Abstract—The effects of processing method and carbon black (CB) nanofiller content on the creep resistance of the ultra-high molecular weight polyethylene (UHMWPE)/high density polyethylene (HDPE) blend were investigated. Two processing methods (M1 and M2) were used to prepare the materials, with CB content (up to 3wt.%). The results showed that the creep resistance of UHMWPE can be improved 32 and 10% with the addition of HDPE using M1 and M2, respectively. However, a reduction in the creep resistance was observed with the addition of CB nanoparticles using M1. Further enhancement (35%) was observed with the incorporation of the nanoparticles using M2. This was attributed to the improvement of the dispersion of the nanoparticle and the interaction between the nanoparticle and the blend matrix using M2. The Burger’s model was employed to understand the effect of the processing method and the nanoparticle on the creep mechanism.