Today I suddenly thought about what might happen if the stainless steel water cup liner fails, which may be of some help to you. I can’t remember whether the relevant article has been written before. If I had, the content I wrote today would be a little different.
After many friends purchase a stainless steel water cup, they usually judge whether the water cup is satisfactory to them through three methods. These three methods are:
1. Insulation time, this is mainly for stainless steel thermos cups.
2. Whether there is any peculiar smell, many friends will smell it first after opening it.
3. Whether the water cup is dirty, but most friends will clean it and see if it can be cleaned.
Friends, take a look, have you done the same? First of all, I am sure that there is no problem in doing this, but these three methods are the simplest. It is not enough to judge the quality of the water cup through these three methods. Next, I will share some other methods.
After purchasing the thermos cup, in addition to first checking whether the surface of the water cup is peeled off and whether it is deformed, we also need to check whether the cup lid is functioning normally. In addition to these, it is most important to check the inner tank of the water cup. The dirt depends on whether it is oil or oil. Dust or rust? If there are rust spots, just return it decisively. There’s no need to explain what it means when a stainless steel water cup becomes rusty, right?
Stainless steel water cups, especially thermos cup liner, usually use electrolytic sandblasting process, so a qualified liner should have a smooth inner wall, uniform sandblasting, consistent color, and a bright and not dark luster. Due to different production processes, some liners use the stretching process, and some use the tube laser welding process. Therefore, some water cup liners are complete without welding seams, while others have obvious welding seams. seams, but these do not affect the judgment method.
If there are scratches on the liner of the water cup, even very slight scratches are not qualified for the water cups on the market. Some water cups will have serious irregular scratches on the liner, as if they were scratched by sharp objects. Such liner must be not qualified. I believe some friends will ask at this time whether the failure of such a liner will affect its use? It depends on whether these scratches or ridges are serious. Some of them are not serious and will not affect the use. However, every industry has strict implementation standards for products, and the water cup industry is no exception. This kind of quality is included in the industry standards. Can only be used as defective products.
Not only should the liner be checked for internal problems, but also the contact position between the liner and the outer shell, that is, the position of the cup mouth, should be checked to see if there is paint left on it. Paint left behind is absolutely not allowed, because most of the paint currently used in the water cup industry is not Environmentally friendly paint has a high content of heavy metals. The harm caused to the body by long-term use of such products is detailed in the previous article.
The above are just superficial problems to check. What really needs to be checked is the material of the liner. Many water bottles will be marked with a 304 stainless steel mark or a 316 stainless steel mark on the inside. As mentioned in the previous article, these marks are not formulated by authoritative organizations. No organization is responsible for the material of water cups produced in these factories, so shoddy products are common. In order to reduce costs, many factories use non-food grade 201 stainless steel when they write 304 stainless steel. The water cups that say 316 stainless steel only use 316 stainless steel on the bottom with the 316 symbol. The simple identification method is also in the previous article. It has been shared in. Friends who want to know more can read the previous articles on the website.
Post time: Jan-17-2024