Disposable paper cup looks like environmental sanitation, convenient, but like all commodities, its compliance status is also unknown. After all, it is a "channel" commodity, and we must strictly control physical and mental health. Some people say that the inner cavity of disposable paper cup is coated with a thin layer of wax. If the temperature of water exceeds 40 ℃, it will melt.

In fact, a paper cup in China at this stage can be divided into three types according to their main uses: cold food cup, winter hot drink cup and ice cream cup. According to the coating of disposable paper cup, it can be divided into three types: Waxing cup, high pressure polyethylene coating Cup and straight wall two-layer cup.

Obviously, the purpose of waxing is to prevent moisture. Since the wax will melt when heated, the waxing cup can only be used as a cold food cup.

If you want to use wax cups for hot drinks in winter, you must add a layer of moisturizing lotion. The two layer cup is made of this kind of coating. And because of the good fire resistance of the two layers, it is common to make hot drinks cups and ice cream cups in winter.

The high-pressure polyethylene coated cup is covered with high-pressure polyethylene chromatography on its wall. Its advantages are that both cold food and hot drink in winter can be easily handled, and the surface is smoother. The outer edge of the water cup can be easily packaged and printed with exquisite pattern design. Therefore, it is favored by the Chinese fast food manufacturing industry.

Therefore, it can be seen that when purchasing disposable paper cups, the types of disposable paper cups should be identified clearly. If disposable paper cups in public places are applied, the disposable paper cups of some large and medium-sized chain fast food restaurants can still be used at ease. However, it is difficult to ensure the common disposable paper cup in the food shop without hygiene license in harsh environment.

For a waxing disposable paper cup, the temperature of boiling water should be at least 50 ℃ higher than that before paraffin melting. What's more, the disposable paper cup is made of food grade stainless steel paraffin. Even if it is accidentally drunk into the abdomen, there is no need to worry about it. The point of paraffin is not easy to cause adverse effects on the human body. The real risk of using cold food cup to hold boiling water depends on the fact that the disposable paper cup will lose its moisture resistance after dissolving paraffin, which is very easy to be penetrated by boiling water and cause water seepage and burn users.

How to choose a safe disposable paper cup?

First of all, we need to understand a wrong idea. When using disposable paper cups, it is better not to drink the first cup of water. It is better to throw away the water after four or five minutes, so that the harmful substances in the disposable paper cup can be fully evaporated.

In fact, a lot of harmful substances will be added in the processing of disposable paper cups, such as preservatives applied by illegal manufacturers, and lead, arsenic and solvents are carried by the color paste and modifier used for the design of painting patterns on the surface of disposable paper cups. In addition to the manufacturer's problems, the disposable paper cup will also be polluted by microbial strains in the whole process of storage.

What you want to know is, with boiling water, only five minutes is enough to remove the harmful substances in the cup?

The answer goes without saying that all disposable paper cups up to the standard have undergone disinfection and sterilization. If it is feasible to eliminate bacteria in this way, it has already been used to produce safer disposable paper cups in industrial production, and can customers do it themselves?

It is difficult to estimate the total number of pathogens and the amount of other hazardous substances for unqualified disposable paper cups. Even if the method of opening small bubbles for five minutes has a certain effect, it can not ensure that the harmful substances can be completely removed or reduced to the safety standard. The best way is to use disposable paper cups that meet the standard. For disposable paper cups that meet the standard, it is not necessary to throw away the first cup of water.

However, we still propose that if it is a disposable paper cup up to the standard, the first glass of water can be drunk, and if it is a disposable paper cup that does not pass the standard, the first bowl of water does not need to be drunk.

When choosing disposable cups, it's the same as buying food. You must see that the disposable paper cup packaging has clear QS logo, manufacturer information content and date of manufacture. You don't have to be greedy for cheap and buy disposable paper cups without cards. In addition, we should also see clearly the application field marked on the package. Reliable disposable paper cup will indicate the available temperature of this disposable paper cup. If you buy a cold food cup, you must not use it to hold boiling water, so as to prevent water seepage and burn!