发明名称 |
PAPERMAKING MACHINE WITH AN IMPERMEABLE TRANSFER BELT AND ASSOCIATED METHOD |
摘要 |
An apparatus for transferring a wet paper web from a press nip to a drying cylinder (52) of a papermaking machine, and for structuring the web, comprises an impermeable transfer belt (35) having a web-contacting surface, the wet paper web passing through the press nip enclosed between a press felt (33) and the transfer belt, and a permeable structuring fabric (37) for transfer of the web onto the drying cylinder, the structuring fabric having a structured surface and being arranged in a loop within which a suction transfer device (38) is disposed, said suction transfer device having a suction zone (41). According to the invention the web-contacting surface of the belt has a non-uniform distribution of microscopic-scale depressions, and that the suction zone includes a transfer point (40) spaced a distance D from the press nip along which the belt runs, the belt being arranged to bring the web into contact with the structuring fabric in the suction zone for a length L, such that suction is exerted on the paper web to transfer the paper web from the belt onto the structuring fabric. at the transfer point. |
申请公布号 |
EP2078108(A1) |
申请公布日期 |
2009.07.15 |
申请号 |
EP20070835140 |
申请日期 |
2007.10.26 |
申请人 |
METSO PAPER KARLSTAD AB |
发明人 |
BEUTHER, PAUL DOUGLAS;HADA, FRANK STEPHEN;HOLZ, JEFFREY DEAN;IVARSSON, HANS;KLERELID, INGVAR;RAGARD, JOHAN ULF |
分类号 |
D21F11/00;D21F3/04;D21F7/08;D21F11/14 |
主分类号 |
D21F11/00 |
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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