Greenblum & Bernstein, P.L.C.
Sprue-bush and method for manufacturing sprue-bush
To manufacture a sprue-bush which is capable of suitably cooling a melt raw resin in a raw resin-flow path as a whole, there is provided a method for manufacturing a sprue-bush, wherein a shaped part is located on a base part to manufacture the sprue-bush, the base part comprising a raw resin-flow path and a cooling medium-flow path, wherein, in the shaped part, a downstream raw resin-flow path portion is located and a downstream cooling medium-flow path portion is also located, the downstream raw resin-flow path portion corresponding to a downstream side region of a raw resin-flow path of the sprue-bush, the downstream cooling medium-flow path portion being positioned around the downstream raw resin-flow path portion and corresponding to a downstream side region of a cooling medium-flow path of the sprue-bush, and wherein the downstream cooling medium-flow path portion is located to surround the downstream raw resin-flow path portion.
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
B B B B B B B B B Y B
B29C B22F B29C B29C B33Y B22F B29K B22F B33Y Y02P B22F
inventional additional inventional inventional inventional inventional additional inventional additional additional additional
Kenichi Mikio Satoshi Shinya Yoshiyuki
Tanaka Mori Abe Watanabe Uchinono