Abstract: Machine for continuously cutting open bags of deep frozen plasma including a feed table, a cutting area adjacent the feed table and a collection area. The cutting area has a cutting nozzle for cutting the deep frozen bags of plasma on a longitudinal median portion of the bag. The cutting nozzle emits a cutting jet of water under very high pressure. A conveyor made up of two endless belts continuously travels the deep frozen bags of plasma one after another under the cutting nozzle. The conveyor includes the two side-by-side endless belts mounted around horizontal rollers at opposite ends of a chassis. The belts have a small gap between them which is located vertically in relation to the cutting nozzle.