发明名称 |
Crotalaria juncea paper pulps |
摘要 |
The present process produces a long fiber suitable for making various paper products. The long fiber is derived from Crotalaria juncea. The processing consists of a particular technique for preparing the fiber for digestion and a particular digestion sequence. In the preparation of the fiber for digestion it is dried to less than about 30 percent moisture, moist depithed, washed and wet depithed. The fiber is then processed at a high caustic concentration using a sequence of digestion-pressure reduction-digestion. Optionally there can be a third stage of digestion with a pressure reduction prior to the digestion. After digestion has been completed the fiber is refined and sent to blowdown. The fiber is then screened, washed and bleached. The resulting long fiber will product a high quality paper or is admixed with short fibers and various paper products can be made.
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申请公布号 |
US4889591(A) |
申请公布日期 |
1989.12.26 |
申请号 |
US19880199804 |
申请日期 |
1988.05.27 |
申请人 |
PROCESS EVALUATION AND DEVELOPMENT CORPORATION |
发明人 |
VILLAVICENCIO, EDUARDO J.;GOMEZ-ESTEVEZ, CAMILO |
分类号 |
D21B1/02;D21C3/02 |
主分类号 |
D21B1/02 |
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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