1. Dušan Trajković, Univerzitet u Nišu, Tehnološki fakultet u Leskovcu, Serbia
2. Jovan Stepanović, Univerzitet u Nišu, Tehnološki fakultet u Leskovcu, Serbia
3. Petar Stojanović, Dunav a.d. Grocka, Serbia
4. Nenad Ćirković, Univerzitet u Nišu, Tehnološki fakultet u Leskovcu, Serbia
There exist essential differences between the mechanical models of twisting ring spun and OE-rotor spun yarns, and the internal structure of these two yarn types.
The twisting of single thread ring spun yarns is determined by standardized methods (the untwisting method, the spanning and differential methods) that give good results. However, due to the specific structure of the OE-rotor yarn these methods, although used in laboratories, do not give reliable results, showing, as a rule, slightly lower twisting values than the real (nominal) one. Therefore, the reference data recommend modified spanning method, the so called Schütz-Queny method.
In this work, compared are the test results of twisting of OE-rotor spun yarns with known “nominal” and “machine” twisting values obtained by use of well known standard procedures and by modified procedures. The test results and the correlative analysis indicate a higher objectivity of the modified procedure.
Key words :
Thematic field:
Tekstilne tehnologije
Date:
25.07.2016.
XI Savjetovanje hemičara, tehnologa i ekologa Republike Srpske
Paper file
Paper file