基于Polyflow的聚合物流延过程仿真

bstract: Simulation of the cast film process for viscoelastic polypropylene materials was carried out by using polyflow. The flow between the extrusion die and the chill roll was assumed to be evolution and non-isothermal. Obtain the factor affecting the thickness and neck-in through changing the draw ratio, input speed and air gap in the film casting process. Through the simulation, we find that as the draw ratio and air gap increse, the thickness becomes small. Wo also find that when the draw ratio and air gap become greater, the neck-in increses. So at the manufacturing process, we should find the critical value about draw ratio and air gap.