Packs de glace sec pour expédier des articles périssables: 2025 Guide

If you need shipments to arrive frozen and compliant, dry ice packs for shipping perishable items are still the gold standard. Dry ice sits at −78.5 °C and, sized correctly, holds frozen temps for 24–96 hours without meltwater. Use 5–10 lb per 24 hours as your baseline, then adjust for insulation and season. This guide gives you exact math, Étiquettes UN1845, and when to switch to −20 °C PCMs to protect sensitive goods.

• Right‑size coolant: apply the 5–10 lb/day rule for dry ice packs for shipping perishable items with a simple buffer.

• Pack and label correctly: UN1845, kilogrammes nets, ventilation, and acceptance checklists that slash counter rejections.

• Pick the right tech: when −20 °C PCMs or VIP shippers beat dry ice packs for shipping perishable items on long lanes.

• Stay current in 2025: USPS ≤ 5 lb rules, IATA acceptance updates, and FSMA 204 timing signals.

Combien dry ice packs for shipping perishable items Avez-vous besoin?

Réponse courte: plan 5–10 lb of dry ice per 24 hours in a well‑insulated shipper; ajouter +20–30% for heat or handling. Blocks extend hold; pellets pull down fast. Mark the kilogrammes nets sur le carton extérieur.

Pourquoi ça marche: Typical sublimation lands near 10 lb/day in common EPS liners. VIP shippers cut that draw and stretch runs to 72–120 hours. Start temp matters: rock‑solid frozen items need less than slushy loads. When lanes are hot or see door‑to‑van hops, increase your margin. Use mixed formats—block as the “battery,” pellets as the “turbo.”

Dry ice packout calculator (frozen payload, règle rapide)

Formule:
Dry ice (lb) = (Transit days × 5–10) × 1.2–1.3
Choisir 5 for VIP/short routes; 10 for EPS in summer. Weigh after packout and write net kg on the box.

Field‑proven pointers that save pounds

• Pre‑chill the liner for 10–15 min with a small piece of dry ice.

• Block at bottom, pellets around/top, payload in the middle.

• Tight void fill (paper/foam corners) to stop convective leaks.

• Write net kg clearly—carriers check this at acceptance.

Vraie cas: A bakery shipped 12 frozen pies (~14 kg) in a 22 L EPS with 16 lb block+pellet over a 50‑hour lane in July. Arrival stayed below 0 °F with ~2 lb dry ice left after they pre‑chilled the liner and filled voids—then saved ~3 lb on the next run with a thicker top panel.

How do you pack and label dry ice packs for shipping perishable items?

Faites ça à chaque fois: vent the package, freeze payload solid, layer block → payload → pellets, remplir les vides, et mark “Dry Ice” or “Carbon Dioxide, solide,»Et1845, et net kg on the outer face; add Class 9 if required by operator/size. Many air shipments can use the IATA Dry Ice Acceptance Checklist rather than a full Shipper’s Declaration.

Air vs. ground vs. mail:

• Air cargo (Voici pi 954): mark UN 1845 + Kg net; operators may require weight disclosure at booking. Passengers are limited to 2.5 kg in baggage—don’t confuse that with freight.

• Sol (many UPS lanes): treat like standard parcel but keep all safety/marking best practices.

• USPS (NOUS. air domestique): ≤ 5 kg par courrier; international prohibited; packaging must vent.

Labeling checklist (printable sequence)

1. Rigide, insulated shipper (EPS/VIP) que vents CO₂—never airtight.

2. Weigh dry ice after packout; record net kg.

3. Write «Glace sèche» / «Dioxyde de carbone, solide,»Et1845, Kg net on a single face.

4. Appliquer Classe9 label if required by mode/operator.

5. Pour l'air, include UN 1845 + net kg on the air waybill and attach the acceptance checklist if used.

When should you choose PCMs over dry ice packs for shipping perishable items?

Use −20 °C PCMs when the payload must stay frozen without ultracold surface shock (Par exemple, delicate pastries, glazed seafood), or when you want reusable, hazmat‑free handling. Place a thin PCM layer next to the product and dry ice outside it for endurance. Packs de gel (0 ° C) are best for “cold, not frozen” livraisons.

Hybrid setups that lower risk and weight

• Aliments surgelés, hot summer: thin −20 °C PCM hugging the payload; dry ice around/top to extend hold.

• Long 3‑day lane: Expéditeur VIP + thin PCM layer reduces total dry ice and DIM weight.

• Fragile biologics: PCM around vials to buffer spikes; dry ice in voids.
  Vendors offer −23 °C PCMs and families from −40 °C to +37 °C for precise control.

What changed in 2025 for dry ice packs for shipping perishable items?

Acceptance got faster and stricter. Carriers and IATA emphasize checklist‑based acceptance: matching marks (Et1845, nom propre, Kg net), correct Class 9 placement, and air waybill entries. USPS limits are unchanged (≤ 5 lb domestic air; international prohibited). In parallel, FDA a proposé extending FSMA 204 compliance by ~30 months—use the time to digitalize traceability.

2025 trends for dry ice packs for shipping perishable items

What’s hot now (Mis à jour: August 2025):

• VIP + −20 °C PCM adoption to extend lanes to ~120 h with less refrigerant mass.

• Booking‑time net‑kg checks for aircraft CO₂ ventilation planning; weigh precisely.

• Reusable –96 °C data loggers becoming routine for frozen food, not just pharma.

Instantané

• Carrier job aids reduce rejections by standardizing label placement and kilogram marking.

• Emballages hybrides cut surface freeze damage while lowering ice mass.

• CO₂ markets stay seasonally tight—dual‑source for Q4 peaks.

Quick “Packout Picker” (interactive checklist you can use)

• Résultat:

  • Garder frozen hard → start with dry ice packs for shipping perishable items.

  • Garder congelé, avoid surface frost → −20 °C PCM snug to product + dry ice outside.

  • Garder froid, pas gelé → 0 °C gel packs.

• Transit time:

  • 24 H: 5–8 lb dry ice or 1–2 −20 ° C Panels PCM

  • 48 H: 10–16 lb ou 3–4 panneaux

  • 72 H: 18–26 lb ou VIP + 4–6 panneaux

  • 96 H: 26–40 lb with VIP or VIP + PCM hybrid

FAQ

How many dry ice packs for shipping perishable items do I need for 48 hours?
Plan 10–16 lb, puis ajouter 20–30% for season and handling. VIP reduces mass; EPS needs more.

Ai-je besoin d'une déclaration de l'expéditeur pour la glace sèche?
Souvent Non when used only as a refrigerant with non‑DG cargo, but you doit marque Et1845 + Kg net and apply Classe9 as required. Les variations de l'opérateur s'appliquent.

Can I mail dry‑ice‑cooled food with USPS?
Oui domestically with ventilation; ≤5lb per air mailpiece. International is prohibited.

Should dry ice go on top or bottom?
Lieu around and on top so cold sinks over the payload. Fill voids to avoid hot spots.

Résumé & étapes suivantes

Principaux à retenir: Dry ice packs for shipping perishable items work best when you évacuer la boîte, taille 5–10 lb / jour avec un 20–30% de tampon, et mark UN 1845 + Kg net. Utiliser blocks for reserve, Pellets pour la suppression, et VIP/−20 °C PCMs for long or sensitive lanes.

Plan d'action (aujourd'hui):

1. Choisir le liquide de refroidissement (glace carbonique / −20 ° C PCM / gel) par arrival temp.

2. Calculate with the 24/48/72/96 h bands; add buffer.

3. Pack to vent, weigh, et write net kg; appliquer Et1845 / Classe9 if required.

4. Attach acceptance checklist et log temps; refine the spec on your next run.

À propos du tempk

We design validated, lane‑specific packouts across EPS/VIP shippers, dry ice packs for shipping perishable items, and −20 °C PCMs. Our templates pair carrier‑compliant labels with clean SOPs to cut excursions and acceptance delays, soutenu par –80/–96 °C logger traces for proof. Typical results: des délais plus longs, fewer relabels, and lower DIM weight.

CTA: Share your inside box size, poids de charge utile, and transit hours—get a tested coolant mass, packout diagram, and label checklist you can deploy this week.