Produce buyers and packers ask the same question every harvest season: should we ship in single-use cardboard boxes or invest in returnable plastic crates? Both get produce from field to retail, but on a per-trip cost basis and across cold chain handling, the numbers diverge quickly. This guide compares the two head-to-head so export packers and fresh produce importers can choose the right format for their route.
1. Cost per trip: cardboard looks cheap, plastic wins on the third load
Cardboard boxes typically cost less per unit on the first purchase (around $1-3 for a one-way corrugated box vs $8-25 for a returnable plastic crate), but they are single use. A standard returnable plastic crate, designed for 50-100+ round trips and rated for HDPE racking loads up to 500kg static, costs roughly the same per trip after 4-6 reuses.
For a typical farm-to-distributor route, plastic reaches the break-even point around trip five, with savings mounting on every trip after that. For a frozen fruit exporter or seafood packing house running 20+ trips per season, the lifetime saving on one plastic crate easily exceeds 10x its first-cost over cardboard.
2. Moisture, humidity and the cold chain
This is where cardboard fails most often. A 40HQ container moves through humidity levels from 30% (cold storage) to 95% (reefer operating). Cardboard absorbs water, loses 50-70% of stacking strength when wet, and accelerates spoilage by trapping moisture against the fruit.
Plastic produce crates with a ventilated sidewall (typically 8-12 slot openings per side, LSY slots visible in image above) keep air flowing around the contents. They can be pressure-washed, sanitised between loads and reused without compromising stacking integrity. For leafy greens, berries, citrus and seafood, this difference alone justifies the switch.
3. Stacking, FCL loading and reverse logistics
Cardboard stacks as high as it stacks — typically 5-6 boxes high in a 40HQ before crushing risk. Plastic crates stack to 8-10 high with the same footprint, with rims that interlock to lock stacks together. That means 30-50% more payload per FCL with the same number of crates, or 30-50% fewer crates for the same payload.
For the reverse trip, plastic crates nest or fold flat (collapsible models like the 600×400 series collapse to 1/3 their height), so empty crates back-haul cheaply. Cardboard doesn’t come back; it becomes waste at destination.
4. Which to choose: a decision table
| Factor | Cardboard box | Returnable plastic crate |
|---|---|---|
| First-cost per unit | $1-3 | $8-25 |
| Reuses before failure | 1 (single trip) | 50-100+ trips |
| Break-even on per-trip cost | — | Trip 5-6 |
| Cold chain moisture | Absorbs water, loses stack strength | Washable, ventilation holes |
| Stacking height in 40HQ | 5-6 boxes | 8-10 crates |
| Reverse logistics | Waste at destination | Collapsible / stack-nest return |
| Sustainability footprint (5 years) | 5 tons box waste | 1 crate, recycled at end of life |
For the full produce crate lineup including ventilated, stackable and collapsible options, see the industrial crates hub. For pallet matching in your FCL, see the layer pad guide.
5. When cardboard still wins
Cardboard makes sense for short hop, low-frequency routes — direct-to-consumer fruit boxes, gift packs, single trip promotional shipments, or where the buyer cannot guarantee crate return. For seasonal crops like Christmas stone fruit or one-off tropical shipments, the cardboard route can be the right answer.
For everything else — high-frequency shipping, long export lanes, cold chain, sustainability KPIs (carbon per trip, waste per ton) — returnable plastic crates are the lower total cost option. Talk to an LSY planner (WhatsApp +86 19311059570) with your route, cargo volume and reusable logistics plan; we can match the right crate dimensions and confirm FCL packing density for your destination.
Looking for plastic crates and turnover boxes? Explore our Turnover Box Series range — injection molded in our own factory with 35+ years of experience.
Frequently asked questions
Can I order samples?
Samples are available at cost price — please contact our export team with your target product mix and route.
What is the MOQ for overseas buyers?
Overseas orders ship in full container loads (FCL), so the minimum is one 20FT or 40HQ.
Do you offer pallet + crate matching for FCL?
Yes. Pair our standard ISO pallets (1200×1000, 1200×800) with stackable or collapsible produce crates; we can confirm stacking density and total payloads for your reefer container.
