Creep behaviors of Bulk molding compound (BMC) has been researched using a creep bending instrument and in an oven. Because the creep compliance of BMC obtained by experiments showed wide dispersion even though on the same temperature, properties of creep compliance have been studied on statistical analysis. It was found that the data showed the normal distribution. From this fact, a creep compliance curve which was drawn from the median of data on each measuring temperatures and times, were used to make a master curve of creep compliance. It was concluded that visco-elastic behavior of BMC was an Arrhenius type since a master curve was given and the relationship between shift factors and tested temperature showed two straight lines on Arrhenius plotting paper.
