What does spray water repellency test show?
Updated
The spray test observes how water droplets wet the fabric surface after falling. Both finish and fabric structure affect droplet spreading.
When comparing the same fabric before and after finishing or washing, record test method, washing procedure, and number of cycles. To assess water penetration, a separate penetration test is needed.
Related reading
Sources
- ISO 4920:2012
- 01 | Textile Finishing and Functional Treatments Handbook