Can Stainless Steel Cups Make Tea?

In fact, on this topic, some media have paid close attention to it, and a related person made a special experiment: I found a custom vacuum insulated stainless tumbler China, put tea in it, and close it tightly The cups were left stationary for 72 hours. As a result, the cup "corroded". "Experts explain" that stainless steel contains chromium and is released into the tea.

Chromium is a toxic heavy metal, so it is concluded that tea cannot be made in stainless steel cups, it is toxic! This conclusion caused an uproar for a while. What about the facts?

The name "stainless steel" naturally makes people think that this kind of steel will not rust. In fact, stainless steel is not "the diamond is not bad", it is only relatively difficult to rust.

The corrosion resistance of the stainless steel vacuum eggshell thermos cup depends mainly on the content of chromium. When the content of chromium in stainless steel reaches 12%, in the atmospheric or oxidizing environment, chromium can spontaneously form a thin passivation film to prevent further oxidation and corrosion, so it generally does not rust in daily use. However, when encountering materials such as acids, alkalis, salts (the influence of alkaline substances on stainless steel is relatively weak) or the passivation film is damaged, corrosion may still occur.

In other words, it is necessary to corrode stainless steel for a long time before the visible corrosion results can occur. While the tea is nearly neutral, its ionic strength is very low, it is almost non-corrosive, and it is even less likely to cause visible corrosion within tens of hours.

Stainless Steel Vacuum Eggshell Thermos Cup

A large number of equipment in food production are stainless steel, which is more acidic and longer. If tens of hours of tea brewing can cause visible corrosion, then those equipment will not be replaced for a long time. The biggest possibility of "corrosion" in the above tests was the deposition of tea stains on the cups.

Hazard from dose:

Stainless steel does contain chromium, and it is theoretically possible for chromium to migrate to water. However, there are national standards for stainless steel for catering containers, which stipulate the migration amount under specific conditions.

Considering the health risks of chromium (especially hexavalent chromium compounds), countries around the world have strict regulations on the amount of chromium in stainless steel utensils. The relevant national standards in China stipulate that the chromium migration of stainless steel vessels should not exceed 0.4 mg / dm2, and the method of measuring this migration is to boil in a 4% acetic acid solution for 30 minutes and then soak for 24 hours. The pH value of 4% acetic acid solution is about 2.5. After throwing a piece of stainless steel in it for 30 minutes and immersing it for 24 hours, the chromium transferred per square decimeter surface should not exceed 0.4 mg.

Unlike acetic acid solution, tea water has only very weak acidity (the pH of tea water varies according to the type and concentration, usually between 5-7), and the corrosion effect on stainless steel is much less. Assume that tea with pH 5.5 is used for such an immersion experiment. To migrate 0.4 mg of chromium, it takes about 246 hours, that is, continuous immersion for 10 days. This is to ensure that no passivation film exists on the stainless steel surface. The response can only be achieved under the premise of always happening.

In the actual situation, the tea will not boil in the stainless steel cup for 30 minutes, and then considering the factor of the passivation film, the actual reaction speed will be slower. Therefore, as long as the stainless steel cup you use is a product that meets the standards, do not put a cup of tea for too long (if you really put the tea on for several days, mold and deterioration may be the first thing to worry about), you do n’t need to worry about the chromium that migrates The element is out of specification.

Food is such a complicated system. With the increasingly advanced detection technology, the detection of "harmful ingredients" is completely normal. But still the sentence: "Leaving the dose to talk about toxicity is a hooligan."

In reality, food is normally contained, and even if chromium is precipitated, it is far from being "harmful". The so-called "chrome released by stainless steel cups of tea is harmful to the human body", from the actual data, it is untenable. Hot sale stainless steel thermos cup is also the most mainstream tea set now.

What Are The Development Opportunities Of Non-Woven Environmental Protection Bags

Since the "Plastic Restriction Order" was promulgated, the plastic bag market has been gradually forced out of the packaging market by non-woven shopping bags, and the non-woven tote bag has been used repeatedly, both in terms of production process and use Compared with plastic bags, non-woven bags are easier to print patterns, and the expression of ink on non-woven fabrics is more vivid. At the same time, because it can be used repeatedly and the loss rate is lower than that of plastic bags, it can replace plastic bags well regardless of environmental protection or use. Naturally, it can be recognized by most consumers.

Non woven tote grocery bag has environmental protection and public welfare value in addition to shopping and packaging functions. Restriction orders are issued to solve environmental problems. The repeated use of non-woven bags has greatly reduced the pressure of white garbage conversion.

From the perspective of consumption and shopping habits, non-woven environmental protection bag manufacturers are accustomed to using free packaging bags when shopping. I remember a long time ago when we went to the market to buy fish and meat, and that was 2 straws, and it was brought back, or whatever food you went for, it was packed with lotus leaves, and there was a basket of bamboo weaving. Since the rise of plastic bags, the phenomenon of lifting fish with straw and lifting meat with loquat leaves is no longer seen.

Non-Woven Tote Bag

Consumption habits have been developed, or caused by habits, everyone may not be able to bring their own environmentally friendly bags when going to the supermarket. For convenience, the supermarket provides free plastic bags. After charging, it is used free of charge, so consumers are more inclined to buy cheap plastic bags, and it is difficult to accept non-woven environmentally friendly bags that are much more expensive.

A non-woven bag, in addition to being good-looking, also has a better value than a plastic bag. Therefore, as a bag, it must be suitable for the packaging of goods to be considered a qualified bag. However, many businesses use the unique characteristics of non-woven bags, making it a low-input, high-efficiency advertising signboard. In this regard, when consumers carry non-woven bags, they not only meet the needs of consumers in packaging goods, but also promote the brand or product of the company to which the advertisement belongs.

Non-woven two tone shopping tote bags can be said to be a derivative of plastic bags. Because of the pollution of plastic bags, people are more interested in more environmentally friendly materials. It is precisely for these reasons that textile environmental protection bag manufacturers have obtained good development opportunities.

The raw material of the plastic bag is polyethylene, and the non-woven bag is polypropylene. The molecular structure of polyethylene is very stable. Therefore, under natural environment, it will take 300 years for the plastic bag to completely decompose; It is easier to decompose, it takes about 90 days. In today's environment, non-woven bags are even more important.

At the same time, non-woven environmental protection bags have other functions, such as being able to be used repeatedly and being easier to print.

Non-woven environmentally friendly bags can be said to be a derivative of plastic bags, because the pollution of plastic bags has led to more interest in more environmentally friendly materials. Non-woven environmentally friendly bag manufacturers have obtained Good development opportunities.

The raw material of the plastic bag is polyethylene, and the non-woven bag is polypropylene. The molecular structure of polyethylene is very stable. Therefore, under natural environment, it will take 300 years for the plastic bag to completely decompose; It is easier to decompose, it takes about 90 days. In today's environment, non-woven bags are even more important.

At the same time, non-woven environmental protection bags have other more functions, such as being able to be used repeatedly and being easier to print.

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How To Choose a Cosmetic Bag

Streamlining a cosmetic bag is the first step for the little fairies to travel!

Traveling abroad, especially long-distance travel, is definitely an activity that is "painful and happy." Because while exploring the new world, you also have to endure the exhaustion of dragging your luggage back and forth. For the girls who love beauty, if you want to leave a few portrait photos in front of the beautiful scenery, and get a few more beautiful comments from Jingmei, you will inevitably have to worry about grooming. From good-looking clothes and accessories to a full set of makeup tools, I ca n’t wait to pack them.

But in many cases, due to the limitations of travel tools and convenience, we need to streamline our luggage before traveling in order to play smartly.

Heart cleaned up. From good-looking clothes and accessories to a full set of makeup tools, I ca n’t wait to pack them.

But in many cases, due to the limitations of travel tools and convenience, we need to streamline our luggage before traveling in order to play smartly.

The first step in streamlining your cosmetic bag is, first of all, you need to have a fashionable cosmetic bag.

I believe that everyone has a puppet, from the brand, full minus, and so on. But please don't just flip a cosmetic bag out of the bathroom cabinet, as they may not be suitable for travel. A really easy-to-use travel cosmetic bag can not only fit as many items as possible in a limited space, but also be more convenient to use when traveling and do more with less.

First, choose a promotional velvet cosmetic bag with a regular shape and the same width.

Square or rectangular cosmetic bags usually look small, but the actual capacity is much larger than the upper semi-circular cosmetic bag.

Second, choose a stylish cosmetic bag with reasonable separation and moderate hardness.

Although a cosmetic bag with only one zipper saves space, it is not friendly to travellers with a lot of cosmetics, especially when it comes to finding small objects such as lipstick and eyebrow pencils. Proper separation can make your makeup process more organized. On the other hand, the material of the cosmetic bag is also very important. Too soft or hard materials can easily damage your beloved cosmetics during the travel process. Finally, there is a little suggestion. A cosmetic bag with a hook can be hung on any stand when it is in the residence, which is very convenient to use.

After choosing a suitable cosmetic bag, the next step is to fill it with stuff.

Split bottles are very useful for skin care products such as water milk, but they are a bit tasteless for make-up products. Powdery eyeshadows are very troublesome to pack, and creamy products are almost impossible to pack. Therefore, it is recommended that students who travel frequently or travel can buy useful samples at the counter and store them at home for emergency needs.

If the cosmetics you usually use are mostly from one brand, you can also buy travel kits of that brand.

Strictly speaking, skin care products and cosmetics are two kinds of things, but many times, if you choose to travel with makeup daily, you need to prepare some functional skin care products such as makeup removers and the like.

It is recommended that you use a sheet-shaped makeup remover wipes, which can be thrown into the trash after one time use, so your makeup bag will become smaller and smaller, which is very convenient. For eye makeup, you can prepare a small piece of eye and lip makeup remover, or a small bottle of eye and lip makeup remover. If there is extra space in the trunk, remember to put on two or three hydrating sheet masks.

When choosing cosmetics, here are a few tips:

• Square packaging> Round or special-shaped packaging, because regular squares save more space

• Solid> Liquid, because aircraft security and liquid leaks are not considered

Is Disposable Paper Cup Healthy?

Recently, many people have questioned the safe use of disposable water cups. They think that disposable water cups seem clean but they are not. There are many safety hazards in using hot water in the cup. Especially when boiling water, it will dissolve the toxic substances in the cup, which will pose a serious threat to the health of consumers. 

Disposable Paper Cup

It sounds really scary. So, is this really the case?

Does the custom disposable paper cup really contain toxic substances?

First of all, let's start with the material of the paper cup. At present, the disposable paper cup widely used by everyone is a "paper-plastic cup". This paper cup has a layer of ordinary paper on the outside and a layer of coated paper inside. Ethylene.

Ceramic mug supplier believes that as long as it is safe to use the inner polyethylene material that meets the standards to make the disposable water cup's coating film, the inner polyethylene will only decompose when the temperature exceeds 200 ° C. Hazardous substances, and our hot drinks generally do not exceed 100 ° C, which will not cause the decomposition of the internal polyethylene, so the disposable cups made of this standard material will not cause safety problems.

Many people think that in order to make paper cups look beautiful, some manufacturers may use additives such as bleaching agents and even phosphors, which can cause harm to our health and even cause cancer.

In fact, this understanding is not comprehensive. To achieve the carcinogenic effect, two conditions must be met: first, the amount of fluorescent agent used exceeds the standard, and second, the long-term use of this fluorescent agent exceeds the standard. possibility.

At present, the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China has issued relevant regulations, and paper cups that have not obtained the SC safety mark are prohibited from being sold and used. In other words, if the paper cup has the SC mark, it means that all the indicators of the production materials are qualified, and there is no need to worry about the problem of excessive fluorescent agents.

Some consumers think that the ink printed on the outer layer of the paper cup may not meet the standards, and it may contain carcinogens such as benzene or toluene.

Manufacturers and quality inspection departments certainly consider this issue, so when printing, the pattern of the outer layer of the paper cup is at a certain safety distance from the mouth of the cup. According to the national standard (GB / T 27590-2011) requirements for the printing position, regulations The printed pattern on the outside of the paper cup should have a clear outline, uniform color, and no obvious stains, but "the mouth of the cup should be within 15 mm from the cup body and the bottom of the cup should not be printed within 10 mm. Therefore, during normal use, the mouth will not touch the printed pattern, so there is no need to worry about the carcinogens in the ink being taken into the body.

So in general, as long as you buy qualified products from regular manufacturers, they will not cause cancer.

What should I pay attention to when buying disposable paper cups?

First, when buying a paper cup, you can take the cup and illuminate it under a fluorescent lamp. If the cup is blue under the lamp, it proves that a lot of fluorescent agents have been added to it, and consumers should buy it carefully.

Second, check whether there is an SC safety mark. Generally, a product with a SC mark is a safety product.

Third, if you are still not assured, you can also use your own sensory detection to judge the quality of the paper cup.

First of all, look at the color. Do not choose a paper cup that is too white, because there may be excessive addition of chemicals such as fluorescent agents, and also look at the printed pattern on the outer layer of the cup. Far paper cup.

Secondly, smell the odor, if there is a strange smell, it means that this paper cup is likely to use inferior ink or contaminated with germs, do not buy.

Then, pinch the hardness and squeeze the sides of the paper cup lightly. The cup body is too soft and tears and tears are mostly unqualified and inferior products. Choose a paper cup with a certain thickness and a stiff body.

Finally, if you are still worried about the adhesion of harmful substances before using disposable paper cups, you can also rinse them with water before using.

All in all, if you want to buy disposable paper cups, you must buy paper cups with quality assurance. Unqualified paper cups are generally soft and easily deformed when poured into water. Some paper cups have poor sealing properties, and the bottom of the cup is easy to leak water and it is easy to let heat. Water burns your hands.

Our company provides disposable paper cup wholesale. If you have any needs for our products, please feel free to contact us.