Why should vacuum test be performed repeatedly for insulation cup?（one）

The heat preservation principle of stainless steel heat preservation cup is to evacuate the air between the double layer cup walls to form a vacuum state. Because vacuum can block the transmission of temperature, it has the effect of heat preservation. This time, the editor explained more. Theoretically, the vacuum insulation temperature should have an absolute heat preservation effect, but in fact, due to the structure of the water cup and the production process, it cannot be completely vacuum. Therefore, the heat preservation time of insulation cups is limited, and the heat preservation time of different types of insulation cups is also different.

Then we will return to the title. Why should vacuum test be performed repeatedly for insulation cups before leaving the factory? The purpose of vacuum testing is that we all know that in order to ensure that every water cup is in good condition when it leaves the factory, it is not necessary to send non thermal insulation cups to the market, so why do we do it repeatedly?

Repetition is not to make a cup again and again in the same period of time. It has no meaning. Repeated operation refers to what must be done when a factory process may destroy or damage the vacuum state of the water cup. In theory, this testing standard needs to be strictly implemented by every water cup factory, so as to ensure that all insulation cups on the market have good insulation effect. But in fact, considering the pressure of economic payment and cost, most factories will not perform repeated vacuum testing on water cups.

The editor will tell you in detail which processes will normally be used to conduct vacuum detection on the cup body that has been vacuumized. You are welcome to continue to pay attention and share the next article with you.

Dongguan Zhanyi Commodity Technology Co., Ltd. specializes in the production of metal cups, plastic cups, coffee cups, suction mug, lunch boxes, food jar, travel mugs, portable water bottles, sports bottles, home life desktop trash cans, thermos bottles, etc.These products are all our annual exports, and are recognized and loved by the US, Europe, Australia, Japan, South Korea, Taiwan, Hong Kong and other consumers. Support for small quantity order, fast customization.