Is double-layer water cup better or single-layer water cup better?
As far as heat preservation is concerned, it is of course a double layer, double layer, vacuum in the middle, and no joints in the inner tank. That is to say, two pieces of thin glass are better than one thick glass. Whether double or single, the thicker the better. , The double-layered cup design greatly reduces the thermal conductivity of the cup body. When in use, it can play the role of heat insulation and anti-scalding. It will not be so hot if it is filled with hot water, and it will not be so cold if it is filled with ice water. , The double-layer water cup adopts the principle of double-layer structure to improve the comfort of the cup and the heat preservation effect of the cup. In addition to the humanized design, the double-layer cup also has good aesthetic value. According to the material and thickness of the cup, there is the most suitable distance between them, and the heat preservation effect is the best.
The double-layer cup can withstand high and low temperatures, has a high degree of heat resistance, drop and impact resistance, and can withstand harsh environments. The cup body is designed with double layers and the outer layer is transparent. It has a good heat insulation effect and a layered, transparent feeling
Plastic cups are mostly single-layer plastic cups. Of course, this does not mean that there are fewer double-layer plastic cups, but relatively speaking, single-layer plastic cups are indeed more common than double-layer plastic cups. They are also plastic cups. But it is the difference between single and double layers, so where is the difference between single and double layers? Which one is better, double-layer plastic cup or single-layer plastic cup?
The main difference between a double-layer plastic cup and a single-layer plastic cup is that the double-layer plastic cup has the two major functions of heat preservation and heat insulation that the single-layer plastic cup does not have! In fact, it is not only plastic water cups, but also the difference between single and double layers for all water cups! , Double-layer plastic cups have a certain heat preservation function. Although they cannot be compared with other double-layer materials, they are much better than single-layer plastic cups! The double-layer plastic cup has a good heat insulation function. When the plastic cup is used to hold hot water, the single-layer plastic cup will be hot when holding it, while the double-layer plastic cup will not, although the plastic cup can withstand high temperatures , But it is not recommended to use plastic cups for boiling water!
For plastic water cups, there are many kinds of materials, but plastics that can withstand high temperatures
The cup only has three plastic materials: pp, PC and tritan. Even so, it is still like before.
As mentioned above, it is not recommended to use plastic cups other than tritan to hold hot water, because
The dangers of pp and PC plastic cups for hot water are quite high, especially for infants and young children.
In other words, the harm is higher!