Seamless polypropylene bag forming die

The utility model relates to an industrial die, in particular to a seamless polypropylene bag forming die. The technical scheme is as follows: the seamless polypropylene bag forming die comprises a moving die and a fixed die, wherein at least one positioning concave groove with an open top is formed in the press-fitting interface of the moving die and the fixed die, circulating cooling water pipes are arranged on the longitudinal faces of the moving die and the fixed die respectively, at least one positioning column is arranged on the press-fitting face of the fixed die, a positioning hole is formed in the press-fitting face of the moving die and engaged with the positioning column, fixation holes are formed in the top of the moving die and the fixed die respectively, and the positioning column is fully embedded in the positioning hole under the die-closing condition. The positioning concave grooves are arranged in the longitudinal direction. The diameter of each positioning column is less than that of the co