Qual 24-Pacote de gelo seco de células Fits Your Container Best?
Escolhendo o direito 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, pacote, and handle dry ice sheets—no guesswork. A single 24-cell sheet typically cools 5–8 L of container space for 24 horas, 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 dry ice weight (5–10 lb/dia) Para faixas congeladas.
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Seguir safe packing and venting practices.
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Learn hybrid cooling strategies for cost efficiency.
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Aplicar 2025 tendências in smart packaging and eco-design.
How many 24-cell dry ice packs do you need?
Comece com 1 sheet per 5–8 L of internal volume for ~24 hours of hold time. Por um 20 L shipper, use three sheets; para 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 (refrigerado) | O que isso significa para você |
|---|---|---|---|
| 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 |
Regra rápida: Add one sheet for every extra 24 hours of shipping or every +10 °C ambient increase.
Fast sizing formula (for SOPs)
Exemplo:
UM 20 L insulated box on a 36 h route in summer:
20 L ÷ 7 ≈ 3 folhas + 1 (hot weather) = 4 total.
How does insulation affect your dry ice pack count?
Quanto melhor o isolamento, the fewer packs you need. EPS foam maintains cold longest, while cardboard liners need extra help.
| Tipo de contêiner | Insulation Rating | Recommended Dry Ice | Real-World Insight |
|---|---|---|---|
| EPS (Isopor) | Excelente | 5 Libra / 24 h | Ideal for biopharma & alimentos congelados |
| Plastic Crate | Bom | 6–7 lb. / 24 h | Works for DTC food delivery |
| Cardboard + Forro | Moderado | 8–9 lb / 24 h | Add 1–2 sheets for warm lanes |
Dica: 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), usar solid CO₂ dry ice measured by weight:
Fórmula:Dry Ice (lb) = Hold Days × 7.5 (lb/day) × (1 + 0.2 reserve)
Exemplo: 2 days × 7.5 = 15 Libra + 20% = 18 lb total.
| Tempo de espera | Tight EPS Shipper | Typical Cooler | Loose Cooler |
|---|---|---|---|
| 24 h | 5 Libra | 7.5 Libra | 10 Libra |
| 48 h | 10 Libra | 15 Libra | 20 Libra |
| 72 h | 15 Libra | 22.5 Libra | 30 Libra |
Use o lower end for dense EPS foam and the higher end for thinner boxes or hot climates.
When to use 24-cell sheets vs. CO₂ sólido
| Caso de uso | Best Refrigerant | Why It Works | Watch Out For |
|---|---|---|---|
| 0–8 °C chilled goods | 24-cell dry ice pack | Flexível, non-hazmat, reutilizável | Shorter hold time |
| ≤ −20 °C frozen lanes | CO₂ sólido (gelo seco) | Frio profundo, long duration | Requires labeling & ventilação |
| 36–60 h mixed loads | Hybrid setup | Combine sheets + small CO₂ slab | Needs training & Sop |
Caso do mundo real: 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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Hydrate fully in warm water until bubbles stop.
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Congelamento plano for 24–48 h at ≤ −18 °C.
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Pré-chill both product and shipper.
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Wrap & cap: line sides and top for 360° coverage.
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Vent properly—never seal solid CO₂ airtight.
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Use luvas to avoid frost burns.
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Label UN 1845 if any solid CO₂ is included.
Estudo de caso: 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 inteligente, sustentável, 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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Pacotes híbridos mix sheets + CO₂ slabs for cost-balanced performance.
Insight de mercado: Brands adopting seasonal validation logs have cut spoilage 30–60% while lowering material waste.
Perguntas frequentes
Q1: Is a 24-cell dry ice pack the same as solid dry ice?
Não. 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: Posso voar com gelo seco?
Sim-≤ 2.5 kg (5.5 Libra) per passenger with venting and UN 1845 marcação. Cargo follows Aqui está Pi 954 for higher limits.
Q4: Posso reutilizar pacotes de gelo seco?
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.
Resumo & Recomendações
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Usar 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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Usar 5–10 lb/dia of solid CO₂ for frozen lanes.
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Sempre ventilação, rótulo, e monitor temperatura.
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Validate every lane with a two-box PQ test.
Próximo passo: Measure your container, apply the formula, and test one shipment. For precise results, request a free packout review from Tempk’s specialists.
Sobre Tempk
Tempk engineers 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, farmacêutico, and biotech logistics. Nós nos concentramos desempenho, segurança, e sustentabilidade, helping clients reduce spoilage and cost while meeting all IATA PI 954 and UN 1845 requisitos.
Fale conosco for a lane-specific dry ice strategy or a print-ready SOP today.
