The Containers and Packaging Recycling Law was enforced in 2000. The Japan Iron & Steel Federation (JSIF), as part of its voluntary energy-saving action plan, proposed a 10% energy reduction by 2010 compared with 1990 as the basis. Further, it has proposed an additional 1.5% energy savings by the use of waste plastics as a metallurgical raw material. Nippon Steel developed a waste plastics recycling process using coke ovens. This paper describes the technology for a waste plastic recycling process into chemical raw materials using coke ovens.