发明名称 |
Method for increasing filler retention of cellulosic fiber sheets |
摘要 |
A method for increasing filler retention of cellulosic fiber sheets is disclosed. In the method, cellulosic fibers with increased anionic sites are treated with either positively charged filler particles and/or amphoteric filler particles or a cationic retention aid and negatively charged filler particles and/or amphoteric filler particles. Cellulosic fiber sheets with retained filler particles are also disclosed.
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申请公布号 |
US6514384(B1) |
申请公布日期 |
2003.02.04 |
申请号 |
US19990272865 |
申请日期 |
1999.03.19 |
申请人 |
WEYERHAEUSER COMPANY |
发明人 |
JEWELL RICHARD A.;NEOGI AMAR N.;WHITE STEVEN J. |
分类号 |
D21H21/10;D21H11/20;D21H13/04;D21H17/29;D21H17/37;D21H17/45;D21H17/55;D21H17/67;D21H17/68;D21H23/76;(IPC1-7):D21H11/20 |
主分类号 |
D21H21/10 |
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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