| 发明名称 |
METHOD OF PRODUCING ULTRA HIGH YIELD PULP |
| 摘要 |
<p>- An ultra high yield chemimechanical pulping process is provided in which softwood chips are cooked, in a liquid phase or a vapour phase, with acid sulphite having a low pH. The treated chips are subsequently refined in an atmospheric and/or thermomechanical refining system yielding pulps of high strength and brightness.</p> |
| 申请公布号 |
CA1094263(A) |
申请公布日期 |
1981.01.27 |
| 申请号 |
CA19760260981 |
申请日期 |
1976.09.10 |
| 申请人 |
PULP AND PAPER RESEARCH INSTITUTE OF CANADA |
发明人 |
ATACK, DOUGLAS |
| 分类号 |
D21C3/04;D21B1/12;D21C3/06;(IPC1-7):21C3/04 |
主分类号 |
D21C3/04 |
| 代理机构 |
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代理人 |
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