Optics: measuring and testing – By monitoring of webs or thread
Patent
1996-08-09
1998-04-28
McGraw, Vincent P.
Optics: measuring and testing
By monitoring of webs or thread
162263, 25044211, 25055948, 356431, G01N 2186, G01N 2189
Patent
active
057452440
ABSTRACT:
The invention relates to a scanning device (1) for measuring physical properties of a moving fibrous web (2) which has two longitudinal edges and is intended to run in a predetermined path of movement past or through the scanning device (1). The device (1) has a carriage (11) carrying a scanning head (14). The carriage (11) is movably supported for movement transversely to the direction of movement of the web (2). A drive (12) is provided which imparts to the carriage (11) a reciprocating movement from one edge side of the web (2) to the other, during which the scanning of the web (2) is carried out. The scanning device (1) is fitted with means (21, 31, 32, 33, 36) associated with the carriage for providing, in essentially the same plane as the predetermined path of movement of the web (f), a planar web supporting surface at locations between the carriage (11) and the two longitudinal edges of the web (2) during passage of the web (2) past the scanning device (1). The invention reduces the occurrence of web breakage and improves the accuracy of the measurement.
REFERENCES:
patent: 3650043 (1972-03-01), Overly et al.
patent: 4321107 (1982-03-01), Page
patent: 4753015 (1988-06-01), Eriksen
patent: 5164048 (1992-11-01), Bossen et al.
patent: 5233195 (1993-08-01), Hellstrom et al.
Valmet Automation Brochure: PaperIQ--The All-New Distributed Measurement
Valmet Automation Brochure: IQScanner--The Platform for Valmet's
Valmet Automation Brochure: IQWeight--A Member of Valmet's Intelligent
Valmet Automation Brochure: IQMoisture--A Member of Valmet's Intelligent
Valmet Automation Brochure: IQCaliper--A Member of Valmet's Intelligent
Valmet Automation Brochure: IQAsh--A Member of Valmet's Intelligent Sensor
Valmet Automation Brochure: IQColor--A Member of Valmet's Intelligent
Ortemo B. Lennart H.
Svanqvist Tord O. S.
McGraw Vincent P.
Valmet-Karlstad AB
LandOfFree
Scanning device for scanning a physical property of a fibrous we does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scanning device for scanning a physical property of a fibrous we, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning device for scanning a physical property of a fibrous we will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1538085