How to Use Ice Packs for Shipping Frozen Food

Mis à jour: Août 29, 2025. Si vous avez besoin ice packs for shipping frozen food, this guide gives you a clear, field‑tested plan to keep products at or below 0°F through transit. You’ll learn which packs to use, how many to add, and how to pack for different routes and climates—so your frozen items arrive hard‑frozen, sûr, and customer‑ready. Key takeaways and formulas are included for fast decisions.

Best types: Glace sèche, gel, and PCM compared—when each keeps frozen food safest (en quart de travail: dry ice vs gel for shipping frozen food).
Pack‑out formulas: Exactly how many ice packs for shipping frozen food by weight and duration.
Leak‑free layouts: Step‑by‑step packing that limits air gaps and condensation (en quart de travail: how to pack ice packs for shipping frozen food).
Tendances & tools: 2025 eco options, sensors, and reusable PCM plates.
Compliance made easy: Étiquettes, ventilation, and customer handling notes.

Which ice packs for shipping frozen food work best in 2025?

Réponse courte: Glace sèche gives the coldest, longest freeze for multi‑day routes. PCM packs hold precise sub‑zero ranges and are reusable. Packs de gel are great for overnight or chilled ranges but cannot keep deep‑freeze for long. Aim for ≤0°F for frozen goods and choose the refrigerant that holds that target through your full transit window.

Why this matters to you: Frozen meat, fruit de mer, and ice cream lose quality fast when temps rise. For 1–2 days, high‑capacity gel or low‑temp PCM may work; for 2–5 days, PCM or dry ice is safer; for 3–7 days, dry ice dominates. These ranges reflect common pack performance in insulated shippers when used correctly.

Glace sèche vs. gel vs. PCM for frozen shipments

Glace sèche (co₂ solide) sits near −109°F and sublimates, so there’s no meltwater. Gel packs freeze around 32°F and drift to fridge range as they thaw. PCM packs are engineered to freeze at set points (Par exemple, −10°F to 32°F), giving stable hold times and high reusability. Pick the option that matches time, product sensitivity, and handling constraints.

Méthode de refroidissement	Freeze Point	Typical Duration	What it’s best for	What it solves for you
Glace sèche	~−109°F	3–7 days	Deep‑freeze items over long routes	Rock‑solid freeze, no liquid mess
PCM packs	Custom (Par exemple, −10°F)	2–5 jours	Precise sub‑zero control, réutilisable	Stable temps without hazmat handling
Packs de gel	32°F	1–2 jours	Overnight, chilled or lightly frozen	Simple, sûr, widely available

Conseils pratiques que vous pouvez utiliser aujourd'hui

Place cold on top: Gravity helps cold sink; top and side placement improves hold time.
Eliminate air: Remplir les vides; air accelerates warming.
Separate layers: Use a paper/card layer between product and dry ice.
Condition préalable: Freeze packs fully (and pre‑chill the shipper) before packing.

Cas réel: A meal‑kit brand cut warm‑arrival complaints by ~70% by adding a small dry‑ice slab above gel‑packed frozen foods for 2‑day routes in summer.

How to pack with ice packs for shipping frozen food (step‑by‑step)?

Direct steps: Pre‑freeze products and packs, line the shipper, layer packs below and above the load, remplir les vides, vent for dry ice, et label clearly. Done right, the same box can hold sub‑zero temps for the full transit window.

Pourquoi ça marche: Layering creates a cold “envelope” while insulation resists heat gain. Less trapped air means slower warming. Proper venting prevents pressure build‑up with dry ice. Labeling helps carriers and receivers handle boxes safely and fast.

How many ice packs for shipping frozen food?

Use this quick sizing rule and adjust after a test run:

1–2 jours: ~1–1.5 lb of ice packs per 1 lb of food (gel or low‑temp PCM).
3–5 jours: Step up to Plaques PCM or add dry ice; increase ratio to 2:1 or more.
5+ jours / hot lanes: Glace sèche, often 5–10 lb per medium cooler per 24–48 hours, plus gel as a buffer.

Pack‑out recipe	Cas d'utilisation	What to place where	Why it helps you
Single layer (gel)	Overnight	Gel bottom + côtés; produit; gel on top	Simple, light, stops minor thaw
Double layer (PCM)	2–4 days	PCM bottom/sides/top + tight fill	Stable sub‑zero for sensitive items
Hybrid (glace carbonique + gel)	2–5 jours	Dry ice top + côtés; gel cushions	Deep freeze + no leaks if gel softens
Heavy dry ice	5–7 days	More dry ice top/sides + vent holes	Long routes, hot weather resilience

Safety checklist (glace carbonique): Vent the shipper, marque «Glace sèche» with net weight, wear gloves, and keep dry ice off direct food contact.

Coût, durabilité, and compliance when using ice packs for shipping frozen food

Coût: Dry ice offers strong cooling per pound but must be replenished. Gel packs are reusable; inventory lives in your freezer. PCM plates cost more upfront but last many cycles and cut waste.
Durabilité: Choisir reusable PCM/gel, recyclable shells, and return programs.
Conformité & CX: Dry ice needs labels and venting; consumer boxes may prefer gel/PCM for easier handling notes.

Industry‑specific pack‑outs using ice packs for shipping frozen food

Local food brands (overnight): Thick liner + 2–3 large gel packs around frozen entrées; add top pack; prompt “freeze on arrival.”
Nationwide D2C (2–3 days): Hybrid: PCM or gel around sides, dry ice on top; tight void fill; add handling card.
Pharma & biotechnologie: Qualified shipper + validated PCM or dry ice load plan + data logger; follow lane mapping and SOPs.

2025 trends in ice packs for shipping frozen food

Quoi de neuf cette année: Companies are rolling out eco‑friendly, refillable gel packs, higher‑capacity PCM plates that hold sub‑zero for days, et smart sensors that log temperature from dock to door. Ensemble, these advances raise reliability while cutting single‑use plastics and spoilage.

Dernier progrès en un coup d'œil

Greener refrigerants: Biodegradable gels and recyclable shells reduce waste after delivery.
Reusable PCM: More cycles with less drift; many packs last 10+ usages with stable set‑points.
Smart monitoring: Petit, low‑cost loggers boost trust and reduce claims.

Perspicacité du marché: Demand from e‑grocery, kits de repas, and biologics keeps growing, pushing packaging toward better insulation, validated pack‑outs, and documented temperature assurance you can show customers.

FAQ

1) What are the best ice packs for shipping frozen food for 2–3 days?
Utiliser Plaques PCM near −10°F or a hybrid with dry ice on top and gel/PCM around the sides to hold sub‑zero temps.

2) Can gel packs alone keep items frozen?
Pour ≤24 hours, yes for dense, pre‑frozen loads in a thick liner. Beyond that, gel drifts to fridge range—add PCM or dry ice.

3) How many ice packs for shipping frozen food should I add in summer?
Increase your ratio to ≥2:1 (ice:food by weight) and add an extra top pack; verify with a test run on the hottest lane.

4) How do I prevent leaks and condensation?
Add a watertight liner with absorbent pads, separate layers, and fill all voids. Keep gel away from puncture risks.

5) Is dry ice safe for consumer shipments?
Oui-vent the shipper, étiquette «Glace sèche», and include a short handling note. Wear gloves when packing.

Résumé & recommendations

En bref: For dependable results, size your ice packs for shipping frozen food by route time and climate, layer packs above and around the load, remove air gaps, et label/vent pour la glace sèche. Gel is best for short routes; PCM extends sub‑zero holds; dry ice protects multi‑day lanes. Test once, standardize, then scale.

Étapes suivantes (do this now):

Map your lanes (hours in transit, hottest week).
Pick a pack‑out from the table and pre‑freeze packs.
Run a test with a logger; tune quantity until arrivals are rock‑solid.
Document the SOP and train the team.

À propos du tempk

Tempk is a cold‑chain packaging specialist with 14+ years of experience across food and pharma. We design reusable gel and dry‑ice packs, advanced insulated shippers, et CNAS‑certified thermal testing validates real‑world performance. Our PCM and smart‑monitoring options help you ship frozen products safely, efficiently, and sustainably.

Talk to an expert: Need a lane‑specific pack‑out or a quick audit? Contact Tempk for a tailored plan and a ready‑to‑use SOP for your next frozen shipment.