Leak proof insulated bag
Watertight Design for Wet and Liquid Items
This leak proof insulated bag features a three-layer structure designed for transporting wet, liquid, and temperature-sensitive items. The outer layer uses 420D or 600D oxford cloth for durability and wear resistance. The middle layer is made from EPE foam with a thickness of 8 to 12 millimeters for insulation performance. The inner layer uses heat-sealed seamless PEVA or TPE waterproof film to improve leak resistance. Common sizes include 30×22×26cm and 35×28×32cm. The closure uses a TPU-coated waterproof zipper, and all seams receive additional heat-sealing treatment. The handles are made from webbing, and an optional shoulder strap is available. This leak proof insulated bag can maintain temperature for 6 to 10 hours and carry 8 to 15 kilograms. The inner lining is designed to meet IPX4 leak-resistant performance requirements.
The key feature of this leak proof insulated bag is its sealed waterproof structure. Standard insulated bags can keep items cold, but melted ice or liquid may leak through stitched areas during transportation. This design helps prevent that issue through a seamless heat-sealed inner film structure. The complete inner lining reduces potential leakage points, while additional heat-sealing treatment strengthens the seams. The TPU-coated waterproof zipper provides extra protection against moisture entering from the opening area. It is suitable for carrying ice, seafood, frozen products, and beverages. The smooth inner surface is easy to clean and helps prevent unpleasant odors from remaining inside after use.
Strict Quality Control for Leak Prevention
Our production workshop applies strict quality control during manufacturing of this leak proof insulated bag. The heat-sealing process requires precise control of temperature and pressure. If the temperature is too low, the sealing strength may not meet requirements. If the temperature is too high, the waterproof film may be damaged. Our operators receive professional training and adjust equipment parameters according to different materials.
After each heat-sealing process, our quality inspectors perform water resistance checks. They fill the bag with water for inspection and carefully check the sealed areas for possible leakage points. Only products that pass inspection continue to the next production stage. Compared with standard insulated bags, this product requires more inspection procedures. This additional quality control helps maintain stable performance and product reliability.
This leak proof insulated bag is suitable for seafood transportation, frozen food delivery, outdoor camping with ice, breast milk storage, and food delivery in rainy weather. Its sealed waterproof structure provides functions beyond standard insulated bags and is especially useful for applications involving liquids and moisture. We support custom samples and logo printing services. Customers can choose different sizes, colors, and customized designs. The minimum order quantity is 500 pieces. Sample development takes 5 to 10 days. Mass production takes about 25 days because the manufacturing process requires additional steps. We also accept third-party inspections.
Product Specifications
|
Parameter |
Specification / Option |
|
Material Structure |
Outer: Oxford cloth (420D/600D) + EPE foam (8-12mm) + Inner: Heat-sealed seamless PEVA/TPE waterproof film |
|
Common Sizes |
30×22×26cm / 35×28×32cm |
|
Closure Type |
Waterproof zipper (TPU coated) + Heat-sealed seams |
|
Handle Type |
Webbing handles + Shoulder strap (optional) |
|
Insulation Duration |
6-10 hours |
|
Weight Capacity |
8-15kg |
|
Waterproof Rating |
Inner lining IPX4 leak-resistant performance |
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