Stainless steel electric kettle surface, why not add a layer of heat insulation plastic? Avoid water when touching the electric kettle. May I ask why?
The person's reflex to scald is very quick, general even if be ironed, hand can also shake off for the first time, won't be able to be scalded.
Because the appearance of more high-grade stainless steel belongs to material (stainless steel easy to leave fingerprints, dirty problem is not apparent in the store inside), outside with plastic, the appearance is similar to white goods, reducing the.
Stainless steel wrapped directly outside the plastic, then the process is more troublesome. And stainless steel and plastic thermal expansion coefficient is different, if killed stainless steel, wrapped tightly plastic, plastic deformation and easy to reduce life. If you wrap a layer of stainless steel outside the plastic, the cost is too high.
Traditional electric kettles are made of metal shell, not plastic, such as the most ancient electric heating tube directly heated aluminum electric kettle. The heat conductivity of stainless steel is only 1/3 of iron. It is one or more of the ten or even twenty times of aluminum. Therefore, if the stainless steel shell can have a certain thickness, the water boils due to poor heat conductivity of stainless steel, not as much as 100 degrees celsius.
