What is the specific protective difference between Type 4B and Type 5B industrial fabrics?
The core distinction lies in the physical state of the hazard: Type 4B is engineered to block pressurized liquid chemical sprays, while Type 5B is designed to filter out airborne solid particulates and hazardous dust. Both hold the “B” designation, meaning they provide a certified biological barrier against infectious agents according to EN 14126.
| Feature | Type 4B (Spray-Tight) | Type 5B (Particle-Tight) |
|---|---|---|
| Hazard Focus | High-intensity pressurized liquid sprays. | Hazardous dry dust and solid particulates. |
| Key Standard | EN 14605 | EN ISO 13982-1 |
| Sealing Method | Often requires taped seams for total liquid seal. | Focuses on overlap and material filtration. |
| Bio-Barrier | Certified under EN 14126. | Certified under EN 14126. |
Application Strategy
Kae Hwa’s InduBarrier™ fabrics are dual-capable. For environments with volatile liquid chemicals, Type 4B performance ensures the integrity of the barrier under hydraulic stress. For pharmaceutical or cleanup tasks involving toxic dust, Type 5B provides the necessary filtration efficiency without sacrificing the wearer’s mobility.