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Development of Salvaged Bumpers Recycling System
Published May 20, 1998 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Conference
The recent growing interest in the global environment conservation and the saving of resources has necessitated the development of recycling technology for large plastic parts. This paper explains the new technology that was developed to commercialize cyclic recycling of the used bumpers, including those repaired with urethane paint, into virgin material using twin screw reactive extrusion. This method is a breakthrough in that two processes can be carried out simultaneously: p chemical decomposition of the paint film by means of an amine-based decomposing agent, and microdispersion of the decomposed paint film into resin with the screw, can be carried out simultaneously. Properties of the recycled material are equivalent to those of virgin material.