Hot runner mold vs cold runner mold ( two plate mold vs three plate mold)

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Hot runner mold vs Cold runner mold(Two plate mold vs Three plate mold)
Two plate mold:
When the mold opens, the cavity plate and the core plate are separated to release the molded product.
Three plate mold
three plate mold has two parting surfaces. Compared with two plate mold, it adds a partially movable intermediate plate (also called a movable runner plate, on which the gate, runner, as well as other parts and components required for the core are designed) into the fixed mold half, so it is also known as a three plate mold
Hot Runner mold
As a common part of the injection molding system, the hot runner ensures that the plastic material in the runner and gate keeps the molten state by heating. Since the heating rod and the heating ring are arranged near or in the center of the runner, the whole runner - from the nozzle of the injection molding machine to the gate - is kept in a high temperature status, so that the plastic in the runner is kept molten. Usually, it is unnecessary to open the runner to remove the sprue after shutdown.
More detail,please visit:
www.moldchina.com/hot-runner-...
www.moldchina.com/three-plate...
www.injectionmould.org/2019/0...
www.injectionmould.org/2019/0...
www.injectionmould.org/2019/0...

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Instructive video. Thank you for posting !

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[@Egyptmedia28]

Which one best and which expensive than other

[@jackielau2076]

hot runner