A polymer that can be melted and solidified multiple times. Conversely, heat-set elastomers and thermosets undergo a crosslinking reaction upon heating to form a 3-D covalently bonded network and cannot be remelted. Thermoplastics include PE, PP, PVC, PS, PMMA, PVDC, PET, PC, Nylon, and Kevlar.
A semi crystalline polymeric material that softens when heated and hardens when cooled. While in the softened state, articles may be formed by molding or extrusion