IULTCS/Veslic Rub Fastness Tester

Introduction

In daily life, leather products, such as leather clothing, purses, leather shoes ,etc., produce friction with their own or human body and lead to color fading. This instrument is used to test the rubbing fastness of leather surface under dry friction and wet friction as well as other test conditions.

Basic principles: the square wool felt on friction head (with or without extra balance weights) makes reciprocating friction with leather (stretched or not stretched) on the friction platform for reciprocating friction. After a certain number of friction times, compare the wool felt with gray card and rate the color fastness level.

Standards

IS0 11640 Leather-Tests for colour fastness-colour fastness to cycles of to and fro rubbing

SATRA PM 173 Colour fastness to rubbing-reciprocating method

QB/T 2537 Leather-Tests for colour fastness-colour fastness to cycles of to and fro rubbing

GB/T 20991 7.3 Determination of abrasion resistance of insole

EN IS020344 7.3 Determination of abrasion resistance of insole

AS/NZS 2210.2 7.3 Determination of abrasion resistance of insole

ISO 17700 Method A To and fro square rubbing finger fastness testing Footwear-test methods for upper components and insocks-colour fastness to rubbing

DIN 4843 Safety footwear safety requirements testing

QB/T 2226 Shoelace wear test method, light industry standards.

Consumables

Friction material:

White wool felt, size 15mm × 15mm. The punched pure wool felt piece should meet the following requirements: pH of water extract between 5.5 ~ 7.0; mass per unit area (1750 ± 100) g / m2. thickness (5.5 ± 0.5) mm.

Technical Parameters

1. Test bench: a horizontal metal platform; a holder for fastening the leather to the platform, leaving approximately 80mm exposed; a device with which the leather may be extended 10% to 20% linearly in the direction of rubbing (sample size 120mm × 20mm).

2. Test column:  weight (500 ± 25) g. It can be moved, but also firmly fixed. including:

A) Test head area: 15mm × 15mm.

B) Device for adjusting the test head to bring the felt pad into horizontal contact with the test platform.

C) Load bearing blocks: (500 ± 10) g. After loading, the total mass of the test column is 1000g.

D) Adjustment device: adjust the test column up and down so that the test head makes horizontal contact with sample.

3. Device that drives test bench for reciprocating motion: test head makes  forward-backward  motion with a stroke of 35mm ~ 40mm at a frequency of  (40 ± 2) cycles / min.

4. Counter: LCD digital display, round-trip as one time, the number of cycles can be set to 5 to 500 times.

5. Device that can adjust the test column in the horizontal direction (optional): the test head can be rubbed against the leather samples at 2 to 3 different angles.

YouTube video introduction:https://www.youtube.com/watch?v=4NY5zuHI_5k&t=14s

Conclusion

The Taber Shear / Scratch Tester delivers accurate, standardized assessment of scratch, mar, and shear resistance for automotive interior materials and coatings. Its versatile design, automated control, and compliance with multiple standards make it essential for R&D, production quality control, and product durability testing.

FAQ

(1) What is this product?

It is a scratch and mar tester for automotive interior materials, coatings, plastics, leather, and fabrics.

(2) What is this product used for?

It measures scratch, mar, and shear resistance to evaluate material surface durability.

(3) How does this product work?

A scraper moves linearly under a specified load across the sample while the turntable rotates; the surface resistance is observed and recorded.

(4) Why is this product important?

It provides reliable, repeatable data on material durability and adhesion, supporting R&D and quality control.

(5) Which industries is this product suitable for?

Automotive interior production, plastics and coatings, textile and leather manufacturing, and material testing laboratories.