Why export packs are one way
Automotive packaging for ocean containers is generally one-way (expendable), because returning it costs too much. The same logic runs on any long lane. The longer the logistics leg, the less practical returnable packaging becomes, and spare parts shipped to service centers usually go one-way. A large corrugated maker sells expendable triple-wall for overseas automotive shipments in place of returnable plastic containers or metal racks.
For a supplier, that turns a returnable-container question into a corrugated question: which box, how heavy, and how many. Our answer is a used gaylord whose spec matches the pack it replaces, sized to the customer's packaging sheet.
Detroit's crossings
The Ambassador Bridge, opened in 1929, carries more than 25% of US-Canada merchandise trade by value and more than 10,000 trucks a day. The Gordie Howe International Bridge opened to traffic on July 27, 2026, linking I-75 with Ontario Highway 401. Its US port of entry is in Detroit's Delray neighborhood, in the Southwest Detroit area.
Cross-border parts do not always go one way, but many do. Parts to Canadian plants, service parts, prototypes and export lots are common candidates for an expendable pack. Check your customer's requirement on returnables before you pick.
Specs that matter on a long lane
| Question | Why it matters on a long lane | What to ask for |
|---|---|---|
| Moisture | Ocean containers sweat; corrugated loses about half its compression strength from 50% to 90% humidity | Grade A, dry, and a liner if the parts rust |
| Weight | Containers and trailers are weight-limited, and the box rating limits the stack | Wall count matched to loaded weight |
| Bottom | Rough handling concentrates load on the base | Full flap bottom for dense or sharp parts |
| Footprint | Container floor and pallet pattern fix the box | 48 x 40 or 48 x 45 in, per the sheet |
| Markings | Customer and carrier labels go on the wall | Clean walls, or tell us about print |
What to send
The footprint, the inside height, the wall count you need or the loaded weight, how many, and where it is going. If the pack is replacing a returnable, tell us the returnable's footprint and the standard pack quantity. See the pack spec checklist and the guide to boxes per trailer.
- Wikipedia, Ambassador Bridge
- Wikipedia, Gordie Howe International Bridge
- Automotive Logistics, ocean container packaging
- Macfarlane Packaging, how to pack automotive parts
- Packaging Corporation of America, heavy-duty parts packaging
- Paper Index Academy, corrugated and humidity