JP2002201590A5 - - Google Patents

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Publication number
JP2002201590A5
JP2002201590A5 JP2000400959A JP2000400959A JP2002201590A5 JP 2002201590 A5 JP2002201590 A5 JP 2002201590A5 JP 2000400959 A JP2000400959 A JP 2000400959A JP 2000400959 A JP2000400959 A JP 2000400959A JP 2002201590 A5 JP2002201590 A5 JP 2002201590A5
Authority
JP
Japan
Prior art keywords
pulp
calcium carbonate
parts
white carbon
mass ratio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000400959A
Other languages
Japanese (ja)
Other versions
JP2002201590A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2000400959A priority Critical patent/JP2002201590A/en
Priority claimed from JP2000400959A external-priority patent/JP2002201590A/en
Publication of JP2002201590A publication Critical patent/JP2002201590A/en
Publication of JP2002201590A5 publication Critical patent/JP2002201590A5/ja
Pending legal-status Critical Current

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Description

【0016】
【実施例】
以下、本発明の実施例を示す。なお、以下断りのない限り部及び%は絶乾質量基準でいう。
(実施例1)
古紙パルプ60質量部、TMPパルプ40質量部、からなるパルプスラリー(原料パルプ)に、ホワイトカーボン(トクヤマ製:トクシール(見掛比重が0.17g/ml、比表面積が169m2/g、コールターカウンター法による粒度分布としてD50μmが4.6、D80μmが9.1、D97μmが20.2、吸油量234ml/100g))と炭酸カルシウム(奥多摩工業製:タマパール)とを、JIS P 8128に規定の550℃の灰分の原子吸光分析におけるSiO2とCaOとの質量割合が5:5、対パルプ絶乾質量割合が2%となるように添加し、さらに、歩留向上剤を0.2部、サイズ剤を0.2部添加して、ツインワイヤー抄紙機によりpH7で抄紙し、坪量43g/ 2 の新聞用紙を得た。
[0016]
【Example】
Hereinafter, examples of the present invention will be shown. In the following, parts and% are based on bone dry mass unless otherwise noted.
Example 1
White carbon (made by Tokuyama: Tok Seal (apparent specific gravity: 0.17 g / ml, specific surface area: 169 m 2 / g, Coulter Counter) to a pulp slurry (raw pulp) consisting of 60 parts by mass of waste paper pulp and 40 parts by mass of TMP pulp As particle size distribution according to the method, D 50 μm is 4.6, D 80 μm is 9.1, D 97 μm is 20.2, oil absorption amount is 234 ml / 100 g)) and calcium carbonate (Ohtama Industrial Co., Ltd .: Tama Pearl), JIS It is added so that the mass ratio of SiO 2 and CaO in the atomic absorption analysis of the ash content at 550 ° C. specified in P 8128 is 5: 5 and the mass ratio to the bone dry of pulp is 2%, and a retention aid is further added. 0.2 parts and 0.2 parts of a sizing agent were added, and papermaking was conducted at pH 7 using a twin-wire paper machine to obtain newsprint paper having a basis weight of 43 g / m 2 .

【0017】
(実施例2〜5)
実施例1の填料(ワイトカーボン及び炭酸カルシウム)の対パルプ絶乾質量割合を変化させて、実施例2〜5とした。
[0017]
(Examples 2 to 5)
By changing the pulp absolute dry mass ratio of filler of Example 1 (the White carbon and calcium carbonate), and as in Examples 2-5.

【0018】
(比較例1)
実施例3のワイトカーボン及び炭酸カルシウムの質量比を変え、比較例1とした。
[0018]
(Comparative example 1)
Changing the mass ratio of the White carbon and calcium carbonate of Example 3, were as in Comparative Example 1.

【0019】
(比較例2)
実施例3のワイトカーボン及び炭酸カルシウムの質量比を変え(炭酸カルシウムを添加せず、ホワイトカーボンのみを添加した。)、比較例2とした。
[0019]
(Comparative example 2)
Changing the mass ratio of the White carbon and calcium carbonate of Example 3 (without addition of calcium carbonate, was added only white carbon.) Were Comparative Example 2.

JP2000400959A 2000-12-28 2000-12-28 Paper for newspaper and method for producing the same Pending JP2002201590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000400959A JP2002201590A (en) 2000-12-28 2000-12-28 Paper for newspaper and method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000400959A JP2002201590A (en) 2000-12-28 2000-12-28 Paper for newspaper and method for producing the same

Publications (2)

Publication Number Publication Date
JP2002201590A JP2002201590A (en) 2002-07-19
JP2002201590A5 true JP2002201590A5 (en) 2004-09-09

Family

ID=18865458

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000400959A Pending JP2002201590A (en) 2000-12-28 2000-12-28 Paper for newspaper and method for producing the same

Country Status (1)

Country Link
JP (1) JP2002201590A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050107579A (en) * 2003-03-25 2005-11-14 닛뽄세이시가부시끼가이샤 Newsprint paper for offset printing
JP4605518B2 (en) * 2003-09-24 2011-01-05 ハリマ化成株式会社 Method for producing newsprint containing rosin emulsion sizing agent for newsprint
JP4592303B2 (en) * 2004-03-03 2010-12-01 大王製紙株式会社 Method for producing pseudo-neutral newsprint
US7611606B2 (en) 2004-03-30 2009-11-03 Nippon Paper Industries Co., Ltd. Low-density neutral paper
JP2006063481A (en) * 2004-08-26 2006-03-09 Daio Paper Corp Newsprint
JP2006063501A (en) * 2004-08-30 2006-03-09 Daio Paper Corp Paper for newspaper
JP5087209B2 (en) * 2004-10-29 2012-12-05 大王製紙株式会社 Method for producing neutral newsprint
JP4577042B2 (en) * 2005-02-28 2010-11-10 王子製紙株式会社 Newspaper for offset printing
JP4732004B2 (en) * 2005-05-27 2011-07-27 大王製紙株式会社 Newspaper
JP5135012B2 (en) * 2008-03-18 2013-01-30 大王製紙株式会社 Newspaper and production method thereof
JP5615506B2 (en) * 2009-03-30 2014-10-29 大王製紙株式会社 Newspaper

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