1、 Test purpose
Using quantifiable and reproducible experimental and real-world data, verify the waterproof and windproof reliability of Jinlong PVC/TPU multi-layer composite tarpaulin under extreme weather conditions, providing decision-making basis for user selection, engineering design, and emergency response.
2、 Test object
1. Jinlong PVC multi-layer composite tarpaulin (code JL-5000)
• Base fabric: 1100D × 1100D polyester filament
• Coating: Double sided PVC+TPU waterproof film
• Weight: 650 g/m ²
Width: 4 meters (no splicing required by blade scraping process)
2. Comparison group: Traditional 550 g/m ² PE woven tarpaulin
3、 Laboratory Extreme Testing
Test Item | Test Standard | Golden Dragon Tarpaulin Results | compare PEtarpaulin | Conclusion |
hydrostatic pressure | ISO 811 | 3200 mmH₂O | 1500 mmH₂O | enhance 113 % |
tear-resistant | ISO 4674-A | warp 1 050 N /zonal980 N | warp 600 N /zonal550 N | enhance ≈70 % |
flame retardant | B1（GB/T5454） | Extinguish from fire, no melting droplets | fail | Meet the requirements of high-risk areas |
Low temperature bending | -40 ℃×200 time | No cracking | 7 Secondary cracking | Suitable for extreme cold |
UVaging | UVA-340 1000 h | Stretch retention rate 92 % | Stretch retention rate 62 % | life extension 5 Years and above |
4、 Real scene testing
1. Rainstorm scenario (2025-06-20~07-05, Pearl River Delta Sichuan Chongqing trunk line)
• Process: 3 rainstorm+2 high humid nights for 15 consecutive days (RH ≥ 90%)
• Result:
The average humidity inside the canopy is 71% (compared to 87% in the control group)
The moisture content of the goods only increased by 0.3% (compared to 1.8% in the control group)
- Zero condensation and water marks on the surface
2. Gale Scene (May 13, 2025, Inner Mongolia Grassland)
Instantaneous gust of 12 levels (33 m/s)
• Result:
- The tarpaulin is not torn, and the air column has no permanent deformation
The maximum tensile force of the anchor is 485 kg, which is less than the design limit of 500 kg
3. Blizzard Scene (2024-12-19, Changbai Mountain Forest Area)
• Process: 24-hour snow accumulation of 45 cm (equivalent load of 220 N/m ²)
• Result:
- Center sag of 8 mm (design allows for 30 mm)
2 hours after snowfall, the surface temperature rises to above 0 ℃ without freezing or adhesion
5、 Technical disassembly: Why can we achieve "zero leakage, zero tearing"
1. Multi layer composite: PVC surface anti puncture+TPU water blocking film+anti condensation non-woven fabric, forming a unidirectional moisture barrier and a reverse water blocking barrier.
2. Seamless blade scraping: one-time molding with a width of 4 meters, without longitudinal splicing, completely eliminating seam leakage.
3. High strength base fabric: 1100D polyester filament, with a 70% increase in tear strength.
4. Coating formula: Nano UV cured layer, performance does not deteriorate at -30 ℃~70 ℃.
6、 User Action Checklist
1. Selection:
Long term outdoor storage → JL-5000 (3 200 mm H ₂ O, 12 level wind)
• Temporary rescue → JL-3000 (2000 mm H ₂ O, Level 8 wind, cost ↓ 30%)
2. Installation:
The angle of the ground anchor entering the soil is 45 °, the depth is ≥ 40 cm, and the pull-out resistance is increased by 20%.
Installing a "drag reduction net" can reduce an additional 15% of stress in winds above level 12.
3. Maintenance:
Perform surface self-cleaning rinse every 6 months (lotus leaf effect coating, completed in 5 minutes).
After use in snowy areas, it is necessary to remove ice and debris from the edges of the snow to prevent freezing and cracking the next day.
