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Numerical Simulation for Fluid Flow of Flow Channel Structure in the Injection-Rolling Nozzle during Polymer Continue Injection Direct Rolling

IRN (injection-rolling nozzle) is the key component of the new Polymer CIDR (Continue Injection Direct Rolling) process, and it has higher requirements than the metal roll-casting nozzle. In order to achieve uniform exit velocity, a new type of structure of the flow channel which is called IRN flow channel structure is designed by combining with the two traditional flow channel characteristics, i.e. the fishtail and coat-hanger flow channel. Then numerical simulation was used to calculate the fluid field in IRN flow channel and analyze 3D flow phenomenon and characteristics. The simulation results show that it has a uniform exit velocity of the IRN flow channel with the value of about 0.06m/s.