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Development of an Economically Sustainable Recycling Process for the Footwear Sector

机译：开发鞋业经济上可持续的回收过程

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摘要

The worldwide consumption of footwear is estimated to be in excess of 20 billion pairs of shoes per year. At present less than 5% of these are recycled or reused, with most being disposed of in landfill sites around the world. In fact, the majority of current footwear recycling schemes are led by charitable organisations, for the purpose of reusing the shoes in developing countries. However, not all of the collected shoes are deemed suitable for reuse, with a sizeable amount of these old shoes more suited for material recycling due to their poor conditions. Material recycling of footwear products is however a challenging problem with most modern shoes containing a complex mixture of leather, rubber, textile, polymers and metallic materials. Furthermore due to the relatively low value of recoverable materials, the cost of the shoe recycling processes has to be kept to a minimum. This paper discusses a four step methodology that has been developed to create a 'market driven' material recycling approach for footwear products. A key point outlined in this paper is that for end-of-life products with relativity low hidden value such as footwear products, currently it is not economically feasible to obtain recycled materials that can compete with virgin materials in the market place. Therefore, a more realistic level of material recycling is proposed for footwear sector, using commercially available automated recycling technologies.
机译：全球鞋类消费量估计每年超过20亿双鞋。目前少于5％的人被回收或重复使用，大多数都在世界各地的垃圾填埋场处置。事实上，大多数当前的鞋类回收计划由慈善组织领导，以便在发展中国家的鞋子重用鞋子。然而，并非所有收集的鞋都被认为是适合重用的，这一旧鞋的量大量由于其差的条件而言更适合材料回收。然而，鞋类产品的材料回收是一个具有挑战性的问题，最具现代鞋含有复杂的皮革，橡胶，纺织，聚合物和金属材料混合物。此外，由于可回收材料的值相对较低，鞋再循环过程的成本必须保持最小。本文讨论了四步方法，已开发为为鞋类产品创建“市场驱动”材料回收方法。本文概述的一个关键点是，对于寿命终生产品，具有相对性的低隐形值，如鞋类产品，目前无法获得可与市场中的原始材料竞争的回收材料在经济上不可行。因此，采用商业上可用的自动回收技术提出了更现实的材料回收水平。

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