Blow Molding & Hollow Plastic Products worked example

Unit Manufacturing Cost at 72% manufacturing cost allocation share: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop manufacturing cost allocation share to 72%, then walk the calculation through step by step. Estimate unit manufacturing cost for blow molded bottles, containers, tanks, or hollow parts from production quantity, cost per unit, allocation share, and fixed manufacturing adders.

The inputs for this scenario

  • Good blow molded units: 50,000 units (held at the documented default)
  • Variable manufacturing cost per unit: 0.22 $ / unit (held at the documented default)
  • Manufacturing cost allocation share: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed tooling, setup, or overhead cost: 2,600 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Allocated variable manufacturing cost = good blow molded units × variable manufacturing cost per unit × manufacturing cost allocation share.
  • Total unit manufacturing cost works out to 10,340 $ at these inputs, and this is the headline figure for the scenario.
  • Manufacturing cost per unit works out to 0.21 $ / unit at these inputs.
  • Allocated variable manufacturing cost works out to 7,740 $ at these inputs.
  • Fixed tooling, setup, or overhead cost works out to 2,600 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where manufacturing cost allocation share sits at 100% and the headline result is 13,350 $, this scenario comes in 22.55% below the baseline at 10,340 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to manufacturing cost allocation share, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a single average variable cost per unit; multi-resin, multi-cavity or grade changes within a run will blur that average.

Results at a glance

  • Total unit manufacturing cost: 10,340 $ (headline result)
  • Manufacturing cost per unit: 0.21 $ / unit
  • Allocated variable manufacturing cost: 7,740 $
  • Fixed tooling, setup, or overhead cost: 2,600 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Unit Manufacturing Cost calculator, set manufacturing cost allocation share to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.