Internal Bubble Cooling May 2026

Numerical Study of Internal Bubble Cooling (IBC) in Film Blowing

A dedicated exhaust pipe, usually located in the middle of the die, pulls the warm air out. INTERNAL BUBBLE COOLING

As this air touches the hot plastic (molten polymer), it absorbs heat. Numerical Study of Internal Bubble Cooling (IBC) in

A complete IBC "piece" or system typically includes several integrated parts: INTERNAL BUBBLE COOLING

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: