Yarns
Yarn construction
Linear density skein method
Linear density – single strands method
Number of single filaments
Twist
Number of Entanglements (interlaces)
Diameter - monofilaments
Colour measurement
Yarn behaviour
Abrasiveness - filament yarns
Abrasion - spun yarns (fiber abrasion)
Bending test - monofilaments
Snarling tendency
Friction coefficient (solid material/yarn or yarn/yarn)
Stick-slip test
Electrical resistance – method for strips of textile fabrics
Unevenness – filament yarns (Uster)
Unevenness, incl. hairiness and imperfections at spun yarns (Uster)
Stiffness test - monofilaments
Draw ratio, dynamic (room temperature or heat)
Visual inspection of spun yarn imperfections (Toennissen yarn panel)
Thermo-mechanical tests
Shrinkage (boiling water or hot air)
Hot air shrinkage under load (Testrite)
Change in length at increasing temperature, static
Shrinkage force at constant temperature
Shrinkage force diagram at increasing temperature, static
Shrinkage force diagram at constant temperature, dynamic
Tensile tests (room temperature or heat/cold)
Tensile test, automatically (Statimat)
Tensile test, manually (Zwick – universal testing machine)
Elastic behaviour test, single strain
Elastic behaviour test, repeated strain (hysteresis)
Knot tensile test
Loop tensile test
Stability tests (tensile tests before/after exposure to chemical or thermo-mechanical loads)
Crimp tests
Crimp shrinkage at increasing temperature
Crimp of textured filament yarns (Texturmat)
Other tests
Drain-off behaviour (Dynafil M)
Detection of thick places, broken filaments or loops (Elkometer)
Bobbin analysis (dimensions, size and weight)
Package hardness at spools (Shore)