Abrasion
Yarn wear against a standard wire.
LAWSON HEMPHILL GmbH
Find your test method
27 test and application families. Select a relevant instrument to explore its configuration.
Appearance
Camera-based yarn profile and appearance analysis.
Broken filament
Optical detection of protruding or broken filaments with the appropriate module.
Bulk / crimp contraction
Dynamic contraction behaviour of textured yarns.
Crimp
Evaluate crimp properties in textured yarn.
Crystallinity
Sonic measurements support structural characterisation; this is not a direct crystallinity-percentage measurement.
Draw force
Measure the force required to draw partially oriented yarn.
Draw ratio
Control the speed ratio for drawing and elastomeric yarn testing.
Elongation
Measure extension under dynamic or tensile-test conditions.
Entanglement
Count entanglements and assess their distribution or resistance to opening.
Evenness
Assess diameter variation and thick and thin places optically.
Friction
Yarn-to-pin and yarn-to-yarn friction measurements.
Hairiness
Camera-based evaluation of protruding fibres.
Interlace
Analyse interlaced filament bundles and open sections.
Knitting
Produce controlled knitted samples for yarn and dyeability assessment.
Lint generation
Collect and measure fibres released during dynamic yarn testing.
Modulus
Investigate stiffness using sonic or tensile methods.
Neps
Classify local diameter defects using the camera analysis module.
Orientation
Use sonic velocity to investigate orientation in fibres and sheet materials.
Shrinkage
Evaluate dimensional changes under defined thermal and tension conditions.
Shrinkage force
Measure force developed during thermal shrinkage.
Sonic modulus
Derive elastic-property information from sonic pulse velocity.
Tension
Measure yarn tension in the laboratory or production process.
Tensile
Determine force and extension characteristics of yarns and textiles.
Unwinding tension
Assess tension as yarn leaves the package.
Weak spot
Continuously test yarn for weak sections under dynamic tension.
Yarn feeder
Controlled feeding and automated package changes for repeatable tests.