Process for tire manufacture with on-line determining of carbon

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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1561101, 156123, B29D 3000

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active

057025509

ABSTRACT:
To determine the carbon black distribution two measurements of spectral intensities of separately produced plasmas are carried out with different time delays relative to a particular laser pulse, the time delay for the second measurement for determining the spectral line intensities of a reference element carbon (I.sub.C') and at least one analysis element (I.sub.A.n') being smaller than for the first measurement; for determining the spectral line intensities of the reference element (I.sub.C) and the other analysis elements (I.sub.A.n).
Evaluation of the measurements is performed by reference to calibration information based on reference measurements, which information shows the magnitude of the concentration ratio of the other analysis elements or the at least one analysis element to the reference element (c.sub.A.n /c.sub.C or c.sub.A.n /c.sub.R) as a function of the appurtenant intensity ratio values. By comparison between the intensity ratio values from both measurements with the calibration information, using the concentration of total carbon (c.sub.C) and that of the selected analysis element (c.sub.A.n), the magnitude of the carbon black concentration (c.sub.R) is determined.

REFERENCES:
patent: 4076220 (1978-02-01), Nakashima et al.
patent: 4301411 (1981-11-01), Wardell et al.
patent: 4641968 (1987-02-01), Grandy
English language abstract for DE 4004627, Derwent Information Ltd, Feb. 1991.
Time-Resolved Laser-Induced Breakdown Spectroscopy of Iron Ore; K. J. Grant, G.L. Paul, and J. A. O'Neill; 1369 Applied Spectroscopy 44 (1990) December , No. 10, Frederick, MD, US.
Materials analysis using laser-based spectrscopic techniques' B.J. Goddard, BSc,PhD, 2190a Transactions of the Institute of Measurement and Control; 13 (1991) No. 3 London, GB.

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