Tyvek® Cargo Covers Offer Advanced Multi-Threat Protection Against Temperature Excursions
How well are you protecting your perishable and temperature sensitive products against the hazards that threaten them?
COLD CHAIN BREAKS ON THE TARMAC – YOUR GREATEST VULNERABILITY
According to IATA research, nearly 60% of temperature excursions occur during tarmac delays. While on the tarmac, your temperature sensitive products are subject to a variety of threats that can lead to a temperature excursion including:
How effectively does your current protection address these threats?
SOLAR RADIATION MAY BE THE BIGGEST THREAT YOU FACE
Did you know that the temperature under your pallet cover can far exceed “ambient”? Ambient temperature is measured in an enclosed and shaded device, isolated from the effects of solar radiation, wind and precipitation.
Even on a moderately hot day – when the ambient temperature reaches 32°C (90°F) – the temperature under film-based protective covers or wraps can reach 75°C or higher (167°F). These temperatures can have devastating effects on your products.
Summarized below are the results of a trial conducted in Florida, in March of 2013, demonstrating the ability of several different types of commonly used wraps and covers to protect your products from solar radiation.
Test Load Temperature
WHY REFLECTIVITY MATTERS
Solar radiation is the leading cause of high temperature spikes on the tarmac. Film based wraps and covers do not effectively protect against solar radiation.
ASTM Solar Spectrum at Sea Level
Comparison of surface temperatures (°C)
ARE YOU FOCUSED ON THE RIGHT ‘R’ ?
What’s most important to you? Reflectivity or ‘R’ value or both? How do you decide which covers or thermal blankets to use?
If you rely on thermal chamber testing and focus on “R-value” when selecting a thermal cover or blanket, you’re at greater risk for temperature excursions. Thermal chambers do not mimic real world tarmac exposure because they disregard the effect of solar radiation.
To effectively protect your products from temperature excursions, you need to address the three mechanisms by which heat is transferred:
How well are you protecting your temperature sensitive products against all of these threats today?
WHY THICKER DOESN’T MEAN BETTER PROTECTION
"I can’t believe how well this lightweight, thin Tyvek® cover works."
We hear that a lot.
Here’s why thicker doesn’t always mean better protection.