The invention and application of coated paper for disposable paper cups have been around for a long time, and for those unfamiliar with it, they may not know the secrets behind it. Below, I will take you into coated paper.
According to the characteristics of different foods and the needs of customers, different types of films have emerged in the market, such as PE film, PLA film, and PP film. Disposable paper cups and bowls not only hold hot and cold drinks, but also contain different foods such as soup, ice cream, instant noodles, etc.
In the past, 16oz Coca Cola single layer cold drink cups were mainly coated with PE film on the inside and wax on the outside to isolate water vapor. Now, this type of cup has been basically phased out and replaced by double-sided PE coated cups. In addition to PE coating, which is a common coating, there are also some customers who have high environmental requirements and require food packaging to be completely biodegradable. So these paper cups are usually coated with PLA film (polylactic acid, biodegradable material), which is a completely biodegradable material. After use, the paper and film can all be naturally degraded.
In addition, some food packaging emphasizes the function of microwave fast food, so this requires paper bowls and other paper containers to be coated with PP to achieve the goal of long-term microwave heating of food. The latter two are new trends and directions in the manufacturing and development of paper cups in recent years. Especially with the application of PLA coating, paper container packaging has truly achieved the goal of biodegradability and environmental protection.
These are the commonly used coated paper in the market. When using coated paper, we should not only pay attention to the convenience it brings, but also prevent it from polluting the environment.