To maintain uniform pressure between two roll padder in Stenter machine: a review

In present review paper finite element analysis (FEA) technique is adopted to support the design of rubber covered two roll padder used in Stenter machine for squeezing application. Rollers bend due to the force acting on two ends and due to gravity hence pressure distribution along the nip is different. Design of two roll padder should be such that to maintain uniform pressure along the nip of rollers. This helps to reach the optimum solution for squeezing purpose and also reduce the load for the next drying application. A model is developed and by using efficient algorithm, effect of bending at the nip for pressure distribution is determined. The other options to achieve uniform pressure are crowning, additional support roller and internal bearing.