In a standard blown film process, molten plastic is extruded through a circular die to form a tube, which is then inflated into a bubble. IBC systems add a sophisticated air-exchange loop inside this tube:
is a specialized air-management technology used in blown film extrusion to increase production speed and film quality. By constantly exchanging the air inside the inflated plastic "bubble," IBC systems remove heat from the internal surface, allowing the plastic to solidify faster than with external cooling alone. How IBC Works INTERNAL BUBBLE COOLING
A complete IBC "piece" or system typically includes several integrated parts: In a standard blown film process, molten plastic
Numerical Study of Internal Bubble Cooling (IBC) in Film Blowing In a standard blown film process