Container having a head piece, which container can be or is filled with a medium

A container filled with a medium and producible from plastic materials using a blow molding-filling-sealing method, the container comprising:

• a container body having a longitudinal axis;
• a head piece;
• a transition region connecting said head piece to said container body as integral components;
• a first head surface being on said head piece at a front end thereof, being penetrable by a piercing or cutting part and extending with a specifiable first curvature;
• and
• a second head surface being on said head piece and extending with a specifiable second curvature different from said first curvature, said first and second head surfaces transitioning into each other forming an overall head surface spanning a free end of said transition region directed away from said container body, being rotationally symmetrical relative to said longitudinal axis and extending concentric relative to said longitudinal axis, one of said first and second head surfaces being convex and another of said first and second head surfaces being concave relative said head piece;
• and
• a third head piece surface being on said head piece and extending with a third curvature different from said first and second curvatures, said third head piece surface having a bar-shaped stiffening rib.

A container filled with a medium and producible from plastic materials using a blow molding-filling-sealing method, the container comprising:

• a container body having a longitudinal axis;
• a head piece;
• a transition region connecting said head piece to said container body as integral components;
• a first head surface being on said head piece at a front end thereof, being penetrable by a piercing or cutting part and extending with a specifiable first curvature;
• a second head surface being on said head piece and extending with a specifiable second curvature different from said first curvature, said first and second head surfaces transitioning into each other forming an overall head surface spanning a free end of said transition region directed away from said container body, being rotationally symmetrical relative to said longitudinal axis and extending concentric relative to said longitudinal axis, one of said first and second head surfaces being convex and another of said first and second head surfaces being concave relative said head piece;
• and
• a cap with an elastomer sealing element connected to said head piece, said elastomer sealing element being essentially only located opposite a penetration surface of said head piece and being connected to said penetration surface with a small spacing.

A container filled with a medium and producible from plastic materials using a blow molding-filling-sealing method, the container comprising:

• a container body having a longitudinal axis;
• a head piece;
• a transition region connecting said head piece to said container body as integral components;
• a first head surface being on said head piece at a front end thereof, being penetrable by a piercing or cutting part and extending with a specifiable first curvature;
• a second head surface being on said head piece and extending with a specifiable second curvature different from said first curvature, said first and second head surfaces transitioning into each other forming an overall head surface spanning a free end of said transition region directed away from said container body, being rotationally symmetrical relative to said longitudinal axis and extending concentric relative to said longitudinal axis, one of said first and second head surfaces being convex relative to said head piece and extending axially along said longitudinal axis in a direction away from said container body and another of said first and second head surfaces being concave relative said head piece and opening axially along said longitudinal axis in the direction away from said container body, said first head surface surrounding said second head surface;
• and
• a third head surface being on said headpiece and extending with a specifiable third curvature different from said first and second curvatures, said third head surface being entirely laterally spaced from said longitudinal axis.