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Within the last few years, significant developments have occurred which have made recycling of plastics waste materials a reality. However, before greater utilization of plastics scrap is achieved, product specifications must be rewritten which encourage greater use of recycled plastics.
This paper will present three broad classifications of plastics waste streams and the technical problems confronting recycling materials from each group. A new method of making various polymers compatible during reprocessing will be discussed. A flow diagram and cost factors will be given for a waste treatment plant which segregates solid wastes into individual components.
Costs and specifications for a new low pressure injection molding machine which molds commercially acceptable parts directly from scrap (up to 100 percent nonvirgin) will be detailed. Special attention is given to the use of the machine in fiber reclaiming, including the use of a special compacting mill necessary as an intermediate processing unit in this operation. A flow diagram for the fiber reclaiming process will be presented.
environments, wastes, waste disposal, polymers, recycling, fibers, pollution, plastics
President, Werner and Pfleiderer Corp., Waldwick, N. J.