This part will primarily characterize the characteristics of the waste glass fiber, it was considered to incorporate into PVC. The main objective in this part aims to study the influence of waste glass fiber loading on properties of PVC compounding. Moreover, the properties of composites depend not only on the addition of glass fiber, but also on the fiber form, orientation and degradation of PVC. So, the effect of mixing time, fiber orientation and fiber form of composites on physical and mechanical properties were also investigated.