What is the healthiest material for the inner container of hot water kettle? A thermos is a household appliance. In order to obtain better insulation effect, besides the size and specification of thermos, it is also very important to pay attention to the inner container of thermos. The following are the healthiest materials for the inner container of a hot water kettle.

What is the healthiest material for the inner container of hot water kettle? 1 1. Glass is healthier than stainless steel thermos. Stainless steel will corrode and there will be heavy metal residues.

2, glass, there will never be impurities dissolved in water. Stainless steel is an alloy product, which contains different trace metal elements according to different uses, such as nickel, chromium, carbon, manganese, silicon, aluminum and so on.

3. But from another point of view, iron in stainless steel cups is beneficial to human body, and iron is a metal element that human body must ingest every day. This is also why the wok for cooking is beneficial to the wok, which is a truth. But the texture and quality of stainless steel cups are uneven, so I can't guarantee the quality of the stainless steel cups you use. Stainless steel cups are alloy products. Improper use will release the heavy metal substances contained in it, which is harmful to health.

In daily use, it is not a big problem to pour ordinary water into stainless steel cups, but don't put acidic drinks, such as juice, coffee and carbonated drinks. Because heavy metals are easy to precipitate, it is not safe to drink ordinary water again.

How to choose a thermos?

1. Pour boiling water into the thermos cup, tighten the cork or lid clockwise for 2-3 minutes, and then touch the outer surface of the cup with your hands. If the temperature of the cup (kettle) is obviously rising, especially if the lower part of the cup is hot, it means that the product has lost its vacuum degree and cannot achieve good insulation effect, but the lower part of the thermos cup is always cold. Myth: Some people use their ears to determine whether there is a hissing sound, but they can't hear whether it is a vacuum.

2. Sealing appraisal method After the cup (pot) is filled with water, tighten the cork or lid clockwise, and put the cup (pot) flat on the desktop, so there should be no water seepage; The screw-in and screw-out of the cup (pot) cover and the cup mouth should be flexible without gap. Fill a glass of water, turn it upside down for four or five minutes, or shake it a few times to verify whether it leaks.

What is the healthiest material for the inner container of hot water kettle? 2 What is the best material for the inner container of the thermos?

1, plastic insulating gasket

Plastic thermos cup liner is a common material. The thermos cup made of this liner material only has the function of heat preservation, and the heat preservation time is only about 3 hours.

2, ceramic insulation liner

Ceramic thermal insulation liner, which is completely harmless, will not contain a lot of harmful substances like plastic, nor will it release a lot of heavy metals like metal cups. The inner container of ceramic thermos cup is a kind of less commonly used material, which is relatively rare in the market.

3, purple sand insulation liner

Kettle with purple sand insulation liner, this material has insulation function, and some better purple sand also has the function of health care and conditioning. The purple sand liner is often matched with the stainless steel shell, which can improve the service life of the purple sand cup.

4, glass insulation liner

The kettle with glass insulation liner is a relatively healthy kettle, but it is not resistant to falling. The substance of glass is relatively stable and will not leak impurities because of boiling water. Glass cups are easier to clean, but not easy to carry around.

What is the healthiest material for the inner container of hot water kettle? 3. What is the inner container of the thermos?

Many families are used to putting a thermos pot at home to drink water. Especially in winter, the thermos pot can provide a long heat preservation time, which is very convenient for families to drink warm water all the time. As we all know, the insulation performance of a thermos pot has a lot to do with its inner container, so what materials are the inner container of the thermos pot?

1, stainless steel liner

Most of the thermos pots with stainless steel insulation liner are made of food-grade 304 stainless steel, which has strong corrosion resistance and low thermal conductivity, and can provide good insulation effect after interlayer vacuum treatment.

2, glass liner

High borosilicate glass or borosilicate glass is mostly used in insulated kettles with glass liners, with good high temperature resistance and safe use. Silver plating on glass liner can also use the principle of specular reflection to reduce heat loss and improve heat insulation effect.

3, ceramic liner

Ceramic insulation liner is safe and harmless, but the cost and insulation effect are not particularly ideal, so there are few insulation pots with ceramic liners in the market.

4, purple sand liner

The inner container made of purple sand has certain functions of heat preservation, health preservation and conditioning, and is usually used with stainless steel shell to improve the heat preservation effect and service life. Another advantage of purple sand thermos is that it is slow in heat transfer and not easy to heat.

5, plastic liner

The plastic liner only has heat preservation function, which has short heat preservation time and poor heat preservation effect, and is generally not used often, so there are fewer plastic heat preservation pots on the market.

The above are five kinds of common liner materials for thermos pots. Usually, stainless steel liner and glass liner are two common liners. So is the glass liner of the thermos good or stainless steel?

2. Is the glass thermos better or the stainless steel thermos better?

Generally, buying a thermos will encounter the problem of buying a glass thermos or a stainless steel thermos. So how to choose these two kinds of thermos? The difference between glass thermos and stainless steel thermos is mainly reflected in the following aspects:

1, insulation effect

According to the requirements of national standards, the daily thermal insulation container for double-layer glass vacuum bottle liner is 1.8~2.0L, with a diameter of 40~44mm, temperature measuring time of 24h, and the thermal insulation efficiency is ≥60 degrees Celsius; The capacity of stainless steel products with inner plugs is ≥ 1.8L, and the caliber is ≥39~