The Government of Canada’s terminology and linguistic data bank.

TUNNEL GATE [1 record]

Record 1 2014-04-11


Subject field(s)
  • Plastics Manufacturing
  • Facilities and Equipment (Rubber)

An edge gate where the opening from the runner into the mold is located below the parting line or mold surface ...


A submarine gate penetrates through the steel of the cavity. When the mold opens, the part sticks to the cavity and shears the piece at the gate. A properly located KO [knockout] pin, using the flexibility of the plastic, ejects the runner and pulls out the gate. This type of gate is usually used in automatic molds.


[In] conventional edge gating, ... the opening is machined into the surface of the mold. [In] submarine gates, the item is broken from the runner system on ejection from the mold.


submarine gate; tunnel gate: terms standardized by ISO [International Organization for Standardization].


  • Plasturgie
  • Installations et équipement (Caoutchouc)

Canal d'injection situé sous le plan de joint de façon que la carotte soit arrachée lors de l'éjection.


entrée sous-marine; entrée sous le plan; entrée sous le plan de joint : termes et définition normalisés par l'ISO [Organisation internationale de normalisation].


Campo(s) temático(s)
  • Fabricación de plásticos
  • Instalaciones y equipo (Caucho)

Canal de inyección situado debajo de la superficie de unión, de manera que con la operación de eyección la mazarota se desprende.


Entrada de túnel o submarina. La entrada es separada de la colada al abrir el molde o por medio de una ruptura forzada en el momento de expulsar la pieza. La entrada de túnel es adecuada para una inyección lateral.

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