Blow Molding & Hollow Plastic Products worked example

Resin Cost per Bottle at 72% resin cost allocation share: a worked example

This worked example runs the resin cost per bottle numbers for a tougher week than the baseline: 72% resin cost allocation share instead of the typical 100%. Estimate resin cost for blow molded bottles or containers from bottle count, resin cost per bottle, allocation share, and fixed resin handling adders.

The inputs for this scenario

  • Bottles or containers in production run: 50,000 units (held at the documented default)
  • Resin cost per bottle: 0.08 $ / unit (held at the documented default)
  • Resin cost allocation share: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed resin handling and purge cost: 450 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Allocated variable resin cost = bottles or containers in run × resin cost per bottle × resin cost allocation share.
  • Total bottle resin cost works out to 3,402 $ at these inputs, and this is the headline figure for the scenario.
  • Resin cost per bottle works out to 0.07 $ / bottle at these inputs.
  • Allocated variable resin cost works out to 2,952 $ at these inputs.
  • Fixed resin handling cost works out to 450 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where resin cost allocation share sits at 100% and the headline result is 4,550 $, this scenario comes in 25.23% below the baseline at 3,402 $.
  • Use it when quoting a new bottle program, allocating a bulk resin lot across multiple jobs, or checking whether actual resin spend on a completed run matches the estimate. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total bottle resin cost: 3,402 $ (headline result)
  • Resin cost per bottle: 0.07 $ / bottle
  • Allocated variable resin cost: 2,952 $
  • Fixed resin handling cost: 450 $

Run it with your numbers

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

Last reviewed 2026-05-12.