What is the disposable plastic lunch box?

With the acceleration of people’s life rhythm, the rise of the takeaway industry has increasingly entering people’s lives.

The common disposable lunch boxes on the market are mainly:

Polypropylene (PP), polystyrene (PS), etc.

These lunch boxes are thin and efficient and cheap, but are they really as clean and hygienic as their appearance?

Calcium carbonate

In order to reduce the cost of raw materials, manufacturers use a large amount of inorganic mineral powder as fillers during the food plastic packaging processing process [1].

Calcium carbonate is one of the very prominent advantages. However, in order to reduce costs, individual manufacturers want to increase the amount of calcium carbonate, and the filling ratio is even 70%.

▲ Some advantages of calcium carbonate in the plastic processing industry (Figure source network; drawing: Baogai)

三句话,带你重新认识一次性塑料餐盒!

As we all know, the normal intake of calcium carbonate does not pose a threat to the human body, and can even replenish calcium.

But “excessive calcium carbonate” in food plastic packaging is not a good thing.

Research test indicates

When the proportion of fillers such as calcium carbonate and talc powder in the product is 70%large, a large amount of substances will be dissolved in the sample in 4%of the sample, which exceeds the requirements of relevant national standards.

(The acetate and orthopedane environment simulate the acidity and oily conditions of daily diet)

In order to ensure that calcium carbonate can be evenly scattered in the product, the manufacturer must use a coupling agent, dispersant, lubricant and other additives to activate during processing.

Of course, these substances should not enter our mouth, but if the lunch box is produced in inferior fillers, toxic and harmful substances will migrate to food, which will cause gallstones, lead poisoning, and even cancer.

Call for a dumpling takeaway and dipped in old vinegar. This small plastic lunch box also brings some colorless and tasteless small dipping sauce?

Plasticizer

As an important type of chemical product additive, plasticizers can be legally used in industrial use, and exist in food packaging, cosmetics, medical equipment and environmental water.

Diabenate (PAES)

It is the most commonly used plastic product plasticizer, which is generally used in plastic products, which enhances its flexibility and easy to process.

But on the other hand, it also has physiological toxicity such as breaking reproductive function, carcinogenicity, distortion, and mutagenicity.

If foods contaminated with plasticizers often, the probability of human endocrine system and reproductive system disorders and decreased immunity will be greatly increased

[2]

So one day I heard my colleagues coming back and said to you, “The doctor said that I have taken too much takeaway to take a takeaway.” He may really not lie to you.

▲ “identity information” of poisonous plasticizer dental acid ester

From the lunch box to the food: How did the plasticizer come out?

Generally, pollutants are entered the human body through three ways of feeding, breathing and skin penetration. Feeding is the main exposure way.

Earlier, we mentioned that “foods contaminated with plasticizers often” are the reason for the probability of “poisoning”. If you know that it has been exposed to plasticizers, everyone is a small clever, and of course it will not eat it anymore.

The actual situation is that the emergence and metastasis of the plasticizer is silent.

In the process of contacting the plastic lunch box in takeaway food, the plasticizer in the lunch box will migrate to the food with the changes in the food environment to enter the human body and threaten human health.

In these processes, we can’t see or hear.

▲ Experiments show that plasticizers may be migrated to food (source of the picture: Guangzhou Chemical [3])

As shown in the figure, the migration rate of the three typical plasticizer molecules of DIBP, DBP, and DEHP.

The experiment selected pure water simulation water -based foods, 4%acetic acid simulation acid foods, 10%ethanol simulated alcoholic food, and orthopedic alkanes to be fatty foods, and examined its migration in different types of food environments [3].

It is not difficult to find,

三句话,带你重新认识一次性塑料餐盒!

No matter what type of food solution environment, there is a migration of disposable plastic lunch boxes.

Among them, oil -fat foods are the most prominent.

三句话,带你重新认识一次性塑料餐盒!

Now think about the high -calorie supper that was indulgent, and the stomach accompanied by the calories is also the plasticizer that brings great harm to the human body.

Are you afraid?

Not only that, Zhejiang Taizhou Entry and Exit Quality Inspection Bureau has also done about

Microwave conditions

Study on the impact of the chemical migration of food contact materials [4].

The results show that as the heating length increases and the power increases, the amount of other substances in plastic containers will increase the amount of food to food.

From the pursuit of efficient stores pour the just -released meal in, to the hot takeaway you open, the plasticizer quietly migrates quietly in the place you can’t see.

▲ Takeaway has become an indispensable part of some people’s lives (Figure source network)

How to avoid inferior disposable lunch boxes?

The best way is to avoid using it!

But for the hungry workers who are tired for a day, cooking by yourself is a luxury.

Don’t worry, the non -toxic vanguard has compiled a lightning protection manual for you, and it is quickly collected!

Pay attention to identify inferior products

From the perspective of color, the qualified products are uniform and fineful;

However, the color of the unqualified product is dark, the color is not uniform, and the fluorescent substance is added individually. The color looks white.

From the perspective of taste, the qualified product basically does not have much taste;

And inferior products basically have a large odor.

From the perspective of feel, the qualified products are relatively soft, and it is not easy to rub with hands;

The surface of unqualified products is rough and poorly flexible, and it is easy to break the folding products by hand.

Pay attention to the use temperature of different lunch boxes

Material

PS

三句话,带你重新认识一次性塑料餐盒!

The lunch box is harder and easy to rupture. It is suitable for refrigerated foods. It is not suitable to heat the food together in the microwave oven.

PP

三句话,带你重新认识一次性塑料餐盒!

The lunch box has good heat resistance. The melting point is about 170 degrees Celsius.

However, it is worth noting that in order to save costs, some merchants will use different materials for the lid part of the lunch box, so it is best to confirm whether there is a PP logo on the lid.

▲ The tolerance temperature and avoidance conditions of different materials (worth collecting! Source: Wanlin@)

Pay attention to different food ingredients.

High -fat and high -sugar foods are not suitable for plastic lunch boxes.

Because the boiling point of the oil is easy to exceed the thermal heat resistance limit, chemicals such as oil, sugar and lunch boxes in foods are prone to chemical reactions, causing toxic substances to migrate and cause human damage. (Source: Hainan forbidden plastic)

Are you afraid?

Material