1.When ordinary consumers choose a disposable paper lunch box, the first thing to consider is the compressive strength of the paper bowl
Does it change when hot and steaming food is loaded! The simplest method is to pinch the wall of the paper bowl with your hand. If the thickness of the wall is suitable and it is not easily deformed when pinched, you can choose to purchase it.
2. It depends on the fluorescence performance of the paper bowl
At home, we can use the purple light used for banknote verification to illuminate. Optical brightener is not allowed to be added to food paper. If Optical brightener is exposed, this paper bowl will be unqualified! Of course, if you don’t have a purple light at home, you can use A4 printing paper for comparison. If you buy a paper bowl that is as snow-white as A4 paper, or even whiter than A4 paper, it may be a bit problematic. At this point, hurry up and buy a purple light to illuminate it, or send it to a professional testing agency for testing.
