Heat resistance of kraft paper takeaway boxes: dual considerations of quality and processing methods- Xuancheng Bo Site Commodity Co., Ltd

Heat resistance of kraft paper takeaway boxes: dual considerations of quality and processing methods

In the fast-paced modern life, takeout has become an important part of many people's daily diet. And kraft paper takeaway boxes, with their environmentally friendly and degradable characteristics, have gradually become one of the mainstream choices for takeout packaging. However, for consumers, whether kraft paper takeaway boxes can withstand high-temperature food without deformation or leakage has become the focus of their attention. This issue actually depends on the specific quality and processing methods of kraft paper takeaway boxes.

Quality is the foundation and determines the bottom line of heat resistance
The heat resistance of kraft paper takeaway boxes first depends on the quality of its basic material-kraft paper. High-quality kraft paper, using high-quality plant fiber as raw material, has higher strength and better heat resistance after fine pulping and papermaking processes. Takeout boxes made of such kraft paper can maintain good morphological stability at room temperature and are not easy to deform. When exposed to high-temperature food, high-quality kraft paper can better resist the transfer of heat and reduce the risk of softening and deformation.

However, relying solely on the quality of the basic material is not enough. The heat resistance of kraft paper takeaway boxes also needs to be further improved through special treatment methods.

Special treatment: double protection of heat-resistant treatment and coating
In order to enhance the heat resistance of kraft paper takeaway boxes, manufacturers usually adopt two main treatment methods: heat-resistant treatment and coating treatment.

Heat-resistant treatment is to change the structure of kraft paper fibers through high-temperature baking or other physical and chemical methods to make it more stable in high-temperature environments. This treatment can significantly increase the heat resistance upper limit of kraft paper, so that it can withstand microwave heating or short-term high-temperature contact without deformation. The kraft paper takeout box after heat-resistant treatment not only maintains the original environmental protection characteristics, but also greatly broadens its use scenarios.

Coating treatment is to coat a layer of special heat-resistant material on the surface of kraft paper to form a dense protective layer. This protective layer can effectively isolate the transfer of heat and prevent kraft paper from softening and deforming due to high temperature. At the same time, the coating can also increase the waterproof performance of the kraft paper takeout box, preventing moisture in the food from penetrating into the box, affecting the taste and hygiene of the food.

kraft paper takeaway boxes that have been heat-resistant or coated are usually designed to withstand microwave heating or short-term high-temperature contact. This means that when consumers use these boxes, they can put hot food in them with more confidence without worrying about the box deforming or leaking.

How do consumers identify high-quality heat-resistant kraft paper takeaway boxes?
For consumers, how to identify high-quality heat-resistant kraft paper takeaway boxes? First, you can observe the appearance and texture of the box. High-quality kraft paper takeaway boxes usually have a smoother and more delicate surface without obvious flaws or damage. Secondly, you can ask the merchant or check the product description to find out whether the box has been heat-resistant or coated. Finally, you can also try to put a small amount of hot food in the box to observe whether it shows signs of deformation or leakage.

Of course, as consumers, we should also be aware that any packaging material has its use restrictions. Even if a high-quality kraft paper takeout box can withstand a certain amount of high temperature, it does not mean that it can withstand high temperatures indefinitely. Therefore, when using it, we still need to follow the product instructions and precautions to ensure the safety and hygiene of the food.