Abstract: A procedure for measuring the components of the coating of paper via infrared measurement, the paper components being determined via a reflection measurement in the middle infrared range, e.g. by measuring the reflection peak using a wavelength of 2-12 .mu.m.
Type:
Grant
Filed:
August 11, 1997
Date of Patent:
June 22, 1999
Assignee:
Valmet Automatic, Inc.
Inventors:
Juha Antero Sumen, Jouni Sakari Tornberg