1) Milk-bottle materials 2) Moldable materials 3) Non-biodegradable items 
Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticisers, pigments, and stabilisers included (versus the resin, the homogeneous polymeric starting material). ... (12 Dec 1998) ... 
Refractory brick in a plastic-like moldable consistency
Non-metallic chemoreactive compounds molded into rigid or pliable construction materials, fabrics, etc. 
Industry/academic partnership - Plastics technology/R&D
In general, lures manufactured from flexible vinyl and poly carbonate derivatives.
(see also polyethylene, UHMWPE) A common term that in orthopedic devices refers usually to polyethylene and more specifically to ultra-high molecular weight polyethylene (UHMWPE).