Fly
Fly turns up in 2 fields: nonwovens, printing. Here is what it means to the people in each one.
Fly in nonwovens
Loose airborne fibers released by opening, carding and cutting that settle on machines and floors.
Fly drifts off openers and cards and builds up on frames, ducts and light fittings, where it is a fire hazard and can drop back into the web as clumps. Good extraction, steady humidity and the right fiber finish keep it down. Crews blow down and vacuum fly on a fixed schedule.
"Fly is building up over card two again, get it cleaned before a clump drops in the web."
Fly in printing
A mechanical delivery mechanism on a press that catches and stacks printed sheets.
A swinging mechanical rack equipped with long wooden or metal fingers that catches freshly printed sheets as they come off the cylinder of a press. The mechanism flips over in a rhythmic motion to gently lay each sheet flat onto the delivery pile, preventing the wet ink from smudging.
"Adjust the tension on the fly so it drops the heavy cover stock squarely onto the stack instead of throwing it against the backstop."