Paper making and fiber liberation – Apparatus – Measuring – testing – inspecting – indicating or illuminating
Patent
1998-03-11
2000-06-13
Fiorilla, Christopher A.
Paper making and fiber liberation
Apparatus
Measuring, testing, inspecting, indicating or illuminating
162253, D21F 706
Patent
active
060745312
ABSTRACT:
A device in a measuring station in a paper or cardboard machine for manufacturing a paper or cardboard web, said measuring station being situated between two work stations and comprising a scanner with two measuring heads travelling to and fro across the web and between them defining a space through which the web passes, driven by drive members. According to the invention the device comprises a continuous, flexible support strip extending through said space between the measuring heads, transverse and parallel to the web from one edge to the other, and drive members for winding and unwinding the support strip onto or off rolls arranged at points outside each edge of the web, for displacement of the support strip transversely to the web in the same direction and at the same speed as the measuring heads. The support strip is provided with at least one through-opening to expose the web to at least one measuring transducer, the emitter and receiver units of which being situated in individual measuring heads or the same measuring head.
REFERENCES:
patent: 3650043 (1972-03-01), Overly et al.
patent: 4321107 (1982-03-01), Page
patent: 5164048 (1992-11-01), Bossen et al.
patent: 5233195 (1993-08-01), Hellstrom et al.
patent: 5492601 (1996-02-01), Ostermayer et al.
patent: 5745244 (1998-04-01), Svanqvist et al.
Hultcrantz Lars-Magnus
Ortemo Bo Lennart
Svanqvist Tord Olof
Fiorilla Christopher A.
Valmet-Karlstad AB
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