Definition
In this type of runner, plastic is injected through a cold channel exposed on the face of the mold. It allows for faster cooling, although it increases the projected area.
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Cold Runner
Design
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Related terms
- Hot RunnerDesign
Hot channel system that keeps the molten material at a constant temperature inside the mold. It consists of a set of heated nozzles that allow the plastic to flow uniformly.
- Projected AreaProcess
Flat frontal shadow of the mold face, where the sealing perimeter or parting line is formed. It is measured in in² or mm² and its main function is to help determine the optimal clamping force.
- RegrindMaterial
Material resulting from a molding process, mostly cold runner. This material is ground and recirculated into the molding process.
- RunnerDesign
The entire path the plastic travels from the sprue entry to the injection point of the cavity or cavities. Molds can have a cold runner, hot runner, or a combination of both.