A. Requirements
The 9L-EPS insulated box must maintain an internal temperature of 0℃ for more than 36 hours in a constant temperature environment of 32℃.
B. Configuration Parameters
1. Basic Information of EPS Insulated Box + Ice Packs
2. Basic Information of EPS Insulated Box + Ice Packs
Information Type | Details |
EPS Box External Dimensions (mm): | 375 * 345 * 315 |
EPS Box Wall Thickness (mm): | 40 |
EPS Box Internal Dimensions (mm): | 295 * 265 * 255 |
EPS Box Volume (L): | 20 L |
EPS Box Weight (kg): | 0.48 kg |
3. Basic Information of Ice Packs
Information Type | Details |
Ice Pack Dimensions (mm): | 210 * 135 |
Ice Pack Phase Change Point (℃): | 0℃ |
Ice Pack Weight (kg): | 0.5 kg |
Ice Pack Quantity (pcs): | 12 个 |
Total Ice Pack Weight (kg): | 6.0 kg |
C. Test Results
Test Curve and Data Analysis:

In a test environment of 27.7~33.3℃ (average 31.1℃), the insulation duration at various points is as follows:
Position | Duration Maintaining 0~10℃ (hours) |
| Bottom | 45.1 |
| Center | 44.8 |
| Top | 39 |
D. Test Conclusion
In a test environment of 27.7~33.3℃ (average 31.1℃), the 9L-EPS (0~10℃) insulated box maintained an internal temperature of 0~10℃ for 39 hours.