Plastic lumber is 100% plastic. The most common would appear to be HDPE (high-density polyethylene), although ABS (acrylonitrile butadiene styrene), PP (polypropylene), and PVC (polyvinyl chloride ...
U.S. Plastic Lumber Corp. is shedding its wood waste ... which include decking products made from recycled high-density polyethylene (HDPE), says Joseph Sarachek, the company's chief restructuring ...