Thermal bags help limit heat exchange between goods and the environment. Effectiveness depends on insulation, packaging, inner box and delivery time. The visible silver lining is not enough to determine the capabilities of the entire bag.
Measure the completed set of goods
Pack representative orders with correct boxes, lidded cups, trays and accessories. Measure when aligned in the direction of intersection. The bag needs to be stable at the bottom and close tightly, without having to tilt the box or squeeze the cup.
Separate hot and cold demand. If combined delivery, determine how to divide the set of goods; The lining does not by itself prevent any thermal effects between items sharing a compartment.
Unify the structure instead of calling it "heat retention"
| Ingredients | Things to confirm |
|---|---|
| Bag body | Materials, stability and carrying |
| Insulation layer | Configuration and technical information |
| Lining | Cleaning, joints and intended contact |
| Mouth of the bag | How to close after lining up |
| Straps and bottom | Load of cargo set, lifting position |
If the lining may come into direct contact with food, the purpose should be confirmed. Even if you use a sealed box inside, you still need to watch for leaks, condensation, and how to clean the bag.
Try using a representative itinerary
Record the batch, initial temperature if measured, environment, number of openings and transit time. Compare samples under equivalent conditions. Unify location and measuring equipment; The feeling of touch is just a sensory observation.
One try does not create a commitment to keep hot or cold for a fixed number of hours for every order. Food safety requirements are part of the food delivery process and need to be determined individually by the person in charge.
Observe the operation before adding material
If the mouth does not close completely or must be opened continuously, adjust the packing and size of the bag before adding insulation. Check the straps and bottom when full.
With two lunch boxes and two glasses, the model fits the box but the cups are tilted and need to be adjusted to the arrangement or tray. Heat retention and stability must be evaluated together.
Information needs to be sent to exchange specifications
Send SquareBag the usual box size, cup size, weight and delivery time to try out the bag specifications. If there are old results, add measurement conditions and points you want to improve.
Explore Thermal delivery bag in the SquareBag category.
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