UPF Rating vs. Fabric Construction Matrix
Isolating how weave density and yarn count drive UV protection, independent of chemistry
Overview
A construction matrix study measuring UPF rating across weave density and yarn count combinations, to separate structural from chemical UV protection.
Problem
UV protection in textiles is usually achieved by adding chemical absorbers, which increases cost and processing steps.
Objective
Determine whether fabric construction alone can reach UPF 50+ without any chemical treatment.
Methodology
A matrix of 12 plain-weave cotton fabrics varying in yarn count (20s-40s) and cover factor, each rated for UPF per AS/NZS 4399 with no chemical finish applied.
Materials
Grey cotton fabric samples woven to specification, standard UV spectrophotometer for UPF rating.
Experimental Design
Full factorial design across 3 yarn counts and 4 cover factors, with 2 replicate samples per cell.
Results
Pending — sample weaving is scheduled before testing begins.
Conclusion
Pending experimental data.
Future Work
If structure alone proves sufficient at practical cover factors, extend to blended fibers relevant to summer apparel.