A mold comprising: a core comprising: a core body ; and a sliding core on the core body , and separable from the core body in a first direction (A) with respect to the core body ; and an ejector to press the sliding core in the first direction (A) to separate a molded product (P) formed in the core from the core , wherein the ejector comprises: a driver positioned below the core and movable up to a lower surface of the core in the first direction (A); and a first rod movable in the first direction (A) to press the sliding core to be separated from the driver , a coupler configured to couple the first rod with, or separate the first rod from, the driver , and wherein: the first rod is configured to be pressed by a pressing rod (R); the driver is configured to move in the first direction (A) when the pressing rod (R) presses the first rod in a state in which the first rod is coupled with the driver ; and the driver comprises a first hole through which the pressing rod (R) is configured to pass to press the first rod in a state in which the first rod is separated from the driver, so that the first rod is movable further in the first direction (A) than the driver . a core comprising: a core body ; and a sliding core on the core body , and separable from the core body in a first direction (A) with respect to the core body ; and a core body ; and a sliding core on the core body , and separable from the core body in a first direction (A) with respect to the core body ; and an ejector to press the sliding core in the first direction (A) to separate a molded product (P) formed in the core from the core , wherein the ejector comprises: a driver positioned below the core and movable up to a lower surface of the core in the first direction (A); and a first rod movable in the first direction (A) to press the sliding core to be separated from the driver , a coupler configured to couple the first rod with, or separate the first rod from, the driver , and wherein: the first rod is configured to be pressed by a pressing rod (R); the driver is configured to move in the first direction (A) when the pressing rod (R) presses the first rod in a state in which the first rod is coupled with the driver ; and the driver comprises a first hole through which the pressing rod (R) is configured to pass to press the first rod in a state in which the first rod is separated from the driver, so that the first rod is movable further in the first direction (A) than the driver . a driver positioned below the core and movable up to a lower surface of the core in the first direction (A); and a first rod movable in the first direction (A) to press the sliding core to be separated from the driver , a coupler configured to couple the first rod with, or separate the first rod from, the driver , and wherein: the first rod is configured to be pressed by a pressing rod (R); the driver is configured to move in the first direction (A) when the pressing rod (R) presses the first rod in a state in which the first rod is coupled with the driver ; and the driver comprises a first hole through which the pressing rod (R) is configured to pass to press the first rod in a state in which the first rod is separated from the driver, so that the first rod is movable further in the first direction (A) than the driver . the first rod is configured to be pressed by a pressing rod (R); the driver is configured to move in the first direction (A) when the pressing rod (R) presses the first rod in a state in which the first rod is coupled with the driver ; and the driver comprises a first hole through which the pressing rod (R) is configured to pass to press the first rod in a state in which the first rod is separated from the driver, so that the first rod is movable further in the first direction (A) than the driver . <EOS>