Blister forming and lidding material budget

Allocate forming and lidding materials separately before comparing complete blister packs.

Work through the task

  1. Use the real repeat, lanes and allocated web area for each material. Forming cavity area does not represent the complete purchased layout.
  2. Calculate forming and lidding consumption separately, with their own material specification and losses.
  3. Compare finished packs only when sealing, conversion and the component boundary match. Barrier and application qualification remain separate.

Tools for this job

A worked example

An illustrative net allocation of 0.01 m² forming web and 0.008 m² lidding per pack gives 100 m² forming and 80 m² lidding for 10,000 packs, before trim and losses. Different web allocations must not be averaged.

Use your supplier specification and quotation. These numbers demonstrate the arithmetic; they are not market prices or a packaging suitability assessment.

Checks before you decide

  • Separate forming and lidding allocations
  • Actual layout and loss convention
  • Component-only versus finished sealed pack