How can takeaway bags prevent soup leakage through precise structural design?
Publish Time: 2024-12-11
In today's booming modern takeaway industry, preventing soup leakage is one of the key considerations in the design of takeaway bags, and precise structural design has become the core means to solve this problem.
First of all, the layered structural design of takeaway bags is unique. Usually, multi-layer composite materials are used, and the inner layer is mostly made of polyethylene (PE) or polypropylene (PP) film with waterproof and oil-proof properties. This layer is in direct contact with the food, and its smooth surface can effectively reduce the adhesion of soup. Even if a small amount of soup is spilled, it can form water droplets on its surface and is not easy to penetrate. The middle layer may be a paper or non-woven material with certain strength and cushioning properties. It not only provides the necessary support for the bag to prevent the soup from overflowing due to external force squeezing, but also absorbs a small amount of soup that may seep out to a certain extent, playing a secondary protection role. The outer layer is generally a paper or plastic film printed with brand logos and promotional information, which has waterproof and moisture-proof functions, further blocking the intrusion of external moisture and ensuring that the environment inside the bag is relatively stable.
Secondly, the design of the bag opening and seal is precise and strict. The bag mouth is usually specially treated, such as using a curling design or adding a waterproof strip. The curling can increase the thickness and hardness of the bag mouth, making the bag mouth tighter when closed, effectively preventing the soup from leaking out of the gap at the bag mouth. The waterproof strip is like a solid line of defense. Even if the bag mouth is not completely flat, it can firmly seal the bag mouth with its good adhesion and waterproof properties. There are also various sealing methods, the most common ones are self-adhesive sealing and zipper sealing. The self-adhesive sealing is simple and convenient to operate. By precisely controlling the viscosity and width of the adhesive layer, it ensures that a tight seal can be formed after pasting, and it is not easy to loosen due to bumps during transportation. The zipper seal can be opened and closed repeatedly, which is convenient for customers to check the food. Its tight bite structure can accurately prevent the soup from leaking, providing a reliable sealing guarantee for takeaway food.
In addition, the bottom structure design of takeaway bags should not be underestimated. The bottom adopts a special folding process or reinforcement design to increase the load-bearing capacity and sealing of the bottom. For example, some takeaway bags have a double-layer folded and sealed structure at the bottom to form an independent soup storage space. Even if the lunch box is tilted or a small amount of soup leaks out, it will be confined to this space at the bottom and will not spread to the entire bag, thus avoiding soiling other items or causing a wider range of leakage.
In summary, through the carefully designed layered structure, strict bag mouth sealing treatment and comprehensive bottom structure, takeaway bags have successfully solved the problem of soup leakage in takeaway delivery with their precise structural design, providing consumers with a cleaner and more secure dining experience, and laying a solid foundation for the healthy development of the takeaway industry.
