It is clear that the tanks are called pre-wash and rinse, depending on the position they occupy
in the chain, they do actual washing, where the countercurrent water can reach a certain temperature
of approximately 40/50°C in relation to that assumed in the storage tank, which it can reach
98°C.
It is useful to know in more detail the process that takes place in the four groups listed above:
prewash and rinse tank (fig. A). The fabric, guided by cylinders (fig. A, point 2),
it passes under the nozzles (fig. A, 1) fed in countercurrent by the bath taken from the filter tank.
An excess part of the bath remains as a wedge between the fabric and the cylinder (fig. A, 2) and pushed by
the latter penetrates the patches during advancement.
The other part of the excess liquor not retained by the fabric is sent into the filter tank by a
conveyor (fig. A, 3).
Subsequently, the other side of the fabric is also washed by other nozzles (fig. A, 4) with the same
previously indicated method (fig. A, 5) and the excess bath pushed by
another conveyor (fig. A, 6) for another filter tank.
A series of small controlled conveyor cylinders (fig. A, 7) carries the piece between two squeezer cylinders
(fig. A, 8), then it goes to the tank for the next treatment scheduled in sequence.
Fabric storage tank (fig. B). In this tank the fabric is subjected to the operation of
soaping with diluted bath with independent recirculation. It can be worked both in high bath and in low bath
low bathroom. A series of coils (fig. B, 1) on the bottom of the tub heat the bath up to 98°C.
The piece, coming from the previous tub of the machine, passes into the bath through
a series of driving and return cylinders (fig. B, 2) where it is soaped.
As it advances, the fabric is kept taut and widened by a series of cylinders until
reaches the squeezer (fig. B, 3). It then passes into the tank for the next scheduled treatment.
Fabric impregnation tank (fig. C). When provided, this tank is equipped with coils
of bath heating (fig. C, 1) is inserted at the beginning of the machine.
The fabric, coming from the pallet, passes into the imbibition bath via a cylinder (fig. C, 2)
and, subsequently above and below the conveyor cylinders (fig. C, 3) where the jet of the
bath through two sprayers or nozzles (fig. C, 4),
then it passes through a tensioner/expander (fig. C, 5) and a squeezing unit (fig. C, 6) placed
outside the machine that conveys the fabric to the next machine in the process.
Fabric cooling tray (fig. D). It is placed at the end of the car and is
built with a scarf (fig. D, 1) with two or three cylinders placed outside the body of the machine.

This section of the process can be used for normal tissue cooling which
occurs via two sprayers of water at room temperature but can also be used for addition
of any auxiliary products that the fabric may require. The other organs of the tank are the same
to those indicated for the impregnation tray (fig. C).
Given the different solutions that this machine allows, the prewash and rinse tank (fig.
A) which normally works against the current, can exclude each individual tank if it occurs
used for independent treatments with different baths. Each tub is also equipped with a pump
of bathroom recirculation.