Numerical and experimental investigation of a counter flow cooling system for the blown film extrusion

Numerical optimization of a multi-jet cooling system for the blown film extrusion

“…[4,13]. The process model needs several iteration steps to simulate a realistic bubble behavior for one corresponding cooling situation.…”

“…In addition, the process model is able to optimize a cooling system geometry, cf. [13,14]. Therefore, proper initial conditions are required that allow minimizing the simulation effort and gaining a targeted optimization.…”

“…It is not possible to predict a film contour that results from an optimized cooling configuration or system. Consequently, Bussmann et al [4,11] developed a coupled simulation model for the blown film process. The model is able to describe the film behavior under changing cooling conditions due to different cooling systems or geometries.…”

Advantages and potentials of a blown film cooling system with a complete housing of the tube formation zone

“…The result of the pre-optimization delivers the condition of each simulated process state. Bussmann et al [5,6,8] developed this model to simulate a realistic blown film contour behavior. The basis of the process model consists of two numerical submodules.…”

“…Based on a numerical method, a novel cooling system for the blown film extrusion process was development to gain the heat exchange between the film and the cooling air. Considering that, a prediction model [2][3][4][5] and a process model [5][6][7][8] were evolved and applied to design the novel cooling system Multi-Jet. With the prediction model it was possible to identify and pre-optimize a cooling configuration of the Multi-Jet considering better heat transfer.…”