By Mohsen Miraftab
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Additional resources for Ecotextiles: The way forward for sustainable development in textiles
After nylon is dissolved in a solution such as formic acid, a supercritical CO2 as an anti-solvent is added to precipitate the nylon out of the solution. Both the solvent and the anti-solvent can be recycled. DEPOLYMERIZATION OF NYLON Recovery of raw chemicals that can be used to produce virgin-quality nylon is a very attractive approach. Chemical recycling of nylon 6 carpet face fibers has been developed into a closed-loop recycling process for waste nylon carpet [16,17,18,19]. The recovered nylon 6 face fibers are sent to a depolymerization reactor and treated with superheated steam in the presence of a catalyst to produce a distillate containing caprolactam.
Very little post-consumer carpet at present is recycled. To establish a sustainable commercial network to recycle fibrous waste, operations based on different technologies must coexist such that different types of materials collected can be recycled to the greatest extent. This paper reviews technologies for carpet waste recycling. INTRODUCTION The US carpet industry is responsible for 45% of world’s carpet production . The great majority of carpet is made by tufting. In this typical construction, face fibers are tufted on to a primary backing and locked into place by an adhesive layer (latex filled with CaCO3) and a secondary backing fabric.
Connections have been made between communication and improved environmental performance and these suggest that ecodesigned textile and clothing products cannot be successfully developed until a deeper understanding of the supply chain is attained . Designers are often isolated, for example, from the finishers and therefore unaware of the environmental demands being made to this section of the product development process. A summary of existing communication channels throughout the textile industry have been illustrated in figure 2 below.