An analytical model for strip rolling operating with the lubricants of the oil-in-water emulsions in the mixed regime is developed. The model of lubricant film formation in strip rolling with oil-in-water emulsions utilizes the dynamic concentration theory of Schmid . Under the condition of large fractional contact area ,the model combines an alternative average Reynolds equation for longitudinal surfaces with an analysis for the influence of bulk plastic flow onthe effective hardness of the strip asperite and an approach to allow for theinfluence of roughness on the lubricant flow in the mixed lubrication .The numerical results are very similar to the classic frictional models of the rolling processes, so we can get the more realistic frictional models for rolling operating with the oil-in-water emulsions. The implications of the numerical results with respect to the lubrication of the rolling processes will be discussedd.