Material web of both a bellows of a passage between two vehicles with a jointed connection and the material of the apron of an air passenger boarding bridge or steps

The subject matter of the invention is a material web (20) of a bellows (6) of a transition (3) between two vehicles articulated to one another or material web of the front canopy of a passenger boarding bridge or passenger stairs, wherein the material web (20) has at least one reinforcing layer that has an elastomer coating (21, 22) on both sides, wherein the at least one reinforcing layer is formed from a nonwoven (9), wherein an adhesive promoter layer (7) is arranged between the nonwoven (9) and the elastomer coating (21, 22).