平均粒子径4μm(東海工業株式会社製)
(b)平均粒子径40μm(東海工業株式会社製)
[有機中空粒子]
(E)平均粒子径0.05μm(三井化学株式会社製)
(F)平均粒子径0.1μm(三井化学株式会社製)
(G)平均粒子径10μm(三井化学株式会社製)
(H)平均粒子径11μm(三井化学株式会社製)
[シリカ粒子]
(I)平均粒子径0.03μm(奥多摩工業株式会社製)
(J)平均粒子径0.05μm(奥多摩工業株式会社製)
(K)平均粒子径10μm(奥多摩工業株式会社製)
(L)平均粒子径11μm(奥多摩工業株式会社製)
[バインダ]
SBRスマーテックス、Tg−5℃、固形分50%(日本エーアンドエル株式会社製)
[防湿剤]
OP670、Tg−10℃、固形分40%(一方社油脂工業株式会社製)
このような中空無機粒子、有機中空粒子、シリカ粒子、バインダ、及び防湿剤を表1に示す通りに配合し、全固形濃度を65%に調整した塗工液を調整した。
上述したようにして得た基紙の片面に、上述したように調整した塗工液を、片面当りの固形重量で表1に示す塗工量を、抄紙機に設置したオンマシンバーコーターにて塗工する。
Claims (5)
- 基紙の少なくとも片面に、少なくとも平均粒子径が2〜90μmの中空無機粒子と防湿剤とバオンダとを含有する塗工液を塗布して塗工層を設けたことを特徴とする多層抄き板紙。
- 前記塗工層中には、有機中空粒子及び/又はシリカ粒子が含有されることを特徴とする請求項1に記載の多層抄き板紙。
- 前記塗工層は、前記中空無機粒子の固形重量含有率が15%以上95%以下であることを特徴とする請求項1又は請求項2に記載の多層抄き板紙。
- 前記塗工層の塗工量は固形重量で2g/m2以上60g/m2以下であることを特徴とする請求項1ないし請求項3のいずれかに記載の多層抄き板紙。
- 前記請求項1から請求項4のいずれかに記載の多層抄き板紙を用いた包装容器。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2007145236A JP4961266B2 (ja) | 2007-05-31 | 2007-05-31 | 多層抄き板紙及びこの板紙を用いた包装容器 |
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JP2007145236A JP4961266B2 (ja) | 2007-05-31 | 2007-05-31 | 多層抄き板紙及びこの板紙を用いた包装容器 |
Publications (2)
Publication Number | Publication Date |
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JP2008297663A true JP2008297663A (ja) | 2008-12-11 |
JP4961266B2 JP4961266B2 (ja) | 2012-06-27 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010159522A (ja) * | 2009-01-09 | 2010-07-22 | Daio Paper Corp | 印刷光沢に優れた塗工紙 |
JP2010242247A (ja) * | 2009-04-03 | 2010-10-28 | Daio Paper Corp | 多層抄き紙 |
JP2020056131A (ja) * | 2018-10-02 | 2020-04-09 | 大王製紙株式会社 | 包装容器用塗工紙及び包装容器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000220094A (ja) * | 1999-01-26 | 2000-08-08 | Sanyo Chem Ind Ltd | 防湿紙の防湿層形成用組成物 |
JP2004091976A (ja) * | 2002-08-30 | 2004-03-25 | Daio Paper Corp | 断熱紙 |
JP2006307377A (ja) * | 2005-04-28 | 2006-11-09 | Daio Paper Corp | 防湿紙およびこれを用いた防湿段ボール紙 |
-
2007
- 2007-05-31 JP JP2007145236A patent/JP4961266B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000220094A (ja) * | 1999-01-26 | 2000-08-08 | Sanyo Chem Ind Ltd | 防湿紙の防湿層形成用組成物 |
JP2004091976A (ja) * | 2002-08-30 | 2004-03-25 | Daio Paper Corp | 断熱紙 |
JP2006307377A (ja) * | 2005-04-28 | 2006-11-09 | Daio Paper Corp | 防湿紙およびこれを用いた防湿段ボール紙 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010159522A (ja) * | 2009-01-09 | 2010-07-22 | Daio Paper Corp | 印刷光沢に優れた塗工紙 |
JP4542188B2 (ja) * | 2009-01-09 | 2010-09-08 | 大王製紙株式会社 | 印刷光沢に優れた塗工紙 |
JP2010242247A (ja) * | 2009-04-03 | 2010-10-28 | Daio Paper Corp | 多層抄き紙 |
JP2020056131A (ja) * | 2018-10-02 | 2020-04-09 | 大王製紙株式会社 | 包装容器用塗工紙及び包装容器 |
JP7255991B2 (ja) | 2018-10-02 | 2023-04-11 | 大王製紙株式会社 | 包装容器用塗工紙及び包装容器 |
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JP4961266B2 (ja) | 2012-06-27 |
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