VASLIC RUB FASTNESS TESTER

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 × 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 × 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