Case Study: EVA Case for Ice Packs

Apr 23, 2018
Application: Ice Packs
Customer’s Requirement:
1. Keep ice packs cold

2. A flap with zipper around

This is a customer who specialize in sporting recovery products. In Apr. 2018, The customer connected with us, he would like to develop an EVA carrying case for his new item - ice packs. The carry case must be able to keep ice packs cold. The lining should be insulated material that can provide staying cold as the one on cooler bag.

What the customer was worried about if an EVA case can keep cold? We ended up the worry quickly with professional knowledge. EVA foam has ability of insulation which can keep warm and keep cold. Also, the case goes with insulated lining (PEVA), it can increase insulation performance.

Challenge For Lining
An EVA foam laminated PEVA can’t get thermoforming process, because PEVA can’t get high temperature. Our develop team figured out by unique sewing, made it as perfect lining.

Challenge For A Flap With Zipper Around And Keeping Cold
The customer wanted to have a internal flap with zipper around. We made the first version sample, but found out there was a problem. Based on zipper stitched to the internal case around and Inside rigid PVC flap, it was hard for zipper to go smoothly in the corner, and zipper looks terrible (waved) actually. We made a new solution that is to change zipper around to zipper going down center, and rigid PVC flap become flexible EPE foam flap. This action not only solve the problem above, but also bring a profit. EPE foam and better seal can help increasing keep-cold performance mostly. We used first version sample to test with ice packs. It could keep cold, but not enough for us. Now, this EVA carry case can keep cold for up to 6 hours!

“Amazing, well done!” the customer said, once he received the sample. It is happy for us to serve each customer well and solve each problem we met.

EVA carrying case for Ice Packs

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