Measuring and testing – Coating material: ink adhesive and/or plastic
Patent
1993-04-29
1994-07-05
Williams, Hezron E.
Measuring and testing
Coating material: ink adhesive and/or plastic
G01N 3334, G01B 1700
Patent
active
053257138
ABSTRACT:
Described is apparatus and a method for measuring the integrity of coated paper, which apparatus comprises, a reservoir for a test liquid, e.g., water, retaining means for holding a sample of coated paper which is in liquid communication with the test liquid reservoir, means for applying ultrasonic energy to the sample of coated paper, photoelectric means for continuously measuring the turbidity of the test liquid, the photoelectric means being in liquid communication with the test liquid reservoir and the paper sample, recording means electrically connected to the photoelectric means for continuously recording the turbidity measurements, and means, including pumping means, for circulating test liquid between the reservoir, photoelectric means and paper sample retaining device.
REFERENCES:
patent: 2734375 (1956-02-01), Galbraith et al.
patent: 3040559 (1962-06-01), Adams
patent: 3063285 (1962-11-01), Jensen et al.
patent: 3129586 (1964-04-01), Allen et al.
patent: 3788137 (1974-01-01), Lyon et al.
"TAPPI Control Methods", RC-183, RD-185, Jan. 1953, Technical Association of the Pulp and Paper Industry.
Dilmore Robert O.
Furst Kenneth L.
Janic Milan D.
Stipanovic Bozidar
Brock Michael
PPG Industries Inc.
Stein Irwin M.
Williams Hezron E.
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