Many customers asked us how to test vacuum how to ensure no vacuum fail bottle shipped . So,let’s have a look at below . As you know ,vacuum flask also called thermos . Because it’s double wall and no air inside the 2 wall . So ,this kind of bottle can keep water hot and cold for long time. But how can vacuum flask manufacturer ensure no vacuum fail ? Okay ,let’s have a class with Eco drinkware who is the profession water bottle ,vacuum flask manufacturer in China , mainalnd. Below is the vacuum tetsing machine for your reference . It works very simple . There are many steel stick on the machine . The steel stick temperature will be very high reach 500 degree C when mchine works . We just need to put the vacuum flask on the machine . Touch the flask 10 seconds later , if the bottle is hot means vacuum failed . The vacuum failed flask will be pick out and never send to customers . The idea is same as put boiling water in the bottle .Just this way is much easy and quick. If you have any question ,welcome to contact below […]
