发明名称 |
Foam forming method and apparatus. |
摘要 |
<p>Apparatus and process for producing foam formed fibrous web in which the furnish is made up by mixing a thin water slurry of fibers at a consistency in the range of from about 0.5 to about 7 weight percent fibers with sufficient aqueous foam containing a surfactant and having an air content in the range of from about 55 to about 80 percent by volume to form a foamed fiber furnish containing from about 0.1 to about 3 weight percent fibers which is supplied directly to the forming felt (11) or wire of a twin wire papermaking machine, adding makeup surfactant and discarding excess aqueous foam from the process as required to maintain the desired volume of foamed liquid therein. <IMAGE></p> |
申请公布号 |
EP0481745(A1) |
申请公布日期 |
1992.04.22 |
申请号 |
EP19910309514 |
申请日期 |
1991.10.16 |
申请人 |
JAMES RIVER CORPORATION OF VIRGINIA |
发明人 |
DWIGGINS, JOHN HENRY;BHAT, DINESH W. |
分类号 |
D21F11/14;D21F11/00;D21H17/05;D21H23/00;D21H27/00 |
主分类号 |
D21F11/14 |
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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