conventional means such as a locking pillow block or the like not shown drum 16 is mounted immediately downstream from drum 15 in housing 11 drum 16 includes a ventilation fan 27 also having a diameter of 42 inches 107 cm note that fans 21 and 27 are shown in fig3 in reduced size for clarity an imperforate baffle 28 positioned inside drum 16 and enclosing the upper half of the circumference of drum 16 forces suction creating air flow to flow through the holes 20 in the lower half of the drum surface preferably the drum 16 contains the same number and size holes 20 as described above with reference to drum 15 the exiting batt is simultaneously cooled and carried away from housing 11 by a feed apron 30 both drums are ventilated and driven in the manner shown in fig4 as is shown specifically with reference to drum 15 fan 21 recirculates heated air back to the ventilation chamber of 12 of housing 11 by means of a recirculating conduit 33 drum 15 is driven in a conventional manner by means of an electric motor 35 connected by suitable drive belting 36 to a drive pulley 37 referring again to fig3 multilayer web structure w in uncompressed form enters housing 11 through inlet 17 suction applied through the holes 20 in drum 15 immediately force the web structure w tightly down onto the rotating surface of.