Run the coolant estimate
Use payload weight, box size, route time, and seasonal temperature before finalizing gel pack or PCM mass.
Fresh chilled fillets
Salmon Fillets Cold Chain Packaging Solution
Salmon fillets need a cold route that protects texture, color, and carton cleanliness. The packout should hold the fillet close to ice temperature, separate coolant from the fish pack, absorb purge, and avoid pressure marks from frozen gel packs or heavy top loads.
Temperature intentPlan around 0-2 C for quality-sensitive chilled salmon, while meeting the shipper's food safety program and destination rules.
Moisture controlUse liner and absorbent layers so leakage or condensation does not reach the outer carton.
Coolant ruleDo not place frozen gel packs directly against exposed trays or vacuum packs. Direct cold contact can create freeze marks, gaping, or texture loss.
Validation checkConfirm product temperature, package condition, coolant position, and receiving quality together.
Choose the packout by route condition
The coolant amounts below are starting ranges for planning. Final packout should be validated with the exact payload, insulation size, carrier lane, and season.
| Route condition | Temperature intent | Tempk packaging setup | Coolant planning range | Coolant position |
|---|---|---|---|---|
| Retail sample or local delivery, 8-18 h | 0-2 C chilled | EPP box or insulated carton, sealed liner, absorbent pad, tray or vacuum pack. | 0.6-1.2 kg conditioned gel packs or 0 C PCM for 1-3 kg payload. | Side and perimeter coolant with a divider; keep the top layer light to avoid fillet pressure. |
| Overnight seafood parcel, 18-36 h | 0-2 C with limited warm dwell | Thicker insulation, inner liner, absorbent layer, logger in product air space. | 1.2-2.2 kg gel packs or PCM for 1-3 kg payload. | Top and side coolant separated from product; leave a small air path around the product chamber. |
| Hot weather or delay risk, 36-48 h | Validated chilled lane | Higher insulation, reduced headspace, double leak control, service-level check. | 2.2-3.8 kg gel packs or PCM for 1-3 kg payload. | Avoid direct contact. Consider smaller box volume, faster carrier service, or pre-qualified shipper size. |
For a tighter first estimate, use the Ice Pack Calculator and then compare coolant families in the Coolant & PCM Reference.
Packout sequence that protects product quality
Small layout changes can decide whether the receiver sees a clean chilled seafood parcel or a wet, pressured, partially frozen product.
1
Pre-cool the fish and packaging
Load salmon already chilled. Warm trays, liners, and cartons can consume coolant before the parcel leaves the origin.
2
Build a dry inner chamber
Use a leak liner plus absorbent pad so purge does not reach the outer carton or customer-facing label.
3
Separate coolant from the fillet pack
Place gel packs or PCM around the side wall and above the chamber only with a divider. Avoid heavy frozen packs pressing into fillet edges.
4
Check receiving quality
Record product temperature, drip level, odor, carton wet-out, label condition, and any freeze marks before changing coolant mass.
Common losses this packout is meant to prevent
Use these receiving checks when adjusting coolant quantity, insulation thickness, or internal separation.
Quality and packaging risks
- Gaping or soft texture from freeze contact or heavy top load.
- Wet shipper and returns caused by purge or melted ice leakage.
- Surface odor transfer when fish bags, liners, or absorbents are underspecified.
- Warm top layer when coolant is only placed under the product.
Tools, components, and related seafood routes
Use the product page for the packaging logic, then use the tools to size the first trial packout before a lane test.
Choose coolant behavior
Compare frozen gel packs, conditioned gel packs, and 0 C PCM so the product is cooled without direct freeze injury.
Check lane risk
Review lane time, pickup dwell, last-mile delay, and receiver process before launch.
Need a seafood packout checked before launch?
Share the seafood form, payload weight, box size, service level, origin temperature, lane season, and receiving window. Tempk can help compare insulation, coolant mass, placement, and validation steps.