Insulated Bag Materials: EPE, Lining & Closures
Specify outer fabric, EPE foam, foil-facing, lining and closure. Learn what to confirm in a sample and how to define a complete pack-out test.
Specify an insulated bag as a complete system: outer fabric, insulation, lining, closure, contents and coolant. A material name or a single thickness does not establish the thermal performance of the finished shipment.
What to compare
| Component | Specify | Confirm before ordering |
|---|---|---|
| Outer fabric | Non-woven or other specified fabric | Composition, fabric weight, colour, print method and handle reinforcement |
| Insulation layer | EPE foam or specified composite | Thickness, density, coverage and construction |
| Inner surface | Foil-faced or other specified lining | Exact contact material, seams and relevant compliance documents |
| Closure | Zipper, hook-and-loop or agreed seal | Opening method, overlap and repeated-use requirements |
| Coolant | Ice packs as specified | Conditioning, fill weight, quantity and position in the pack-out |
Match the test to the delivery route
Record the initial product temperature, packed mass, coolant preparation, ambient profile, transit time and frequency of opening. Define where temperature is measured and the acceptable range. Evaluate the complete pack-out with the outer carton or delivery container that will actually be used.
Avoid assumptions that change the outcome
- A silver appearance does not establish material composition or food-contact compliance.
- Published factory capacity is not an individual order lead-time guarantee.
- Thermal performance needs relevant test evidence; do not transfer another product’s rating.
This is a purchasing reference, not a product test report or regulatory certification. Confirm the final construction and requirements for your destination market.
Related product families
About this guide and its sources
YUANEN publishes this purchasing reference using its product catalogue, sample photographs and specification information. Confirm the construction and order terms for your selected product; this guide does not establish a tested cooling duration or certify a shipment.