Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Patent
1985-07-02
1987-09-08
Chin, Peter
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
162193, 162255, 162286, D21F 142
Patent
active
046922156
ABSTRACT:
Apparatus for conveying a web lead-in strip in a paper machine in a controlled manner includes a conveyor belt arranged in a loop around one or more reversing rolls, the conveyor belt being formed of an air-pervious fabric. Devices are arranged within the loop of the conveyor belt for creating a dynamic vacuum on the belt run on which the lead-in strip is conveyed to cause the lead-in strip to adhere to that belt run. The devices comprise guide plates associated with respective air distributing headers which direct air jets over the guide plates. The guide plates are arranged substantially parallel to the plane of the conveying run of the belt in a manner such that a dynamic vacuum is created which acts on the conveying run to cause the lead-in strip of the web to adhere to the conveying run of the conveyor belt. The apparatus is lightweight and compact in construction and permits the lead-in procedure to be automated to such an extent that no manual operations are required.
REFERENCES:
patent: 3355349 (1967-11-01), Devlin
patent: 3756912 (1973-09-01), Rooney
patent: 4501643 (1985-02-01), Kiuru
patent: 4551203 (1985-11-01), Eskelinen
Chin Peter
Valmet Oy
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