Why are most garbage bags black?

Garbage bags are not only black, but also colorful, as for why black is commonly used because the cost of black is low, and the garbage is very messy and dirty, using black will be more beautiful, and you can't see the mess inside.

1.Garbage bag, as the name suggests, is a bag for garbage, a small bag, but it brings a lot of convenience to thousands of households, and it provides an important guarantee for environmental protection, and even conducive to garbage classification. But garbage bags are mainly made of plastic, and the plastic ones are refined from petroleum, and it takes about 200 years for garbage bags to rot when buried in the ground, and they seriously pollute the soil; If the incineration method is adopted, harmful smoke and toxic gases will be produced, and the environment will be polluted for a long time.

Hence many countries and regions.

The use of plastic bags has been banned or restricted. San Francisco, USA.

The City Council passed a bill banning the use of plastic bags in supermarkets, pharmacies and other retailers. In Los Angeles.

and other cities, and began to launch plastic bag activities. Some places in Canada, Australia, Brazil and other countries have also introduced regulations to ban plastic shopping bags or paid use.

2.Most of the plastic bags used for daily shopping are plastic garbage bags made of petroleum, which is a huge waste of resources and environmental pollution due to the huge amount of use. It takes about 200 years for plastic bags to rot when buried in the ground and seriously contaminate the soil; If the incineration method is adopted, harmful smoke and toxic gases will be produced, and the environment will be polluted for a long time.

China uses 1 billion plastic bags every day to buy groceries, and more than 2 billion other plastic bags are used every day. Beijing discards 2.3 billion plastic bags every year, generating 140,000 tons of waste plastic packaging waste, accounting for the entire domestic waste.

of 3%. Shanghai produces 190,000 tons of waste plastic packaging waste every year, accounting for 7% of the total domestic waste. Tianjin also produces more than 100,000 tons of waste plastic packaging waste every year.

The plastic bags given away by the mall are mainly non-degradable, and if used as garbage bags, it will seriously harm the environment.

The reasons are as follows: 1. Carbon black is added in the molding process of plastic bags, which has the anti-aging function of shielding ultraviolet rays. Second, the strength of plastic bags can be increased, so as to ensure the mechanical properties of the number of garbage bags used in outdoor environments.

3. Opaque black can block the cluttered and filthy garbage that affects vision, so as to beautify the environment! But black, but also covers the plastic garbage bag material, many manufacturers, the use of very poor recycled materials to produce garbage bags, people can not see, but this kind of recycled material, tensile strength and toughness are very poor, the load is very little, hard garbage is easy to break! Therefore, the quality of black garbage bags on the market is very poor!

Some companies will also order some transparent garbage bags, the quality should be very good, and at the same time, it must be higher than the black garbage bags on the market, and this kind of transparent garbage bags are exported more!

In many public places and residential areas, black plastic bags are used to hold all kinds of domestic waste. Due to the diversity of waste, it is necessary for this plastic bag to have enough strength to bear the weight of the packaging, in addition to puncture resistance and tear resistance, to resist the piercing of hard garbage with edges and corners and the continued expansion of the crack after being broken, more importantly, many garbage bags are used outdoors, and the polyethylene (PE) used in plastic materials, especially garbage bags, is sensitive to ultraviolet rays in the sun and high temperature in summer, and will undergo aging degradation and reduce the mechanical properties of the material. To this end, black carbon black is added to the molding and processing of plastic bags, which has the anti-aging function of shielding ultraviolet rays, and also has a certain enhancing effect, so as to ensure the mechanical properties of plastic garbage bags in outdoor environments, and at the same time, opaque black can also block the messy and dirty internal garbage that affects vision, so as to beautify the environment.

<> personal opinions, including that sanitary napkins are normal supplies, there is really no need to hide them, that the use of sanitary napkins is a private matter of individuals, and that they have the right to take measures to protect them, and that black bags of sanitary napkins give people more choices, which is a good intention. 1. Sanitary napkins are very normal products in daily life, and there is really no need to hide them. In order to meet our needs in all aspects of our daily life, we need to use many items, and sanitary napkins are one of them.

Not only are these items used in large quantities, but almost everyone uses them, so it has become a normal thing in everyday life, and there is no need to hide it at all. 2. The use of sanitary napkins is a personal private matter, and you have the right to take measures to protect it. Each of us has our own personal affairs, and we don't want our personal affairs to be disturbed.

Although the use of sanitary napkins is commonplace, there is no need to make a big show for everyone to know. ......In fact, as a personal matter, you can take measures to protect the use of sanitary napkins and prevent this matter from being known to others. This is completely normal practice.

3. It is a gesture of kindness to use black bags for sanitary napkins to give people more choices. Packing sanitary napkins in a black bag is equivalent to giving the person who buys the sanitary napkin a variety of options: if you don't want your personal affairs to be known, you can use a black bag for sanitary napkins.

And if you don't care about this problem, Tong Xunchong can use other bags to pack sanitary napkins. ......In this way, everyone can have multiple choices according to their needs. ......Therefore, the method of using black bags to pack sanitary napkins is a kind gesture and a very intimate practice, which is worthy of recognition.

Nowadays, there are many businesses that have prepared some black bags, and when someone buys sanitary napkins, they use black bags. Some people say that this is a good practice, a kind of thoughtfulness and care, but others say that it is not necessary at all. ......For this issue, personal views include that sanitary napkins are normal supplies, and for some people, they do not need to cover up, the use of sanitary napkins is a personal private matter, and they can take measures to protect this secret, and black bags of sanitary napkins give people more choices, which is very intimate.

1. Sanitary napkins are very normal items in daily life, and for some people, they do not need to be covered. In daily life, in order to meet our needs in all aspects, we need to use many items, and sanitary napkins are one of them. ......This kind of item is not only used in large quantities, but also used by almost everyone, so it has become a very normal thing in the daily life of girls, and for many girls, this matter does not need to be covered up at all, and it can be purchased generously.

2. The use of sanitary napkins is a personal matter, and you should take measures to protect this secret. Each of us has our own personal affairs, and none of us want our personal affairs to be disturbed. ......Although the use of sanitary napkins is a common thing, there is no need for everyone to know about it.

In fact, as a personal matter, you can take measures to protect this secret and not let others know about it on the issue of using sanitary slag towels. It's normal to do this on your own.

3. Using black bags to pack sanitary napkins gives people more choices, which is very intimate. Although some people don't think that buying sanitary napkins is not necessary to hide, there are people who do not want this to be known to others. ......Therefore, the practice of using black bags for sanitary napkins is equivalent to giving the person who buys the sanitary napkin another option:

If you don't want your personal affairs to be known, you can use a black bag to pack Liang Tangerine sanitary napkins. And if you don't care about this problem, you can buy sanitary napkins generously. ......In this way, each of us has a choice that meets our needs, which is a good thing, and the business's approach is thoughtful and worthy of recognition and praise.

The black plastic bag absorbs more solar energy, enters the internal energy more, the local temperature rises rapidly, the water heat transfer is also more, the annual water temperature is also very high, the black plastic bag absorbs various colors of light, infrared, can better absorb solar energy, and for the internal energy.

The black balloon is not reflective and absorbs a lot of heat, while the colorless and transparent balloon has a certain reflection and does not absorb as much heat as the black one. The black one may be sunburned.

Absorption of solar energy in the research process, the modulus relationship between the surface colors, control the quality of water, the initial temperature, the same time, the absorption of solar energy through the study of temperature changes, the use of control variable method, water quality, initial temperature, the same time under the premise of the black plastic bag water temperature rises, so the surface area of the solar water heater. Black is preferred.

The food-grade plastic bags are white, and the black you say is the garbage bags.

Black is inexpensive, and because it is opaque and can protect privacy, it is black for the blue.

There are all kinds of colors, but black has the lowest cost.

Used plastic bags are classified as dry waste. Other garbage, also known as dry garbage, refers to other domestic wastes other than hazardous garbage and kitchen waste. This kind of garbage will not rot, and most of the harm is small, but it has no reuse value, such as construction waste, domestic garbage, etc.

Generally, landfill, incineration, sanitary decomposition and other methods are used, and some can also be solved by biological methods, such as earthworms.

Specific classification. 1) Paper, plastic, glass, metal waste in the non-avoidable part.

Such as napkins, toilet paper, diapers, dog urine pads, stained paper, desiccant, stained plastic, shatterproof bubble wrap, disposable lunch boxes, glue products, mirrors, etc.

2) The part of the textile and burial weaving, wood and bamboo wastes that cannot be buried.

Such as mops, rags, bamboo products, disposable chopsticks, branches, nylon products, woven bags, old towels, underwear, etc.

3) Dust, bricks, ceramics, and other mixed wastes.

Such as cat litter, cigarette butts, large bones, hard shells, hard fruits, hair, dust, slag, plasticine, space sand, ceramic flower pots, ceramic products, products with complex composition, etc.

Summary. If it is garbage that does not belong to the above three types of garbage, then it should be put in the dry garbage can, because dry garbage is garbage in addition to the above three types of garbage. When throwing plastic bags, you should pay attention to the garbage in the plastic bags before disposing of them.

If there is wet garbage such as food scraps and leftovers, then the wet garbage should be emptied in the wet bin first, and then the plastic bag should be thrown into the dry garbage can, which is the correct way to separate garbage.

Hello dear! "The plastic bag after use belongs to dry garbage, because the plastic bag is not easy to rot, so it is not wet garbage, the plastic bag after use has been stained with dirt, and it can not be reused, but it is not harmful to the surrounding environment.

If it is garbage that does not belong to the above three types of garbage, then it should be put in the dry garbage can, because dry garbage is garbage in addition to the above three types of garbage. When throwing plastic bags, you should pay attention to the garbage in the plastic bags before disposing of them. If the Lingqiao fruit contains wet garbage such as food residues and leftovers, then the wet garbage should be poured into the wet garbage can first, and then the plastic bag should be thrown into the dry garbage can, which is the correct way to classify garbage.