According to the company, its Ecoveil materials can be made from jute, recycled carbon, bio-derived polyamide fibers, and a biodegradable modified cellulose acetate (MCA) fiber. The jute and polyamide 11 veils are produced with a shellac binder although other binder choices are also available to suit the specific application and fabrication requirements, TFP said.
The nonwovens are suitable for integration into a composite as a surfacing or semi-structural layer, helping improve surface finish, acting as a lightweight adhesive carrier or support or aiding consistent wet out of the resin during infusion, according to the company. They have a porous structure which can be used to facilitate improved resin flow in composite vacuum infusion techniques, improving resin transportation, reducing the need to use additional flow media.
The veils can also confer surface functionality to a composite part, such as electrical conductivity and chemical resistance with the recycled carbon veils and thermal insulation for jute and MCA, TFP said.