A study about the size of the sample and the supervision of production of the silk thread - Cocamar - DOI: 10.4025/actascitechnol.v25i2.2186

Abstract

The quality of the silk thread produced by Cocamar is evaluated through the following characteristics: rupture, cleaning, purity, evenness variation I, II and III, title deviation, maximum deviation, conditional title, tenacity and elongation. The objectives of this study had been: to verify if the sample and lot formation are in agreement the statistical methodology and the quality control; to verify if the machines are under control with the use of synthetic thread; and to compare the results of the analyses of the laboratory of Cocamar with the results of Japanese laboratories. We conclude that the sampling methodology and the used sample size satisfy the technical norms and the methodology of statistical control of quality. For the analysis of the synthetic thread the devices are operating under control. In relation to the visual inspection, the inspector need training and their performance must be followed.