发明名称 |
PROCESSES FOR PREPARING PULP AND PAPER |
摘要 |
<p>The purpose of the present invention is to provide technology for regenerating pulp having high quality with compact pulp regenerating equipment and less energy. In the pulp regenerating method of the present invention, pulp slurry containing 1.5 wt% or more of a solid component including waste paper pulp is separated into a long fiber fraction and a short fiber fraction by using an outward type slit screen including an opening portion having a slit width in the range of 0.1 mm to 0.3 mm. The solid component ratio of the long fiber fraction and the short fiber fraction is in the range from 10:90 to 60:40, and the difference in Canadian Standard Freeness of the long fiber fraction and the short fiber fraction is in the range of 100 ml to 300 ml.</p> |
申请公布号 |
CA2831570(A1) |
申请公布日期 |
2012.10.04 |
申请号 |
CA20122831570 |
申请日期 |
2012.01.24 |
申请人 |
NIPPON PAPER INDUSTRIES CO. LTD.;AIKAWA IRON WORKS CO., LTD. |
发明人 |
GOTO, SHISEI;NODA, TAKAHARU;OHTAKE, HIROKI;HOSAKA, TATSUMI |
分类号 |
D21D5/02;D21C5/02;D21H11/14 |
主分类号 |
D21D5/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|