Does the unused thermos have a shelf life?

In the previous article, we talked about the daily life of the vacuum flask and what is the usual service life?There is no mention of the shelf life of an unopened vacuum flask or a vacuum flask that has never been used.There are also many articles on the Internet that briefly talk about the shelf life of vacuum flasks.It seems that it is generally said that it is 5 years. Is there a scientific basis for this?

Before continuing this issue, the editor has some views to express.I have been engaged in the insulation cup and stainless steel water cup industry for more than 5 years. During this period, I have written more than 500 news and copywriting about water cups.Recently, it has been discovered that many copywritings on the Internet promoting water cups obviously plagiarize the content of the articles published by the editor.

After tracking, it is found that some of these are practitioners in the water cup industry, and some are actually some well-known platform personnel.I hereby declare that my article can be borrowed, but please write the source, otherwise, once discovered, this editor reserves the right to all legal proceedings.

About the shelf life of the water cup that has never been used, the editor found that the 5 years that is generally said on the Internet has no scientific basis, and it is probably conjectured by the author's experience.Take the stainless steel vacuum flask as an example. The materials that make up the stainless steel vacuum flask basically include the following: stainless steel, plastic, and silicone.The properties of these materials are different, and the shelf life is also different. The longest shelf life is stainless steel, and the shortest shelf life is silica gel.

According to the storage environment and temperature, the shelf life of the unused stainless steel vacuum flask is also different.Take plastic materials as an example. At present, when producing stainless steel vacuum flasks in the market and various drinking cup factories, plastics are often used on the lids.The most used plastic for cup lids is PP.Although this material is food grade, if the storage environment is relatively humid, the surface of the PP material will form mildew after experiments in such an environment for more than half a year.In an environment with strong light and high temperature, the PP material will start to become brittle and yellow after more than one year.

Even if the storage environment is very good, as the material of the silicone ring for the water cup sealing function, the silica gel will begin to age after storage for about 3 years, and it will become sticky in severe cases.Therefore, the 5 years that is generally said on the Internet is unscientific.The editor gives you a suggestion. If you find a thermos cup that has not been used for many years and has been stored for more than 3 years, it is recommended not to use it.This is not a waste. Perhaps I think I saved tens or even hundreds of yuan, but once the water cup undergoes a qualitative change, the damage to the body is often not solved by tens or even hundreds of yuan.

Dongguan Zhanyi Commodity Technology Co., Ltd. mainly produces various types of drinking utensils such as stainless steel water cups, plastic water cups and kettles.Our company has a complete automatic paint spraying and powder coating production line, which can be processed in customized colors according to customer requirements. As of December 2020, we have provided product innovation services to more than 200 customers around the world. Global buyers are welcome to visit our official website, and we will have professional customer service staff online to provide you with services.