Sensor and system for continuous determination of paper strength

Details Sensor and system for continuous determination of paper strength Sensor and system for continuous determination of paper strength

1988-05-13

1989-09-19

Levy, Stewart J.

Measuring and testing

Sheet, woven fabric or fiber

G01L 504

Patent

active

048669849

ABSTRACT:
A sensor for continuous sensing of a quantity of paper related to its elastic modulus and stiffness including a paper support in the form of a segmented ring, and a free running wheel which depresses the paper in the center of the ring as the paper passes over it. Force transducers mounted to sense force exerted on the segments provides a measure of a characteristic of the paper related to its elastic modulus and bending stiffness. The segments are aligned so that separate determinations of machine direction and cross-direction characteristics are made. The outputs of this sensor, together with basis weight, thickness and paper velocity are used to determine the strength of the paper on a continuous basis. Separate values of machine direction and cross-direction strength can be determined, as can a burst pressure strength.

REFERENCES:
patent: 2674127 (1954-04-01), Garrett et al.
patent: 2809519 (1957-10-01), Kaestner
patent: 2826911 (1958-03-01), Hartford et al.
patent: 2909660 (1959-10-01), Alexander
patent: 2966792 (1961-01-01), Ciro de Pieri
patent: 3204454 (1965-09-01), Friman et al.
patent: 3474668 (1969-10-01), Mangan
patent: 3552203 (1971-01-01), Freeh
patent: 3619360 (1971-11-01), Persik
patent: 3622448 (1968-02-01), Adams et al.
patent: 3711688 (1973-01-01), Stout et al.
patent: 3718037 (1973-02-01), Stringer et al.
patent: 3738151 (1973-06-01), Giunta et al.
patent: 3757122 (1973-09-01), Bossen et al.
patent: 3793878 (1974-02-01), Brunton
patent: 3822588 (1974-07-01), Knight et al.
patent: 4068385 (1978-01-01), Mitzel
patent: 4080656 (1978-03-01), Johnsson et al.
patent: 4291577 (1981-09-01), Baum et al.
patent: 4374703 (1983-02-01), Lebeau et al.
patent: 4453404 (1984-06-01), Powell et al.
patent: 4587855 (1986-05-01), Yamada et al.
patent: 4674310 (1987-06-01), Ginzberg
patent: 4678915 (1987-07-01), Dahlquist et al.
A High Temperature Four-Point Bending Machine for Testing Thin Sheets of Refractory Materials, J. L. Martin, R. Case, A. Devacht and P. Costa, Office National D'Etudes et de Recherches Aerospatiales, 12/29/70.
Foxborough Bulletin, Aug. 1964.
Check-Line Type DTM Microprocessor-Controlled Tensiometer Brochure, (no date available).
"On-Line Measurement of Strength of a Moving Sheet", M. T. Lu, TAPPI, vol. 58, No. 6, pp. 80-81, Jun. 1975.
"Control in the Paper Industry Industry up to the Minute", E. J. Kompass, Control Engineering, vol. 25, No. 12, pp. 44-46, Dec. 1978.

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