How to easily meet the needs of fresh-keeping in multiple scenarios through a PP Portable Sublimation Cooler Bag?

The main body of this refrigerated bag is made of polypropylene (PP) non-woven fabric or woven fabric, which has excellent tear resistance and load-bearing performance, is lightweight and has a stable structure. Compared with traditional heavy-duty insulation boxes, the PP material makes the whole bag easier to fold, store and carry, which not only saves storage space, but is also more suitable for daily travel, short-distance carrying and other needs.
PP Portable Sublimation Cooler Bag's body size is 52×48×16cm, which ensures storage space while maintaining a portable and flexible appearance ratio. PP Portable Sublimation Cooler Bag surface uses sublimation printing technology, which can realize pattern customization and high-definition image presentation, giving the product a richer brand or personalized expression space, especially suitable for corporate group purchases, customized promotional activities, environmental protection and public welfare gifts and other application scenarios.

Multi-layer structure design:

The internal structure of the refrigerated bag adopts a multi-layer composite material, taking into account both thermal insulation performance and practicality. Its structure is as follows:
The outer layer is made of 110G/120GPP non-woven fabric, which not only has excellent wear resistance and structural stability, but also its fibers are staggered by high-temperature melt-blown process to form a flexible and strong surface layer, which can effectively resist tearing and scratching even in frequent use or outdoor environments, and extend the service life. At the same time, the material is light in weight and has natural waterproof properties, which can effectively block moisture and rainwater from penetrating, and improve the convenience of carrying out. More importantly, the surface of PP non-woven fabric is flat, which is suitable for thermal sublimation transfer printing process, can clearly present pattern details and color levels, and provide an ideal carrier for brand customization and personalized design.
The middle interlayer uses 2mm/3mm/4mm thick EPE foam, which has excellent heat insulation and cold preservation performance. As a closed-cell foam material, EPE has extremely low thermal conductivity, which can effectively block heat and cold conduction, stabilize the temperature in PP Portable Sublimation Cooler Bag, and significantly extend the insulation or cold preservation time of food and drinks. At the same time, it has good rebound and cushioning properties, can absorb external impact during transportation, protect internal items from damage, and is especially suitable for carrying fragile or liquid containers. In addition, EPE material is light and environmentally friendly, does not contain Freon, and does not release toxic gases. It not only reduces the overall weight, but also meets the green and healthy use standards.
The inner layer adopts a triple combination structure of aluminum foil film, PET electroplating layer and LDPE plastic film to synergistically achieve efficient insulation, waterproof and food safety functions. Among them, the 0.063mm thick PET electroplated aluminum layer is vacuum aluminum-plated to form a high-reflectivity mirror material, which can effectively reflect external heat radiation, reduce the impact of sunlight or ambient temperature changes, and prevent heat loss in the bag to ensure constant temperature. The surface is smooth and tough, with good tear resistance and structural stability. On this basis, a 1mm thick EPE foam is added to the inner layer as a secondary insulation and buffer layer to further improve the thermal insulation performance, while providing soft protection for internal items to prevent damage caused by extrusion or collision. The 0.05mm LDPE film covering the innermost side has excellent waterproof and oil-proof capabilities. It can directly contact the food container to prevent soup and beverage leakage. At the same time, it is not easy to absorb stains and odors, easy to clean and reusable, fully meeting food-grade safety and daily hygiene needs.
The synergistic effect of such a multi-layer structure allows the cooler bag to keep food fresh and drinks cold for a long time. It is especially suitable for transportation and storage of cold drinks, cooked food, fruits, and fresh food, reducing the risk of food spoilage due to temperature differences.

Diversified application scenarios:

Daily commuting and lunch carrying: For office workers who bring their own lunch every day, the cooler bag has a moderate capacity and stable insulation effect. It can not only effectively preserve the temperature of the food, but also prevent the smell of food from overflowing. It is easy to clean and does not leave odor.
Outdoor picnics and short trips: The lightweight and portable structure, combined with large capacity and excellent cold-keeping performance, makes the cooler bag an ideal companion for picnics, camping, and short trips. It can carry cold drinks, snacks, fruits, cooked food, etc. to meet the needs of multiple people traveling.
Maternal and child travel and baby food insulation: For families with infants and young children, this product can be used to store bottles, breast milk, baby food, etc., to ensure that the food is at a suitable temperature and to ensure the safety of infants and young children's diet.
Shopping and fresh food transportation: When purchasing perishable items such as meat, seafood, and fruit, this refrigerated bag can be used as an environmentally friendly shopping bag to avoid food spoilage due to temperature changes, and provide protection for short-distance transportation of fresh food.