Catalogue of Services

Trevira Textile Testing Methods

Our tests cover the entire textile value chain, starting from the staple fibre, via yarns and textile fabrics of all kinds, right up to the finished product.

From simple tensile strength tests to failure analyses using a scanning electron microscope, our laboratory team is there to help you at every step of the way. Based on the test areas set out below, we work with you to establish an appropriate testing plan to answer any questions you may have about your new developments, the utility value of your products, potential failure analyses and product quality.

Are you looking for analyses or tests in relation to a non-textile product? If so, please don't hesitate to get in touch with us, as we offer a range of testing services for non-textiles too.

Our methods at a glance

Fibres

Automated testing (Favimat)
Combined test method for:
Linear density
Tensile properties
Crimp properties

Linear density
Gravimetric method
Vibroscope method (Vibromat)
Freudenberg method (measuring microscope for fibre length < 32 mm)

Thermo-mechanical test methods
Shrinkage (boiling water / hot air)
- long fibres (>50 mm)
- short fibres (<50 mm)
- high-shrinking fibres (>50%)

Shrinkage diagram at increasing temperature
Shrinkage force diagram at increasing temperature

Tensile tests
tensile tests at single fibres (incl. linear density)

Crimp properties
Crimp/cm
Crimp elongation
Crimp stability

Other tests
Fibre length measuring of individual fibres (Elektrometer)
Bending- abrasion test (Fibre Stress Tester)
Electrical resistance
Colour measurement

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)

Fabrics

General
Width and length of woven fabric
Weave analysis
Thickness
Threads/unit length
Mass per square metre

Tensile tests
Tensile test; strip method
Seam slippage resistance (fixed seam opening method)
Seam slippage resistance (fixed load method)
Separation test on fabric plies bonded together
Thermal stability
Tear resistance, ‘wing-shaped method’
Tear resistance, ‘trouser-shaped method’
Tear resistance, trapezoid method

Wear behaviour tests
wrinkle recovery test
‘Elbow test’
Rain-shower test (Bundesmann)
Fogging characteristics (gravimetric)
Surface structure analysis on pile fabric, spray test
Elasticity of fabrics at constant load “Heberlein method”
Crease recovery angle after horizontal folding
Air permeability
Pilling test, Martindale mod.
Pilling test, RTPT
Pilling test, Pillbox
Abrasion test (Martindale)
Abrasion test (MIE)
Snagging tendency (ICI snagging box)
Snagging tendency (Mace snag test)
Wicking test
Water repellency test (spray method)
Oil repellency test

Thermo-mechanical tests
Length alteration at constant heating rate (Thermofil)
Shrinkage force at constant heating rate (Thermofil)

Other tests
foil imprint of the fabric structure
Conductivity measurement (resistance), ring electrode
Conductivity measurement (resistance), strip electrode
Colour measurement
Stiffness test
3-point bending test (stiffness test)
Compressibility (force) at composites, bobbins ect.
Static puncture test/Penetration stability (nonwovens)

Microscopic analyzes

Depending on requirements, the analysis may be carried out with a light-optical microscope, a digital microscope, a scanning electron microscope (SEM) or specific microscopes, e.g. Microscope equipped with a heating table.

Thickness measurements
Optical diameter
Optical measurement of fibre length (especially for short fibres)
Linear density (optical determination)
Detection of stains
Photography/image processing
Analysis of Yarn characteristic an structure
Core/sheath ratio of bicomponent fibers
Shrinkage at short fibers, optical determination
Macro/microscopic photography
Microtome cross-section
Particle analysis
Profile dimensions
SEM analysis
EDX analysis (detection of chemical elements), incl. mapping
Optical damage analyses
Melting point characteristics
Transparency
Dye penetration analysis

Tests for colour fastness / washing tests

Colour fastness tests to
Light (DIN EN 105-B02, 105-B06)
Artificial weathering (DIN EN ISO 105-B04, 105-B10)
Ironing
Sea water fastness
Rubbing, dry and wet
Perspiration
Sublimation
Washing
Water
Dry heat

Washing tests
Domestic washing and drying (DIN EN ISO 6330)
Dimensional stability after washing
 

 

Did you find the test you were looking for?
If not please get in touch with us and we will do our best to find a solution that meets your needs.

Your contact

I will be glad to help you.

Margot Sprenger

Teamleader Textile Testing

Indorama Ventures Fibers Germany GmbH

Max-Fischer-Straße 11

86399 Bobingen

Deutschland