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240 Landmarks TopEnvironmental > Bumper-to-bumper recycling
 Bumper-to-bumper recycling
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Plastic bumpers disposed of by replacement, repair and the like are used as bumper materials for new vehicles. Mazda has independently developed technology to remove the coating film attached onto the bumper almost completely from the resin material (recycled material). This recycling method was enabled by the development of such technology. In this recycling method, the first-ever coating film removal ratio as high as 99.9% was realized and the same high strength was obtained in parts that contain the recycled materials as bumpers made only of new materials. Additionally, high quality coating was made possible.
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Storage location:
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Year manufactured:2005
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Manufacturer:Mazda Motor Corporation (3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima 730-8670)
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Classification:
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Current status:Mass-production part
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Model name:
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Familiar name:
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Technical applications:
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Applied model:Mazda RX-8 (Commencing from mass production at end of March 2005)
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Year manufactured:2005
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Application year:2003
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Designed by:
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Collaboration:Satake Corporation, Takase Gosei Kagaku Corporation
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Device structure:
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Display portion:
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Performance function:Optical sorting technology that removes impurities in cereal was combined with a prior step involving a conventional mechanical coating film removal process. The pulverized parts (pulverized bumpers) are sent to the sorting process after the coating film removal process. This detects and sorts the pulverized parts that still contain film using an optical sensor before the films are removed. This increased the coating film removal ratio from a conventional level of 98.5% to 99.9%.
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Effect:Some coating films are difficult to peel off, which leads to a lower peeling rate and long peeling times. Pulverized parts where the coating film removal process is not sufficient can be removed in the sorting process. Therefore, the time required for the coating film removal process can be shortened and the time required for the whole process is reduced to about two-thirds.
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Points of interest, topicality:Awarded the Japan Society of Polymer Processing "Aoki-Katashi" Award in 2006.
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Features:
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Reference materials:Mazda Technical Review, No. 23,
Proceedings of the Society of Automotive Engineers of Japan No. 99-03
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Introduction:To recycle plastic bumpers that are collected from purchasing companies after replacement or repair as raw materials for new vehicle bumpers, the fact that they cannot be used unless the paint film is removed remains an issue.
Based on the development of new film removal technology combined with optical sorting technology, a high rate of coating film removal of at least 99.9% was made possible. Even in the parts that include recycled materials, the same high strength can be obtained as bumpers made only of new materials. Additionally, high quality coating was realized.
This bumper-to-bumper recycling method was first introduced in production of the RX-8 from the end of March 2005 and was expanded to the new model MPV in February 2006.
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