Why is colorfastness so important? Image this: A consumer picks out a sports jacket specifically for outdoor activities, only to discover that after the first wash, the color has dulled —and even worse, bled onto other garments, rendering them unwearable. Such an outcome not only ruins the appearance of the clothing but also leaves customers dissatisfied, inevitably leading to complaints and reducing brand loyalty. Let me show you how Hwafune’s fabrics excel in rigorous wash colorfastness testing—and why partnering with us can help you reach your business goals.

1️⃣ Prepare Equipment and Preheat the Tester

Select washing fastness test cylinders that withstand temperature changes and mechanical agitation. Calibrate the tester to the required temperature for precise and reliable results.

2️⃣ Place Test and Control Fabrics

place the test fabric and white nylon fabric into the test cylinder. White nylon, chosen for its high dyeability, highlights HwaFune's rigorous testing process and confidence in fabric quality.

3️⃣ Add Steel Balls and Detergent

Add 10 steel balls to simulate washing friction, creating a realistic test environment. Measure and add 150 mL of ISO 105-C-compliant detergent solution to each test cylinder for standardized, reproducible results.

4️⃣ Tighten and Test at 40°C for 30 Minutes

Securely tighten the test cylinder lid to prevent leaks. Place the test cylinders in the washing fastness tester and operate at 40°C (104°F) for 30 minutes, ensuring consistent temperature for reliable, real-world simulation.

5️⃣ Rinse Thoroughly

After testing, open the lids and rinse the test and control fabrics thoroughly to remove detergent residue. This ensures accurate colorfastness results for colorfastness evaluation.

6️⃣ Dry and Evaluate

Air or flat dry the fabrics. Inspect the control fabric for color transfer or staining, and rate changes using the ISO 105-C Gray Scale, scoring from 1 (severe change) to 5 (no change).

How HwaFune Supports Your Business by Reducing Complaints and Returns?

At HwaFune, we help our B2B partners minimize complaints and returns by providing highquality fabrics designed to meet your needs:

• Exceptional Colorfastness: Colors resist fading or transferring even after repeated washes.
• Proven Quality Assurance: Backed by rigorous testing and verified data, HwaFune strictly ensures every fabric meets high standards.
• Global Standards Compliance: Tested under ISO 105-C for consistent quality.
• Cost Efficiency: Reduce issues, lower complaint handling costs, and boost trust.

Partnering with HwaFune ensures dependable fabric performance, helping you deliver satisfaction and build loyalty with your customers.

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