Singeing - Textile Section

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Singeing Process .

In the wool and cotton finishing it is sometimes necessary to remove the hair from the fabric in a way to highlight the armor, making it perfectly clean and sharp. Since the topping operation it can be insufficient, too risky or difficult on very thin fabrics or with very short hair,
this is eliminated by burning it.

Processing technology
It is normally carried out on raw pieces since the combustion residues must be eliminated
with a wash.
The fabric must pass at a distance of 1.5 / 4 mm from the visible tip of the flame,
with a sliding speed that can vary from 60 to 120 meters per minute.
The ways in which the fabric is presented to the action of the flame may vary depending on the
type of machine and article to be treated and it is particularly important for the final result:
right angle burning on loose fabric (see figure A) is the most common;
tangential burn (figures C and D) is used for delicate fabrics and above all to eliminate
the protruding fibers (light burning);
fabrics composed of heat sensitive fibers (such as polyester) are often protected by adopting
a water-cooled roller (fig. B, point 1);
when the fabric has to undergo the operation on both sides, two point-blank devices will be needed,
one for the right and the other for the reverse.
Some machines install four point-blank devices, two for each face of the fabric.
It is very important to adjust
the gas-air mixture, so as to have a prevalence of the latter;
the flame, which must not be bright, therefore oxidizing, otherwise leaves carbon residues
and sooty on the cloth.
Singeing process
Singeing prused

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