167
the
mechanical
However,
the
agitation
during
processes
still
not
be
sufficient to
fabrics.
remove the
residual
distor-
may
tions
in the
distortions
from
Loop
resulting
yam
also
influence the
widthwise
relaxation
direction.
behavior
of
Furthermore.
the stitch
spirality may
the
in the
samples
with
an
increased
number
of
laundering cycles.
increases for each
and
fabric
and at
the
end of
density
the
type,
first
stitch
treatment,
washing
tumbling
Note also
density
reaches its
maximum.
that
to
contrary
previous
works
that open-end
tendency
samples
knitted fabrics
have
suggesting
spun
than
a
ones
8.
higher
shrinkage
[6.
ring
spun
LR
20.
and SR
lacoste and
26],
(ring spun
plain
density
have
stitch and
areal
jersey)
values
consistently
greater
than
LOE
and SOE knits
lacoste and
behind
(open-end
III).
spun
see Tables
II and
The
plain
this
jersey,
be
argument
of
FIGI’RE 3.
SEM
of
third
SM815,
photo
washing cycle.
washing cycle.
washing cycle.
the
use of
different
and
and
may
percentages
from
Agean
the
Greek
cotton fibers
in the blends
were
which
ring
open-end
The
spun yarns
produced.
(stitch
of
the
shrinkage potential
density)
FBOE)
fully
than
relaxed
blend
knits
is
FBB.
LB.
(SB.
spun
higher
that of
the
relaxed
and
corresponding
fabrics
fully
open-end
ring
LOE/LR. and
the blend
(SOE/SR,
Tables
F) (see
spun
II-IV ).
dyed
This
be
because
con-
knits,
may
spun
are
not
to
fibers,
the
taining dyed
polyester
dyeing
subjected
and
which
treatments.
can
stabilize the
bleaching
fabrics
by
heat
their
man-made
The
skew-
setting
parts.
ness
values
achieved
these
fabrics
also
by
may
imply
excessive
from
distortions,
a
loop
yam
probably arising
high
of
twist
liveliness
Tables
(see
One
degree
II-IV).
final
the
note about the
blend
to
fabrics: the fiber
of
spun
type
behav-
influence the
fabrics,
relaxation
inlay yarn
appears
ior
of
two-thread fleece
both
since for
a
stitch
given
the
stitch and
areal
values of
FBOE
cot-
length,
knits
density
~T/cotton,
50/50
than
(face
100%
yarn
inlay yam
FIGURE 4.
SEM
of
FMM800, first
photo
are
those of FBB ones
ton)
face
and
(both
greater
50/50
it
also tends
PET/cotton). Furthermore,
inlay
yarn
to affect the
course
wale
of
the base fabric
rather than its
spacing
Table
(see
the
IV).
measurements
spacing
The results of
of
and
cpcm,
wpcm,
relate
to
the
functions
IOOPS/CM2
graphically
appropriate
and
of the
of
the
knitted
we have
reciprocal
loop length,
found
that
there are linear relations
between
these
pa-
rameters
From
and
the
loop
type
length.
regression analysis
different
for
each
fabric
conducted
by taking
yarn
into
account and the correlation
coefficients
calcu-
types
lated,
it is
evident that
the stable
dimensional
on
properties
length.
of each
structure
much
stitch
depend very
so far as
the k
values
and
Moreover,
of
(k,.,
k&dquo;,
k,)
lacoste and
blend
spun
structures
are
the
concerned,
plain jersey
knits tend to
have
and
lower k values than the
In
the
corresponding
open-end
ring spun
samples.
case of the two-thread
fleece
the FBB
structure,
and FBOE
FIGURE 5. SEM
of
LOE700,
third
knits achieve
higher k
values when
to
F
the
photo
compared