G678W-L cold resistance testing machine for shoes
G678W-L Shoe Cold Resistance Tester: Evaluating Low-Temperature Performance
The G678W-L cold resistance testing machine assesses footwear durability in subzero conditions, critical for ensuring functionality in winter climates. This article outlines applicable standards, key parameters, operating principles, and test methods for manufacturers prioritizing quality control in cold environments.
Applicable Standards
The tester adheres to global footwear cold resistance standards, including:
- ISO 20877:2020 (Footwear — Testing methods for uppers, lining, and insoles — Low-temperature flexing)
- SATRA TM177 (Cold resistance of footwear materials)
- QB/T 2912-2008 (Chinese standard for cold resistance of shoe soles)
Main Parameters
| Parameter | Specification |
|---|---|
| Temperature Range | -30°C to 0°C |
| Cooling Rate | 1°C/min (average) |
| Bending Force | 100N (adjustable) |
| Bending Angle | 90° (fixed) |
| Test Duration | 1-999 min (programmable) |
Working Principle
The tester uses a compressor-based cooling system to maintain subzero temperatures. Shoes are clamped in a bending fixture, and a pneumatic cylinder applies cyclic force to simulate walking motion. Sensors monitor temperature, force, and displacement, while a control panel adjusts parameters in real time.
Test Principle
- Sample Preparation: Condition shoes at 23°C/50%RH for 24h, then place in the test chamber.
- Parameter Setup: Define target temperature, bending frequency, and test duration.
- Automated Testing: The machine flexes the shoe repeatedly at low temperatures, recording force-displacement data.
- Result Analysis: Assess sole cracking, stiffness changes, and energy loss post-test to determine cold resistance.
This tester enables manufacturers to validate footwear for winter markets, reducing field failures and enhancing brand reliability. Its compliance with international standards and precise environmental control make it a vital tool for cold-weather footwear development.