Title:
【発明の名称】抄紙機の湿部における装置
Document Type and Number:
Japanese Patent JP2003513179
Kind Code:
A
Abstract:
At the end of the twin wire zone of a paper machine former, a suction box ( 17 ) inside the upper wire loop ( 11 ) has a curved lid ( 17 ') opposite a roll ( 18 ) within the lower wire loop ( 10 ). The lid is curved in a run situation so the tension of the upper wire ( 11 ) reduces the normal force between the wire ( 11 ) and the lid ( 17 ') caused by the underpressure of the suction box. The underpressure keeps the web mainly off from the roll ( 18 ) and the lower wire ( 10 ) while being adhered to the underside of the upper wire ( 11 ) and conforming to the curved shape of the lids. Members ( 17 a , 18 ') are provided for making the web follow the lower wire ( 10 ) in a break situation for conducting it to the broke handling system.
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Inventors:
Heikkila, Pertti
Poikolainen, Antti
Puultinen, Ali
Poikolainen, Antti
Puultinen, Ali
Application Number:
JP2001533249A
Publication Date:
April 08, 2003
Filing Date:
October 26, 2000
Export Citation:
Assignee:
Metso Paper Inc.
International Classes:
D21F1/40; D21F2/00; D21F9/00; (IPC1-7): D21F2/00; D21F1/40
Attorney, Agent or Firm:
Takao Katori