Abstract: An in-mould reprint (IMR) injection mould with hot runner was designed for the notebook computer cover on the basis of the analyses of the IMR process and cover structure. A set of film positioning, sealing, adsorption and mobile mechanisms were designed according to the analysis of the IMR technology. Moreover, a reasonable mould structure was determined in terms of the analyses of the molded parting surface, gating system, side core-pulling mechanism, and exhaust and cooling systems. The characteristic design for the moving and fixed mould flip-mold structure, hot runner, offset fan gate and slanted ejector pin not only increased the product quality and production efficiency, but also reduced the production cost. The design reported by this work provides a good reference for the similar mould design.