Do Double-Layer Glass Cups Keep Warm?

First of all, the double-layer glass is basically not insulated, which is determined by its craftsmanship. We all know that the reason why the thermos can keep warm is the vacuum layer between the inner tank and the outer shell of the thermos. Since there is no medium for transmission in the vacuum state, the heat cannot be dissipated, and the cold air outside cannot be transmitted. Entering the cup affects the temperature of the water, which is the most basic principle of thermal insulation. As for the double-layer glass, the word "double-layer" can easily mislead consumers, thinking that it should be insulated if there is an inner tank. However, there is no vacuum in the middle of the double layer, and the double layer only plays the role of heat insulation and anti-scalding, and does not have the thermal insulation effect that the thermos cup can achieve.

The double-layer glass has the following characteristics:

1. The transparency of the cup body is comparable to that of crystal: the cup body is made of high-quality high borosilicate, with excellent transparency and wear resistance; easy to clean and not easy to breed bacteria.

2. Heat insulation effect: When the inner liner and the outer layer are sealed, the glass tube will be melted at high temperature. During the molding process, the whole cup body is heated, so that part of the air in the middle interlayer will be released. . But not all are released, so it can only be ordinary thermal insulation, not vacuum thermal insulation.

3. It can adapt to temperature changes: the thickness of the double-layer intermediate glass is small, and it is not easy to burst after boiling water is poured in, while the thickness of the general glass is larger, when the interior is heated and expands, the exterior will burst before it can expand.

4. High temperature resistance: The manufacturing process of the double-layer glass is made by firing at a high temperature of more than 600 degrees, which has strong adaptability to temperature changes and is not easy to burst.