How to create a leak-proof ice pack backpack
An insulated cooler bag also known as a cooler bag or thermal bag, is designed to keep the temperature of its contents stable for an extended period. It uses insulation materials and construction techniques to minimize heat transfer between the interior and exterior of the bag. The primary goal is to slow down the exchange of heat with the surrounding environment, whether it's to keep the contents cool or warm.
1. Choose the Right Materials
- Backpack Material: Use waterproof fabric for the backpack, such as a blend of modified cotton and polypropylene fibers. These materials are treated to be water-resistant and durable.
- Ice Pack Material: For the ice pack, use polyethylene or polyamide for the outer shell, and fill it with a gel-like substance like carboxymethyl cellulose. This material turns into a gel when it absorbs water, preventing leaks.
2. Optimize the Sealing Structure of the Ice Pack
- Self-Sealing Design: Incorporate a self-sealing valve with a sliding anti-leak flap. When the ice pack is inverted or squeezed, the flap automatically slides to block the water channel, preventing leaks.
- Double Sealing: Place the ice pack inside a double-layered sealable plastic bag (like a Ziploc bag) to ensure no liquid escapes.
3. Enhance the Backpack’s Waterproof Design
- Waterproof Coating: Apply a waterproof spray or seam sealant to the backpack’s exterior to improve its water resistance.
- Internal Waterproof Liners: Add a waterproof liner or use a waterproof bag inside the backpack to separate items from the ice pack. This prevents water from melting ice packs from seeping into other belongings.
4. Pay Attention to Details
- Anti-Slip Features: Add anti-slip strips on the outside of the ice pack to prevent it from moving around inside the backpack.
- Regular Checks: Before use, inspect both the ice pack and the backpack for any signs of damage or tears to ensure they are leak-proof.
Established in 2004, Xiamen Obaili Manufacturing Ltd. has been specialized in making bags for 20 years. We are a professional bags manufacturer and exporter, focusing on the design, development and production of cooler bags, drawstring bags, travel duffel bags, backpacks, briefcases, travel bags bags and other outdoor leisure bags for travel, sports and camping.