How To Distinguish The Quality Of Disposable Paper Cups

1. Smell
Open the outer packaging of the paper cup and smell the smell. A qualified paper cup should have no odor. Unqualified paper cups, such as those that use industrial paraffin and non food grade recycled PE instead of food grade PE for film coating, may have some unstable low molecular weight components free up and release odors. If hot water is used, the odor may be more pronounced, and such situations should be handled with caution.
2. Pinching
The national standard has requirements for the stiffness of the cup body and the strength of the cup bottom for paper cups. A paper cup made of soft material that easily flattens with a slight pinch may be a product that is cut corners and not easy to use. Using this paper cup to receive hot water can easily cause burns and other accidental injuries.
3. Photo
Fluorescent whitening agents are not allowed in paper cups. Some illegal products, due to the use of recycled paper and insufficient whiteness, are added with fluorescent whitening agents as raw pulp paper. Although there is currently no evidence to prove how much absorption of fluorescent agents can cause harm to the human body, fluorescent agents have been listed as one of the potential carcinogenic factors. If it contains fluorescent substances, ultraviolet light irradiation will emit blue fluorescence. Consumers can use this principle to conduct preliminary verification using a banknote detector that can emit ultraviolet light. Although fluorescent agents often do not penetrate and migrate quickly into food in the presence of biofilm, there is still potential harm. According to standards, if the area of fluorescence emitted by the cup body exceeds 5%, it is considered an unqualified product.