Plastic body and a production system for making a plastic body

A plastic body comprising:

• a mid region configured as a tubular-shaped hollow body and having first and second ends;
• first and second closed solid bodies closing off said mid region at said first and second ends, respectively;
• said tubular-shaped hollow body and said first closed solid body conjointly defining a transition;
• a displacement body disposed at said first end of said tubular-shaped hollow body at said transition;
• a hollow space formed at said second end of said tubular-shaped hollow body;
• said hollow space extending between said tubular-shaped hollow body and said second closed solid body;
• said displacement body having an opening for a plug-on section of an injector nozzle;
• an injector opening disposed approximately between said tubular-shaped hollow body and said hollow space;
• said injector opening being the only connection of said hollow body to the outside;
• said injector opening having a diameter (L) and said displacement body having a diameter (d);
• and,
• said diameter (L) and said diameter (d) conjointly defining a ratio (L/d) of less than approximately 0.7.