To make such a material into a carpet requires the addition of a variety of chemicals. We believe it is better to close the loop by slowing down or stopping the production of plastic in the first place. In terms of the impact on your health, purchasing a recycled carpet over a wool one is like buying canned vegetables over freshly picked ones. Regular carpet manufacturers blend nylon with wool fiber in a berber to create fill and keep the cost down. However, nylon doesn't flex and ends up cutting the wool as the carpet is walked on, giving it a much shorter life.
Plush carpets have the fiber cut straight like a lawn.
Berber carpets are woven with a medium to large yarn, looped into the backing. The yarn is needle-punched into a polypropylene or jute mesh. Glue is then applied to the back of the mesh, and a secondary backing applied to that. In the way carpets have been made for centuries, the warp and the weft are both wool. I'm allergic to wool clothing.