the motor 360 could also be adjusted in coordination with the slicing speed if desired to adjust the slackness fig1 illustrates an alternate embodiment sheet interleave apparatus 600 of the present invention this embodiment is identical to the sheet interleave apparatus 300 except as noted identical reference numbers indicate like components the apparatus 600 includes a modified web material supply 601 that includes the spool 306 for dispensing web material 312 from a roll 308 the spool 306 is supported on a bracket 602 that allows the roll 308 to revolve to dispense web material 312 a non contact sensor 604 such as an ultrasonic or optical sensor senses the diameter of the roll 308 and communicates to machine control or to an alarm when the roll is depleted the spool 306 is fixed to a disc 605 to rotate therewith a disc brake assembly 606 is fixed to the bracket 602 and is selectively engageable to the disc 605 to stop the disc 605 and spool 306 from rotating as described below the web material 312 extends from the roll 308 and is threaded through a tension control station 610 and then to a draw station such as an unwind station 616 the web material 312 extends from the unwind station 616 into a feed station 630 the unwind station 616 is described in detail below fig1 illustrates the tension control station 610 in more detail the.