Internal Bubble Cooling 【Mobile PLUS】

As this air touches the hot plastic (molten polymer), it absorbs heat.

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: INTERNAL BUBBLE COOLING

Modern systems, like those from Addex Inc. or TSM Control Systems , use ultrasonic sensors to monitor the bubble's diameter. These sensors trigger automated blowers or valves to maintain a perfectly stable size. Core Components As this air touches the hot plastic (molten

Numerical Study of Internal Bubble Cooling (IBC) in Film Blowing or TSM Control Systems , use ultrasonic sensors

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

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

Fresh, often chilled air is blown into the center of the die to inflate the bubble.