The best of both worlds
Integral molding is a way of vacuum laminating fiber reinforced components into a 3d printed mold that then remains part of the workpiece and serves functions other than forcing the reinforcing fibers into their final shape during the lamination process. The laminating mold then becomes an integral part of the workpiece, hence the name integral molding.
The technology is in a certain way an evolution of 3d printing and vacuum lamination, offering the best of both worlds. Fiber reinforced parts can be quickly made allowing for rapid prototyping and fast iteration.
Integral molding is often referred to as structural molding or functional molding.