Airbag modules are necessary items for passive safety systems in automobile. Airbag covers are usually used for covering modules and must be torn easily by airbag cushion deployment in various environmental conditions because airbag covers have to work very low and high temperature. In order to meet the performance of TPO for airbag cover, optimized compositions were made with mixture design and Taguchi method by DOE of DFSS. Optimized compositions of TPO by DFSS could satisfy material properties and airbag deployment test in heat aging, temperature cycle and thermal shock conditions.

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