replete with microwaves and steam next the textile sheet f brought from the preceding screen printing station by the carrier belt 33 is introduced into the confined chamber c via the inlet 3 and entrained on the carrier belt b on the top surface of the horizontal bulkhead 9 in order to travel towards the outlet 5 in contact with steam under emanation of microwaves the size applied to the surface of the carrier belt b by the size applicator 31 enables tensionless but snug surface contact of the textile sheet f with the carrier belt b the textile sheet f is kept at moderate temperature and humidity during its travel through the confined chamber c due to contact with the carrier belt b which is soaked and heated during its running through the lower room of the confined chamber c emanation of microwaves fills the confined chamber c with hot steam of 100 u00b0 to 200 u00b0 c temperature in the case of the illustrated embodiment the textile sheet f with the carrier belt b advances in the upper room of the confined chamber from the inlet to outlet side whereas steam flows in the upper room from the outlet to inlet side this counter march of the textile sheet f raises thermal efficiency of the steam greatly the flowing direction of the steam however may be same as the advancing direction of.