With the gradual maturity of electric heating film in the Chinese market in recent years, more and more users will first consider electric heating film when choosing heating. We also know that no matter what it is, as long as there is a market, there will With more customers, some unqualified products will appear in this market, and it will be difficult for us laymen to recognize the quality of things. So how to better distinguish the quality of the electric heating film? Today, the electric heating film will give readers a detailed introduction on this issue, hoping to help everyone.
We all know that the most basic thing of electric heating film is PET film, and large enterprises will choose to use fixed polyester film manufacturers for production or produce it themselves. In order to save costs, some small companies choose the cheapest PET on the market. In this way, the quality of even the most basic things cannot be guaranteed. How can it be possible to guarantee the quality of the electric heating film?
Of course, there are many ways to identify the electric heating film. For example, we can knead the electric heating film into a ball and heat it for more than five minutes. If the electric heating film cannot withstand it, the quality is unqualified. Connect the electric heating film to the wire, make it waterproof, soak it in water for more than 1 hour, and then heat it with electricity. Some low-quality electric heating film can not work normally; high-pressure test, the electric heating film with good performance can withstand the high voltage of 3750V; Cut the position of the copper sheet, and then pull the electric heating film apart, and then look at the printing part from the reverse side. Some low-quality electric heating films have not been treated with high temperature, and the carbon ink part and the silver mortar are not bonded well, and a transparent gap is formed in the middle. These are the reasons for unsafe incidents.
