Glass Mat Thermoplastics

The Process

Traditional GMT composites are obtained by combining a polypropylene (PP), polyamide (PA) or thermoplastic polypropylene (TPP) matrix and a needled network of glass fibers.

Typical process implies heating of the material in a dedicated infrared or convection oven, and a subsequent transfer and  compression (form flowing). Full automated lines involve automatic material loading and part demoulding from the press.

Features and advantages

This class of material provides very good stiffness, strength, sound damping and impact performance at relatively low cost and mass, compared to other structural materials. Among the many advantages, we find:

  • High degree of functional integration and geometrical complexity
  • Full recyclability
  • Extremely high productivity

Automotive, Semi-structural parts:


PP, PA, Thermoplastic polyester (TPP)




Non woven mats

Curing time: less than 1 min

Fiber volume fraction: up to 20-25%


Different models available, up to 5000 tons of clamping force


Design, development and suppy of moulds


Solutions of motion control and industrial robotics