Model-free neural network approach captures large strain inelasicity. Inelastic model-free approach represented by recurrent neural network. Adaptive recurrent neural network represents different kinds of inelasticity (viscous, plastic and visco-plastic). Novel combination of neural network based material formulation and micro-sphere framework. Application of novel model-free approach to describe uncured rubber material. Different strategies to identify the parameters of the neural network. Performance demonstrated by numerical characterisation of uncured rubber. Analysis of a rubber forming process.