Textiles: spinning – twisting – and twining – Apparatus and processes – Web material
Patent
1974-10-07
1976-07-27
Watkins, Donald E.
Textiles: spinning, twisting, and twining
Apparatus and processes
Web material
57157TS, D02G 104, D01H 1328
Patent
active
039712001
ABSTRACT:
The instant invention relates to a continuous process for the manufacture of heat set yarns. The process comprises firstly passing a two or more ply twisted filament or spun yarns having a latent bulk in the single ends into a first heating zone to develop the latent bulk, passing the yarn into a second heating zone where the yarn is heated to a temperature higher than it was heated in the first zone, and then passing the yarn into a cooling zone while imposing a false twist which runs back into its second heating zone. The second heating zone and the cooling zone serve to set the bulk and the twist and to increase the torque of the yarn. The yarn is then fed to a take-up and wound into a package.
REFERENCES:
patent: 2956393 (1960-10-01), Ubbelohde
patent: 3270492 (1966-09-01), Fitton et al.
patent: 3438190 (1969-04-01), Collingwood
patent: 3702055 (1972-11-01), Kosaka
patent: 3724191 (1973-04-01), Hooper
patent: 3729916 (1973-05-01), Lusk et al.
patent: 3774383 (1973-11-01), Stemmer
patent: 3796036 (1974-03-01), Parker
patent: 3813863 (1974-06-01), Ritter
patent: 3903682 (1975-09-01), Crouzet et al.
Leesona Corporation
Norton Burnett W.
Watkins Donald E.
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