Patent ID: 8372328

Claim:
A semi-finished product for the manufacture of a closable opening device ( 100 ) for a sealed packaging which contains a flowable medium, wherein the device comprises a pour-out spout ( 2 ) with a flange ( 21 ), a cylindrical cutting element ( 3 ) with an upper edge ( 32 ) defining a plane surface and a lower edge ( 33 ) with one or more teeth ( 35 ), and an inner skirt surface with catches ( 36 ) which act in a radial direction and which cooperate with catches ( 46 ) on an inner side of a cover surface in a screw cap ( 4 ), the cylindrical cutting element ( 3 ) of the semi-finished product ( 1 ) with the lower edge ( 33 ) on which the teeth ( 35 ) are integrally formed, projects in the pour-out spout ( 2 ), the upper edge ( 32 ) of the cylindrical cutting element ( 3 ) projecting beyond an upper edge ( 25 ) of the pour-out spout ( 2 ), and the screw cap ( 4 ) with a cover surface directed to the upper edge ( 32 ) of the cutting element, and the pour-out spout ( 2 ) with the cutting element ( 3 ) and the cutting element ( 3 ) with the screw cap ( 4 ) manufactured in a separable manner as one piece via first and second breakage bridges ( 5 , 6 ).