Wall module and process for their manufacture.

A MODULE FOR WALL WAGON BODY has a frame between a layer of outer skin (6) and an inner coating layer (7), said WORKED WITH FRAME CROSS MEMBER frame (8, 9). In the hollow space (11) between Members (8, 9), THERMAL INSULATION IS PROVIDED (12). TO MAKE wall module especially resistant to buckling, particularly in the longitudinal direction of the car body, several members CONTINUOS frame formed of a material having a modulus ELASTICO EXCEED THE LAYERS OF COVERING (6, 7) extending in the longitudinal direction of the car body.