The hand lay-up is the most basic and easy production processing used on thermoset composites product. By applying or laying prepreg materials(fiberglass woven roving, woven roving, different combo mat onto a tool,then press the roller by hand to remove the air bubbles,then create a lamination layers.
Each layer need to apply resins ,it called wet lay-up.After all，will form a reinforcement layer with certain thickness.
