Spear System

About Spear System

The spear has a double heater structure consisting of a tip heater and a body heater.
The spear tip has been modified to directly heat itself.
There are a large variety of spears available to accommodate different resin types and applications.

Principle and Features of Spear System

Spear probe has long service life because of its thermal valve principle having no sliding part.
The resin at the sprue and runner is kept molten to maintain constant fluidity. Depending on the temperature of the gate land and a die, a very small amount of the resin solidifies along with the resin inside of the cavity.
After the molded product is removed, the spear tip is heated up to instantly melt the solidified resin at the gate land just before the next injection.

Overall structure of Spear System

Spear System consists of a spear (embedded into the die), a manifold, and a controller for output (temperature) control.

Spear System lineup