Abstract
Tests for certain physical properties of a range of worsted fabrics are reported, and it is shown that, for constant cover factor, plain-weave fabrics gave much lower air-permeabilities than twill and hopsack fabrics; air-permeability increased slightly with yarn linear density. The breaking loads of plain-weave fabrics were intrinsically greater than those of twills, which in turn were stronger than hopsack fabrics in the same sett; there was little effect of yarn linear density on cloth-assistance factor. The tearing strength was greatest for hopsack, which was followed by twill and then plain weave for similar setts. Tearing strength was reasonably well predicted by Taylor's formula. Flat abrasion tests against worsted crossbred fabric showed the plain weave to have the greatest abrasion-resistance in a given sett.
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