The inside liners of most bottle caps from drinks are made of aluminum leaf attached by pressure to PE (polyethylene) and PET (polyethylene terephthalate). The punching machine producing the cap liners discharges a large amount of aluminum remains, of which 47.6% is aluminum. So far, these remains have been used in land reclamation as industrial waste. Recently, procurement of reclaimed land has become very difficult, because the movement against environmental destruction is supported by local residents. Moreover, such waste can't be burned, because atmospheric pollution is caused by CO2, NOx and endocrine disruptors etc. This study has been developed from the point-of-view of effective use of resources and protection of the environment. Aluminum leaf remains, have been crushed from 10 mm to 20 mm by a primary crusher, and then have been ground to 1 mm by a high-speed hammer mill. Then these aluminum leaf particles have been separated into an aluminum particle group, and a PE and PET particle group by an electrostatic separator. We have learned that recovery of the aluminum particle group is 35.0% of the original material, and the group includes 63.9% aluminum, with a one-time grinding operation. On the other hand, the content ratio of aluminum increases to 71.2% with a three-time grinding operation, and to 75.7% with a five-time grinding operation. The total cost of recycling has not been calculated in detail. This is a considerably effective method, given the low energy cost for refining aluminum. In Japan, it is said that the electric energy cost for refining using recycling materials is about 3% of that when using bauxite as raw material. © 2000 Elsevier B.V. All rights reserved.