Insulated Bag

Insulated bag is an item that can effectively insulate, and its insulation principle is achieved through the insulation structure of poor conductors. This structure means that the insulated bag is filled with a substance with poor thermal conductivity, such as air, wool, foam, etc. Because of the poor thermal conductivity of the substances, they can prevent the conduction of heat for a certain period, achieving the effect of insulation.

The Material of Insulated Bags

Insulation bag is a commonly used insulation tool in modern life, which can be used to keep food warm, cold and hot drinks warm, and is convenient and practical. However, the material inside the small insulated bag is an important factor affecting its insulation effect.

Foam polyurethane material is one of the common internal materials for insulation bags, which has good insulation performance and can effectively maintain the temperature of food. This material has a low density, good insulation effect, lightweight, and good flexibility, making it suitable for relatively long periods of insulation and cooling. It is commonly used in insulation boxes, automotive insulation bags, etc. However, this material also has disadvantages such as inconvenient cleaning, easy odor generation, and easy cracking, which require attention to maintenance and upkeep.

Aluminum film composite material is also one of the common internal materials of food delivery bags, which has excellent insulation performance, can effectively isolate the difference between the external environment and internal temperature, and maintain the temperature of food. This material has a low density, and good flexibility and is easy to clean. It is suitable for relatively short periods of insulation and cooling and is commonly used in portable insulation bags, portable insulation bags, etc. However, this material also has drawbacks such as inferior insulation effect compared to foamed polyurethane materials, easy deformation, and easy wear, which need to be noted when selecting.

Gas column membrane material is one of the latest internal materials for insulated bags, composed of many small airbags, with good insulation and cold retention performance, and can effectively prevent shock and pressure. This material has extremely low density, is lightweight, has good flexibility, and is easy to clean. It is suitable for relatively long periods of insulation and cooling and is commonly used in refrigerated boxes, food transportation insulation bags, etc. However, this material also has the problem of a slightly inferior insulation effect compared to foamed polyurethane materials and a higher price point.

The Function of Insulated Bags

Insulation and cooling are the basic functions of insulated bag for food. It is a special bag with a short-term insulation effect. It can maintain both cold and hot. The insulation layer of the product is made of pearl cotton and aluminum foil, which can provide a good insulation effect. The insulation bag must be durable, have excellent impact resistance, not easily break under pressure or impact, and will not leave scratches. Sealing is the primary consideration when choosing insulation bags. Sealing is a necessary condition for food to be stored in memory for a long time. Finally, the insulated bag for food delivery can keep food fresh. The moisture permeability of good insulation bags is many times lower than that of similar products, and the preservation time is longer.