JOHN STEPHEN PARIGI
Pilots at Sparrow Way, Beaumont, TX
License number
Texas A3809144
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
250 Sparrow Way, Beaumont, TX 77707
Professional information
Method And Apparatus For Determining The Polymer Content Of A Cellulose/Polymer Mixture And Associated Calibration
US Patent:
5619038, Apr 8, 1997
Filed:
Feb 21, 1995
Appl. No.:
8/391952
Inventors:
John S. Parigi - Beaumont TX
Fred D. Patterson - Beaumont TX
Fred D. Patterson - Beaumont TX
Assignee:
Temple-Inland Forest Products Corporation - Diboll TX
International Classification:
G01N 2135, G01N 2131
US Classification:
25033912
Abstract:
A method and apparatus for determining and adjusting the polymer content of a cellulose/polymer blend prior to use in a paper-making machine. The method for evaluating a desired polymer contained in a cellulose/polymer mixture comprising the steps of acquiring a sample for evaluation from a cellulose/polymer mixture, dewatering the sample, shredding the dewatered sample, evaluating the shredded sample over the range of absorptances which correspond to the absorption characteristics of the desired polymer, determining a specific wavelength within the range which corresponds to a location of maximum absorbence and of low sensitivity with respect to spectral shifts, comparing the specific wavelength determined with standardized wavelengths representative of known polymer percentages, and determining the polymer content by selecting the standardized wavelength which best corresponds to the specific wavelength determined. The apparatus for evaluating a desired polymer contained in a cellulose/polymer mixture comprising a sampler, a agitator, a dewaterer, a shredder, a near-infrared spectrometer, a discriminator, a comparator and a selector.