So in the water cups that people use every day, which materials are environmentally friendly? To put it simply, the material does not cause pollution to the environment, that is, “zero pollution, zero formaldehyde” materials.
So which ones in the water cup are zero-pollution and zero-formaldehyde? Is stainless steel an environmentally friendly material? Are various plastic materials considered environmentally friendly materials? Are ceramics and glass considered environmentally friendly materials?
Stainless steel is an environmentally friendly material. Although it is made of metal and is smelted from mineral soil and then processed by alloys, stainless steel can be degraded in nature. Some people say that stainless steel will not rust? The environment in which we use stainless steel water cups is a food environment. In such an environment, it is really difficult to oxidize and rust when using food-grade stainless steel. However, in the natural environment, various factors will cause the stainless steel to oxidize and decompose gradually after many years. The stainless steel will not pollute the environment.
Among various plastic materials, only PLA is known to be used in food grade, which is an environmentally friendly material. PLA is a naturally degradable starch that will not pollute the environment after degradation. Other materials such as PP and AS are not environmentally friendly materials. First of all, these materials are difficult to degrade, and secondly, the substances released during the degradation process will pollute the environment.
Ceramics themselves are environmentally friendly materials and can be degraded. However, ceramic appliances that have undergone various processes, especially those processed with a large amount of heavy metals, are not environmentally friendly materials.
Glass is not an environmentally friendly material. Although glass is harmless to the human body and harmless to the environment after crushing, the properties of glass make the glass almost impossible to degrade.