Heavy Duty Insulated Bag

This heavy duty insulated bag features a three-layer structure designed for demanding transportation needs. The outer layer is made from 600D oxford cloth, which provides strong wear resistance and durability. The middle layer uses EPE foam with a thickness of 10 to 15 millimeters, offering much stronger insulation performance than standard insulated bags. The inner layer is made from food-grade aluminum foil for improved temperature protection. Common sizes include 35×25×30cm and 40×30×35cm. The handles use wide and thick webbing with a width of 5 centimeters and reinforced stitching for higher load capacity. The closure system combines double-track zippers and velcro to create a double seal. This heavy duty insulated bag can maintain temperature for 8 to 12 hours and carry 10 to 20 kilograms of products. A rigid bottom board is added for extra structural support.

This heavy duty insulated bag is designed for heavy loads and long-distance transportation. The enhanced EPE foam layer helps slow down heat transfer and maintain stable internal temperatures for extended periods. The 8 to 12 hour insulation performance can support a full day of delivery, outdoor activities, and transportation tasks. The 600D oxford fabric provides strong tear resistance and can handle frequent handling in daily use. The reinforced bottom board prevents the bag from losing its shape when fully loaded. The double-seal design provides better protection by combining the zipper closure with a velcro cover, helping reduce temperature loss during transportation.

Reinforced Construction for Demanding Use

Our sample development team has optimized this heavy duty insulated bag structure through multiple production tests. Thick EPE foam can move back into shape during cutting, which requires special handling methods. Our workers use dedicated cutting tools with controlled pressure to achieve clean and accurate edges. The bonding and sewing of the three-layer structure require precise machine adjustments. Our production team adjusts sewing tension carefully to ensure smooth stitching through all material layers without skipped stitches.

The rigid bottom board installation is another important design feature. We create a dedicated pocket inside the bottom section to hold the board securely. The board stays in position during transportation but can also be removed easily for cleaning. This practical design improves both durability and user convenience. It has received positive feedback from customers.

This heavy duty insulated bag is suitable for long-distance cold chain delivery, outdoor barbecue camping, medical reagent transportation, large-volume food delivery, and seafood transportation. Its durable structure is designed for repeated use in demanding environments. We support OEM and ODM customization services, including different sizes, colors, and logo printing options. The minimum order quantity is 500 pieces. Sample development takes 5 to 10 days. Mass production takes about 25 days because this product requires more manufacturing steps than standard insulated bags.