| Title |
The dependence of air-textured PES thread mechanical properties on texturing parameters |
| Another Title |
Oru tekstūruotų PES siūlų mechaninių savybių priklausomumas nuo tekstūravimo parametrų. |
| Authors |
Zauraitė, Justina ; Vitkauskas, Arvydas Juozas ; Jonaitienė, Vaida |
| Full Text |
|
| Is Part of |
Materials science = Medžiagotyra.. Kaunas : Technologija. 2007, vol. 13, no. 4, p. 333-336.. ISSN 1392-1320. eISSN 2029-7289 |
| Keywords [eng] |
air-jet texturing ; sewing yarns ; polyester ; stress-strain ; relaxation ; recovery |
| Abstract [eng] |
Stress-strain properties including loop strength, stress relaxation and elastic recovery of air-textured PES/PES corewrap sewing threads manufactured on “Eltex” air-texturing machine with HemaJet® air-texturing nozzle are investigated. Torlen FY HT PES 13.3 tex multifilament yarn distinguished by increased strength was used as raw material. Two PES yarns were fed to the nozzle as core threads and one as wrap effect. The properties of threads manufactured alternatively with thermosetting and without it are studied in dependence on overfeed of wrap yarn and pressure of air fed into the texturing nozzle. ZWICK/ROELL BDO-FBO.5TH testing machine with a 50 N load cell was used performing the tests. Mechanical properties of the PES multifilament yarns are markedly changed by air-texturing. Breaking tenacities of PES/PES airtextured sewing threads are only one half of those of the raw PES yarn due to core-wrap structure of the air-textured threads and the disordering of filaments of core threads during air-texturing. PES/PES threads are pretty less responsive to loop testing if comparing with straight thread test than the raw PES yarn. Air-pressure and overfeed in texturing are influential factors in respect of stress-strain properties and loop strength of air-textured PES/PES sewing threads. Their influence is markedly affected by thread thermosetting: lower air pressure and overfeed values are advantageous factors while texturing without thermosetting but they are disadvantageous ones while texturing with thermosetting. The thermosetting of threads does not markedly influences relaxation behaviour of air-textured PES/PES threads, but the thermoset threads show to have more stable elastic power at higher strains. |
| Published |
Kaunas : Technologija |
| Type |
Journal article |
| Language |
English |
| Publication date |
2007 |
| CC license |
|
