WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
55.09 - Yarn (other than sewing thread) of synthetic staple fibres, not put up for retail sale. - Containing 85 % or more by weight of staple fibres of nylon or other polyamides : 5509.11 5509.12 5509.21 5509.22 5509.3 1 5509.32 5509.4 1 5509.42 - - Single yarn - - Multiple (folded) or cabled yarn - Containing 85 % or more by weight of polyester staple fibres : - - Single yarn - - Multiple (folded) or cabled yarn - Containing 85 % or more by weight of acrylic or modacrylic staple fibres : - - Single yarn - - Multiple (folded) or cabled yarn - Other yarn, containing 85 % or more by weight of synthetic staple fibres : - - Single yam - - Multiple (folded) or cabled yarn - Other yarn, of polyester staple fibres : 5509.51 5509.52 5509.53 - - Mixed mainly or solely with artificial staple fibres - - Mixed mainly or solely with wool or fine animal hair - - Mixed mainly or solely with cotton 5509.59 - - Other - Other yarn, of acrylic or modacrylic staple fibres : 5509.61 5509.62 - - Mixed mainly or solely with wool or fine animal hair - - Mixed mainly or solely with cotton 5509.69 - - Other 5509.91 5509.92 5509.99 - Other yarn : - - Mixed mainly or solely with wool or fine animal hair - - Mixed mainly or solely with cotton - - Other This heading covers yarns (other than sewing thread , whether sin le or multiple (folded), obtained by spinning rovings of synthetic staple fibres o heading 55.0g /' Yarn of synthetic staple fibres is, however, excluded if ut up for retail sale heading 55.11) or if within the defimtion of Mne, corda e, etc. (heading 56.07r (see Parts (I) (B) \2) and (3) of the General ~xplmlanatory~ o t teo Section XI?. The heading includes yarn which has been processed as indicated in Part (I) (B) (1) of the General Explanatory Note to Section XI.
1.- Headings 55.01 and 55.02 apply only to man-made filament tow, consisting of parallel filaments of a uniform length equal to the length of the tow, meeting the following specifications : (a) Length of tow exceeding 2 m; (b) Twist less than 5 turns per metre; (c) Measuring per filament less than 67 decitex; (d) Synthetic filament tow only : the tow must be drawn, that is to say, be incapable of being stretched by more than 100 % of its length; (e) Total measurement of tow more than 20,000 decitex. Tow of a length not exceeding 2 m is to be classified in heading 55.03 or 55.04.