Injection-molded preform for the production of a plastics container in a blow-molding process, plastics container produced therefrom, and production method for the preform and/or the plastics container

An injection-molded preform for production of a blow-molded plastic container, the preform comprising:

• an elongated, tubular preform body, which is closed on one longitudinal end and which has a neck section that is provided with a pour opening on another longitudinal end, the neck section having an outer surface;
• and
• an injection molded closure part which includes a flip-top closure, a hinge and a cuff having an annular section with an inner wall, the flip-top closure is fastened in one piece to the cuff via the hinge
• wherein said inner wall rests directly on the outer surface of the neck and completely encloses an annular area of the outer surface
• and the neck section includes an injection molded connection to the injection molded closure part, wherein the injection molded connection is produced by injection molding the outer surface of the neck of the tubular preform directly onto the inner wall of the annular section of the cuff of the injection molded closure part and results in an elimination of a sealing zone between the closure part and the preform
• wherein the flip-top closure has a sealing cylinder which projects from a bottom of the flip-top closure and which, for closing the pour opening of the neck section of the preform, slides into the pour opening of the preform.