Bài viết này giới thiệu một số thuật ngữ hay dùng trong kéo sợi xơ ngắn bằng tiếng Anh
Bale – pressed and bound
cotton fibre
Bale Lay-Down – Cotton bales set in
a row for the start of mill processing. The start of mill processing is called ‘opening’.
Carded Yarn – Yarn spun from
carded and drawn sliver. Carding and drawing are steps in the mill used to
clean and parallelise fibre in preparation for yarn production. Carded yarn is
less expensive than ‘combed’ yarn but is inferior in terms of yarn quality because
short fibres and neps are still present.
Colour – Colour is a primary
indicator of grade. Discolouration is due to range of influences including
trash and dust content, rain damage, insect secretions, UV radiation, heat and
microbial decay. Colour in cotton is defined in terms of its reflectance (Rd)
and yellowness (+b), which are measured by a photoelectric cell.
Combed Yarn – Sliver from the card
is combed to remove short fibre and nep and to make fibres parallel to the
sliver axis. Combed sliver translates into more uniform and stronger yarn.