Lequel 24-Pack de glace sèche cellulaire Fits Your Container Best?
Choisir le droit 24-cell dry ice pack can make or break your shipment’s success. Within the first few minutes of reading, you’ll know exactly how to size, paquet, and handle dry ice sheets—no guesswork. A single 24-cell sheet typically cools 5–8 L of container space for 24 heures, but proper planning can double that duration while reducing waste and ensuring safety.
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Identify the best dry ice pack size and number of 24-cell sheets for any container.
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Estimate poids de glace sèche (5–10 lb / jour) pour les voies surgelées.
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Suivre safe packing and venting pratiques.
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Learn hybrid cooling strategies for cost efficiency.
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Appliquer 2025 tendances in smart packaging and eco-design.
How many 24-cell dry ice packs do you need?
Commencer par 1 sheet per 5–8 L of internal volume for ~24 hours of hold time. Pour un 20 L expéditeur, use three sheets; pour 30 L, four sheets. Each sheet delivers roughly 8–12 hours of chilled performance—extend by wrapping around the payload or combining with solid CO₂.
| Container Volume (L) | Starting Sheets | Typical Hold (glacé) | Ce que cela signifie pour vous |
|---|---|---|---|
| 5–10 | 1 | 8–24 h | Small mailers or compact boxes |
| 15–20 | 2–3 | 24–48 h | Most DTC food or pharma parcels |
| 25–30 | 3–4 | 36–60 h | Large payloads needing extra margin |
| 40+ | 4–6 | 48–72 h | Extended lanes or high ambient routes |
Règle rapide: Add one sheet for every extra 24 hours of shipping or every +10 °C ambient increase.
Fast sizing formula (for SOPs)
Exemple:
UN 20 L insulated box on a 36 h route in summer:
20 L ÷ 7 ≈ 3 feuilles + 1 (hot weather) = 4 total.
How does insulation affect your dry ice pack count?
Meilleure est l'isolation, the fewer packs you need. EPS foam maintains cold longest, while cardboard liners need extra help.
| Type de conteneur | Insulation Rating | Recommended Dry Ice | Real-World Insight |
|---|---|---|---|
| PSE (Mousse de polystyrène) | Excellent | 5 kg / 24 h | Ideal for biopharma & aliments surgelés |
| Plastic Crate | Bien | 6–7 lb / 24 h | Works for DTC food delivery |
| Carton + Doublure | Modéré | 8–9 lb / 24 h | Add 1–2 sheets for warm lanes |
Conseil: Pre-chill your box before packing. Cold walls keep sheets efficient.
How to calculate dry ice weight for frozen shipments
For frozen lanes (−20 °C or colder), utiliser glace sec solide measured by weight:
Formule:Dry Ice (lb) = Hold Days × 7.5 (lb/day) × (1 + 0.2 reserve)
Exemple: 2 days × 7.5 = 15 kg + 20% = 18 lb total.
| Tenir le temps | Tight EPS Shipper | Typical Cooler | Loose Cooler |
|---|---|---|---|
| 24 h | 5 kg | 7.5 kg | 10 kg |
| 48 h | 10 kg | 15 kg | 20 kg |
| 72 h | 15 kg | 22.5 kg | 30 kg |
Utiliser le lower end for dense EPS foam and the higher end for thinner boxes or hot climates.
When to use 24-cell sheets vs. co₂ solide
| Cas d'utilisation | Best Refrigerant | Pourquoi ça marche | Watch Out For |
|---|---|---|---|
| 0–8 °C chilled goods | 24-cell dry ice pack | Flexible, Non-hazmat, réutilisable | Shorter hold time |
| ≤ −20 °C frozen lanes | Co₂ solide (glace carbonique) | Deep cold, long duration | Requires labeling & ventilation |
| 36–60 h mixed loads | Hybrid setup | Combine sheets + small CO₂ slab | Needs training & AMADOUER |
Cas réel: A biotech shipper swapped block ice for 24-cell sheets in EPS boxes and cut spoilage 22% while reducing packing time 40%.
Safe packing SOP for 24-cell dry ice sheets
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Hydrater complètement in warm water until bubbles stop.
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Congeler à plat for 24–48 h at ≤ −18 °C.
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Préfabriqué both product and shipper.
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Envelopper & capuchon: line sides and top for 360° coverage.
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Vent properly—never seal solid CO₂ airtight.
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Portez des gants to avoid frost burns.
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Label UN 1845 if any solid CO₂ is included.
Étude de cas: A meal-kit brand reduced summer warm-arrival issues by one-third after adopting wrap-and-cap packing.
2025 trends in dry ice packaging
The cold chain industry is embracing intelligent, durable, and hybrid designs:
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Reusable cut-to-fit sheets reduce waste and trim along seams.
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Precision sublimation control improves CO₂ efficiency (3–8% loss/day).
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Smart temperature sensors send alerts for temperature excursions.
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Emballages hybrides mix sheets + CO₂ slabs for cost-balanced performance.
Perspicacité du marché: Brands adopting seasonal validation logs have cut spoilage 30–60% while lowering material waste.
FAQ
Q1: Is a 24-cell dry ice pack the same as solid dry ice?
Non. 24-cell packs are polymer sheets cooling near 0 °C; solid CO₂ reaches −78.5 °C.
Q2: How long does one 24-cell sheet last?
Around 8–12 hours per sheet; wrap with 2–4 sheets for 24–36 hours.
Q3: Can I fly with dry ice?
Oui-≤ 2.5 kg (5.5 kg) per passenger with venting and UN 1845 marquage. Cargo follows Voici pi 954 for higher limits.
Q4: Puis-je réutiliser les packs de glace sec?
Hydrated polymer packs can be refrozen; solid CO₂ cannot—it sublimates to gas.
Q5: What’s the safe way to dispose of leftover dry ice?
Let it sublimate in a ventilated area—never seal or dump in sinks.
Résumé & recommandations
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Utiliser one 24-cell sheet per 5–8 L of volume for 24 h chilled control.
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Add 30–40% for longer or hotter shipments.
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Utiliser 5–10 lb / jour of solid CO₂ for frozen lanes.
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Always secouer, étiquette, et moniteur température.
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Validate every lane with a two-box PQ test.
Prochaine étape: Measure your container, apply the formula, and test one shipment. For precise results, request a free packout review from Tempk’s specialists.
À propos du tempk
Ingénieurs du tempk validated cold chain solutions—from flexible 24-cell dry ice sheets to hybrid CO₂ packouts. Our systems are tested for real-world lanes across food, Pharma, and biotech logistics. We focus on performance, sécurité, et durabilité, helping clients reduce spoilage and cost while meeting all IATA PI 954 and UN 1845 exigences.
Parler avec nous for a lane-specific dry ice strategy or a print-ready SOP today.
