إذا قمت بشحن البضائع المجمدة, dry ice pouches help you stay compliant, ينظف, وباردة باستمرار. أنها تحتوي على كريات أو كتل مع السماح بالهروب من CO₂, لذلك يبقى منتجك متجمدًا ويظل المعالجون آمنين. يوضح هذا الدليل كيفية الحجم, علية, ملصق (UN1845), واختيار بدائل لمدة 24-72 ساعة في 2025.
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When to use dry ice pouches for frozen lanes and how they differ from gel and PCM pouches
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How many dry ice pouches you really need for 24–72 hours without overpaying
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How to label and vent correctly under UN1845 and IATA PI 954 في 2025
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When to pick gel or PCM instead to avoid hazmat steps on chilled routes
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الاتجاهات ل 2025 التي تؤثر على المواد, قوائم مراجعة القبول, والاستدامة
What are dry ice pouches and when should you use them?
إجابة قصيرة: أكياس الثلج الجاف متهمة, tear‑resistant bags or sleeves that hold solid CO₂ inside an insulated shipper so gas can escape while your goods stay frozen. Use them when you need multi‑day frozen control (≤ −18 درجة مئوية), safer handling, and tidier packouts than loose pellets.
في الممارسة العملية: The pouch separates refrigerant from product, reduces mess, and improves placement around the payload. Some teams also use insulated “thermal pouches” with gel or dry ice to extend hold time in mailers and totes. Always confirm that the “pouch” you buy is meant to contain الثلج الجاف and not the منتج.
Dry ice pouches vs. حزم هلام مقابل. PCM pouches
خلاصة القول: Dry ice pouches deliver ultra‑cold headroom; gel and PCM hold narrower, warmer ranges with simpler booking. Dry ice sits near −78.5 °C, while typical gel hovers around 0–5 °C and PCM bricks can target −20 °C or +5 °C as needed. Use dry ice pouches for deep‑frozen lanes and hot routes.
| Refrigerant Option | النطاق النموذجي | الأفضل ل | ماذا يعني لك |
|---|---|---|---|
| Dry ice pouches | ~ −78.5 °C | 24–96 h frozen | Requires venting and UN1845/Class 9 by air; highest cooling capacity. |
| PCM pouches (على سبيل المثال, −20 °C or +5 °C) | −25 °C to +7 °C | 12–36 h frozen or chilled | Tighter control without DG paperwork on many services. |
| حزم هلام | 0-5 درجة مئوية | Overnight chilled | Easy, قابل لإعادة الاستخدام, but not for long frozen holds. |
Practical tips when you’re new to dry ice pouches
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Never seal CO₂ in. Use porous or vent‑path pouches; never heat‑seal the bag.
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ما قبل الشرط. Hard‑freeze product and pre‑cool the shipper to reduce early load.
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Distribute mass. Several smaller pouches around the payload beat one big brick.
Real‑world snapshot: A bakery shipping ice‑cream cakes switched from loose pellets to dry ice pouches and cut cleanup while keeping hold time steady by controlling total kilograms and vent paths.
How many dry ice pouches do you need for 24–72 hours?
قاعدة سريعة: ابدأ مع ~2.5–5 kg per 24 ح for a 10–15 L shipper in warm weather, then tune by lane test. Split across 2–4 dry ice pouches to increase cold surface area and stability.
لماذا يعمل: Dry ice absorbs a large amount of heat as it sublimates; planning by surface area and ambient, not just liters, yields more reliable results.
| مدة | خفيف (≤22 °C) | دافيء (23–30 °C) | حار (≥31 °C) | ما يجب القيام به |
|---|---|---|---|---|
| 12 ح | 1–2 kg | 2–3 kg | 3–4 kg | 1–2 dry ice pouches per 12 L shipper. |
| 24 ح | 2.5–4 kg | 4–6 kg | 6–7 kg | Add side pouches to boost surface area. |
| 48 ح | 5–7 kg | 7–10 kg | 10–12 kg | Upgrade insulation or pouch count. |
| 72 ح | 7-9 كجم | 10–13 kg | 13–16 kg | Validate in peak‑summer conditions. |
Placement and venting for dry ice pouches
Place dry ice pouches at the bottom and sides, center the payload, then top with another pouch. Keep liners open and the outer box vent‑capable; avoid fully taped seams or airtight coolers. Mark net dry ice mass in kilograms.
عملي, user‑ready tips
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Hot lane? Add a thin −20 °C PCM next to the product; push dry ice pouches outward.
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Mixed SKUs? Separate with a rigid inner to prevent crushing and cold spots.
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Receiving notes. Include a slip noting “packaged with dry ice” and the net kilograms.
Case in brief: اثنين 2.5 kg dry ice pouches plus a thin −20 °C PCM held a 48‑hour ice‑cream shipment under −18 °C despite a 2‑hour depot delay.
أيّ 2025 rules apply to dry ice pouches, and how do you pass acceptance?
Core rule for air: علامة "الجليد الجاف" أو "ثاني أكسيد الكربون, صلب,"UN1845 و وزن الثلج الجاف الصافي (كجم) on the same face as the Class 9 ملصق. Packaging and pouches must تنفيس. Shipper’s Declaration is often not required when used with non‑DG goods, but acceptance checklists still apply.
Passenger vs. cargo: Baggage typically caps dry ice at 2.5 kg per passenger with airline approval and vented packaging; cargo follows PI 954 وتغيرات المشغل. Treat passenger carriage as a different regime.
Fast compliance checklist for dry ice pouches (copy/paste to SOP)
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Use purpose‑built dry ice pouches; لا seal CO₂ in plastic.
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Keep liners open; ensure the خارجي is vent‑capable.
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علامة UN1845, الاسم الصحيح, و صافي كجم; apply Class 9 ملصق.
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Book a service that accepts dry ice; add AWB details as required.
Dry ice pouches or alternatives: which fits your lane?
Pick dry ice pouches when you must keep product frozen end‑to‑end, transit exceeds 36 ساعات, or ambient peaks above 30 °C. Pick PCM pouches for tight bands (−20 °C or +5 °C) without DG paperwork. Pick gel for day‑of or overnight chilled deliveries.
Two‑minute lane check (self‑assessment)
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Must the payload stay frozen solid?
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Will transit exceed 36 hours door‑to‑door?
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Will ambient exceed 30 °C on route?
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Does your carrier accept UN1845 on your service?
If you checked 3+ boxes, design around dry ice pouches; otherwise trial a PCM‑first packout.
2025 developments and trends for dry ice pouches
ما الجديد: Operators refreshed acceptance job aids to emphasize venting, label size, and net‑kg visibility. Packaging vendors expanded paper‑based “dry ice bags” and insulated thermal pouches; compostable gels are maturing as short‑haul alternatives when dry ice is limited.
الأحدث في لمحة
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Clear “no sealed plastic” guidance in acceptance checklists reduces rejection risk.
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Eco‑pouch options cut waste while improving moisture control inside boxes.
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Dual‑strategy shippers win: dry ice pouches for hot interstate routes, PCM pouches for short, regulated lanes.
نظرة السوق: Growth in frozen e‑grocery and biologics is pushing mixed refrigerant strategies and better insulation, with validated packout geometry shown to matter as much as total kilograms.
Frequently Asked Questions about dry ice pouches
س 1: Are dry ice pouches the same as vacuum‑sealed ice bags?
لا. Dry ice pouches must vent gas to be safe and compliant; vacuum‑sealing CO₂ is unsafe.
Q2: Can I put dry ice pouches inside a poly liner?
Yes—keep the liner open so CO₂ can escape; the outer package must also vent.
س 3: How much dry ice do I need for 48 ساعات?
يخطط ~5–9 kg for a small cooler in warm weather, split across multiple pouches. التحقق من صحة على المسار الخاص بك.
س 4: What labels go on a box with dry ice pouches?
يتقدم UN1845, الاسم الصحيح, صافي كيلوغرام, و فصل 9 label on the same face.
س 5: Do dry ice pouches work for food shipments?
نعم. They prevent direct contact with pellets and reduce mess, مثالي ل dry ice pack for shipping food scenarios. Use vented packaging and gloves.
Summary and recommendations for dry ice pouches
يتذكر: Dry ice pouches make frozen shipping cleaner and safer by containing pellets while allowing CO₂ to vent. Pass acceptance by marking UN1845 with net kilograms and using vent‑capable outers. Size by route, المحيط, and surface area rather than liters alone.
الخطوات التالية: Map your lane time and ambient, start at 2.5–5 kg per 24 ح, split across multiple dry ice pouches, and run one trial. Standardize your SOP and labels, then adjust ±1 kg based on data.
حول Tempk
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