Germany's Packaging Ordinance of June 12, 1991, designed to eliminate any packaging that cannot be reused, recycled or incinerated for energy recovery. Its aim is to keep packaging separate from the municipal waste stream by forcing retailers and distributors to take back used packaging materials and reuse, recycle or dispose of it. A private company established by industry to fulfil obligations under the Ordinance, Duales System Deutshland (DSD), guarantees that the packaging of participating members will be collected for reuse or recycling. In return, the products of DSD members can bear the "green dot." (Environmental Packaging; U.S. Guide to Green Labeling, Packaging and Recycling. Thompson Publishing Group, October 1995).e intensive physical mixing in a molten polymer that is achieved during extrusion can homogenise different grades of materials and even some types and amounts of foreign material that might not have been removed during the recycling process. (Adapted from Modern Plastics encyclopaedia 1995).