THE REGULARITY OF DIFFERENTLY MERCERISED DOUBLED YARNS AND AN IMPROVED PHOTOMETRIC METHOD OF MEASURING THEIR LUSTRE. APPLICATIONS OF THE PHOTOMETRIC METHOD TO FABRICS
- 1 January 1925
- journal article
- research article
- Published by Taylor & Francis in Journal of the Textile Institute Transactions
- Vol. 16 (6) , T167-T184
- https://doi.org/10.1080/19447022508661338
Abstract
The present research extends the previous work on the lustre of doubled yarns2 to 2/140's counts and details the degree of lustre imparted by different mercerisation processes and the effect of such processes on the supposed regularisation of doubling twist. The photometric methods are improved and highly accurate, the yarn being examined in the form of pads illuminated by light whose angle of incidence varies from 0° to 60°. It will be obvious, since such pads consist of “entirely floating” threads, that the method is one capable of very extended application. For example, the lustre of raw cottons and slivers (in the form of pads of parallel hairs), single and double yarns of varying twists (whether plain, gassed or mercerised), and fabrics of different weaves (whether grey, mercerised, schreinered, calendered, and so forth) can be readily examined. Much work has already been completed in this direction and a brief account of its scope is given in Part II. of this paper. It is shown that—Keywords
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