If the clamp force is too high for the chosen injection molding machine, multiple cavities with identical projected areas can be set behind each other inside the mold.
Despite the multiple parting plane, the clamp force is used only from one.
The reason for this is the neutralization of the cavity pressures of opposite positioned cavities.
The middle plate synchronizes by tooth gear, hydraulic or an articulated lever.
A mold that is designed in this way is called a stack mold.

Stack Mold in Plastic Industry


Injection Mold: Stack mold with eight cavities.


Related topics:

Mold Installation Height
Tiebar Spacing
Number of Cavities

This glossary of plastic industry is provided by PLEXPERT Canada Inc.
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