Details:
Year: 2001
Pages: 23
Summary:
Fluting is a ubiquitous problem of the web offset printing process. Flutes, or corrugations, are seen as ridges, running parallel to the web direction, that have a characteristic wavelength of from 15 to 30 millimeters. They are found only in regions of heavy ink coverage. The concept that these are due to differential shrinkage in the cross-direction (CD) of the web is explored and coating variables examined to determine their influence on the wavelength and amplitude of the flutes.