Manufacturing composites with VESTOSINT^® powders

Scattering process

Because of the round shape of VESTOSINT^® particles, they have outstanding flow properties. This is why they can be applied extremely well in the scattering process and then melted in a downstream oven. The use of calendars ensures intensive impregnation of the filaments or fabric. This process is particularly suitable for fabrics with large surface areas. Two passes through the scattering station allow for double-sided coating.

Spray process

As with electrostatic powder coating, the powder is sprayed with a spray gun onto strips that have been widened into individual filaments in the coating space. By heating to temperatures above the melting point, a bond is obtained between the reinforcing fiber and the VESTOSINT^® powder. This process is particularly suitable for strips.

Suspension process

Another method for manufacturing composites is impregnation with an aqueous VESTOSINT^® suspension. In this case, very fine powders can be used, making high fiber volume contents achievable.