كيفية استخدام حزم الثلج الجافة الكبيرة للشحن (2025)

Updated August 2025. Large dry ice packs help you ship frozen and ultra‑cold goods with confidence by extending hold time to 24–72 hours while simplifying handling and documentation. في هذا الدليل, you’ll get a practical calculator, compliant pack‑outs, and decision tools you can use today to reduce temperature excursions and cost. Built for cold‑chain shippers in food, فارما, التكنولوجيا الحيوية, and horticulture.

• What are large dry ice packs and which type fits your route and temp band? (PCM مقابل. co₂)

• How many packs do you need for 24–72 hours? (simple formula + table)

• How to pack for compliance and fewer excursions? (خطوة بخطوة)

• When do hazmat rules apply and when they don’t? (UN1845, فصل 9 overview)

• ما الجديد في 2025 and how does it help you? (الاستدامة, أجهزة استشعار, better PCM)

What are large dry ice packs and which type should you choose?

إجابة قصيرة: “Large dry ice packs” are either (1) قابل لإعادة الاستخدام حزم PCM that freeze below 0 °C for safe, long‑lasting cold, أو (2) CO₂ dry ice blocks/slabs (UN1845) for extreme cold (down to −78.5 °C). Pick PCM large dry ice packs for most frozen shipments (−20 °C to 0 °C); choose CO₂ blocks for ultra‑cold or very long routes. The right choice cuts paperwork, hazards, and cost.

لماذا يهمك: In everyday cold chain, بي سي إم large dry ice packs deliver sub‑zero control without CO₂ gas or hazmat limits. Use CO₂ only when you truly need ultra‑low temps (على سبيل المثال, ≤−50 °C) or very long transit beyond 72 ساعات. That split lets you optimize safety, وقت, and unit economics.

كم عدد large dry ice packs do you need for 24–72 hours?

Deep dive: Capacity depends on transit hours, العزل, الحرارة المحيطة, and product mass. For CO₂ dry ice, a practical estimate is 5–10 lb per 24 h in standard insulation; VIP lowers the rate. For PCM large dry ice packs, plan by surface coverage and total PCM mass; pre‑chilled cargo reduces load dramatically. Always confirm with a data logger on your first live runs.

Quick Calculator (rule‑of‑thumb):

Practical tips with large dry ice packs

• Pre‑condition everything: Pre‑freeze or pre‑chill products so packs maintain, لا تخلق, the cold.

• Top‑load cold: Cold sinks; put large dry ice packs on top and around sides for even gradients.

• Freeze fully: Freeze PCM packs flat ≥8 hours at −18 °C; no slushy cores. Rehydrate dehydrated sheets before reuse.

القضية الميدانية: A lab shipped vaccines cross‑country in summer using PCM large dry ice packs at +5 °C inside a VIP shipper; the box stayed near 5 °C for ~36 h despite >30 °C ambient, with no hazmat paperwork.

How do you pack with large dry ice packs to cut excursions?

إجابة قصيرة: Pre‑cool, insulate, position, تنفيس (if CO₂), والتسمية. Large dry ice packs (بي سي إم) go around and above products in a tight, insulated cavity; CO₂ requires vent paths and UN1845 labeling. A tidy pack‑out = longer hold + safer handling.

خطوة بخطوة (applies every time):

1. Pre‑cool the shipper (EPS or VIP) and the product.

2. Stage your packs: freeze PCM large dry ice packs صلب; for CO₂, break slabs to fit.

3. Build a cocoon: side‑line → base → product → top‑load extra packs.

4. Seal well: reduce air gaps; add void‑fill.

5. Instrumentation: place a data logger near the warmest spot (door/top).

6. امتثال: vent if CO₂, apply UN1845/Class 9 + وزن صافي; PCM needs no hazmat labels.

Large dry ice packs مقابل. CO₂ dry ice vs. حزم هلام

Actionable pointers

• Pharma 2–8 °C: استخدم +5 درجة مئوية PCM large dry ice packs with VIP; add a logger and shock indicator.

• المأكولات البحرية المجمدة: Use −20 °C PCM; double‑top‑load for 36–48 h or add a small CO₂ layer for >48 ح.

• Live plants: Use +5–10 °C PCM; تجنب الاتصال المباشر; يفعل لا use CO₂ in sealed plant boxes.

ملاحظة العالم الحقيقي: One shipper lost a CO₂ shipment due to no vent path; pressure rose and the package failed. After adding venting and labels, incidents dropped to zero.

أنظمة: when do hazmat rules apply to large dry ice packs?

إجابة قصيرة: Only CO₂ “dry ice” is regulated (UN1845, فصل 9). Large dry ice packs that use PCM are لا hazmat and need no UN number or special labels. When you ship CO₂ by air or ground, you must vent, mark UN1845 + وزن صافي (كجم), and follow carrier limits.

قائمة مراجعة الامتثال (CO₂ only):

• UN1845 + فصل 9 label on each package and وزن الثلج الجاف الصافي (كجم).

• تغليف التهوية so CO₂ can escape (لا حاويات محكمة الإغلاق).

• Carrier rules (على سبيل المثال, airline package limits, often ≤200 kg per piece).

• مستندات as required (على سبيل المثال, Shipper’s Declaration where applicable).
  ل PCM large dry ice packs, none of the above hazmat steps are required.

2025 developments and trends in large dry ice packs

ما الجديد هذا العام: Shippers are replacing one‑and‑done CO₂ with reusable large dry ice packs + عزل أفضل. يتوقع eco‑friendly materials, smarter sensors with live alerts, و more precise PCM (tight hold at −20 °C or +5 °C) that extends duration without adding mass. These upgrades improve audit readiness and reduce total landed cost across hot lanes.

at -a -glance

• Greener builds: Recyclable films and reusable designs reduce waste per shipment.

• Live monitoring: Real‑time temp/humidity alerts reduce investigation time after delivery.

• Better PCMs: Longer plateaus mean fewer large dry ice packs for the same route time.

نظرة السوق: Growth in e‑grocery and biologics is expanding validated pack‑out libraries and making higher‑grade insulation more affordable, so you can standardize SKUs and train teams faster.

التعليمات

س 1: How long do large dry ice packs last?
عادة 24-48 ح in EPS and up to 72 ح in VIP, depending on pack mass, الحرارة المحيطة, and pre‑conditioning. Always validate with a logger on your first route.

Q2: Are large dry ice packs reusable?
نعم. Quality PCM packs are built for dozens of cycles. Rehydrate dehydrated sheets, inspect seals, and refreeze flat for full performance.

س 3: Do I need hazmat labels?
Only for كوك جاف الثلج الجاف. PCM large dry ice packs are non‑hazmat and don’t require UN1845 or venting.

س 4: Are large dry ice packs safe for shipping plants?
Yes—use +5–10 °C PCM and avoid direct contact to prevent chill shock; do not use CO₂ in sealed plant boxes.

س 5: How many packs should I start with?
Line the box (all sides + قمة) مع large dry ice packs, ثم أضف 25-50 ٪ more for >48 h or hot lanes. Validate and tune from data.

ملخص & التوصيات

الوجبات الرئيسية: يستخدم large dry ice packs (بي سي إم) for most frozen/chilled lanes; reserve CO₂ for ultra‑cold or very long routes. ما قبل الشرط, fully freeze, line all sides, and top‑load extra packs. Validate with a logger and standardize your pack‑out per SKU and lane. سوف تقلل الرحلات, training overhead, and total cost.

الخطوات التالية (افعل هذا الآن):

1. Pick your type: بي سي إم large dry ice packs (−20 °C or +5 °C) مقابل. CO₂ based on target temp and duration.

2. Model + التحقق: Use the quick calculator; run a monitored pilot.

3. Standardize: Create lane‑specific SOPs and pack‑out diagrams; train the team.

4. CTA: Request a pack‑out consultation and sample kit from Tempk.

حول Tempk

We design and validate temperature‑controlled packaging—large dry ice packs, حزم هلام, VIP/EPS shippers, and turnkey kits—for food, فارما, التكنولوجيا الحيوية, and horticulture. Our focus: reliable hold times, simple SOPs, and measurable savings. Ask us about reusable options and data‑driven pack‑outs that fit your lanes.

CTA: Talk to a Tempk specialist for a tailored pack‑out plan