发明名称 Method for producing a delignified papermaking fiber from recycled high lignin content waste paper and product thereof
摘要 <p>A method is disclosed for producing, in a continuous throughput, high quality paper from recycled waste paper utilizing high consistency, low shear pulping, followed by a series of cleaning steps to produce a wet, friable pulp which is digested and optionally bleached. The resulting pulp can be run on a paper machine alone or blended with virgin pulp to produce a paper containing at least 5% by weight recycled paper with less than 20 ppm per unit area solid non-fibrous contaminants larger than 0.3 mm<2> , and which may be blade coated on a high speed paper machine.</p>
申请公布号 HK1006120(A1) 申请公布日期 2000.03.17
申请号 HK19980105360 申请日期 1998.06.16
申请人 WESTVACO CORPORATION 发明人 MARK ALAN HANK;LEO THOMAS MULCAHY;RALPH SCOTT PETERSON;ROBERT CHARLES STREISEL
分类号 D21C5/02;D21B1/32;D21D5/00;D21H11/14;D21H19/40;D21H25/10;D21H27/16;(IPC1-7):D21B 主分类号 D21C5/02
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