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Getting one good liner into one plant is engineering. Getting the same liner into six plants and thirty suppliers, behaving identically in each, is programme management. We design for the second case from the very first drawing, because a liner that only works at the site where it was developed is a liner that will be redesigned five more times.
The starting point is the component, not the container. Cavity geometry is derived from the part datums and the handling sequence, so the liner remains valid even if one plant uses a different tote or a different rack. The container changes; the protection logic does not.
From there we build design families rather than one-off parts. A single cavity concept carries a set of variable dimensions, so sibling components share the same wall logic, the same density zoning and the same insert interfaces. A new part number in the family becomes a mould variant, not a new development project.
Consistency across sites is verified, not assumed. First-article liners are measured against the drawing and issued with a dimensional report, and production batches are sampled against that reference. When a German plant and a Mexican plant receive liners from the same tool, they receive the same numbers.
Change control is documented. Model-year updates arrive on a schedule, and each revision carries a version reference tied to the tool, the drawing and the packaging instruction. Old and new liners are visually distinguishable, so a mixed inventory at a supplier does not silently put last year's liner under this year's part.
Supplier harmonisation is where the savings appear. When Tier 1 and Tier 2 sites pack the same component in the same liner, containers move between them without repacking, and the part stays in one asset from the press line to the assembly station. Every transfer removed is a damage risk removed.
Density selection is set once for the programme. Where transport legs differ in length between regions, we can specify a heavier grade for long sea routes and a lighter one for regional trucking within the same cavity design, so the liner geometry stays common while the cushioning matches local conditions.
Tooling can be duplicated for regional supply. A proven mould design can be replicated at a second production site, letting liners be made closer to the plant that consumes them without re-engineering the part. The duplicate is built to the same drawing and validated to the same report.
Each programme ships with a documentation set: liner drawings, load plans, stacking rules and packing instructions, issued in the languages your plants actually work in. That package is what allows a new site to adopt the standard without a support visit.
Send us the component list for a platform and the sites that will pack it, and we will propose a design family with a single cavity logic and the variants each site needs.
