Potato chip packaging bags usually use multi-layer composite materials to ensure the freshness and quality of the product. The combination of these materials can provide protective properties, extend the shelf life of potato chips, and prevent the effects of oxygen, moisture, and light on the product. Common potato chip packaging materials include:
Polyethylene (PE) : used as the inner layer, with excellent moisture resistance, can prevent the impact of moisture on potato chips, maintain the crisp taste of potato chips.
Aluminum film: Usually acts as a barrier layer to prevent oxygen and light from entering the package, maintaining the freshness and taste of potato chips.
Polyester film (PET) : used to provide clarity and strength of packaging so that consumers can see the product.
Nylon (NY) : has good barrier properties, used to slow the penetration of gas, help extend the shelf life of potato chips.
Polypropylene (PP) : Often used in the outer layer of packaging bags to provide additional moisture resistance and strength, while also helping in the printing of packaging.
The combination of these materials depends on the design of the package and the required protective properties. The use of composite materials can ensure that the packaging has a variety of characteristics to meet the various needs of food packaging. In addition, some packaging may use environmentally friendly materials to reduce the impact on the environment. The food packaging industry is constantly exploring innovations to provide more sustainable and efficient packaging solutions.
In addition, the potato chip packaging will be filled with gas, the main purpose is to protect the freshness and taste of potato chips. This process is known as air-conditioned packaging or fresh-keeping packaging and typically uses one or more gases, such as nitrogen, carbon dioxide and oxygen, to adjust according to the nature and needs of the product.
It is important to note that the type and proportion of filling gas selected needs to be determined according to the nature and preservation needs of the particular food. Different gas combinations can provide different preservation effects. Air conditioning packaging technology is designed to maximize the quality of the food, ensuring that consumers have access to fresh, delicious chips when they open the package.
