发明名称 |
METHOD FOR MAKING PAPER AND CARDBOARD |
摘要 |
<p>The invention concerns an improved method for making paper which consists in using as main retention agent a branched polymer prepared in invert emulsion and bentonite as secondary retention agent (dual type system). The two additions are separated by a step for shearing the fibrous suspension (or mass). The invention enables to obtain a highly improved retention and also highly improved dewatering. Moreover, it enables to reduce the bentonite content in the white water.</p> |
申请公布号 |
EP1092064(B1) |
申请公布日期 |
2003.11.19 |
申请号 |
EP19990923647 |
申请日期 |
1999.06.01 |
申请人 |
SNF, S.A. |
发明人 |
HUND, RENE;JEHN-RENDU, CHRISTIAN |
分类号 |
D21H17/37;D21H17/68;D21H21/10;D21H23/14;D21H23/76;(IPC1-7):D21H23/76 |
主分类号 |
D21H17/37 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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