发明名称 Drawing a web through a multi-cylinder drying section
摘要 A multiculer dryer in a paper machine, having several successive cylinder sections of which one or more are equipped with a twin-wire draw in a manner such that a web being dried is drawn unsupported between cylinder rows. A closed draw is used in section gaps in a manner such that a drawing or supporting wire of a preceding section is conveyed to contact a top cylinder of a following section at a small angle. A special section gap cylinder is used near the section gap, the cylinder either not being driven or which from a point of view of the drive, belongs to the preceding drying section. The drying wire of the preceding section is wound over the section gap cylinder, preferably over a sector greater than about 180 DEG , this drying wire either being a single wire-wire draw drying wire or a top wire of a preceding section twin-wire draw. The web supported by the wire is guided as an essentially vertical run from the sector of the section gap cylinder to the top cylinder of the next section. There is an open space below the section gap cylinder which allows a waste web to be removed by gravity.
申请公布号 US4888883(A) 申请公布日期 1989.12.26
申请号 US19880178208 申请日期 1988.04.06
申请人 VALMET PAPER MACHINERY INC. 发明人 KERTTULA, REIMA
分类号 D21F5/04;F26B13/08 主分类号 D21F5/04
代理机构 代理人
主权项
地址