Method for producing primary packaging having an integrated septum , characterised by the following method steps: a) providing a septum , b) providing an injection-molding die having two die halves (4, 5; 104, 105; 204, 205) that can be moved relative to one another, wherein one die half (4, 5; 104, 105; 204, 205) comprises a holder for the septum , and the other die half (4, 5; 104, 105; 204, 205) comprises a stamp , c) positioning the septum in the injection-molding die , d) moving the two die halves (4, 5; 104, 105; 204, 205) of the injection-molding die such that a cavity is formed that corresponds to the shape of the primary packaging to be produced, wherein the stamp and the holder are pressed against one another when the material is injected, such that the septum , which is located at least in section between the stamp and the holder , is in a pressed-in, pretensioned state, e) injecting a material into the cavity in the injection-molding die via an injection opening in one of the die halves (4, 5; 104, 105; 204, 205) of the injection-molding die , the two die halves (4, 5; 104, 105; 204, 205) of the injection-molding die pretensioningly holding the septum therebetween, and a rim of the septum being overmolded by the material, a region of the septum in contact with the two die halves (4, 5; 104, 105; 204, 205) remaining free of material, wherein the septum is also overmolded with material from the front side thereof, f) cooling the injected material while maintaining a holding pressure, as a result of which the primary packaging is formed having an integrated septum , g) moving the two die halves (4, 5; 104, 105; 204, 205) of the injection-molding die such that the produced primary packaging having the integrated septum can be removed from the injection-molding die , and h) removing the produced primary packaging having the integrated septum from the injection-molding die . a) providing a septum , b) providing an injection-molding die having two die halves (4, 5; 104, 105; 204, 205) that can be moved relative to one another, wherein one die half (4, 5; 104, 105; 204, 205) comprises a holder for the septum , and the other die half (4, 5; 104, 105; 204, 205) comprises a stamp , c) positioning the septum in the injection-molding die , d) moving the two die halves (4, 5; 104, 105; 204, 205) of the injection-molding die such that a cavity is formed that corresponds to the shape of the primary packaging to be produced, wherein the stamp and the holder are pressed against one another when the material is injected, such that the septum , which is located at least in section between the stamp and the holder , is in a pressed-in, pretensioned state, e) injecting a material into the cavity in the injection-molding die via an injection opening in one of the die halves (4, 5; 104, 105; 204, 205) of the injection-molding die , the two die halves (4, 5; 104, 105; 204, 205) of the injection-molding die pretensioningly holding the septum therebetween, and a rim of the septum being overmolded by the material, a region of the septum in contact with the two die halves (4, 5; 104, 105; 204, 205) remaining free of material, wherein the septum is also overmolded with material from the front side thereof, f) cooling the injected material while maintaining a holding pressure, as a result of which the primary packaging is formed having an integrated septum , g) moving the two die halves (4, 5; 104, 105; 204, 205) of the injection-molding die such that the produced primary packaging having the integrated septum can be removed from the injection-molding die , and h) removing the produced primary packaging having the integrated septum from the injection-molding die . <EOS>