Fabric Properties of Blends of New and Reprocessed Wool
1941
Bailey, Barbara
Physical and chemical effects of blending new and reprocessed wool have been investigated before and after varying numbers of commercial dry cleanings and pressings. Differences in fundamental fabric properties were found for the four blends of wool used, although identical manufacturing and finishing processes were employed. Ash content tended to increase with dry cleaning, sulfur was not appreciably affected, and the nitrogen content showed a marked increase between, the fifteenth and thirtieth dry cleanings. Applications of statistical methods to the tests of strength and elongation showed in general that blending the sources of new and reprocessed wool used in this study resulted in decreases in fabric strength and elongation as the percentages of reprocessed wool were increased, and these differences persisted through forty- five dry cleanings and pressings. The effects of dry cleaning and pressing were mixed and nominal in magnitude.
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