How to choose a stainless steel insulated bottle？

With the improvement of people’s living standards and the enhancement of health awareness, insulated bottle has become an indispensable item in people’s lives. With a thermos bottle, whether at work, travelling or at home, we can always drink hot water anytime, replenish the body’s necessary fluids. However, if the use of insulated bottle material is not reliable, may have an impact on our health, so the material of insulated bottle has also become a topic of great concern. This article will start from the perspective of healthy drinking, introduce the application and impact of different materials of insulated bottles, to provide readers with a more detailed understanding and reference advice.

Ⅰ.Why can insulated bottles keep liquids warm?

Thermal insulated bottle can maintain the temperature of the liquid, the principle of insulation is mainly based on the basis of heat transfer. Insulated bottles are generally made of double-layer materials, leaving a certain interval between the inner and outer layers. When hot water is placed into the bottle, due to the different temperatures between the outside and the inside of the bottle, a temperature difference will be formed, and according to the principle of thermodynamics, such a difference in temperature will lead to heat conduction or convection. The material inside the bottle determines the speed of heat transfer or convection, which affects the insulation time of the drink.

It can be said that the material is one of the key factors of an insulated bottle. Insulated bottles use special insulating materials to reduce the transfer of energy in the system, thus maintaining the temperature of the liquid inside the bottle. In a nutshell, insulated bottles utilize an air layer or vacuum layer between the materials to prevent external temperature from entering the bottle, and likewise prevent the heat from escaping from the bottle, thus achieving the effect of insulation.

 

Ⅱ.What are the materials available for insulated bottles ?

1. Stainless steel insulated bottle

Stainless steel is one of the most common materials for insulated bottles on the market today. The inner material of stainless steel insulated bottles are usually made of food-grade 304 stainless steel or 316 stainless steel, which can effectively isolate external temperature, maintain the temperature of the water at the same time will not produce odors and harmful substances. Therefore, stainless steel insulated bottle is very suitable for storing room temperature, hot water and tea and other drinks.

Its main features are as follows:

Good insulation: Stainless steel thermos has a better insulation effect, which can keep the water temperature unchanged for a certain period of time, ensuring that you can drink hot water at any time.

Healthy & eco-friendly: Stainless steel inner liner focuses on high-quality food grade stainless steel and high thermal conductivity ceramic middle shell. The granular structure of the filler can isolate the multi-source oxygen heat conductive block. At the same time, the stainless steel will not affect the water quality, which can protect your health.

 

Strong durability: Stainless steel material has a certain degree of hardness and toughness, so it is not easy to bump or deform, and is not prone to scratches and rust, service life is relatively long.

2.Glass insulated bottle

Glass is also a very popular material of insulated bottles.Double-layered tailless vacuum glass insulated bottles are characterized by the bottle body by stacking the inner liner and the shell constitutes a hollow body, the inner liner and the shell in the mouth of the bottle parts of the cement, in the shell at the bottom, set up the exhaust holes, the exhaust holes are located in the parts of the shell bottom groove, embedded in the groove and cemented to the exhaust holes to form a blocking of the glass solder. However, the thermal insulation performance of the glass material is not as good as stainless steel, and at the same time, its fragility also brings some security risks to the user.

3. Ceramic insulated bottle

Ceramic insulated bottle is the combination of traditional ceramics and advanced insulation technology into a new type of insulated bottle. Thermal insulation effect is very good, and the material is environmentally friendly and safe, will not produce harmful substances. At the same time, ceramic insulated bottle is also easy to clean, the use of relatively long period.

However, ceramic insulated bottle also has its shortcomings. It is heavy, not easy to carry, easy to slip and fall, and easy to break, requiring people to be more careful when using it.

4. Plastic insulated bottle

Compared with other thermos cup materials, plastic insulated bottle is more lightweight and less prone to damage. However, double-layered plastic bottle can not be vacuum processed, outside the plastic within the steel, steel within the plastic bottle can not achieve the effect of vacuum. Generally, on the market in the sale of plastic insulated bottles can only be insulated, the lower the room temperature the faster the loss of heat, which is much worse than other thermos cup materials. In addition, plastic insulated bottle in the long term use process may also be released from the plastic in some harmful substances, which may be harmful to our body.

5.Titanium insulated bottle

Titanium is recognized as a non-toxic element in the world. Due to its qualifications such as high and low temperature resistance, acid and alkali resistance, high strength and low density, and its inherent antibacterial and bio compatibility properties, it has become the “honorary metal king” in the tableware industry. Titanium has a lower density, about 50% lighter than stainless steel, while having excellent strength and rigidity. The use of titanium in the production of insulated water bottles can reduce weight, making the bottle more portable and comfortable. Titanium can maintain stability in high-temperature environments, not easy to deform or rupture, the surface is a layer of oxidized film, with excellent corrosion resistance, can resist the erosion of acid, alkali, salt and other chemical media. This makes titanium insulated bottle less prone to rust, do not produce odors, and is easy to clean and maintain.

6. Other insulated bottle materials

In addition to the above several common insulated bottle material,there are also insulated bottle made of materials such as silicone, metal inner liner, etc.

Silicone insulated bottle is relatively new, its soft, high temperature resistant, easy to clean and other characteristics make it popular in the market. In addition, the silicone insulated bottle can also be used as a baby tableware, which will not cause harm to babies, very environmentally friendly.

Metal liner insulated bottles use metal as the inner liner, which can effectively keep warm and insulated, and is a more popular type of insulated bottles. However, metal insulated bottles may also have some impact on water quality, so special attention should be paid to the way of use and cleaning matters.

Ⅲ.What should we pay attention to for healthy drinking water?

Insulated bottle is an essential item in people’s lives, different materials of insulated bottle have their own characteristics and applicable occasions, the material is a major factor to consider when we buy insulated bottle. When selecting the material of insulated bottle, we should fully consider the cost-effective, quality and its personal preferences. In the insulated bottle material selection should also pay attention to the safety of the material, insulation performance and easy to clean and other issues.

When purchasing a insulated bottle, be sure to keep the following in mind:

First,purchase through regular channels, try to select products of well-known brands. Consumers should pay attention to check the instructions, labels and product certificates and other complete.

Second, check whether the goods are labeled with its material type and material composition, for example, when buying stainless steel insulated bottles, unqualified thermos cups are mostly made of 201 stainless steel as the inner liner. 201 stainless steel has high manganese content and poor corrosion resistance, if it is used as the liner of insulated bottles, the prolonged storage of acidic substances may lead to the precipitation of manganese elements. Manganese metal is an essential trace element, but excessive intake of manganese will hurt the body, especially the nervous system.

Here are a few things to keep in mind when using a insulated bottle:

First, moderate preheating. Before pouring hot water into the bottle, we can preheat the bottle to improve the insulation effect, and also kill some bacteria.

Second, avoid using overheated water. In the use of insulated bottle, as far as possible to choose or self-control appropriate drinking temperature, generally not more than 80 ℃, when you need hot water, but also can be reheated when using.

Third, diligent cleaning and removal of stains. Before drinking, you need to wash and wipe the insulated bottle with water in a timely manner, especially the mouth of the bottle, the lid and other places that are easy to hide dirt. Long unused insulated bottle should also be cleaned and thoroughly dried to avoid leaving bacteria and odor.

Fourth, avoid over-relying on insulated bottles. Develop good drinking habits and avoid over-reliance on insulated bottles. Timely replacement of new water. In addition, put fruits, tea, beverages and other substances that will stimulate the odor in the insulated bottle, pay attention to the need for regular replacement of the liner of the insulated bottle. At the same time, when holding coffee, tea, fruit juice, and other acidic and alkaline beverages, a small amount of chromium, nickel, manganese and other heavy metals will be precipitated, which will have a certain impact on the body. It is recommended that any food that is not of a clear nature should not be soaked in a thermos, otherwise safety cannot be guaranteed.

Ⅳ.Summary

The correct choice and use of insulated bottle material can not only facilitate our life, but also enhance our health awareness, thereby better safeguarding our physical health. In view of the advantages and disadvantages of some of the above materials, when we in the choice of insulated bottles, in addition to consider the value of the bottle, in addition to insulation performance, but also need to take into account our actual needs and personal habits. For different time, place, use, need to keep warm time and other aspects of the demand, buy suitable insulated bottle, we can ensure healthy drinking water at the same time can make the use of more convenient. Finally, healthy drinking water habits should be built on everyone’s self-health awareness, to do diligently replenish water, diligent cleaning, in order to better protect our health.