Which is safer, a paper lunch box or a plastic lunch box?

Health is the biggest factor that affects a person. Because health is the foundation of life, the most important thing for us is health. Don't ignore our health. Without health, there is nothing. Which of the following shared paper lunch boxes or plastic lunch boxes is safe? Which is safer, a paper lunch box or a plastic lunch box? 1

Paper bowls are characterized by safety, hygiene, lightness and convenience. It can be used in public places, restaurants and restaurants, and it is a disposable product. Qualified disposable paper bowls produced by regular manufacturers are naturally harmless, but some poor quality paper bowls can't be avoided in the market. The problems of unqualified disposable paper bowls are mainly in hygiene and performance indicators.

So which is safer, a disposable paper bowl or a plastic bowl?

in fact, as long as it is a qualified product that meets the relevant national standards, it is safe for normal use.

1. Are disposable paper bowls harmful?

Not all disposable paper bowls are harmful, only those that do not meet the national standards may be harmful to human body. Many restaurants have disposable paper cups, paper bowls and other tableware, and many customers think it should be at least more hygienic than plastic cups and bowls. In fact, some paper tableware is not safe and hygienic, mainly due to the following two reasons:

1. Unqualified sanitary indicators

Unqualified sanitary indicators are mainly manifested in unqualified evaporation residues. If calcium carbonate, talcum powder, paraffin wax, liquid additives, etc. are illegally added in the production process of disposable paper bowls, if users use this paper tableware for a long time, a large number of unknown substances may enter the human body, causing harm to the body, and there are risks such as lowering human immunity, causing various chronic diseases such as gallstones, kidney calculi, constipation and hematological diseases, and even causing cancer.

The unqualified hygienic index also shows that the decolorization test is not up to standard. National standards have clear requirements for pattern printing. Take paper cups as an example, there should be no printed patterns within 1.5 mm from the mouth of the cup and 1 mm from the bottom of the cup. In order to reduce the production cost, some disposable paper bowl manufacturers use unqualified ink for pattern printing. When a consumer uses a paper cup, the colored part of the paper cup will come into contact with the sweat on his lips or hands, and the unqualified ink often contains benzene and toluene, which will harm human health.

2. Unqualified performance

The unqualified items of disposable paper bowls mainly include leakage performance, sensory indicators and compressive strength. Han Yuming pointed out that the unqualified leakage performance and compressive strength will directly affect the use of consumers; The problem of unqualified sensory indicators is that the distance between the printing and the cup mouth and the cup bottom does not meet the standard requirements, which may lead consumers to directly contact the printing parts and ingest substances harmful to human body during use.

second, which is the safety point of disposable paper bowls and plastic bowls

Both disposable paper bowls and plastic bowls have different standards. If they do not meet the standards, there will be potential safety hazards, so we can't absolutely say which one is safe.

The inner wall of disposable paper bowls commonly used in the market is made of coated paper, which is the inner polyethylene plastic film. Nowadays, many paper cups use coated paper instead of paraffin. However, without the "protection" of paraffin wax, the outer wall of the cup may be moldy after being wetted, and the inner wall of the nested cup will be contaminated by mold. As for this kind of plastic film, if it is not a food-grade material, it will decompose harmful substances at high temperature.

now commonly used disposable plastic bowl materials are PP and PS. PP is resistant to high temperature and can be used for microwave. Generally, lock lock crisper on the market is made of PP.. PS is not resistant to high temperature, so it is often used in cold drink packaging. In the production process, disposable plastic bowls are more sanitary than paper bowls, because the production process of plastics is simple, and they are packaged immediately after molding and cooling at high temperature. Disposable paper bowls are printed, cut paper, attached with film, rolled, curled and so on, which are easy to be polluted during the period.

Therefore, both paper bowls and plastic bowls should meet the corresponding standards before they can be used safely. Which is safer, a paper lunch box or a plastic lunch box? 2

Glass crisper

Glass crisper includes three types, namely, lunch boxes made of borosilicate glass, microcrystalline glass and titanium oxide crystal glass. They can allow microwave penetration, and will not be deformed or have harmful components precipitated due to high temperature, and generally can withstand temperatures of 511℃~1111℃.

But some inferior glass containers are not suitable for microwave heating. Before buying, check whether the word "can be used by microwave heating" is marked on the exterior.

ceramic crisper

There are two kinds of lunch boxes made of ceramics, one is heat-resistant ceramics and the other is ordinary ceramics. Heat-resistant ceramics can be heated in a microwave oven, but ordinary ceramics are not so good.

If you like ceramic containers decorated with gold and silver, such as Phnom Penh bowls, they are not suitable for microwave heating, and can only hold hot meals that have just been cooked. Because bowls with gold or gold edges will generate electric sparks when heated by microwave, which will not only damage the microwave oven, but also have poor heating effect, so they are not suitable for microwave oven heating.

Plastic crisper

Plastic crisper has many advantages, such as light weight, portability, easy cleaning and good sealing performance compared with glass lunch boxes.

Plastic products often have a plastic classification mark, which is a triangular symbol consisting of three clockwise arrows, with numbers 1~7 in the middle of the symbol. Each number represents a different composition of plastic.

most of the plastic boxes that can be used for microwave heating are made of PP, numbered 5. PP, that is, polypropylene, is resistant to high temperature and will not produce harmful substances when heated, and can be used repeatedly after cleaning. If you want to choose a plastic lunch box, please look for PP.

There are a lot of tableware now, which looks like ceramics, but it is not when you touch it. This kind of tableware is called "imitation porcelain tableware". Imitation porcelain is a kind of plastic product similar to ceramics, and its full name is "[melamine formaldehyde plastic". Generally, this kind of plastic can only withstand the high temperature of 121℃ and the low temperature of -31℃. The imitation porcelain tableware made is beautiful and has no peculiar smell, and can be used to hold hot food just out of the pot, but no matter how high-grade imitation porcelain is, it is not recommended to put it in the microwave oven. Which is safer, paper lunch box or plastic lunch box? 3

It may not be what you think.

When buying some steamed stuffed buns and eggs for breakfast, merchants usually pack them in plastic bags. It is rumored that buying hot steamed buns for breakfast and putting them in plastic bags will make the plastic bags dissolve and release plasticizers harmful to themselves, which may increase the risk of poisoning if they are eaten in the body.

There are two main types of plastic bags in the market, namely polyethylene and polyvinyl chloride. The so-called "food-grade plastic bag" is actually a polyethylene plastic bag. The chemical structure of polyethylene is very stable, it is not easy to have chemical reactions, and its heat resistance is good, but the production cost is relatively high, so some unscrupulous merchants use cheap PVC plastic bags instead.

Because PVC plastics are prone to aging under sunlight, plasticizers must be added to PVC products to maintain their stability.

if food containing plasticizer molecules is ingested, it will be harmful to human body, for example, children may develop prematurely and affect their height after ingesting plasticizer.

The heat-resistant rifle of PVC is about 61~81℃, which is likely to decompose its components. If it penetrates into food, it will also pollute the food, and people are more likely to increase the risk of cancer if they eat it.

however, the country has formulated strict relevant standards for the material of food plastic bags. The oil-resistant temperature of polyethylene can basically be as high as 131~141℃, and the food-grade temperature is usually only 61~81℃, which will not cause the polyethylene plastic bags to melt.

The whole people are serious-Tencent news reporter once measured the temperature of many kinds of food just out of the pot on the roadside, and the highest temperature was about 61℃, so it is safe to eat.

Wang Juan, a teacher from the Food Science Teaching and Research Department of Chengdu University of Traditional Chinese Medicine, explained that the take-away boxes are mainly made of disposable plastic lunch boxes and paper tableware, which have certain acid resistance, oil resistance and salt resistance.

as long as the take-away box meets the national standards and is used once, there will be no problem and there is no need to worry about cancer. Therefore, everyone must choose qualified products when buying plastic bags, and don't be greedy for petty gains.

Of course, for the sake of environmental protection, it is recommended that you do not use plastic products for a long time. You can choose to bring your own glass bowl or other containers, which can be reused without releasing harmful substances, which is relatively good for protecting your health.

tips on choosing plastic bags, I suggest you know!

1. See if there is a "food use" sign on the appearance of the plastic bag. Usually this sign is usually on the front of the packaging bag, in a more eye-catching position.

2. Choosing a plastic bag depends on the design style, especially choosing the right style according to the items you need and putting it in the plastic bag. That will be more convenient and convenient for packaging. Plastic bags with wide handles will not have a serious sense of weight when carrying things, and will be more comfortable.

3. When buying plastic bags, you also need to check the tensile strength of plastic bags. Bags with poor tensile strength will be damaged during use, especially when carrying heavy objects, and it is easier to deform or break the handle.

4. Colored plastic bags mostly use recycled materials from waste plastics and cannot be used to hold food. Just like the thick black plastic bag used to buy aquatic products, it should be used as little as possible if it is unsafe.

5. Check the plastic bag for impurities. Put the plastic bag in sunlight or light to see if there are black spots and holes. Plastic bags with impurities must have used waste plastics as raw materials.

5. Smell the plastic bag for any peculiar smell, and whether it makes people feel sick. Qualified plastic bags should be odorless, while unqualified plastic bags will have various smells due to the use of additives.

6. Touch the surface of the plastic bag with your hands, which is smooth and nontoxic. If the color is mixed, it will be sticky and astringent to the touch, which is toxic.

7. When the qualified plastic bag shakes, it will make a crisp sound; Unqualified plastic bags are often "buzzing".

8. Put the plastic bag in the water and press it to the bottom of the water by hand. After a while, the non-toxic plastic bag will surface and the toxic plastic bag will sink to the bottom.