In order to promote the practical application of chemical micro-foaming polypropylene material as a lightweight means, this paper firstly discusses the application feasibility of chemical micro-foaming on door interior panels in terms of material property definition, structural design, CAE simulation and mold flow analysis. Then， differences between conventional injection molding and chemical micro-foaming injection molding are compared. Finally， the structure design and process requirements of chemical micro-foaming products based on core-back process is proposed, and the application of chemical micro-foaming process is prospected.

Automotive interior  /  Polypropylene material  /  Chemical micro-foaming  /  Lightweight