Surface Tester

The KES-FB4-A Surface Tester analyzes hand movements—particularly, strokes—performed by artisans and professionals when judging a fabric’s texture. This device performs this movement mechanically, making it possible to obtain objective numerical data.

Obtainable data includes frictional coefficients, fluctuations of frictional coefficients, and surface roughness for such targets as general fabric, cloth, paper, non-woven fabric, and film-like samples. Surface friction and roughness characteristic data is useful for determining fullness and softness, smoothness, crispness.

● Sensor that imitates fingertips

  • The sensor unit’s design features a load and surface treatment that mimics a fingertip, allowing for quantification similar to that of the human fingertip.

Measurement Sample Example

  • General fabric
  • Fabric
  • Medicinal fabric
  • Car seats
  • Interior fabric
  • Non-woven fabric
  • Film-like samples

FB4-A _ Friction/Roughness

Close-up view of measuring unit

Surface Tester
System Configuration Diagram / Measurement Data
※Compressor is attached to the below components

Sample Measurement Software Screens

▲Surface properties

Obtainable Data

Item Characteristic value Description Reading the data
MIU Mean frictional coefficient Higher values mean less tendency to slip
MMD Fluctuation of mean frictional coefficient Higher values mean less smoothness and more roughness
SMD Surface roughness Higher values mean more surface unevenness
  • Auto Data Processing Unit (optional)

    Connecting this device to the instrument and to a PC allows the waveforms and numerical values of measurement data to be output. Obtained data can be saved as BIN data or CSV data.

KES (Kawabata Evaluation) SYSTEM

The Kawabata Evaluation System, centered on Sueo Kawabata, a professor at Kyoto University, and Masako Niwa, a professor at Nara Women’s University, is an objective evaluation method for measuring the texture of clothing fabrics based on the “The Standardization and Analysis of Hand Evaluation” provided by the Hand Evaluation and Standardization Committee of the Textile Machinery Society of Japan.

Surface Tester
Dimensions/Weight (approx.)
  • Measuring unit: W550 × D520 × H420 (mm) / 50 kg
  • Electronic unit: W180 × D400 × H400 (mm) / 10 kg
Power source 100 VAC, power consumption: 50W Max. for the main device, 300W Max. for compressor.
Measurement environment temperature and humidity 20 to 30°C / 50 to 70% RH
(No condensation.) Temperature and humidity kept constant during measurement.
(Standard temperature and humidity conditions: 20°C / 65% RH)
*Installation should be in a location with minimal influence from wind or vibrations.
Surface friction detection Detector: Ring-type detector with differential transformer
Load (full scale): 200 gf (with standard measurement)
Accuracy: ±0.5% or less of full scale
Surface roughness detection Detector: Differential transformer
Displacement (full scale): 0.4 mm
Accuracy: ±1.0% or less of full scale
Detection of surface measurement movement Detector: Potentiometer
Travel distance: 30 mm (Range of effective measurement distance: 20 mm)
Accuracy: ±0.5% or less of full scale
Filter properties Active secondary filter: μ = 0.6, ω0 = 1 cps
Sensor size Friction contactor: 10 mm × 10 mm
Roughness contactor: 0.5 mm using wire (contact surface width: 5 mm)
Velocity of Sample Movement 1 mm/sec (standard)
Specimen size Dimensions: 20 cm × 20 cm (standard), Thickness: 2 mm (max.)
*Specification details recorded here are subject to change without notice. We appreciate your understanding.
Surface Tester
Apparel industry
Automotive industry
Paper and non-woven fabric manufacturers, etc.

Page top