Water Repellency Optimization in Cotton-Lycra Knit Fabrics
A technical report on water repellency (WR) C0 testing for Cotton-Lycra Single Jersey fabrics using PHOBOTEX WR ACE and AATCC 22 spray test methodology.
Water Repellency Test Report
Customer: ARCHROMA | Recipe Code: 20./12
Sample Date: December 20, 2025
Project Objective
The primary objective of this study was to evaluate the Water Repellency (WR) C0 performance on the submitted fabric sample using a specific chemical formulation.
Fabric Specifications
Type: Single Jersey (S/J) Knitted Fabric
Composition: 95% Cotton / 5% Lycra
Weight: 180 GSM
Color: Black
Process Application
The chemical treatment was applied via a standard coating process method to ensure uniform distribution on the Single Jersey fabric.
Chemical Recipe Formulation
The dosage breakdown (g/L) for the applied chemicals. PHOBOTEX WR ACE is the primary active agent.
Drying Parameters
The coated fabric underwent a precise drying process to cure the chemical application.
Temperature: 170°C
Time: 2 Minutes
Test Methodology
Standard: AATCC 22 (Spray Test)
Measures the resistance of fabrics to wetting by water.
Water is sprayed against the taut surface of a test specimen under controlled conditions.
Evaluates the water-repellent efficacy visually.
Achieved Rating
70
Spray Test Result (AATCC 22)
Test Observation & Status
The sample achieved a rating of 70, which indicates partial wetting of the fabric surface and underside.
STATUS: FAIL
Summary & Next Steps
Current formulation (Recipe 20./12) did not meet the desired water repellency standards.
Rating of 70 signifies significant room for improvement compared to typical passing standards (90-100).
Recommended Action: Review chemical dosage or adjustment of curing parameters (Temperature/Time).
- textile-engineering
- water-repellency
- fabric-testing
- cotton-lycra
- aatcc-22
- chemical-finishing
- quality-assurance