Purpose of processing
The piece, folded or rolled, passes in succession through:
a tensioner (see figure B, 1); a brush (fig. B, 2) for the elimination of any fluff deposited on the fabric;
a fabric centering device (fig. B, 3);
a debonding scarf (fig. B, 4) and a weft straightener (fig. B, 5), which guarantee the
regular presentation of the fabric for drying.
Expanding cylinders (fig. B, 8) placed along the path make it continue smoothly
above the feed cylinder (fig. B, 9)
through the selvedge unrolls (fig. B, 10) and a fabric feeler (fig. B, 11)
above the boost wheels (fig. B, 12).
Then the piece is stitched onto the chain
passes through the steamer (fig. B, 14), made up of a carpet (fig. B, 15) and an electrical panel
(fig. B, 13) and then,
an enlarging / tightening screw (fig. B, 16) adjusts the height, before
drying sections, the number of which may vary according to processing and production needs,
which include:
two fans (fig. B, 18) one on the right and one on the left of the section, two exhaust ducts (fig. B, 17) placed above the section,
two series of blowers (fig. B, 19), a chain guide (fig. B, 20) to adjust the height of the piece,
a fume exhaust (fig. B, 21), in the last section of the branch, is used for the whole machine.
After drying, the piece passes into a cooling area (fig. B, 22), where a cylinder
dancer (fig. B, 24) holds it in the right tension to pack it into a large roll (fig. B,
23) or to deposit it in layers (fig. B, 25) on the appropriate pallet.
Processing Technology
The heat setting operation, which is carried out both to make subsequent processing easierwhich, in order to satisfy the needs of the garment maker, gives dimensional stability to the fabric, compatibly the behavior of the fibers at high temperatures. It improves on mixed polyester-wool fabrics
also the elasticity, the anti-crease effect and the resistance to pilling of the polyester part.
To perform the heat setting it is necessary to reach temperatures of 170/190 ° C and a permanence of the tissue in the chamber for 20/25 seconds. Since the flat branch guarantees uniformity of heat over the entire surface of the piece, it can be used for the heat setting of any article.
In a multi-module machine, heat setting can be done using: the first modules for drying and the last ones for heat setting.
The speed of the machine must be set so that the residence time is 20/25 seconds to dry piece, depending on the type of machine.
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