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http://nopr.niscpr.res.in/handle/123456789/33302| Title: | Improvements in Yarn Quality and Ringframe Performance in Fine Counts by Higher Licker-in and Cylinder Speeds in Carding |
| Authors: | Shah, R S Balasubramanian, N |
| Issue Date: | Dec-1979 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | An attempt has been made to assess the improvement in carding quality in semi-high production cards resulting from increase in licker-in up to 800 rpm and cylinder speeds up to 300 rpm, the study being restricted to fine counts. The material was examined up to ring spinning to assess the effect on end breakage rate also. Increase in licker-in speed was found to improve the cleaning efficiency significantly in all the four mixings studied. There was no evidence of fibre rupture, or any increase in nep generation at the higher speed. On the other hand, there was clear evidence to show that increase in licker-in speed helped to remove the immature fibre clusters and fuzzy fibres more effectively. Although the physical properties of the yarn were nearly unaffected, a significant reduction in ringframe end breakage rate could be obtained at higher licker-in speed. Increase in cylinder speed was associated with reduced cylinder load, but without change in transfer efficiency. There was a consistent improvement in card cleaning efficiency with increase in speed for all the mixings. Although yarn strength and evenness were not much affected, the yarn imperfections showed consistent reduction at higher cylinder speed with three out of four mixings. Ringframe end breaks also showed a significant reduction at the higher cylinder speed with all the mixings, except 70s. |
| Page(s): | 140-144 |
| ISSN: | 0975-1025 (Online); 0971-0426 (Print) |
| Appears in Collections: | IJFTR Vol.04(4) [December 1979] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJFTR 4(4) 140-144.pdf | 1.2 MB | Adobe PDF | View/Open |
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