Slip chain conveyor is a powered loading dock to trailer integrated vehicle loading system capable of transferring 26 pallets from dock to trailer in only 90 seconds. The system has found immediate applications in the beer, soft drink and general beverage industries as well as in the handling of typical palletised dry freight. This highly efficient system incorporates 5/8-inch triplex roller chain for increased breaking strain. An overlapping labyrinthine construction of UHMW and extruded aluminium channel in which a protected air cell zone is formed provides enhanced air bag protection from broken glass and general pallet debris. This integrally powered loading dock/trailer combination allows freedom and flexibility to load and unload a wide variety of palletised goods in a speedy efficient manner with minimum vehicle downtime.