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The preparation of the raw fabric Page 16
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info
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Timetables
Working hours: 09.30 / 12.30 - 16.00/18.00 From Monday to Friday.
Purpose of processing
The pieces coming from the crude oil control phase,
they are usually stacked one by one on special pallets or already on a roll
they must be divided into articles based on the processes they will have to undergo,
then sew head to tail, to undergo the same treatments
and again stacked on pallets or wrapped in large rolls.
By head we mean the head of the piece where the brand with the characteristics of the article is present;
the tail is the opposite part, in the direction of the length of the piece.
The lightest and most delicate fabrics,
which do not tolerate bending resulting from folding
or which immediately require extensive work,
they must be rolled into large beams made up of many pieces sewn head to tail.
Processing technology
The pieces, coming from the customer stacked or by roller,
must be deposited in the appropriate container (see figure A, point 1),
through which the fabric (fig. A, 2) passes
above a group of two driving cylinders (fig. A, 3), which guarantees regular tension to the fabric
and eliminates any creases, especially on light and delicate fabrics,
in a storage tank (fig. A, 4),
between a brake (fig. A, 5) which regulates its tension,
in a motorized spreader (fig. A, 6),
on a fabric guide (fig. A, 7).The fabric is then
accompanied by some return rollers under a drive cylinder (fig. A, 8) e
if necessary, on a brush (fig. A, 9).
Having reached the end of its journey, the fabric must be rolled into large rolls or stacked (fig. A, 10).
Execution of the work
The preparer must:
pay close attention when passing the fabric to avoid creases forming
from the cradle of accumulation,
from the motorized spreader,
from the fabric guide.
adjust the brake so that the fabric does not fray.
pay attention when sewing the pieces from head to tail, leaving
the right side of the fabric on the same side for all pieces.
If the pieces must undergo carbonization operations,
it is essential to sew them with a synthetic fiber thread or one resistant to sulfuric acid.
The preparer must also:
check the regularity of the chain stitches that join the pieces, both in terms
of distance and continuity.
establish the type of sewing to be carried out, based on the fabric and finishing processes:
– chain stitch (see figure C);
– “cut and sew” (see figure E).
These stitches can be removed easily.
The "cut and sew" sewing is carried out with a machine that sews the pieces
and then cutting the excess part of fabric, to prevent the fabric from creating bulges,
overlapping the sewn fabric flaps. This inconvenience mainly occurs when
the fabric is wound on rollers.
If the chain stitches are not even
check the correct functioning of the stapler,
redo a second seam correctly, i.e. following the right thread.
Services
After the sale of the machinery, we also assist you in logistics and, if desired by the customer, we have technicians capable of reassembling and starting up the machinery.
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