HECOL270 Lecture 7: HECOL 270 lecture 7
30 Sep 2016
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Hecol 270 application of textile science ! (cid:3) (cid:3) (cid:3) (cid:3) (cid:3) (cid:3) (cid:3) (cid:3) (cid:3) (cid:133) (cid:133) (cid:132) (cid:133) American society for testing and materials (astm) de ned a yarn as a continuous strand of (cid:3) (cid:3) textile bres, laments, or other materials in a form suitable for knitting, weaving, or otherwise intertwining to form a textile fabric ! Yarn types - staple and lament ! staple yarn (also called spun yarn):! composed of short staple bres held together by spinning - twisting ! Lament yarn:! composed of long continuous strands of bres grouped together and slightly twisted ! mono lament - one continuous strand ! multi lament - if more than one strand ! Single or ply yarns with irregular thickness as in slug yarns! Single yarns with tufts of coloured bre inserted as in ock or ake yarns!
