CTD 261 EXAM 3 WITH QUESTIONS AND VERIFIED ANSWERS
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Course
CTD 261
Institution
CTD 261
CTD 261 EXAM 3 WITH QUESTIONS AND VERIFIED ANSWERSCTD 261 EXAM 3 WITH QUESTIONS AND VERIFIED ANSWERSCTD 261 EXAM 3 WITH QUESTIONS AND VERIFIED ANSWERSCTD 261 EXAM 3 WITH QUESTIONS AND VERIFIED ANSWERS
What is spinning? - ANSWER-conversion of fibers into yarns
what does ply refer to - ANSWER-two...
CTD 261 EXAM 3 WITH QUESTIONS AND
VERIFIED ANSWERS
What is spinning? - ANSWER-conversion of fibers into yarns
what does ply refer to - ANSWER-two or more strands twisted
what does plying do for properties of a yarn - ANSWER-as twist increases, yarn
strength and stiffness increase up to a point, level off, then begin to fall at very high twist
levels
filament yarns (types) - ANSWER-smooth filament mono or multifilament, tape yarns
fibrillated fibers or slit films, network yarns similar to tape yarns but with greater bulk and
comfort
filament yarns (products) - ANSWER-monofilament - sewing thread, fishing line bags,
nets, metallic fibers
smooth filament - apparel, interior, and technical end-use applications
tape - used in carpet backing, ropes, interior furnishings for support fabrics
network - technical products where bulk and low density are important
twist per inch indicates what - ANSWER-increasing the amount of twist increases yarn
strength. excessive twist places the fibers at right angles to the yarn axis, causing a
shearing action among fibers and a weaker yarn.
how does TPI affect properties of yarn - ANSWER-increasing the amount of twist
impacts yarn hairiness, comfort, cost, and linting. yarns with lower twist tend to be
hairier, pill and lint more, have better comfort when in contact with the skin and cost
less.
S-twist - ANSWER-when held in a vertical position, the spirals conform to the direction
of slope of the central portion of the letter S
Z-twist - ANSWER-the direction of spirals conforms to the slope of the central portion of
the letter Z
direct system of yarn size - ANSWER-used for filament yarns, deals with denier, tex,
and decitex *the length is a defined length weighted in grams* the grams per the
defined length is what is used to describe the filament yarn. THE SMALLER THE
NUMBER, THE FINER THE YARN
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