Submarine gate

A submarine gate (Figure 2.1 Ih) is one that goes through the steel of the cavity. It is very often used in automatic molds. 

Typical gates for fascia moldings include submarine gating into a protruded tab which is formed as part of the ejector system. The tab is then left on after ejection for use as location points for further decorative processes. Upon completion of decorative processes (i.e. silk screening, painting, etc.) the tabs can be broken off or left as part of the final product. 

Narrow angle submarine gate will break off on mnlii npcning. 

Figure 7-13. Submarine Gates Require Broad Taper"...

With a curved tunnel gate (also called submarine gate or cashew gate, Figure 1.38) it is possible to position the gate on the back of the molded part where the appearance is as little affected as by the markings of the ejector pins. 

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