HDPE, UHMW & HMWPE Materials. From HDPE, or high-density polyethylene (HDPE) sheets, to high-molecular-weight polyethylene rolls, we have the material and size of plastic you need, including: HDPE Poly Sheeting; UHMW; Acrylic (Clear) Polycarbonate (Clear) rrugated HDPE (Black or White) Black Repro HDPE Sheeting; HMWPE Roll