What is the quality inspection standard of the thermos cup?

Thermal insulation efficiency: thermal insulation efficiency is the core indicator of thermal insulation containers.

Capacity: On the one hand, the capacity of the insulated container is related to the ability to hold enough items, and on the other hand, it is directly related to the holding temperature, that is, the same caliber, the larger the capacity, the higher the holding temperature. Therefore, the positive and negative deviations of the capacity of the insulated container should not be too large.

Hot Water Leakage: This project involves safety of use and affects the aesthetics of the environment in which it is used. When the problem of the project is serious, as long as the thermos flask filled with water is lifted, hot water will leak between the bottle bile and the bottle shell, which will burn the user, and even if the amount is small, it will leak on the table and floor to leave water traces, affecting the appearance of the environment.

Impact resistance: This item is related to the service life of the product. In the process of using the product, it is inevitable that there will be bumps and bumps, if the material used in the product accessories has poor shock absorption or the accuracy of the accessories is not enough, there will be a gap between the bottle and the shell, and the shaking and bump in use may cause the displacement of the asbestos pad and the cracks of the small tail to affect the thermal insulation performance of the product, and in serious cases, it will also cause the bottle to crack or even break.

Identification: The national standard stipulates that the product name, capacity, caliber, name and address of the manufacturer, the standard number adopted, the method of use and the precautions in use shall be clearly marked.

The specific standards are not very clear, and the qualified brands must have been tested by national standards, such as Jiate's, which has international standard production processes and quality requirements. There are also authoritative test reports, you can rest assured.

The thermal insulation effect is qualified for about 4-6 hours. Different thermos cups have different insulation time, good thermos cups can be kept warm for about 12 hours, and poor thermos cups can only be kept warm for 1-2 hours.

In fact, the general thermos cup can be kept warm for about 4-6 hours, and when you buy a thermos cup, there will be an introduction to explain how long the heat preservation lasts.

Maintenance method: Avoid collision and impact during use, so as not to damage the cup or plastic, resulting in insulation failure or water leakage. When tightening the screw plug, the force should be appropriate, and do not rotate too much, so as to avoid the failure of the screw buckle.

When you drink coffee, tea or beverages regularly, it is normal for the inner tank to change color, and it can be removed with a toothpaste and toothbrush.

The appearance is smooth and odorless, and after pouring boiling water, a thermos cup with no heat sensation in your hand can be called a good cup.

The first thing to look at is the appearance of the cup.

Look at whether the surface polishing of the inner and outer tank is uniform, and whether there are bruises and scratches;

Second, see whether the mouth welding is smooth and consistent, which is related to whether the feeling is comfortable when drinking water;

Third, look at the poor quality of plastic parts. It will not only affect the service life, but also affect the sanitation of drinking water;

Fourth, see whether the internal seal is tight. Whether the plug and the cup fit properly. Whether the screw-in and screw-out are free and whether there is water leakage. Fill a glass of water and turn upside down.

Four or five minutes or a few hard shakes can be used to verify that there is no water leaking. Looking at the thermal insulation performance, this is the main technical index of the thermos cup.

Generally, it is impossible to check according to the standard when purchasing, but you can check it by feeling after filling it with hot water, and the lower part of the cup body will heat up after two minutes of hot water in the cup that is not kept warm, and the lower part of the cup that is kept warm is always cool.

Brew tea

Due to the structure of the tea itself, it will be fermented in a closed condition, and the fermented tea will produce some harmful substances to the human body. Tea is rich in protein, fat, sugar, vitamins and minerals and other nutrients, is a natural health drink, which contains tea polyphenols, caffeine, tannins, tea pigments, etc., and has a variety of pharmacological effects.

Tea soaked in high-temperature water for a long time, just like warm decoction, tea polyphenols, tannins and other substances will be leached out in large quantities, making the tea heavy in color and bitter and astringent.

Nutrients such as vitamin C will be destroyed when the water temperature exceeds 80, and long-term high-temperature soaking will cause it to lose too much, thus reducing the health function of tea.

At the same time, due to the high water temperature, the aromatic oil in the tea will quickly volatilize in large quantities, and a large amount of tannic acid and theophylline will exude, which not only reduces the nutritional value of tea, reduces the aroma of tea, but also increases harmful substances. If this tea is consumed for a long time, it will be harmful to health and lead to the occurrence of a variety of diseases of the digestive, cardiovascular, nervous and hematopoietic systems.

When buying a thermos cup, you must go to a regular shopping mall to buy, at least from the source of security, do not make your health harmful for small profits.

The selection of thermos cups mainly depends on the following points:

1. Look at the material: there are many kinds of stainless steel, and there are 201 steel, 202 steel, 304 steel, etc. commonly used to make thermos cups on the market, and 304 steel is food grade. A better thermos cup is generally made of 304 steel inside and outside the cup, which is a better material and does not contain harmful heavy metals.

2. Look at the cup body: observe the inner and outer surface quality of the thermos cup. A good thermos cup generally has a smooth surface of the inner and outer tanks, no scratches, and no bumps; At the same time, it is also necessary to pay attention to whether the mouth of the cup is smooth and whether there is a weld.

3. Look at the thermal insulation performance: pour hot water into the thermos cup, wait for 2-3 minutes and then touch the cup surface, if there is obvious warming phenomenon, it means that the vacuum insulation performance is poor.

Thermal insulation effect test environment: room temperature above 20 degrees, filled with 95 degrees of hot water, in the test in the state of the bottle cap is not opened, after 6 hours, 12 hours after the length of time of the hot water, this is the manual of the CDL thermos cup, and it is also a common standard, generally 6-8 hours, but the straw kettle insulation time will be a little shorter.

Qualified thermos mug with 304 label. The so-called 304 label refers to the thermos cup made of stainless steel, because some plastic thermos cups will melt with water once heated, and will directly emit the smell from the water, and the stainless steel style of the thermos cup is very safe. <

Qualified thermos mug with 304 label. The so-called 304 label refers to the thermos cup made of stainless steel, because some plastic thermos cups will melt with water once heated, and will directly emit the smell from the water, and the stainless steel style of the thermos cup is very safe.

Check GB T29606-2013 yourself, the method is very detailed.

1. Look at the thermal insulation performance. The main function of the thermos cup is to keep warm, we just need to fill the thermos cup with hot water, tighten the lid of the cup, and touch the outer surface of the cup with our hands, especially the bottom of the cup, after leaving it for 2-3 minutes. If the body and bottom of the cup are hot, it means that the inner tank is not vacuum, and the heat preservation performance is not good.

2. Look at the tightness. When picking a cup, fill the cup with water, tighten the lid, and turn it upside down for 10 minutes, or shake it a few times. If there is no oozing water, it means that the cup is well sealed.

3. Look at the material. Whether the cup lid is made of food-grade plastic, and whether the leak-proof rubber ring is food-grade silicone. This material is safe and non-toxic, has no odor, has a smooth surface, and lasts for a long time.

On the contrary, the use of ordinary plastic materials has a strong odor, is easy to age and break, and will also affect the health of water quality. Whether the cup body material is 304 stainless steel. 304 stainless steel has excellent quality, anti-corrosion and anti-rust, bright color and luster, and protects health.

Stainless steel made of other materials has the problem of excessive manganese content, which will lead to unstable steel properties, easy rust and corrosion, and long-term contact with the oral cavity is easy to cause the problem of excessive metal content in the human body.

4. Don't just look at the weight of the cup. There may be many people who have the misconception that the heavier the cup, the better. In fact, this view is not true.

The weight of the cup may be that the manufacturer has added something to it, for example, some thermos cups will hear a "rustling" sound when they shake, and these cups may have added sand. Manufacturers may make up for the missing weight by adding sand, mud, and magnetic sheets to the thermos cup. A truly high-quality thermos cup uses a vacuum to keep warm and insulated, and the weight is not too heavy.

5. Look at the quality of the cup. Look at the appearance of the thermos cup, whether the inner tank and the surface are uniform and smooth. Whether there are joints from the cup body to the bottom of the cup, the body of the thermos cup and the bottom of the cup are integrated, so that the cup has a long service life and the possibility of air leakage is small.

Therefore, the purchase of a thermos cup is to see whether the name, capacity, caliber, name and address of the manufacturer of the product, the standard number used, the method of use and the precautions in use.

The thermos mug is very hot for 24 hours, which proves that the thermal insulation performance is very good.

How to distinguish whether a thermos cup is qualified? You should listen to it with your ears, there is a whirring wind inside, and the thermal insulation effect will be very good.