Author:Gaigher, JLDate:1976The mineral matter factors for some coal product samples determined by the method of radio--frequency oxidation, compared with results from an earlier survey (Technical Memorandum No021 of 1971), appear to have an acceptable precision.Read more
Author:Hunter, L; Gee, EDate:Dec 1976The between-bale and between lot variations in the bundle tenacity and bundle extension have been determined on a Stelometer for a wide range of cottons grown in South African.Read more
Author:Hunter, LDate:Aug 1976The between-bale and between variations in micronaire, maturity ratio, 2,5 per cent span length, uniformity ratio and trash content have been determined for a wide range of cottons grown in South Africa.Read more
Author:Hunter, LDate:Jul 1973The effect of wetting wool worsted yarns prior to testing on the twist values obtained by the double untwist-twist and untwist-retwist on tested on an automatic twist tester has been investigated.Read more
Author:Du Plessis, M; Van Rensburg, NJJDate:Sep 1977Cotton fabric treated with aminoplast resins can be cured in an autoclave steamer, provided that the samples are sealed in aluminium foil or cooking bags.Read more
Author:Maasdorp, APBDate:Nov 1983A simple diffusion equation has been successfully used to monitor the initial fast absorption of chromium by both dyed and undyed wool.Read more
Author:Roberts, MBDate:Feb 1978In the chrome dying of wool by the afterchrome process, a saving of time has been achieved during the dyeing phase by commencing the dyeing at a higher temperature than normal and controlling exhaustion by means of a steady reduction in pH.Read more
Author:Hunter, LDate:Jul 1978The response to Part 1 of this series has been so good that it was considered worthwhile to extend the work to cover a wider field.Read more
Author:Hunter, LDate:Apr 1975In textiles, as in other disciplines, technical and scientific information is increasing at a tremendous pace and the number of scientific and technical articles published is also growing at an ever increasing rate.Read more
Author:Hunter, L; Cawood, MPDate:Sep 1979On 1 April 1979, SAWTRI launched a Clothing and Making-up Technology Department and it was therefore considered a worthwhile exercise to compile scientific and technical data and information related to this field since tremendous strides have ...Read more
Author:Hunter, LDate:Jul 1978This publication, the third in the series, mainly deals with special fibres which have certain high performance properties such as low flammability and high mechanical performance.Read more
Author:Weideman, E; Van Rensburg, NJJDate:Nov 1976A brief review of the theory and literature on interfacial phenomena is given. A statistical analysis of published data has shown that the value obtained for Y (the surface free energy or surface tension of a solid), is dependent on the values ...Read more
Author:Weideman, EDate:Sep 1976The liquid diiodomethane has been used extensively for measuring contact angles on solids, and he values obtained are used for the calculation of the surface free energy of the solids.Read more
Author:Turpie, DWFDate:Mar 1988The effects of a mild (partial) carbonising treatment on the characteristics of card slivers and slubbings produced on the woollen system of manufacture from various lambs wool lots are reported.Read more
Author:Turpie, DWFDate:Sep 1987The necessity of totally effective carbonising of raw wool and mohair is questioned, and an alternative treatment, employing milder, less effective carbonising conditions supplemented by traditional unsophisticated carding (and perhaps combing) ...Read more
Author:Thierron, WDate:May 1985Polyester/wool yarns were spun successfully on a Dref III friction spinning machine and a ring spinning machine. The Dref II machine provided considerably higher production rates than the ring spinning machine and also involved fewer processing ...Read more
Author:Thierron, W; Hunter, LDate:Sep 1983Cotton/polyester yarns were spun on a DREF III spinning machine and their properties compared with those of the corresponding yarns spun on ring and rotor machines.Read more
Author:Strydom, MADate:May 1980Five lots of sorted karakul, varying in seed content and mean fibre length, were processed into worsted tops and the raw fibre properties and processing performance recorded.Read more