Most synthetic fabrics and fibers are made from Nylon or Polyester which are made from petrochemicals. Nylon was developed as a cheap alternative to silk, and as an artifical polyamide can be dyed with acid dyes the same as silk, wool and other animal fibres. Angelina fibres are available in many synthetic and metallic forms, some of which are heat bondable.

How Ingeo is made: http://www.natureworksllc.com/The-Ingeo-Journey/Eco-Profile-and-LCA/How-Ingeo-is-Made