Is a double-layer plastic cup better or a single-layer plastic cup better?

Single-layer plastic cups are more common than double-layer plastic cups on the market. The same are plastic cups, but the difference between single and double layers, so what 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. The double-layer plastic cup has a certain heat preservation function. Although it cannot be compared with other double-layer material cups, it is 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 to hold, while the double-layer plastic water cup will not.

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