Method for sensing stickies

Details Method for sensing stickies Method for sensing stickies

2005-01-11

2005-01-11

Alexander, Lyle A. (Department: 1743)

Chemistry: analytical and immunological testing

Carbon containing

In an aqueous solution

C436S052000, C436S166000, C162S004000, C162S049000

Reexamination Certificate

active

06841390

ABSTRACT:
A real-time system and method for measuring stickies by separating high molecular weight non-fibrous species from low molecular weight non-fibrous species and sensing the concentration of the high molecular weight species. Specifically, a fiber slurry containing stickies is filtered to remove fibers, fiber debris, and other large contaminant particles from the fiber slurry, after which the carbon content of the filtered sample is measured. Next, the filtrate is ultrafiltered to separate stickies having a high molecular weight from the filtrate, and subsequently, the carbon content of the ultrafiltered sample is measured. Finally, the carbon contents are used to determine the microstickies concentration in the fiber slurry.

REFERENCES:
patent: 4758308 (1988-07-01), Carr
patent: 6589427 (2003-07-01), Moghe et al.
Ortner et al., Process Technological Solutions for the Separation of Sticky Impurities, Tappi Press, 1983 book 3, pp. 695-701.*
Doshi et al., Detection and Quantification of Sticky Contaminants in Recycled Fiber Systems, Tappi Press, 1983 book 2, pp. 703-707.*
Krueger et al., Removing ‘Stickies’from Recycled Fiber, Tappi Press, 1981 vol. 64 No. 7, pp. 39-41.

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