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1.1 ,This test method measures the resistance to slippage of warp yarns over filling yarns, or filling yarns over warp yarns, in woven upholstery fabrics, using a specific standard seam assembly by comparing the differences in test curves from a sewn and unsewn sample.
Note 1: ,This test method is derived from Test Method D434, from which appropriate changes have been made to make the method more applicable for upholstery fabrics.