Abstract
This study aims to explain the effects of denier per filament (DPF) on low-stress mechanical properties and the transmission behaviour of multifilament woven polyester fabrics. To observe the effect of filament fineness precisely, poly (ethylene terephthalate) filament yarn having a DPF 0.6, 0.7, 0.9. 1.0, 1.1, 1.4, 2.1 from the same batch of polymer are produced. The filament yarns are converted to the fabric with constant areal density. The low-stress mechanical properties of fabric samples are measured by using the Kawabata evaluation system (KES-FB). Air transmission and moisture vapour transmission behaviour are recorded by air permeability tester TEXTEST FX 3300 and moisture vapour permeability tester PERMETEST. The air permeability of fabric is positively correlated with DPF in fully drawn yarn (FDY) and draw textured yarn (DTY) forms. However, the air permeability is found significantly higher in DTY yarn than FDY having the same DPF.
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