These machines, usually named "pre-fixings"
or "vaporizers", represent the best solution for the steam-heating
This treatment is made on both artificial and natural yarn
and on articles too, heating them in presence of humidity,
i.e. by steam inside suitable autoclaves.
This heating process zeroes the discards
caused by the typical handling faults, thermo-fixes and eliminates
every undesired twisting effect from the fibers. The product,
treated in this way, presents a remarcable shrinking and elasticity
which increase its value. Two models are available:
atmospheric, with the maximum working temperature of
98°C at the sea-level;
pressurized up to 3,5 Bar of internal over-pressure,
with the maximum working temperature of 148°C al the
The whole construction is made with AISI 304 stainless steel.
Our APF COMPACT apparatus are mounted and connected on a frame,
so that the customer must only connect it to his own feeding
and wasting nets: neither the fixing at the ground is requested.
Our autoclaves are entirely insulated with rock wool protected
by aluminium sheets, so to reduce the steam consumption and
the warming up of the room.
Before the steam inlet, an high vacuum must be done
inside the autoclave, in order to let the steam reach the
inmost layers of the articles.
In the APF apparatus a suitable distribution-chamber and a
powerful fan guarantee a regular steam distribution.
This studied steam distribution and its
superheating compared with the ambient, avoid the formation
of steam condensation on the autoclave upper side and hence
any condensation drop on the material. These machines are
controlled by a very easy-to-use electronic panel, which includes
several warning levels.
The door, the locking system, the warnings and the safety
devices are always suited to the requested highest temperature
and pressure. The following four sizes are available: