By Mohsen Miraftab
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Extra resources for Ecotextiles: The way forward for sustainable development in textiles
The repolymerized nylon 6 is converted into yarn and tufted into carpet. The carpets obtained from this process are very similar in physical properties to those obtained from virgin caprolactam. The “6ix Again” program of the BASF Corp. has been in operation since 1994. Its process involves collection of used nylon 6 carpet, shredding and separation of face fibers, pelletizing face fiber for depolymerization and chemical distillation to obtain a purified caprolactam monomer, and repolymerization of caprolactam into nylon polymer .
Currently in the United States alone, over 2 million tons of postconsumer carpet waste is discarded into landfills each year, and the amount is expected to increase to over 3 million tons by 2012. 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.
A range of after-treatments to confer additional properties is also available, these include impregnation, coating, infra-red singeing, calendering and lamination, to complete the manufacturing process. To complement the roll goods manufacturing Anglo Felt has developed a significant slitting, sheeting and cut parts converting operation and distribution business in order to provide maximum service for the customer. This versatile operation has provided the possibilities for development of specialist technical products from recycled fibres.