Is this the time for one mold cycle?

No. It is the time to complete the entire accepted bottle order. Measure seconds per mold cycle separately for equipment timing.

Should I divide by yield again?

No. The good running rate already counts accepted bottles. Applying another yield factor would count the same rejects twice.

Enter known mold changes, sanitation and planned breaks excluded from the running-rate measurement. Avoid a blanket percentage allowance.

Use it only for an explicitly theoretical schedule. A demonstrated rate from the same bottle, tooling and staffing is better for order commitments.

Blow Molding & Hollow Plastic Products calculator

Turn an accepted bottle order into scheduled machine hours. Use a demonstrated good running rate and add the known setup and planned stop time.

Schedule an accepted bottle order from a demonstrated good production rate and explicit setup time.

Good Bottles Required: Accepted bottle quantity on the production order.
Good Bottle Production Rate: Demonstrated accepted output per running hour.
Setup and Planned Stops: Separate changeover and planned stop time for this order.

The producer price index for plastic resins and materials stands at 280.569 (BLS, Aug 2026), up 6.6% from a year earlier. Quotes priced off last quarter's material cost miss this move.
The U.S. has 9,635 plastics product manufacturing establishments employing about 677,302 workers (Census County Business Patterns, 2023).

Is this the time for one mold cycle? No. It is the time to complete the entire accepted bottle order. Measure seconds per mold cycle separately for equipment timing.
Should I divide by yield again? No. The good running rate already counts accepted bottles. Applying another yield factor would count the same rejects twice.
What belongs in setup and planned stops? Enter known mold changes, sanitation and planned breaks excluded from the running-rate measurement. Avoid a blanket percentage allowance.
Can I use a nameplate bottles-per-hour rating? Use it only for an explicitly theoretical schedule. A demonstrated rate from the same bottle, tooling and staffing is better for order commitments.

Last reviewed 2026-10-12.