Sweet cherry is Chile's most valuable fresh-fruit export and the Pacific Northwest's most export-dependent crop, and in both origins it moves in a few standardized boxes that must keep a perishable fruit cold, humid and uncrushed for two days by air or six weeks by sea. Five numbers on the buyer's desk this season touch the box directly.
| Fact | Figure | What it means for the box | Source |
|---|---|---|---|
| Chilean exports 2025/26 | About 114 million boxes (5 kg equivalents), down about 10 % from 126 million; about 98 million to China; China share 87 % (from 92 %), U.S. 4 % (from 3 %); 569,492 t | About 114 million 5 kg boxes and liners in a 12-week window; the 5 kg box is still the planning unit, but the U.S. and other markets need their own formats | Frutas de Chile via FreshPlaza, March 2026; USDA FAS, August 2026 |
| Chilean forecast 2026/27 | 727,000 t production (+16 %), 667,000 t exports, 80,000 ha planted (77,766 ha in 2025/26); Maule and O'Higgins hold more than 80 % of the acreage | Record volume returns; book box and liner capacity earlier than in 2025/26, when concentrated arrivals in China caused logistics problems | USDA FAS GAIN Stone Fruit Annual, Santiago, CI2026-0009, August 2026 |
| Sea transit Chile to China | Cherry Express direct services: 23 days against about 30 days standard; 32 nonstop services scheduled for 2025/26, double the 16 of the prior season | Box and liner are designed for 23 to 40 days at 0 °C and saturated humidity, not the 10 to 14 day life of a domestic carton | MercoPress, November 2025; Produce Report, September 2022 |
| Pacific Northwest exports | More than 30 % of the crop is exported, about 90 % of it by air; Canada and China each take about 3 million 20 lb cartons a year; shippers use 5 kg and 20 lb loose packs and gift boxes | The U.S. export box is an air box: low tare, fast cooling, repacked on arrival. The Chilean export box is a sea box. The specs are not interchangeable | The Packer, September 2022 (Northwest Cherry Growers) |
| Storage recommendation | −0.5 ± 0.5 °C (31 ± 1 °F), 90 to 95 % RH; respiration 3 to 5 mL CO₂/kg·h at 0 °C against 22 to 28 at 20 °C; CA/MAP window 3 to 10 % O₂ and 10 to 15 % CO₂ | Respiration rises steeply above 0 °C; the board sits for weeks at the humidity at which paper is weakest | UC Davis Postharvest, Cherry Produce Facts (Crisosto, Mitcham, Kader) |
Box-equivalent figures are simple arithmetic at 5 kg per box and ignore 2.5 kg and gift formats; read them as orders of magnitude. This page is packaging guidance, not customs or market advice.
Sizes come from Chilean exporter pack specifications, U.S. trade listings and our own drawings. The exact die line comes from your receiver's specification sheet; in China and Korea it is often dictated by the importer's pallet and cold-room racking.
| Format | Net weight | Outer dimensions | Typical market | Board and style |
|---|---|---|---|---|
| 5 kg bulk export box | 5 kg (11 lb) | 50 × 30 cm footprint, 10 to 12 cm high | China wholesale, Korea, Taiwan, U.S. importers of Chilean fruit (listed as 11 lb cartons) | Bottom and telescoping lid, B or C flute, moisture-resistant kraft or white-top liner, water-resistant glue; MAP or micro-perforated liner; 2 to 6 color flexo or up to 8 colors offset-laminated |
| 2.5 kg box | 2.5 kg | 40 × 30 or 50 × 30 cm footprint, 6 to 8 cm high | Asian supermarkets and e-commerce (the JJ-grade 2.5 kg retail box in China), Korea, U.S. club stores | Bottom and lid, E flute lid for print quality, B flute bottom; two boxes per 40 × 30 cm master |
| 2 kg and 1 kg gift and e-commerce cartons | 1 to 2.5 kg | Varies; sized so 4 to 6 cartons fill a 60 × 40 cm master | Chinese New Year gifting, online retail in China, Korea and Southeast Asia | Laminated or micro-flute (E or F), varnish or foil, carry handle; shipped in a 60 × 40 cm closed master |
| 20 lb loose lug | 20 lb (9.1 kg); California uses 18 lb | Receiver-specific; one-piece tray or Euro-style carton | U.S. and Canadian domestic trade, Northwest and California; repacked on arrival in export markets | Single-wall C flute tray, moisture-resistant kraft; row-size and variety printed; often bagged in a single liner |
| 15 to 18 lb retail-pack cartons | 16 lb (8 × 2 lb or 16 × 1 lb clamshells; 4 × 4 lb clamshells), 18 lb (8 × 2.25 lb or 12 × 1.5 lb bags), 15 lb (12 × 1.25 lb bags, Rainier), 24 lb (12 × 2 lb bags) | Euro carton footprint matching the 48 × 40 in pallet | U.S. and Canadian retail; Northwest and California | Euro-style tray with display panel, B or C flute; clamshells in PET or rPET, pouch bags in micro-perforated PE or PP |
| Retail clamshell and pouch | 1 lb, 2 lb, 4 lb clamshells; 1.25 to 2.25 lb pouches; 500 g to 1 kg in Asia | Set by the master carton grid | Supermarket shelf and online grocery | Thermoformed clamshell or stand-up pouch; see our clamshells and zipper and pouch bags pages |
U.S. pack weights and clamshell counts: Produce Market Guide listings (Chilean cherries appear there as 11 lb cartons). Asian dimensions: Chilean exporter practice as compiled on our Spanish cherry page. The 2 kg and 1 kg master arithmetic is our planning note, not a trade standard. The two-box 40 × 30 cm master is in the pallet table below.
Cherries are a low-density load: a 40 ft reefer of 5 kg boxes carries 12.8 to 14.4 t of fruit, so the container fills by volume and load height, not weight. Eight 50 × 30 cm boxes tile a 1200 × 1000 mm pallet exactly; the same 8-per-layer pattern tiles a 48 × 40 in (1219 × 1016 mm) pallet, four boxes along the long side and two along the short side, which is why Chilean boxes repack cleanly in U.S. distribution centers.
| Format | Boxes per layer | Layers | Boxes per pallet | Fruit per pallet | Per 40 ft HC reefer (20 pallets) |
|---|---|---|---|---|---|
| 5 kg, 50 × 30 × 11 cm | 8 (1200 × 1000 mm or 48 × 40 in) | 16 to 18 | 128 to 144 | 640 to 720 kg | 2,560 to 2,880 boxes; 12.8 to 14.4 t |
| 2.5 kg, 40 × 30 × 7 cm | 10 | 26 to 28 | 260 to 280 | 650 to 700 kg | 5,200 to 5,600 boxes; 13 to 14 t |
| 2.5 kg master, 40 × 30 × 14 cm (2 boxes) | 10 masters | 13 to 14 | 130 to 140 masters (260 to 280 boxes) | 650 to 700 kg | 2,600 to 2,800 masters; 13 to 14 t |
Load height 2.0 to 2.1 m; reserve 2 to 3 cm for the top cap and corner grid and plan 7 to 14 horizontal straps per pallet. Air freight is booked by ULD and chargeable weight; the box count per ULD depends on the airline's container, so ask the forwarder for the ULD contour before fixing the box height. Counts are Fuxing planning estimates to be checked against the final box drawing. Stacking rules for PP corrugated plastic harvest lugs are in the PP box palletization and assembly guide.
The export cherry box is the hardest service a produce carton sees. Fruit is hydrocooled in 0 to 1 °C water, so the board starts wet. It is then held at −0.5 ± 0.5 °C and 90 to 95 % relative humidity, with a MAP liner that keeps the inside of the box near 100 % humidity, for 23 days on a direct Chile-to-China service and up to 40 days with transshipment. Paper loses compression strength as it takes up water: Fibre Box Association factors put the loss at 32 % at 80 % RH, and a saturated box can lose up to half its dry value. Compare suppliers on box compression after 24 hours of conditioning at 90 % RH with the final pallet height and a safety factor for the voyage, not on the dry BCT on the quotation.
| Condition | Value | Sea (Chile to Asia) vs air (Northwest, early Chilean fruit) | Board and box requirement |
|---|---|---|---|
| Hydrocooling | 0 to 1 °C water, before or after packing | Standard in both | Water-resistant adhesive, moisture-resistant or wet-strength liners; PP corrugated plastic trays for repeated use |
| Temperature | −0.5 ± 0.5 °C (31 ± 1 °F) | Reefer set point 0 °C with CA or MAP; air: pre-cooled, insulated ULD cover | Adhesive and print must not crack or delaminate at −1 °C |
| Relative humidity | 90 to 95 % in the room; near 100 % inside a MAP liner | Sea: 23 to 40 days exposure; air: days | Specify BCT after 24 h at 90 % RH, with a stacking factor for 16 to 18 layers of 5 kg |
| Transit time | Cherry Express 23 days; standard routing about 30; up to 40 with transshipment | Sea carries most Chilean fruit (about 18,500 forty-foot containers to China planned for 2022/23); about 90 % of Northwest exports fly | Sea: double-wall or heavy C flute bottom, telescoping lid, MAP liner. Air: single-wall, low tare, micro-perforated liner |
| Respiration | 3 to 5 mL CO₂/kg·h at 0 °C; 15 to 17 at 10 °C; 22 to 28 at 20 °C | Sea: liner permeability set for 0 °C; air: open or micro-perforated liner | The liner manages gas; the box must not pinch the gusset or trap condensation against the board |
| Compression | 16 to 18 layers, 640 to 720 kg fruit plus board; sometimes double-stacked in the importer's cold room | Sea: full voyage; air: hours | Corner posts or a PP corrugated plastic grid in the master; vents aligned layer to layer; no pallet overhang |
Source: UC Davis Postharvest (temperature, humidity, respiration); MercoPress, 2025 and Produce Report, 2022 (transit); Fibre Box Association factor as cited by R. Popil, Georgia Tech, 2019 (humidity strength). Box grades are Fuxing engineering practice; test methods are in the produce export packaging guide.
The liner decides shelf life more than the box does. A modified-atmosphere (MAP) liner is a heat-sealed bag whose film permeability is matched to the fruit's respiration at 0 °C, so the cherries pull oxygen down and push carbon dioxide up to a steady state. A micro-perforated liner is laser-perforated film that holds humidity and stops stem drying but stays near normal air. Materials, microns and perforation counts are in our cherry MAP bags guide; the decision logic is below.
| Point | MAP liner (heat-sealed) | Micro-perforated liner |
|---|---|---|
| Atmosphere reached | WSU trials: about 15 % O₂ and 5 % CO₂; UC Davis safe window 3 to 10 % O₂ and 10 to 15 % CO₂ | Near ambient air; humidity retention only |
| Risk limits | Below 1 % O₂: skin pitting and off-flavors; above 30 % CO₂: brown skin and off-flavors (UC Davis) | No gas risk; stem browning and weight loss arrive sooner |
| Transit it is designed for | 30 to 45 days by sea; WSU recorded better stem color, higher firmness and lower weight loss than regular air | Air freight and sea legs of up to about two weeks; domestic U.S. lugs |
| Closure and fittings | Heat seal on the packing line; gusset sized to the 50 × 30 or 40 × 30 cm box; absorbent pad under the fruit | Folded or taped closure, or heat seal; same gusset and pad |
| Cost and lead time | Higher; film is specified per variety and per box weight; order with the boxes | Lower; faster to produce; can fly in 5 to 7 days if the season starts early |
| Where it fails | Fruit loaded warm or liner sealed before the box is cold: gas drifts outside the window | Long sea voyages: stems brown and fruit softens before arrival |
Gas figures are from UC Davis Postharvest and WSU Tree Fruit (Bolaños and Torres, June 2026); the WSU trial stored fruit at 0.5 °C and more than 95 % RH after hydrocooling and assessed at 15, 30 and 45 days.
The export carton is a one-way package and should stay one: it is printed, every receiver accepts it, and it is lighter in the reefer. The loops that come back wet are where board is wasted and packers switch to plastic: the harvest lug, the hydrocooling tray, the staging bins where fruit waits for sizing, and the dividers or corner grids inside a paper master that must hold shape after hydrocooling. A foldable 4 to 5 mm PP corrugated plastic box does not absorb water, can be washed and disinfected, folds flat for the return truck and lasts several seasons. Sheet grades and sizes are on our PP corrugated plastic boxes page; the one-way export leg is covered on the corrugated cartons page.
Lead time for packaging shipped by sea: 1 to 2 weeks for drawings, samples and artwork approval, 3 to 4 weeks at the factory, 30 to 45 days by sea to San Antonio or Valparaíso (Chile) or a U.S. West Coast port, and about one week to the packhouse. Approve artwork 10 to 12 weeks before the first packing day and ask for the production and sailing schedule in writing with the quotation.
| Window | First packing | Confirm the order by | What to buy |
|---|---|---|---|
| Chile, early varieties (Royal Dawn, Brooks, Santina early blocks) | Late October to November | August | 5 kg box, micro-perforated liner for air, MAP liner for the first vessels, PP corrugated plastic harvest lugs |
| Chile, peak (Santina, Lapins, Regina) | December to mid-January; Hapag-Lloyd expected about 63 % of the 2022/23 season to ship in weeks 49 to 51 | October | 5 kg and 2.5 kg boxes with MAP liners, 40 × 30 masters, gift cartons for Chinese New Year (February 6, 2027) |
| Chile, season close | January to February | November | Replenishment of 5 kg boxes and liners; late-variety labels |
| Pacific Northwest and California | June to August | March | 20 lb and 18 lb lugs, 15 to 18 lb clamshell and pouch cartons, 5 kg air export boxes, gift boxes for Asia |
If the order is late there are two ways out: unprinted or single-color boxes in a standard die (2 to 3 weeks at the factory), or liner bags by air in 5 to 7 days while the boxes follow by sea. For the 2026/27 Chilean peak the October confirmation date is still open as this page is published.
| # | Tell the supplier | Why it matters |
|---|---|---|
| 1 | Format and net weight: 5 kg, 2.5 kg, 2 kg gift, 20 lb lug, 16 lb clamshell carton | Fixes footprint, pallet pattern and liner size |
| 2 | Outer and inner dimensions in mm, or the receiver's die line | A 10 mm height error changes the layer count |
| 3 | Box style: bottom and lid, open tray, RSC master, display panel | Sets blanks, gluing and lid tolerance |
| 4 | Flute and walls: B, C, E or BC double-wall; liner and medium basis weights if known | Sets the board combination and the price per thousand |
| 5 | Required BCT after 24 h at 90 % RH, or the pallet height and layers you stack | We size the board to the humid value, not the dry one |
| 6 | Hydrocooling: before packing, after packing, or none | Water-resistant adhesive and wet-strength liners, or PP corrugated plastic trays |
| 7 | Print: number of colors, flexo or offset-laminated, varnish, FSC or receiver logos, label panel | Artwork and plate lead time; 8-color laminated gift boxes take longest |
| 8 | Vents: percentage, position and whether they must align with the liner gusset | Cooling speed and compression are traded against each other |
| 9 | Liner: MAP or micro-perforated, variety, target transit days, absorbent pad yes or no | Liner film is specified per variety and transit and ordered with the box |
| 10 | Volume per season and in the peak week; first packing date | Schedules the factory and sailings; peak week sets the buffer stock |
| 11 | Destination port or packhouse and Incoterm (FOB, CIF, DAP) | Freight is quoted on flat volume; boxes, liners and PP lugs can share one container |
| 12 | Certifications and audits: ISO 9001, ISO 14001, FSC, SGS, receiver food-contact declarations | Lets your customer's QA sign off before samples ship |
Fuxing Group makes FSC corrugated cartons printed in up to 8 colors, MAP and micro-perforated liner bags, clamshells and pouch bags, and foldable PP corrugated plastic boxes in 2 to 10 mm sheet in Dongguan (China), Hai Phong (Vietnam) and Davao and Manila (Philippines), with ISO 9001, ISO 14001 and SGS verification. Send the 12-point checklist and your receiver's box drawing; we reply in English or Spanish within 12 hours with a drawing, a sample plan and a quotation stating basis weights, humid compression and liner film in writing, and consolidate boxes, liners and lugs to San Antonio, Valparaíso or your U.S. port.
Quote on WhatsApp Email jacky@fuxinggroup.cn