Clamping platen stationary

Clamps are usually built as horizontal units, with injection taking place through the center of the stationary platen, although vertical clamp presses are also available for special jobs. 

Whatever the variation, the clamp unit always features a stationary or fixed platen and a moving platen on which the mold halves are bolted or otherwise attached. The fixed platen is mounted rigidly on the machine base and is positioned adjacent to the nozzle of the injection unit. The injection half of the mold is attached to the fixed platen while the moving platen carries the ejection half of the mold. These terms may, in the case of some sophisticated molds, cease to be literally true, and the expressions fixed and moving mold halves are often used instead. 

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