发明名称 |
Twin wire web forming with wire tension control |
摘要 |
A twin wire web forming machine suitable for making newsprint or slower draining grades of product is provided with a substantially continuously curving S-shaped formation and dewatering path, wherein one of the wires diverges from the web subsequent to passage through a formation zone lying about an arc of a first roll, a suction compartment within a couch roll at the point of wire divergence assuring continued adherence of the web to the remaining wire as it passes around the couch roll. A brake is controlled on the first roll to provide a predetermined value of wire tension.
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申请公布号 |
US4160694(A) |
申请公布日期 |
1979.07.10 |
申请号 |
US19770863945 |
申请日期 |
1977.12.23 |
申请人 |
DOMINION ENGINEERING WORKS LIMITED |
发明人 |
FUTCHER, RALPH J. |
分类号 |
D21F9/00;(IPC1-7):D21F1/40;D21F7/02 |
主分类号 |
D21F9/00 |
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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