The Japanese Standard Color Fastness to Rub Tester (Gakushin) is a specialized instrument designed to evaluate the colorfastness of textiles to friction and abrasion, adhering to JIS L 0849 (Japanese Industrial Standard). It quantifies color transfer and staining resistance under controlled rubbing conditions, critical for ensuring compliance with Japanese textile quality requirements.

Applications

Textile Manufacturing: Testing dyed fabrics for consumer goods

Quality Control: Batch inspection of apparel and home textiles

R&D: Developing fade-resistant dyes and finishes

Forensic Analysis: Evaluating wear-induced color degradation

Standard Operation Workflow:

Sample Preparation: Cut to size, clamp in test frame

Parameter Setup: Select cycle count and rubbing force

Testing: Initiate automated rubbing cycles

Analysis: Measure color transfer via spectrophotometer

Cleaning: Automated pad decontamination

Safety Precautions:

Avoid contact with moving parts during operation

Use heat-resistant gloves when handling samples

Maintain ventilation in testing area

* JIS-certified felt pads and calibration weights * NIST-traceable colorimeter * Energy-efficient low-power motor * Includes 5-year mechanical warranty * Compact design for lab/bench use**Technical Highlights**- ±0.5 ΔE color measurement accuracy (JIS-compliant) – 10.000-cycle fatigue testing mode – Real-time digital staining grading software – Motorized load adjustment (500g precision) – CE/IECEx certified for safe operation

Standards

JIS L 0849 :Colorfastness to rubbing

ISO 105-X12 :International colorfastness test

AATCC 8:Durability of colorfastness

GB/T 3920 :Chinese textile abrasion standard

Features

JIS L 0849 Compliance:

Simulates real-world friction (e.g., garment rubbing)

Standardized felt pad and load system

Advanced Features:

Real-time color difference analysis (ΔE)

AI-based staining classification (5 severity levels)

Anti-slip clamping mechanism

Automation:

Programmable cycle counter

Motorized rubbing head

Self-cleaning abrasive pad holder

Technical Parameters

Accessoriess

1. Flat test platform;

2. Transparent resin safety cover for high safety;

3. 1.5 R friction head (radius of curvature 1.5mm);

4. Sharp-angled friction head (for testing flocked products);

5. Load weights (300g, 500g, 800g);

6. Fixing device for thick test fabrics (maximum thickness 8mm);

7. Flat friction head (20×20mm, for testing printing inks and coatings).

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