كيف تحافظ صفائح الثلج الجاف التي يمكن التخلص منها للشحن على البضائع مجمدة 2025
مقدمة: When you need to ship perishable foods, vaccines or lab samples at ultra low temperatures, أ disposable dry ice sheet for shipping offers an easy solution. These sheets are compact, lightweight and self cooling, yet they can maintain temperatures down to –109.3 °F (-78.5 درجة مئوية). In this comprehensive guide you’ll learn what disposable dry ice sheets are, كيف يعملون, the safety rules you must follow and why sustainable materials and smart sensors are shaping the cold chain industry in 2025. By the end you’ll know how to select the right sheet and keep your shipments frozen without fuss.
What is a disposable dry ice sheet and how does it differ from gel packs?
How can you size and configure dry ice sheets to keep goods frozen longer?
ما السلامة, regulatory and environmental considerations must you know?
What trends are transforming dry ice sheet technology and the cold chain in 2025?
How should you choose the right product and integrate it into your cold chain operations?
What Is a Disposable Dry Ice Sheet for Shipping?
A disposable dry ice sheet is a flexible matrix that you hydrate, freeze and then use as a portable source of dry ice to keep products frozen during transit. It’s made from absorbent material filled with dry ice powder or phase change material (بي سي إم) granules. After soaking the sheet in water for at least 15 minutes and freezing it below the PCM’s temperature, the water becomes ice, and the carbon dioxide trapped in the sheet sublimates directly to gas when exposed to warmer temperatures. This sublimation process keeps shipments extremely cold without leaving liquid residue.
How Dry Ice Sheets Work and Why They Keep Things Frozen
الجليد الجاف هو الشكل الصلب من ثاني أكسيد الكربون (co₂). It sublimes directly into gas at –109.3 °F (-78.5 درجة مئوية), releasing cold vapors that absorb heat and keep the surrounding products frozen. على عكس حزم الهلام, which maintain temperatures around 32 ° f (0 درجة مئوية) for items that need to stay cold but not frozen, dry ice sheets can keep goods below freezing for longer periods. Once the dry ice sublimates completely, there’s no meltwater; instead you’re left with an empty, lightweight sheet that you can dispose of or reuse.
Advantages Compared with Traditional Gel Packs
| ميزة | Disposable Dry Ice Sheet | حزمة هلام | معنى بالنسبة لك |
| نطاق درجة الحرارة | –109 °F to –50 °F depending on insulation | ~32 °F (0 درجة مئوية) | Dry ice sheets keep goods frozen solid, whereas gel packs maintain refrigeration only. |
| وزن & residue | Lighter than water based packs; sublimates leaving no liquid | أثقل; leaves water when melted | Ideal for air shipments because carriers charge by weight and leaks can damage contents. |
| مدة | حتى 72 hours or more with proper insulation and quantity | 24-48 ساعة, longer if pre chilled | Dry ice sheets are better for long distance or delayed deliveries. |
| Regulation | Classified as hazardous (و 1845); shipping paper required over 5.5 رطل | Not hazardous; minimal regulation | You must follow specific rules when shipping dry ice by air or internationally. |
| إعادة الاستخدام | Reusable until damaged | Many gel packs are reusable | Both options can be reused, but dry ice sheets become unsafe if torn or contaminated. |
Disposable dry ice sheets strike a balance between the powerful cooling of dry ice blocks and the convenience of gel packs. They offer flexible sizing, easy storage before hydration and the ability to keep small shipments frozen without bulky coolers.
How Do You Size and Configure Dry Ice Sheets Correctly?
Choosing the right amount of dry ice is essential because under sizing leads to thawed products, while over sizing wastes material and increases shipping costs. Experts recommend using a 1:1 weight ratio of dry ice to product weight for shipments lasting up to 48 ساعات. على سبيل المثال, إذا كنت شحن 5 kg of frozen seafood, you should plan for around 5 kg of dry ice across all sheets. Use more ice for longer transit times, high ambient temperatures or when transporting sensitive biological samples.
Practical Sizing Tips for Home and Small Business Use
Pre hydrate and freeze properly: Soak the sheets for at least 15 minutes and freeze them at least 10 °C below the PCM’s freezing point. Pre chilling your products and packaging dramatically extends the cooling duration.
Use multiple layers: Place one sheet on the bottom, your product in the middle and another sheet on top. Larger boxes may require layers on all sides to maintain consistent temperature.
Choose the right cell size: Sheets come in various cell counts (على سبيل المثال, 9خلية, 24خلية). More cells allow the sheet to wrap around irregular items and provide even cooling.
Allow for sublimation: Because dry ice produces CO₂ gas, avoid airtight packaging. Ventilation prevents pressure buildup.
Adjust for season and route: Add 10–25% more dry ice in summer or for international shipments. High ambient temperatures accelerate sublimation.
Design and Material Considerations
Disposable dry ice sheets may look like simple plastic pouches, but their construction influences performance:
Absorbent matrix: High density foam or woven fabric holds CO₂ and water. This structure allows the sheet to be flexible and reduces the risk of leaks even after repeated freezing and thawing.
Phase change materials (PCMS): Some sheets use small PCM powder pieces that freeze at specific temperatures. أثناء الاستخدام, these materials help buffer temperature fluctuations and extend cooling time.
Eco friendly coatings: Manufacturers like Tempk offer biodegradable kraft paper instead of plastic film to reduce environmental impact.
When selecting a product, check the manufacturer’s specifications for cell size, weight and recommended hydration time. على سبيل المثال, a 9 cell hydrate dry ice pack measuring 42 × 28 cm weighs about 16.5 kg per carton and is reusable until it leaks or becomes unhygienic.
Are Disposable Dry Ice Sheets Safe to Use?
Dry ice is classified as a hazardous material because of its extreme cold and the CO₂ gas it releases during sublimation. الاختناق, frostbite and explosion due to pressure buildup are the primary risks. لكن, by following simple precautions you can use dry ice sheets safely and legally.
Safety Hazards and How to Control Them
| خطر | وصف | Controls & أفضل الممارسات |
| الاختناق | CO₂ gas can displace oxygen in enclosed spaces, causing headache, dizziness or suffocation. | Always handle dry ice in well ventilated areas; avoid transporting in unventilated vehicles or elevators. |
| Frostbite/Burns | Contact with –78 °C surfaces can damage skin. | ارتداء القفازات المعزولة, safety goggles and long sleeves. Never handle dry ice with bare hands. |
| Pressure Build Up | CO₂ gas can build up in sealed containers and cause explosion. | Use ventilated packaging; do not place dry ice in airtight boxes or sealed glass jars. |
| Material Damage | Extreme cold can weaken plastic or glass and cause cracks. | Use high density polyethylene or polystyrene foam containers; avoid thin plastic. |
| التأثير البيئي | Sublimation releases CO₂, غاز الدفيئة. | Use dry ice produced from recycled CO₂, optimize quantity and combine with sustainable insulation. |
المتطلبات التنظيمية لشحن الثلج الجاف
Because dry ice is classified as a Class 9 مواد خطرة, shipping carriers have rules to protect handlers and passengers. Here are key guidelines:
Labeling and documentation: For air shipments with more than 5.5 رطل (2.5 كجم) من الجليد الجاف, you must label the package with و 1845, the weight of the dry ice and a Class 9 تسمية الخطر. Shipments below 5.5 lbs still require the words “Dry Ice” or “Carbon Dioxide, Solid” on the outer container.
تهوية: Carriers require packages to allow venting; never seal boxes tightly because gas buildup can burst them.
Proper containers: Use EPS foam containers inside sturdy corrugated boxes; keep the dry ice separate from the product by a barrier to prevent freeze damage.
Carrier policies: UPS and other carriers treat dry ice shipments within the contiguous U.S. by ground as non regulated, but air shipments and international shipments must comply with IATA Packing Instruction 954. Always check your carrier’s specific requirements.
تمرين: Businesses shipping dry ice regularly should complete hazard communication and packaging training because regulators (نقطة, IATA) may require certification.
Environmental Impact and Sustainability
Many shippers worry that using dry ice sheets contributes to carbon emissions. في الواقع, dry ice is typically produced by capturing CO₂ released from industrial processes, so using it doesn’t generate new emissions but repurposes waste gas. ما زال, sublimating dry ice releases CO₂ into the atmosphere, which can affect climate if used excessively. Here’s how to reduce your environmental footprint
Use recycled CO₂: Choose suppliers that produce dry ice from recovered industrial emissions rather than new CO₂ extraction.
Optimize quantity: Measure the exact amount of dry ice needed (see sizing tips above). Over packing wastes material and increases greenhouse emissions.
Combine with sustainable insulation: Use biodegradable packaging, such as plant based foam or kraft paper, and consider hybrid cooling solutions that reduce the amount of dry ice required.
Capture and reuse: Innovative systems capture CO₂ released during sublimation for reuse; while not common in small shipments, the technology is growing.
Dispose properly: Let unused dry ice sublimate in a ventilated area; never pour it down drains or dispose of it in enclosed spaces.
Sustainability in Product Design
Manufacturers are developing eco friendly dry ice sheets that are thin before hydration, reducing storage volume and shipping weight. Sheets made with biodegradable kraft paper and non toxic PCM powders minimize plastic waste. Some packaging companies integrate IoT sensors into dry ice kits to monitor temperature and reduce waste by alerting shippers when conditions exceed thresholds.
2025 Trends Shaping Disposable Dry Ice Sheets and the Cold Chain
The cold chain industry is evolving rapidly as e commerce, pharmaceuticals and biologics demand ever more reliable and sustainable cooling solutions. Here are the key 2025 الاتجاهات:
Smart Temperature Monitoring and IoT Integration
Wireless sensors can track temperature and location in real time. IoT devices send alerts to your smartphone when temperatures deviate from safe ranges, تمكين الإجراء التصحيحي الفوري. Smart monitoring improves quality control and reduces waste, especially for vaccines and biologics that require strict temperature ranges.
أنظمة التبريد الهجينة
Hybrid solutions combine dry ice with gel packs or battery powered active refrigeration. For shipments lasting longer than two days, carriers recommend adding gel packs to slow the sublimation of dry ice and maintain stable temperatures. في 2025, more vendors offer ready to use kits with pre measured dry ice sheets, PCM inserts and reusable coolers.
مواد التعبئة والتغليف المستدامة
Market demand for eco friendly materials is accelerating. Research forecasts the reusable cold chain packaging market to grow from USD 4.97 مليار في 2025 إلى USD 9.13 مليار من قبل 2034. Innovations include plant based foam, recyclable liners and biodegradable gel packs. Manufacturers like Tempk offer kraft paper coatings and powder filled cells that reduce plastic waste.
Blockchain and Traceability
Blockchain technology tracks each shipment’s temperature history and chain of custody. This transparency ensures regulatory compliance, enhances consumer trust and helps recall contaminated products quickly. بواسطة 2025, more logistics providers will integrate blockchain into their cold chain services.
Market Growth and Regional Insights
The cold chain market for refrigerants and reusable packaging is expected to grow sharply due to rising pharmaceutical shipments and online grocery orders. The market for cold chain refrigerants is projected to increase from $1.69 مليار في 2025 ل $2.92 مليار من قبل 2032. North America leads adoption, while Asia Pacific is the fastest growing region thanks to expanding healthcare systems and e commerce. Investing in efficient dry ice sheets positions your business to meet this demand while reducing environmental impact.
How to Choose the Right Disposable Dry Ice Sheet for Your Needs
Selecting the best dry ice sheet requires balancing cooling requirements, يكلف, sustainability and ease of use. Here’s a step by step approach:
Identify your product’s temperature requirement: Frozen foods and vaccines require –18 °C or colder; specialty biologics may need –50 °C or colder. Choose dry ice sheets that achieve these ranges.
Estimate transit time and environment: Determine how long the shipment will be in transit and the highest ambient temperature along the route. استخدم 1:1 ratio as a baseline and adjust upward for longer trips or hot climates.
Check sheet size and configuration: A 9 cell sheet may be adequate for small meal kits, while large medical shipments may require 24 cell or custom sizes. The ability to cut the sheet to fit your container adds flexibility.
Assess ease of preparation: Some sheets require 24 hour hydration, while others need only 15 دقائق. Choose according to your workflow.
Look for reusable and eco friendly materials: Opt for sheets that are reusable until damaged and made with biodegradable coatings.
Evaluate cost vs. أداء: More cells and proprietary PCM powders increase cost but improve performance and sustainability. Compare products on cost per hour of cooling rather than unit price alone.
Comparing Top Product Features (Example Scenario)
| ميزة | 9 Cell Hydrate Dry Ice Sheet | Standard Gel Pack | لماذا يهم |
| أبعاد | 42×28 cm; 24 cells per sheet | يختلف; typically 15×20 cm | Larger sheets cover more surface area and can be cut to fit. |
| مادة | Non toxic PCM powder with absorbent matrix | Water based gel | PCM powders freeze at specific temperatures, offering more stable cooling. |
| Weight per carton | 16.5 كجم (multiple sheets) | Similar weight but fewer hours of cooling | Weight influences shipping cost and handling. |
| تحضير | Soak ~15 min then freeze at –10 °C | Freeze overnight | Faster turnaround for quick shipments. |
| قابلة لإعادة الاستخدام? | نعم, until damaged | في كثير من الأحيان نعم, but some single use | Reusability reduces waste and cost per use. |
| Eco friendly options | Kraft paper or recyclable film | فيلم بلاستيكي | Choosing eco friendly packaging enhances sustainability credentials. |
ملحوظة: This table uses the 9 cell hydrate sheet as an example. Other products may have different sizes and performance; always consult manufacturer specifications.
Practical Tips and User Advice
For meal kit delivery: Pack the dry ice sheet below and above the food, and include a cardboard separator to prevent freezing delicate items. Consider using gel packs in combination for multi day deliveries.
For pharmaceutical samples: Use certified insulated boxes, attach UN 1845 labels and include a temperature logger. Choose quick hydration sheets to streamline your process.
للشحنات الدولية: Confirm local regulations, adjust dry ice quantities for longer transit and avoid shipping during extreme heat waves. Work with carriers that provide temperature controlled logistics services.
Real World Example: A small biotech firm shipping blood samples across state lines used disposable dry ice sheets instead of loose dry ice pellets. By pre hydrating the sheets and placing one above and below the vials, they maintained –20 °C for 60 ساعات, meeting regulatory requirements while reducing shipping weight by 15% compared with traditional gel packs.
الأسئلة المتداولة
س 1: How long do disposable dry ice sheets keep items frozen?
With proper hydration, pre chilling and adequate insulation, dry ice sheets can keep items frozen for up to 72 ساعات. The exact duration depends on ambient temperature, insulation quality and the amount of dry ice used.
Q2: Are dry ice sheets reusable?
نعم. You can reuse dry ice sheets until they leak or become unhygienic. Always inspect sheets after each use and discard any that show tears or contamination.
س 3: Can I combine dry ice sheets with gel packs?
Combining dry ice and gel packs is recommended for shipments exceeding one or two days or when moderate temperatures near the end of the journey are acceptable. Gel packs slow the sublimation of dry ice and smooth out temperature fluctuations.
س 4: What’s the difference between dry ice sheets and loose dry ice?
Dry ice sheets confine CO₂ in an absorbent matrix, making them cleaner and easier to handle than loose pellets. They’re less messy and can be cut to size, but they may not last as long as large blocks; always check manufacturer specifications.
س 5: Is it safe to ship dry ice through regular mail carriers?
Most carriers accept dry ice shipments, but you must follow each carrier’s specific labeling and quantity rules. على سبيل المثال, UPS requires labeling with “Dry Ice” and the weight for packages under 5.5 lbs and full hazardous paperwork for larger shipments.. Check the latest guidelines before shipping.
2025 Market Insights and Future Outlook
ال reusable cold chain packaging market is poised for significant growth, driven by heightened demand for vaccines, biologics and high quality foods. Analysts project the market to expand from دولار أمريكي 4.97 مليار في 2025 إلى USD 9.13 مليار من قبل 2034, representing a compound annual growth rate of 6.98%. This expansion underscores the importance of efficient and sustainable cooling solutions like disposable dry ice sheets.
Increasing consumer awareness and regulatory pressure are pushing companies to adopt sustainable materials and technologies. على سبيل المثال, المواد الهلامية PCM القابلة للتحلل, recyclable liners and smart temperature sensors are becoming standard. The shift towards circular supply chains encourages businesses to reuse packaging and capture sublimated CO₂ for reprocessing.
On the technology front, blockchain platforms are expected to play a larger role in verifying the integrity and authenticity of cold chain shipments. The combination of blockchain and IoT sensors will enable real time visibility and tamper proof records, reducing fraud and spoilage. في أثناء, hybrid cooling systems that integrate passive dry ice sheets with active refrigeration units will extend shipping distances while minimizing environmental impact.
To stay competitive in 2025 وما وراءها, businesses must invest in تمرين their staff on hazardous materials handling, optimize packaging design و partner with suppliers who prioritize sustainability and innovation.
ملخص وتوصيات
Disposable dry ice sheets offer a powerful yet convenient way to keep shipments frozen in transit. They provide ultra low temperatures down to –109 °F, نكون lightweight and leave no residue, and can be reused until damaged. To use them effectively:
Size and configure correctly: استخدم 1:1 ratio of dry ice weight to product weight for up to 48 ساعات, increase quantity for longer trips.
Follow safety and regulatory rules: Handle with insulated gloves, allow ventilation, and label packages properly.
Choose sustainable options: Select sheets with biodegradable coatings and PCM powders, and minimize CO₂ usage.
Embrace new technology: Use IoT sensors to monitor temperature and consider hybrid solutions for longer routes.
باتباع هذه الإرشادات, you’ll ensure your products arrive safely and in compliance with 2025 cold chain regulations.
Recommended Next Steps
Assess your current shipping requirements. Calculate the weight, temperature needs and transit duration for your goods.
Select and test a dry ice sheet. Purchase a sample pack, hydrate and freeze it according to instructions, and run a trial shipment with temperature monitoring.
Implement training and compliance. Ensure your team understands dry ice hazards, labeling and carrier requirements; maintain documentation for audits.
Optimize packaging for sustainability. Switch to biodegradable insulation and reusable containers to reduce waste and appeal to eco conscious customers.
Stay updated on trends. Subscribe to industry newsletters and attend webinars to learn about IoT devices, blockchain solutions and new cooling technologies.
حول Tempk
Tempk is an innovator in cold chain packaging solutions, providing dry ice sheets, gel packs and PCM coolants for healthcare, food and e commerce industries. نحن نركز على سهولة الاستخدام, safety and sustainability, offering sheets that hydrate quickly, fit a variety of container sizes and use biodegradable materials. Our team of experts continuously develops new smart packaging systems, integrating temperature sensors and data analytics to help you monitor your shipments in real time. مع customizable solutions and rigorous quality standards, we support clients around the world in delivering temperature sensitive products reliably.
دعوة إلى العمل: Ready to improve your cold chain logistics? Contact Tempk for tailored advice and explore our range of disposable dry ice sheets designed to keep your products safe and compliant in 2025 وما وراءها.
