Injection Molding Cycle

More about: Injection Molding Cycle

What it calculates

The “Injection Molding Cycle” calculator computes Cycle time in s from 7 parameters: wall thickness (mm), plastic thermal diffusivity (mm²/s), melt temperature (°C), mold temperature (°C), ejection temperature (°C), injection and holding pressure time (s), mold open, eject, close (s).

Applied in business management, unit economics, and financial modeling.

Example calculation

With parameters Wall thickness = 2 mm, Plastic thermal diffusivity = 0.09 mm²/s, Melt temperature = 230 °C, Mold temperature = 50 °C, Ejection temperature = 90 °C, Injection and holding pressure time = 3 s, Mold open, eject, close = 4 s the result is 14.86 s (Thermal diffusivity: PP ≈ 0.07–0.09, ABS ≈ 0.09–0.11, PA ≈ 0.10 mm²/s).

How to use

1. Enter wall thickness, plastic thermal diffusivity, melt temperature, mold temperature, ejection temperature, injection and holding pressure time and mold open, eject, close — each field above is adjustable with a slider.
2. Cycle time (s) is calculated automatically as you type.
3. Check the worked example below to see the formula applied to real numbers.
4. Copy the result or bookmark this calculator.

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