Grouped and Transport Packaging: Minimisation at Pallet Level

Transport packaging is where minimisation scales: a gram saved on a case is saved a million times, and a badly sized case writes its void onto every pallet, lorry and warehouse rack it touches. The levers at this level are the case assortment against the pallet footprint (modular sizing that tiles the pallet without overhang or void columns), film doses for shrink and stretch specified by containment testing rather than habit, and the tray-versus-case-versus-wrap format decision per product family. Article 24's ratio reaches this level directly - grouped and transport consignments are named in its scope - and Article 29's reuse tiers will progressively change what the level is made of.

This guide treats the level as a system, because its optimisations interact: case, pattern, wrap and vehicle cube are one equation.

Case footprints designed as fractions of the pallet (halves, quarters, eighths of the EUR or ISO footprint) tile without the void columns and overhangs that ad-hoc sizing guarantees. Overhang deserves its reputation: it is simultaneously wasted cube, a compression-strength destroyer (the overhung wall carries no stack load), and a damage generator. A modular case family, height-optimised per product, routinely recovers double-digit percentages of shipped volume before any material is touched - the purest minimisation there is, since the product and its protection are unchanged and only the air between cases is gone. The empty-space ratio at consignment level rewards exactly this: cases that fill their transport unit leave less space for the count to find.

Stretch and shrink films are traditionally dosed by turns and habit ('three rounds top, three bottom'). Containment-force testing converts the dose into an engineering specification: the load's stability requirement measured, the film and pattern that deliver it at minimum mass, pre-stretch settings audited on the machine rather than the dial. Downgauged high-performance films, correctly applied, routinely halve film mass per pallet at equal stability - the lightweighting ladder at pallet scale, with the same validation discipline. Record the specification (film, gauge, pattern, pre-stretch, containment force) per load family in the technical documentation; film is packaging, its grade and fee treatment follow, and 'the warehouse wraps it' is not a specification.

Retail-facing grouped packaging chooses among full cases, trays with film, film-only groupings and shelf-ready formats, each with a different material mass, a different retail labour story and a different damage profile. The minimisation argument must be made per family with the chain's real data - a tray-and-film format that halves material but doubles retail handling damage has minimised the wrong ledger. Shelf-ready and retail-ready formats add the display function to the criteria: their material earns its place through the Annex IV functionality and logistics criteria when the retail system genuinely works that way, and is decoration taxed as void when it does not.

Article 29's tiers will move a rising share of this level into reusable systems - crates, pallets, pooled assets - whose minimisation logic differs: the asset's mass is amortised over rotations, and the design questions become durability, foldability for the empty return leg and system loss rates. The reuse station owns the tiers; the minimisation point here is transitional: single-use transport specifications written now should avoid locking in formats the reuse tiers will strand, and consignment measurement should start including the reusable flows so the system's own numbers are known before its obligations scale. Design the single-use level lean, and the reusable level will inherit sane dimensions.

Beyond the pallet sits the vehicle, whose cube is the transport system's scarcest asset. Load planning that fills trailers by weight before volume leaves the minimisation work undone at the final multiplier; cube-out planning - case heights and pallet patterns chosen against the trailer's internal dimensions - converts the same packaging into fewer vehicles. The environmental and cost ledgers both price vehicles, not litres in the abstract, and a transport-packaging review that stops at the pallet has stopped one level short of the money. Include the trailer fill rate in the consignment dashboard; it is the number the finance director already believes in.