Why are daily juice cups made of glass and plastic instead of stainless steel?

As for what kind of water cup to use for drinking juice, I think many people don’t pay attention to it, and think it is a trivial matter, because with the emergence of a large number of freshly squeezed juices and fruit and vegetable drinks, people just You only need to buy a cup to drink, and throw away the disposable cup after drinking. To be precise, the topic we are discussing today is for children and the elderly.

In today’s society, juice is a very favorite drink for children. We find that when the elderly take their children out, they prefer to use stainless steel water cups for their children, because the water cups are strong and durable and have good heat preservation properties. There is no problem if you use a stainless steel thermos cup to hold hot water, but many times the elderly will pour the juice directly into the stainless steel water cup for convenience. Occasionally once or twice will not cause harm to the child, but if you use a stainless steel water cup to hold juice for a long time It will cause harm to the child.

First of all, fruit juice contains plant acid. Whether it is freshly squeezed juice or barreled juice purchased in supermarkets, it contains plant acid. This acidity is not as mild as people think. The inner wall of stainless steel water cups is usually electrolyzed. Use stainless steel water cups for a long time. The juice will corrode the electrolyte layer, and after corrosion, the metal elements will fuse with the juice, causing the heavy metal content in the juice to seriously exceed the standard.

Secondly, plastic cups and glass cups are used for drinking juice. Due to the material, the cups made of these two materials are mostly transparent or translucent. After drinking, the residue of the juice can be clearly seen, which will allow people to clean it in time when they notice it. However, due to the opacity of stainless steel water cups, it may cause people’s negligence, failure to clean them in time, or incomplete cleaning. In daily life, everyone will definitely find the experience of mildew in stainless steel water cups.

In addition, because the stainless steel thermos cup has heat preservation properties, the juice in the water cup is more likely to cause the reproduction of microorganisms in the juice due to its heat preservation performance. So sometimes parents find that their children have diarrhea but cannot find the cause.