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VASLIC RUB FASTNESS TESTER

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Technical Overview

✔ Test Principle:

  • A wool felt rubbing pad (dry or wet) repeatedly rubs the sample surface under a specified pressure and stroke.

  • After a set number of cycles, color transfer and surface changes are assessed visually, typically using a grey scale for staining and color change.

✔ Typical Specifications

  • Rubbing Head Area: ~15 mm Ă— 15 mm

  • Rubbing Speed: ~40 ± 2 cycles per minute

  • Rubbing Stroke: ~35–40 mm

  • Weight (Pressure): ~500 g finger + optional 500 g additional weight (total ~1000 g)

  • Sample Size: ~120 Ă— 20 mm

  • Sample Tension Range: ~0–20 %

  • Power Supply: ~AC 220 V 50/60 Hz

  • Automatic Cycle Counter: Digital or mechanical with automatic stop upon reaching preset cycles

✔ Testing Conditions:

  • Dry rubbing

  • Wet rubbing (sample and/or felt soaked as per standard procedures)

✔ Compliance Standards:
Common standards this tester supports:

  • ISO 11640 – Colour fastness to rubbing (leather)

  • DIN 4843 – Leather colour fastness

  • SATRA TM173 / TM177 – Rubbing fastness methods

  • EN ISO 20344:7.3 – Footwear upper and lining tests

  • ISO 17700 Method A – Footwear material colour fastness