Blow molding needle for liquid cooling

A blow-needle assembly for liquid cooling comprising:

• a mold having a mold surface and a back surface and a passage therethrough, said passage having a passage wall;
• and
• a blow-needle having a tip, a narrow shank adjacent said tip, a wide shank, a tapered portion between said narrow and wide shanks, a base portion adjacent said wide shank, said base portion surrounded by an annular seal and an aperture therethrough, said aperture communicating cooling liquid to the interior of said mold, said needle being movable axially between retracted and extended positions and said tip being positioned generally recessed of said mold surface when said needle is in said retracted position and above said mold surface when in said extended position, said tip piercing a plastic parison within said mold when said needle is moved from said retracted position to said extended position, said annular seal sealing between said base and said back surface, and said tapered portion compressing said parison between said tapered portion and said passage wall to form fluid tight seal therebetween.

A blow-needle assembly for liquid cooling comprising:

• a mold having a mold surface and a passage therethrough, said passage having a passage wall;
• and
• a blow-needle having a tip, a narrow shank adjacent said tip, a wide shank, a tapered portion between said narrow and wide shanks and an aperture therethrough, said aperture communicating cooling liquid to the interior of said mold, said needle being movable between retracted and extended positions wherein said tip pierces a plastic parison within said mold when said needle is moved from said retracted to said extended position and said tapered portion compresses said parison between said tapered portion and said passage wall to form a fluid tight seal therebetween.