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How many hours can 5mm foam cooler bag hold ice
How Many Hours Can 5mm Foam Cooler Bag Hold Ice?
For procurement professionals evaluating Cooler Bags, understanding ice retention for 5mm foam insulation is essential for matching product specifications to use cases. Based on manufacturer testing data, a 5mm foam insulated delivery bag typically holds ice for 6 to 12 hours, depending on construction quality and usage conditions
5mm Foam Ice Retention Benchmarks
The wide performance range reflects that seal quality and liner material significantly impact thermal efficiency. For food delivery bag applications, 5mm foam paired with PEVA liners and welded seams delivers optimal results within this thickness category .
Performance Variables
Ice retention for 5mm foam Cooler Bags depends on:
Ambient temperature: Performance degrades significantly above 32°C (90°F)
Ice-to-contents ratio: More ice extends retention
Opening frequency: Each opening reduces internal temperature
For context, a premium cooler backpack with 25mm foam achieved 6.8 hours retention in controlled testing, while 5mm lunch bags typically report 6-8 hours under optimal conditions .
Xiamen Obaili: Customization Strength
Xiamen Obaili Manufacturing Ltd. , a factory since 2005 with over 8 million thermal solutions delivered, specializes in matching insulation thickness to application requirements . While 5mm foam is suitable for standard Delivery Bags and short-duration food delivery bag applications, Obaili's documented Australian project demonstrated that upgrading from 20mm to 25mm foam was necessary to achieve 6.8-hour retention for a premium cooler backpack order .
Customization options include:
5mm to 25mm foam thickness based on required ice retention hours
Food-grade PEVA liners (leak-proof, FDA-compliant)
YKK waterproof sealed zippers preventing thermal leakage
100% pre-shipment water injection testing
Selection Recommendation
For standard Delivery Bags and insulated delivery bags requiring 4-6 hours of ice retention, 5mm foam with PEVA liner is appropriate. For cooler backpack or premium food delivery bag applications demanding 6+ hours, specify 20-25mm insulation
About Xiamen Obaili Manufacturing Ltd.
Obaili manufactures Delivery Bags, food delivery bag systems, Cooler Bags, insulated delivery bags, and cooler backpack solutions with customizable insulation thickness and FDA-compliant materials.
