Patent ID: 10999052

Abstract:
Cauls and methods of using the same are provided. The caul includes a reinforcement material having one or more elastic fibers and a polymer having one or more shape memory polymers. The caul is operable to transition from a rigid state to an elastomeric state and from an elastomeric state to a rigid state in response to stimuli. Methods of using cauls to produce composite articles involve positioning one or more fiber layers between a caul and a cure mold surface when the caul is in a rigid state. The fiber layers, caul, and cure mold surface may be covered with a sealed barrier and a pressure gradient may be applied. Before, after, or before and after performing the vacuum the fiber layers may be impregnated with resin. The fiber layers may be cured, which may provide a stimulus to transition the caul from a rigid to an elastomeric state.