Design Features: Can be used as a HOT or a COLD pack Food and drink safe - contains patented FDA Approved Food Grade Polymer. Reusable - therefore economical for the user Space saving - as a flat sheet just add water to hydrate Non- toxic suitable for direct contact with meat and seafood Fully washable - which allows spills of food to wiped off hygienically Commercially used by Australian Government for meals on wheels service, Department of Defence and Coles online. Enhances the thermal temperature of your delivery bag - maintains for an hour (approx.) Each Techniice HDR Dry Ice Sheet comprises of 24 four ply cells (i.e. 2 inner textile sheets which contain the refrigerant polymer and 2 other high density plastic sheets) and can used to Cool or Heat. Easy to use - full instructions will be included with your purchase. How it works as a heat pack: The flat sheet is immersed in warm water, which activates the 24 polymer cells. To increase activation - agitate the cells. The hydrated sheet is placed in a microwave for approx. 1-2 minutes. Please be carefully when removing from the microwave as the sheets will be hot. The heat pack is placed in the delivery bag and your customers order is placed in the bag. The sheets can be placed between food containers or at the base of the bag. Tests with our Take Away Delivery Bags: We tested three of our bags and found after we heated the packs and placed them in the bags it took approximately 10 minutes to reach the maximum temperature. This maximum temperature varied depending on size of the bag - approx. 40 degree Celsius - which was 20 degrees higher than starting temperature, without heat pack.The temperature dropped by 1 degree Celsius approx. every 5 minutes - so the internal temperature remained above 30 degrees Celsius for an hour. Please note - condensation did occur when the bag was zipped for an hour, however if opening and closing the bag to deliver products this would allow air circulation.
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