(57) A method of conditioning and heat-setting textile products in an autoclave (21) is
disclosed comprising: two or more thermal cycles (C1, C2), at least one of which comprising
a transfer phase (16) of water present in the autoclave (21) to inside a recovery
tank (22), a suction phase (10, 12) to put the autoclave (21) under vacuum, a water
return phase (14, 15) from the recovery tank (22) to the autoclave (21), a heating
phase (11, 13) of water contained in the autoclave (21) to generate saturated steam,
a stay phase (35, 36) in the autoclave (21) for a predetermined time (tc, tp) of the
reached conditions of temperature (t11, t13) and pressure (p11, p13), restoring in
the autoclave (21) the ambient pressure (Pa) at the end of the last stay phases (36).
Each phase of transfer (16) and return (14, 15) of said water occurs spontaneously
by suction produced by the difference of pressure existing between autoclave (21)
and recovery tank (22).
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