Using Control Chart to Detect Abnormal Changes in the Permeability

Abstract:

Water-vapour permeability is a critical factor of writing/ printing papers in most of practical applications; but how to monitor the manufacturing process to keep the key characteristic of the paper in control is still understudied. Therefore, in this paper, in order to monitor the water-vapour permeability of writing/ printing papers, MaxGWMA chart is first suggested due to its best effectiveness in terms of average run length performance and its high capability of detecting small shifts in the process mean and variability as well as identifying the source and the direction of an out-of-control signal. By using MaxGWMA chart, assignable causes of any out-of-control signal should be deeply examined so as to have proper corrective actions undertaken to either eliminate them from the process or reduce the variability induced by them to make the papers consistently manufactured under a stable process.

• Periodical: Advanced Materials Research (Volumes 779-780)
• Pages: 319-322
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.779-780.319
• Online since: September 2013
• Authors: Ming Hung Shu, Jui Chan Huang, Thanh Lam Nguyen, Bi Min Hsu
• Keywords: Control Chart, MaxGWMA, Permeability

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